BUTADIENE NITRILE LATEX, LATEX COMPOSITION FOR DIP-MOLDING, AND DIP-MOLDED ARTICLE The present invention relates to a butadiene nitrile latex, preferably carboxylated butadiene nitrile latex, used for manufacturing of the dip-molded of articles, in particular for production of latex gloves for industrial and medical purpose. The present invention also relates to a butadiene nitrile latex composition for dip-molding. Prior art The process of manufacturing articles with the method of dip-molding comprises the dipping a ceramic or other mold having the desired shape of a obtained product into a latex composition. Among methods of dip-molding one can distinguish the manufacturing of articles with the method of ionic deposition, where a mold is previously dipped into a bath comprising coagulant, and then into a latex. Such a method is used, for example, in the manufacture of gloves for medical purpose. The gloves for technical purpose can be textile or unsupported. The textile gloves are dipped directly into a latex without the prior dipping into a coagulant. The nature of a latex has a significant influence on the properties of dip-molded articles. The dip-molded articles can be made from butadiene nitrile latex, but in cases where it is required to ensure better physical and mechanical parameters (strength, elasticity, etc.), the carboxylated butadiene nitrile latexes are used. The gloves for medical purpose are usually made from base of natural or carboxylated butadiene nitrile latex. Nowadays, however, the gloves of natural latex are produced ever less and more rarely: they can cause allergies, and the availability of natural latex depends on the yield of Hevea plantations. The gloves based on the carboxylated butadiene nitrile latex have similar physical and mechanical properties to natural latex, but do not have the disadvantages mentioned above. A number of requirements apply to the latexes used for the manufacture of dip- molded articles. For example, articles should have high aggregative stability, and at the same time ensure the formation of a thin and durable film. For latex articles, it is required to achieve high strength values combined with the requirement for coloration and stickiness. In particular, a glove for medical purpose made of nitrile butadiene latex should be colorless, thin, durable, elastic, provide the tactile sensitivity, have no residual stickiness, and no external defects in the form of runovers, bubbles, or cracks. One of the methods of latex production is the emulsion copolymerization, which is carried out in a complex multicomponent microheterogeneous system, the control and monitoring of which is difficult to implement in practice; therefore, studying the effect of individual reagents, their amounts, and conditions of introduct ion into the reaction on achieving the desired properties of the resulting latex product is of particular importance. In particular, the use of anion active surfactants comprising sodium or potassium cation as emulsifiers when producing butadiene nitrile latex has a great influence on the latex stability during synthesis, and also determines to a significant extent the rate of the emulsion polymerization reaction. It is demonstrated that the amount of potassium, sodium, and phosphorus ions in the latex film provides a balance of the main colloidal-chemical and consumer properties of dip-molded butadiene nitrile latex articles. Thus, patents EP2152759, EP2238175, EP2152758, and EP2238177 disclose methods of producing of butadiene nitrile rubbers and corresponding butadiene nitrile rubbers, which are prepared by copolymerizing conjugated diene, in particular butadiene-1,3, and unsaturated nitrile, in particular acrylic acid nitrile and optionally, additional monomer, in particular, methacrylic acid. Butadiene nitrile rubbers according to the above patents have high curing rate, their vulcanizates are characterized by good physical and mechanical properties. In addition, rubbers are characterized by a special combination of metal ion content, expressed by means o f ionic indices, providing rubbers with a good set of properties. The ionic index, according to these inventions, is defined by the formula where c(Ca2+), c(Na+) and c(K+) are the concentrations of calcium, sodium and potassium ions in the rubber in parts per million. The value of the ion indices defined in the document is 7-26 pm *mol/g, and the ion concentrations are: calcium 325-620 pm, sodium 105-573 pm, and potassium 8-17 pm. In ion index II, according to the formula above and the formulas below, the indicated concentrations of metal ions are divided by the atomic weights of the respective metals. For this reason, the defined ionic index II has the dimensions [pm * mol / g]. Hereafter, pm are parts-per-million, a unit of any relative value equal to 1⋅10 ^-6 of the base value. where the value of ionic indices is 18-29 pm*mol/g, and the concentrations of ions are: magnesium - 50-250 pm, calcium - 163-575 pm. where the value of the ionic indices is 0-60 md *mol/g. From EP2238177 a method of producing butadiene nitrile rubbers and corresponding rubbers is known, which comprises the emulsion copolymerization of α,β-unsaturated nitrile, such as acrylic acid nitrile, conjugated diene, such as butadiene-1,3 and, optionally, additional co-monomer, including methacrylic acid, to produce butadiene-nitrile rubber with magnesium and calcium ions content of 100- 180 and 50-145 pm, respectively, per butadiene-nitrile rubber. The nitrile rubber obtained by this method is capable to produce curable elastomeric compositions having a high curing rate and good curing yield, cause little mold contamination during curing, and can be successfully used in injection molding processes. However, all of the above-mentioned inventions are aimed at improving the processes and products used in injection molding production and do not disclose the effect of metal ion concentration and ionic index values on the properties of butadiene nitrile latexes used for manufacturing of dip-molding articles. In addition, all the above formulas for calculating the ionic indices do not take into account the content of phosphorus ions, which has a positive effect on the homogeneity of the film and causes the absence of defects in latex articles. A latex composition comprising a latex based on acrylic acid nitrile and conjugated diene comprising carboxylic group is known from application US2019177517. Said latex composition is used to make film articles produced by dip- molding. The latex film according to US2019177517 is characterized by high tensile strength and relative elongation at break, and has a soft texture characterized by a stress value at 500% elongation. A latex composition according to the application US2019177517 comprises a compound of trivalent metal in the amount within the range of 0.1 to 1.5 parts by weight per 100 parts by weight of the carboxyl group-containing conjugated diene rubber. However, the said metal compound is introduced into the composition in order to achieve a technical result different from the present invention. Namely, the aforementioned composition comprises a metal compound aiming to exclude sulfur as a curing agent in the process of manufacturing of a dip-molded article and does not disclose the effect of the concentration of metal ions contained in the latexes produced by the monomer copolymerization process on the course of the process and properties of the dip-molded articles. A latex composition comprising a latex based on acrylic acid nitrile and conjugated diene monomer comprising a carboxylic group described in JP2020100076, which is used for making film articles produced by dip-molding. The films produced according to JP2020100076 have high tensile strength and elongation at break, as well as a soft texture characterized by the stress value at 500% elongation. The latex composition is characterized by a calcium content within the range of 500 µg/g or less and a trivalent metal or metal with a higher valence between 500 and 10000 µg/g. Thus, the problem of producing butadiene nitrile carboxylated latexes that meet the necessary requirements in terms of stability and properties, ensuring their effective use for the manufacture of dip-molded articles is still relevant. The aim of the present invention is to provide the production of butadiene nitrile carboxylated latexes used for obtaining dip-molded articles, in particular the latex gloves for industrial and medical purpose. Brief description of the invention In one aspect of the present invention, a latex for manufacture of the dip-molded articles is claimed, comprising the structural units formed from at least one monomer which is conjugated diene, at least one monomer which is acryl ic acid nitrile, and at least one monomer which is an unsaturated carboxylic acid, wherein said latex is characterized by the value of an ionic index (I) within the range of 0.5 to 5.5 wt%*mol/g, defined according to the formula where c(Na+), c(K+) and c(P5+) are the concentration of sodium, potassium and phosphorus ions in the latex, indicated in wt% per weight of the dry latex film, where the concentration of phosphorus ions c(P5+) is not more than 0.20 wt% per weight of the dry latex film. Another aspect of the present invention is a composition for dip-molding comprising the latex according to the invention and at least one curing agent. Another aspect of the present invention is a dip-molded article produced from the latex according to the present invention or the latex composition according to the present invention. Another aspect of the present invention is a glove produced from the latex or composition according to the present invention. Another aspect of the present invention is the use of the latex according to the invention for obtaining the dip-molded articles, in particular gloves. Detailed description of the invention Within the scope of the present invention, a latex for obtaining the dip-molded articles is provided, comprising the structural units formed from at least one monomer which is conjugated diene, at least one monomer which is acrylic acid nitrile, and at least one monomer which is an unsaturated carboxylic acid, characterized by the value of an ionic index (I) within the range from 0.5 to 5.5 wt% *mol/g, defined according to the formula where c(Na+), c(K+) and c(P5+) are the concentration of sodium, potassium and phosphorus ions in the latex, indicated in wt% per weight of dry latex film, where the concentration of phosphorus ions c(P5+) is not more than 0.20 wt% per weight of dry latex film. A dry latex film is produced by drying the latex in a Petri dish in an open air at room temperature for 24 hours, thus it is an essentially dehydrated latex. A method for determining the weight concentrations of sodium, potassium and phosphorus ions in latex is disclosed in the description of the present application. In the ion index according to formula (I) the indicated concentrations of ions of chemical elements are divided by the atomic weights of the corresponding metals. For this reason, the determined ionic index (I) has the dimension [wt% * mol / g]. The produced latex is characterized by good colloid-chemical properties: resistance to mechanical impacts (% of coagulum content), optimal dynamic viscosity (more than 30 cPs), the resulting latex is also ideal for manufacturing the dip-molded: the films made of such a latex have no defects (overlaps, perforations), are characterized by high physical and mechanical parameters, are thin, durable and transparent. The authors of the present invention unexpectedly found out that when the value of the ionic index is below 0.5 wt%*mol/g, latex pH changes during storage, latex resistance to coagulum formation and adding of curing agents decreases, difficulties arise during mechanical impacts on latex (stirring, pumping), impaired film formation is noted, the film is opaque. At value of the ionic index above 5,5 wt.%*mol/g increased foaming in the system is noted, which reduces manufacturability of the latex mixtures (time for foam settling or introduction of defoamers is required). Increased foaming results in the appearance of perforations in the obtained latex products, the film gets different thickness due to the formation of overlaps. Therefore, maintaining the value of the ionic index within the range of 0.5 to 5.5 wt.%*mol/g provides the latex and articles based on it with optimal colloid-chemical and physical-mechanical properties. The latexes according to the present invention can be produced with various methods, in various polymerization modes (continuous, batch, etc.), using various components required for the synthesis process (emulsifiers, initiators, etc.). The content of the individual elements in the latex, namely sodium, potassium and phosphorus, should be such that the ionic index values were within the range of 0.5 to 5.5 wt.%*mol/g, more preferably from 1.0 to 5.0 wt.%*mol/g, still more preferably from 1.0 to 4.5 wt.%*mol/g. Furthermore, the latex according to the present invention is characterized by a phosphorus ion content of c(P5+) of no more than 0.20 wt.% per weight of the dry latex film. Preferably, the content of phosphorus ions in the latex of the present invention ranges from 0.01 to 0.20 wt.%, most preferably from 0.02 to 0.15 wt.%, in the most preferred embodiment from 0.02 to 0.10 wt.%. Exceeding the concentration of phosphorus ions more than 0.20 wt.% results in deteriorat ion of latex properties, namely, increased foaming is noted, coagulum content is also increased, i.e., latex stability is reduced. These aspects negatively affect the properties of the latex films - homogeneity, smoothness, and durability. In general case, the butadiene-nitrile latexes are aqueous dispersions of copolymers of conjugated dienes and monomers comprising nitrile groups, such as acrylic acid nitrile (AAN), produced by the process of the emulsion polymerization. In addition, the butadiene-nitrile latexes comprise other monomers as well. Conjugated dienes from which latexes are prepared, may include 1,3-butadiene, 2-chloro-1,3-butadiene and 2-methyl-1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 1,3- pentadiene, 2-methyl-3-ethyl-1,3-butadiene, 3-methyl-1,3-pentadiene, 2-methyl-3- ethyl-1,3-pentadiene, 1,3-hexadiene, 2-methyl-1,3-hexadiene, 1,3-heptadiene, 3- methyl-1,3-heptadiene, 1,3-octadiene, 3-butyl-1,3-octadiene, 3,4-dimethyl-1,3- hexadiene, 4,5-diethyl-1,3-octadiene, phenyl-1,3-butadiene, 2,3-diethyl-1,3- butadiene, 2,3-di-n-propyl-1,3-butadiene, 2-methyl-3-isopropyl-1,3-butadiene. 1,3-Butadiene, 2-methyl-1,3-butadiene, and 1,3-pentadiene are preferred as conjugated dienes. The most preferred conjugated diene is 1,3-butadiene. The content of conjugated diene in the butadiene nitrile carboxylated latex depends on the further use of the latex and can be at any amount. For production of latex for gloves made by the method of ion deposition, the amount of added conjugated diene monomer is typically from 50 wt% to 85 wt%, preferably from 60 to 75 wt%, most preferably from 63 to 70 wt% per 100 wt% of a monomer mixture. The monomer mixture in the context of the present invention is the total amount of all monomers used to produce latex Acrylic acid nitrile (AAN) is used as a monomer for latex production, but other ethylene unsaturated monomers comprising a nitrile group can also be used, the presence of which provides low solubility of the polymer in non-polar solvents such as liquid hydrocarbons and petroleum oils. It is also known that the nitrile-comprising monomer provides the latex film the required strength properties. Acrylonitrile, methacrylonitrile, α-cyano-ethyl acrylonitrile, and fumaronitrile can be used as ethylene unsaturated monomers comprising the nitrile group. Acrylic acid nitrile is the most preferred variant. The content of acrylic acid nitrile for the purpose of preparation of butadiene nitrile carboxylated latexes depends on the further use of the latex and can be at any amount. In latexes for gloves made by the method of ion deposition, the amount of acrylic acid nitrile is typically from 10 to 45 wt%, preferably from 15 to 40 wt%, more preferably from 25 to 35 wt% per 100 wt% of the monomer mixture. The latexes used to produce film articles with the method of ionic deposition preferably comprise carboxylating agents of the type of unsaturated carboxylic acids, as the presence of carboxyl group in the polymer phase allows for more efficient combined curing of a latex film, since, on the one hand, ionic deposition causes the polymer cross-linking due to the interaction between copolymer carboxyl groups and electrolyte coagulant cation deposited on a mold conforming to an article; on the other hand, the chemical bonds are being formed in the polymer matrix in the presence of curing agents. In ion deposition process carboxylic polymers behave like polymer electrolytes whose reactivity depends on the degree of dissociation of carboxyl groups and increases with increasing of pH value. In addition, the use of carboxylating agents in the monomer mixture results in a decrease of butadiene content in the reaction mixture and a decrease in the hard-to-remove high-boiling by- products in the dispersion phase. The carboxylating agent contained in the monomer mixture is selected from the group of ethylene unsaturated carboxylic acids. In particular, alpha(methylene)carboxylic acids or mixtures thereof, such as acrylic acid, methacrylic acid, itaconic acid, fumaric acid or mixtures thereof, are used as carboxylating agents. Acrylic or methacrylic acids are preferred carboxylating agents. The most preferred is methacrylic acid. The content of a monomer based on unsaturated carboxylic acids in a latex for gloves is from 2 to 10 wt%, preferably from 2 to 7 wt%, most preferably from 3 to 7 wt% per 100 wt% of the monomer mixture. According to the present invention, various functional additives can be introduced into a monomer mixture during the process of a polymerization in emulsion. Said functional additives may be present in the latex composition and be determined by suitable analytical methods. Such additives include, in particular, emulsifiers, initiators, chain-terminating agents, defoamers and other compounds involved in the polymerization process. Surfactants of various nature like anionic, nonionic, cationic and amphoteric ones can be used as emulsifiers in the synthesis of carboxylated latexes for manufacture of articles with the ion deposition method. The anionic emulsifiers contained in the butadiene nit rile carboxylated latex are generally alkyl(aryl)sulfonic acid salts selected from the group of alkylbenzene sulfonates, aliphatic sulfonates, olefin sulfonates, and alkyl sul furic acid salts - alkylsulfates. In addition, various co-emulsifiers, in particular nonionic ethylene oxide compounds with fatty alcohols such as lauryl, myristin, cetyl, stearin and olein alcohols, may additionally be present in the latex. Preferably the latex comprises emulsifiers from the group of alkylbenzene sulfonates and alkyl sulfates of alkali metals. The most preferred anionic emulsifier is sodium alkylbenzene sulfonate, which can be either an individual compound, such as dodecylbenzene sulfonate, or a mixture of compounds. Usually, the emulsifiers of butadiene nitrile carboxylated latex are present in an amount from 1.0 to 10 wt%, the preferred emulsifier dosage range is from 0.8 to 8.0 wt%, the most preferred range is from 1.5 to 6.0 wt% per 100 wt% of the monomers comprising the carboxylated copolymer. In accordance with the present invention, elements of the redox initiating system may be present in a latex composition, whereby transition metal salts such as iron, cobalt or nickel in combination with a suitable complexing agent such as sodium ethylenediaminetetraacetate, sodium nitrile triacetate, trisodium phosphate or potassium diphosphate, may be additionally determined. The latex can also comprise polymerization initiators such as peroxo- and azocompounds. Peroxy compounds include hydrogen peroxide, peroxodisulfates, peroxodiphosphates, hydroperoxides, peracids, peracid esters, peracid anhydrides, and peroxides with two organic residues. Sodium, potassium and ammonium salts can be used as salts of persulfuric acid and perphosphoric acid. Suitable hydroperoxides with two organic residues are, for example, dibenzoylperoxide, 2,4, - dichlorobenzoylperoxide, di-tert-butylperoxide, dicumyl peroxide, tert- butylperbenzoate, tert-butylperacetate, etc. Azo-bis-isobutyronitrile, azo-bis- valeronitrile, and azo-bis-cyclohexannitrile are suitable azo compounds. The amount of an initiator is from 0.01 to 0.5 wt% per 100 wt% of monomers, preferably from 0.02 to 0.1 wt%, most preferably from 0.02 to 0.03 wt%. Compounds such as sulfenates, sulfinates, sulfoxylates, dithionite, sulfite, metabisulfite, disulfite, sugar, urea, thiourea, xanthogenates, thioxanthogenates, hydrazinium salts, amines and amine derivatives such as aniline, dimethylaniline, monoethanolamine, diethanolamine or triethanolamine, can also be present in butadiene nitrile carboxylated latexes. Preferred redox initiating systems are, for example: 1) potassium peroxodisulfate in combination with triethanolamine, 2) ammonium peroxodiphosphate in combination with sodium metabisulfite (Na ₂ S ₂ O ₅ ), 3) p- menthane hydroperoxide/sodium formaldehyde sulfoxylate (rongalite C) in combination with divalent iron sulfate (FeSO ₄ ), sodium ethylenediamine acetate and sodium orthophosphate; 4) cumene hydroperoxide/sodium formaldehyde sul foxylate in combination with divalent iron sulfate (FeSO ₄ ) and complexing agent sodium ethylenediaminoacetate and sodium orthophosphate buffer. The mole amount of the reducing agent is between 50-500% per mole amount of the initiator used and is 0.015-0.02 wt%. The amount of a complexing agent depends on the amount of transition metal used and is usually equimolar to it. The latex is obtained in the presence of a chain-terminating agent typical for the polymerization in emulsion. Therefore, chain-terminating agents can be identified in a latex, in particular, organic thio- compounds which are selected from a series of compounds such as n- hexylmercaptan, n-octylmercaptan, n-dodecylmercaptan, tert-dodecylmercaptan, n- hexadecylmercaptan, n-tetradecylmercaptan, tret-tetradecylmercaptan, as well as xanthogendisulfides, in particular such as dimethylxanthogendisulfide, diethylxanthogendisulfide and diisopropylxanthogendisulfide, thiuram disulfides, in particular tetramethylthiuram disulfide, tetraethylthiuram disulfide, tetrabutylthiuram disulfide; halogenated hydrocarbons such as chloroform, carbon tetrachloride, hydrocarbons such as pentaphenylethane, alphamethylstyrene dimer, acrolein, allyl alcohol, 2-ethylhexyl thioglycolate, terpinolene, α-terpinen, γ-terpinen, and dipentene. Tertiary dodecylmercaptan is the most common and commonly available chain- terminating agent. All of the listed chain-terminating agents may be present individually or in various combinations (two or more) in total amounts up to 1.0 wt%, in particular from 0.1 to 1.0 wt% per 100 wt% of monomers, preferably from 0.15 to 1.0 wt%, most preferably from 0.18 to 0.4. If a content of the chain-terminating agent is less than the indicated range per 100 wt%, the physical and mechanical properties of the dip- molded articles will be significantly lower, and if a dosage of the chain-terminating agent exceeds the indicated range, the stability of the colloidal system during synthesis process will decrease, resulting in coagulum formation. In addition, when producing a latex with the polymerization in emulsion, the buffers are used to ensure pH stability during the synthesis process, which can be detected in the latex. Phosphates and pyrophosphates of alkali metals such as sodium orthophosphate, sodium pyrophosphate, are used as such substances. The amount of a buffer is from 0.01 to 1.0 wt% per total amount of monomers. In addition, a latex may comprise pH-regulating additives, antioxidants , antiseptics preventing the growth of fungi and bacteria in the aquatic environment, etc., introduction of which is possible during latex synthesis and conditioning, as well as foam suppressants, including silicone oligomers emulsions, as well as mineral oils, alcohols, esters, alkylaminosulfonates in amounts from 0.02 vol%. Carboxylated butadiene nitrile latex is characterized by the value of the ionic index within the range from 0.5 to 5.0 wt%*mol/g, and the concentration of phosphorus ions c(P) not more than 0.10 wt% per weight of dry latex fi lm. The films made of latex are characterized with high physical and mechanical parameters: these films are durable, transparent, without defects and having no stickiness. The copolymerization process to produce latex can be carried out in a semi - batch mode, where monomers and other reagents are gradually introduced into a reactor at a certain rate, but the unloading of the obtained latex is carried out in a single step. The latex production can also be carried out in a batch mode, where both the introduction of feed reagents into the reactor and, after copolymerization, the unloading of the obtained latex are performed simultaneously, as well as in a continuous mode: the polymerization process is performed in a cascade of reactors connected in series, the reagent fluxes move at the same rate and the obtained latex comes out of the reactor cascade at the same rate. The reactor for performing the reaction can be a perfect mixing reactor or displacement reactor. The copolymerization process can be carried out using a seed, where various monomers can be used for the synthesis of the seed latex, including the monomers the same as or different from those used in the basic synthesis, as well as inorganic pigments, such as silicone dioxide of any origin. A seed latex can be synthesized in situ directly in the polymerization vessel prior to the basic reaction or pre-synthesized in a separate vessel and then fed into the reaction zone in a required amount. The dosage of the seed latex may be from 0.01 to 15 wt% per total amount of monomers, preferably from 1 to 10 wt%, most preferably from 2 to 5 wt%, and the particle size of the seed latex may be, without limitation, 10 - 90 nm, preferably 20-80 nm, most preferably 30-70 nm. For the synthesis of a seed latex, a monomer of vinyl series either as a single monomer or mixed with other monomers of vinyl series or conjugated dienes can be used as monomers. The monomers of vinyl series for the seed latex are selected from nitriles: acrylonitrile, methacrylonitrile, α-cyano-ethyl-acrylonitrile, and fumaronitrile. In addition to vinylcyanides, aromatic vinyl compounds can be used such as styrene and α-methylstyrene; as well as unsaturated acrylic carboxylates such as methyl acrylate, ethyl acrylate, butyl acrylate, 2-hydroxyethyl acrylate, methyl methacrylate and glycidyl methacrylate; ethylene unsaturated amides such as acrylamide, methacrylamide, N,N-dimethylacrylamide and N-methylolacrylamide; vinyl carboxylates such as vinyl acetate; ethylene unsaturated amines such as methylaminoethyl(met)acrylate, dimethylaminoethyl(met)acrylate, 2-vinylpyridine. 1,3-Butadiene, 2-chloro-1,3-butadiene and 2-methyl-1,3-butadiene, 2,3- dimethyl-1,3-butadiene, 1,3-pentadiene, 2-methyl-3-ethyl-1,3-butadiene, 3-methyl- 1,3-pentadiene, 2-methyl-3-ethyl-1,3-pentadiene, 1,3-hexadiene, 2-methyl-1,3- hexadiene, 1,3-heptadiene, 3-methyl-1,3-heptadiene, 1,3-octadiene, 3-butyl-1,3- octadiene, 3,4-dimethyl-1,3-hexadiene, 4,5-diethyl-1,3-octadiene, phenyl-1,3- butadiene, 2,3-diethyl-1,3-butadiene, 2,3-di-n-propyl-1,3-butadiene, 2-methy-l-3- isopropyl-1,3-butadiene, preferably 1,3-butadiene, 2-chloro-1,3-butadiene and 2- methyl-1,3-butadiene are used as conjugated dienes for production of a seed latex. In addition, the use of the carboxylating agents - ethylene unsaturated acids such as monobasic acids: (meth)acrylic acid and crotonic acid; dibasic acids: maleic acid, fumaric acid, itaconic acid, as well as anhydrides and esters thereof, such as monoesters of dibasic acids (hemi-esters) such as methyl maleate, methylitaconate is acceptable for making a seed latex. The following monomers are preferred for the production of a seed latex: styrene, acrylonitrile, methyl methacrylate, butyl acrylate, 1,3-butadiene, vinyl carboxylic acid or mixtures thereof. Most preferred as seeds are latexes of copolymers of polystyrene, polybutadiene, carboxylated copolymer latexes based on acrylonitrile, styrene or methyl methacrylate, where vinyl carboxylic acid is present in an amount up to 10 wt% of the total monomer weight. It is also known (application US5750618) that inorganic pigments with a particle size of 50 to 100 nm, such as silicon dioxide of any nature, can be used as a seed. The anion-active emulsifiers such as sodium lauryl sulfate, fatty acid sulfoether salts, sodium alkylbenzene sulfonate, as well as non-ionic emulsifiers such as oxyethylated fatty alcohols or oxyethylated alkylphenols can be used in the process of producing a seed latex. Sodium lauryl sulfate and/or sodium alkyl benzene sulfonate are preferred. The amount of an emulsifier used in the synthesis of a seed latex is from 1 wt% to 20 wt% per total amount of monomers, in preferable embodiment from 2 wt% to 10 wt%. The chelating agent sodium ethylenediaminetetraacetate (Trilon B) or inorganic salts such as trisodium phosphate, sodium pyrophosphate, can also be used to obtain the seed latex. Usually the producing of a seed latex is carried out in the presence of an initiator and chain-terminating agent, typical for the polymerizationin emulsion. As a rule, the initiator is chosen from water-soluble persulfates, preferably using ammonium or potassium persulfate. The amount of the initiator being used ranges from 0.1 to 10 wt%, preferably from 0.5 to 2 wt% per total amount of monomers. The most common and widely available chain-terminating agent, mercaptan, can be used in amounts of up to 5 wt%, preferably from 0.2 to 2 wt%. Based on the latex according to the invention, a composition can be prepared for making film articles by dip-molding. In general, the composition comprises a latex and curing agents. Optionally other components can be edded into the composition, depends on the further use of the latex article. In a particular case, a latex composition comprising 96-97% of a latex per dry matter, 3.0-3.6% of curing agents, 0.2-0.3% of fatty alcohol sulfoether salt or other suitable emulsifier and 0.1-0.2% of antioxidant per total weight of dry matter of the composition, taken as 100% of the composition can be prepared to make gloves. Sulfur, zinc oxide, zinc diethyldithiocarbamate, titanium dioxide can be used as curing agents for the composition for film articles. The curing agents are added into the latex composition in the form of dispersions in the emulsifier. The emulsifier is chosen from the group of fatty alcohol sulfoether salts or oxyethylated fatty alcohol sulfoether salts with an oxyethylation degree of 2-10. Preferable variant is oxyethylated salts of fatty alcohol sulfoesters with an oxyethylation degree of 2 -10. According to the present invention the emulsifiers added during production of latexes act as stabilizers of the size of dispersed particles and prevent their agglomeration and sedimentation from dispersions. The dispersant NF - sodium salt of the condensation product of naphthalene sulfonic acid and formaldehyde can be used as a dispersion stabilizer, which provides effective stabilization of particles, but causes coloring of dispersions of curing agents, which gives dark shades to products produced with the ion deposition method. According to the present invention as a dispersing and wetting agent it is proposed to use alkali metal salts of sulfoethers of higher fatty alcohols and oxyethylated salts of sulfoethers, most preferably oxyethylated sulfoethers of higher fatty alcohols with the degree of oxyethylation 2-10, which solutions are colorless and environmentally safe. Usually, 50% dispersions of each of the curing agents are prepared, where the amount of the dispersing agent is 1.0-8.0 wt%, preferably 2.0-6.0 wt%, most preferably 3.0-5.0 wt% per 100 wt% of an ingredient being dispersed, higher emulsifier amounts result in unproductive costs, and lower emulsifier amounts do not provide the desired level of aggregative stability of the dispersion. It is also possible to prepare a complex (total) dispersion of curing agents, which also comprises an antioxidant additive. In addition to accelerators and curing agents, the additives of antiaging agents (antioxidants) based on phenols, sterically hindered phenols, diphenylamine derivatives, organophosphorus compounds, thioesters, etc. can be added into dispersions, main purpose of which is to suppress interaction processes of formed peroxide radicals with unsaturated polymer bonds. The most common antioxidants used to suppress thermo-oxidative distruction are 2,2-methylene-bis(4-methyl-6- butylphenol, 4-methyl-2,6 ditertbutylphenol, 4,6-bis(octylthiomethylphenol)-o-cresol, and others. Generally, the antioxidants are edded into latexes as dispersions in amounts of 0.10-0.50 wt%, preferably 0.20-0.45 wt%, most preferably 0.25-0.45 wt% per latex polymer. The latex composition for film articles is prepared in the following way: dispersions of curing agents in an aqueous emulsifier solution and an antioxidant are added in random sequence into the latex, which was distilled and neutralized to a pH value of 8.0-12.0. The latex composition for making film articles according to the present invention has a dry matter weight fraction of 5 to 45%, preferably from 8 to 35%, most preferably from 10 to 33%. If the latex concentration is less than the specified range, gel deposition efficiency decreases, but if the concentration is more than the specified range, coagulum formation during storage is possible, as well as viscosity build -up of latex, which prevents effective gel deposition on the mold. The pH value of the latex composition is maintained at 8-12, preferably at 8.0- 10.0, most preferably at 8.0-9.5. The required pH level of the composition is achieved by introducing of neutralizing agents having 1-10 wt.% concentration selected from hydroxides of sodium, potassium, ammonia or mixtures thereof. The resulting latex composition is subjected to mature for 24 hours at 20-25°C with periodic careful stirring at interval of 3-5 hours. The dip-molded articles can be made with the well-known method of direct immersion of a mold into the latex composition or with the ion deposition method. Preferably, the ion deposition method is used, where a mold conforming to an article is immersed (dipped) into a coagulating electrolyte solution (a), where the electrolyte being deposited on the mold surface, for that, the mold is dipped into the electrolyte solution for 2-5 seconds, followed by the drying at 25ºC for 3-5 minutes. Then the mold with an electrolyte layer (a) is dipped into a latex composition, where polymer gel being deposited on the mold surface for 5 seconds (b), which ensures optimum thickness of the deposited polymer gel (0.05-0.06 mm) and weight of the obtained product is not more than 3.5 grams. After that, the mold with the polymer gel layer is subjected to the heat-treatment (c). The coagulating solution is an aqueous or alcohol electrolyte solution, it is also possible to use a mixture of aqueous and alcohol solution as a solvent. The electrolyte concentration in the solution is 5 to 50%, preferably 10 to 40%. As coagulants, halides of 2- and 3-valent metals such as barium chloride, calcium chloride, magnesium chloride, zinc chloride, aluminum chloride, as well as barium, calcium, zinc nitrates; barium, calcium, zinc acetates; calcium, magnesium, aluminum sulfates, may be used. Calcium nitrate and calcium chloride and mixtures thereof are preferred. In the process of heat treatment, water evaporates from the latex film, whereby it acquires density, and the strength is achieved due to the interaction of copolymer double bonds of conjugated diene with the curing agents, as well as due to the interaction of carboxyl groups with electrolyte cations deposited at the dipping mold (curing). The simultaneous action of the latter two factors provides the required level of strength characteristics of the obtained article. Analysis methods and embodiments of the invention 1) The elemental analysis was performed by ICP-MS (inductively coupled plasma mass spectrometry) as follows: The latex in amount of 8 g was poured in a thin layer into a Petri dish and left in the open air at room temperature for 24 hours, i.e., until complete evaporation of moisture. A sample charge of 0.1-0.2 mg of dry latex film thus produced was taken, loaded into an autoclave and 8 ml of concentrated nitric acid was added. Then, the lid was closed and loaded into the microwave decomposition system. The decomposition temperature was 120-160 ºC. After decomposition, the cooled sample was quantitatively transferred into a 25 ml flask and brought to the mark with water. The sample was thoroughly mixed and filtered, then filtered through a 0.45 µm syringe membrane filter (nylon). The sample was analyzed by standard ICP-MS using the Agilent 8900 QQQ instrument. For calibration the multi-element calibration standards for ICP, Inorganic Ventures IV-STOCK-27 were used. At least 6 points were plotted. Range was 0 - 1.0 mg/kg. 2) The weight fraction of latex dry matter was determined by drying a sample of a certain weight to a constant weight according to GOST 25709. 3) Determination of the pH-value according to GOST 11604. 4) The surface tension of latex at the interface with air was determined according to GOST 20216-74. 5) Determination of latex resistance to mechanical impacts with the Maron device. For this purpose, 75 ml of a latex with known dry residue was subjected to stirring at a rate of 1,500 rpm in a narrow gap between rotor and stator for 5 minutes. After completion of dynamic exposure, the latex was filtered through a Capron mesh, the coagulum separated from the latex was washed, dried to a constant weight at 105°C. The amount of coagulum expressed as a percentage of the total polymer weight in the sample under analysis was considered as a measure of latex resistance to mechanical impacts. The latex resistance to mechanical impacts was determined as an amount of coagulum formed after processing with the Maron device (Colloid chemistry of synthetic latexes: the Textbook. / R.E. Neuman, O.G. Kiseleva , A.K. Egorov, T.M. Vasilyeva. - Voronezh: VGU Publishing house, 1984. - 196 p.). 6) The appearance of the film was evaluated visually by the presence of defects in the form of cracks, etc. 7) The content of residual acrylic acid nitrile (AAN) is determined chromatographically according to technical specifications (TU) 38.103578-85 p.4.7. 8) The physical and mechanical properties of the cured latex films were determined ASTM D 412. 9) The storage stability was determined by coagulum amount in 1 liter of a l atex after keeping it in a tightly closed container for six months at 25 and 50 ^ C. For that, after expiry of the test period, the latex was filtered through a Capron mesh, the coagulum separated from the latex was washed, and dried to a constant weight at 105°C. The amount of coagulum expressed as a percentage of the total polymer weight in the sample analyzed was considered as a measure of the latex storage stability. 10) The latex viscosity was measured with the Brookfield viscometer according to ISO 2555:1989. 11) The determination of the latex foaming capacity was carried out with a method consisting in manual shaking of a cylinder with a latex and subsequent measurement of foam volume formed in the cylinder. To this end, 10 ml of the latex was placed in a 25 ml measuring cylinder with a diameter of 20 mm, the cylinder was closed and shaken sharply 10 times with constant force, after which the volume of foam formed was determined. 12) The latex resistance to the introduction of curing agent dispersion in the process of latex mixture maturing was determined by the coagulum amount in the composition after its periodic stirring for 24 hours. For that, into 1 liter of a latex preliminary diluted to the dry residue of 28-32%, under stirring, the curing agent dispersion was introduced in the amount of 5 wt% per polymer. The composition maturation was carried out for 24 hours every two hours for 5 minutes at 18 -22°C at a rate of 60 rpm. After completion of maturation period, the composition was filtered through a Capron mesh, separated coagulum was washed, and dried to constant weight at 105°C. The amount of coagulum expressed as a percentage of the total polymer weight in the sample being analyzed was considered as a measure of latex resistance to the introduction of curing agent dispersion. 13) The film stickiness was determined organoleptically by finger contact with the cured film. The result was evaluated from 0 to 5, where 0 is no stickiness, 5 is high stickiness. 14) The latex resistance to introduction of 5% KOH solution was determined as the content of coagulum weight fraction formed at introduction of KOH into the latex, relative to the total amount of latex polymer in the sample. 100 g of synthesized latex is taken, 5% KOH solution is fed into it while stirring at a rate of 5 ml/min. When pH 10.5 is reached, latex is filtered and the resulting coagulum is collected, dried to a constant weight (the time depends on the amount of coagulum formed) in the thermostat at 100ºC. Then the dried coagulum is weighed and its weight fraction in % of the total amount of latex polymer in the sample is calculated. 15) Procedure for obtaining of dip-molding articles: 15.1. A coagulant mixture for the ionic deposition process was prepared by mixing 40 wt% of calcium nitrate and 60 wt% of water. 15.2. The 50% dispersions of curing agents were prepared in a ball mill: the sulfur dispersion was prepared for 72 hours by mixing 100 wt% of sulfur, 100 wt% of water and 5 wt% of sodium salt of sulfoetheralcohol with an oxyethylation degree of 2-10. The dispersions of titanium dioxide, zinc oxide, and zinc diethyldithiocarbamate were prepared similarly with the only difference that the dispersing period was 24 hours. 15.3. The latex mixture was prepared by mixing dispersions of curing agents so that the sulfur content was 0.6 wt% of sulfur, 1.0 wt% of titanium dioxide, 1.5 wt% of zinc oxide and 1.0 wt% of zinc diethyldithiocarbamate per 100 wt% of dry matter, pre-diluted to 35% latex concentration at 18-25°C. The mixture was maintained under constant stirring at 60 rpm for 24 hours. 15.4. A porcelain dipping mold was preheated to 55°C and immersed in a coagulant solution for 3 seconds. Then the mold was held in the air for 5 minutes and dipped into the latex mixture (18.3) for 5 seconds. Then the formed polymer layer was allowed to stand in the air for 5 minutes followed by drying at 80°C for 20 minutes and curing at 110°C for 20 minutes. 16) The quality of latex products (gloves) was tested according to the requirements of ASTM D 6319. The essence of the proposed technical solution is illustrated by the following examples of particular embodiments which illustrate, but without limitations, the scope of the claims of the present invention. It will be obvious to skilled persons that the present invention is not limited to these embodiments and the same effect can be achieved by using the equivalent claims. Examples of embodiments Example 1 In a 20-liter apparatus equipped with an agitator and a thermoregulation jacket, an aqueous phase was fed, comprising 110 wt% of deoxygenated and desalinated water, 2.5 wt% of emulsifier (1) - sodium alkylbenzene sulfonate (ABS) and 0.9 wt% of sodium orthophosphate, 0.007 wt% of Trilon B complexing agent and 0.0018 wt% of iron sulfate. The apparatus was purged with nitrogen followed by the introduction of a total monomer mixture comprising 85 wt% of butadiene, 10 wt% of acrylic acid nitrile, 5 wt% of methacrylic acid (MAA), as well as a tertiary dodecyl mercaptan (TDM) chain-terminating agent pre-dissolved in acrylic acid nitrile in the amount of 0.1 wt% and 0.02 wt% of pinane hydroperoxide initiator (PHI) into it. In addition, an initiator emulsion was prepared separately for feeding during the process, consisting of 0.01 wt% of PHI, 0.5 wt% of sodium alkylbenzene sulfonate emulsifier and 5 wt% of water, and an activator solution comprising 0.018 wt% of rongalite in 5 wt% of water. After stirring for 50 min in the reactor of aqueous phase with the monomer mixture, initiating system and tertiary dodecyl mercaptan at 15°C, rongalite solution was fed into the reactor, which was considered the starting of the polymerization reaction. At 25% and 50% monomer conversion, each ½ of the prepared initiator emulsion volume was fed into the apparatus. The polymerizat ion process occurred at 22°C. 12 hours after the reaction starting, the monomer conversion was 70%, and weight fraction of dry matter in latex was 33%. Then 0.1 wt% of diethyl hydroxylamine stopper per polymer in the form of 5% solution and the neutralizin g agent 10% ammonia solution up to pH=7.5 were fed into the apparatus. Then the unreacted monomers were distilled from the latex using a rotary film evaporator at 60°C and the feeding of a defoamer. After that the latex was conditioned by introducing of 10% ammonia solution until reaching pH=8.4, antioxidant Irganox 1520 L was used in the amount of 0.5 wt.% per latex polymer. The properties of the resulting latex are presented in the tables below. Example 2 The latex synthesis was carried out similarly to the Example 1, except that the content of sodium alkylbenzene sulfonate was 2.8 wt%, ratio of the monomer phase components was 73 wt% of butadiene, 25 wt% of acrylic acid nitrile, 2 wt% of methacrylic acid, 0.3 wt% of TDM and 0.015 wt% of PHI, and 0.4 wt% of sodium pyrophosphate. The feeding of initiator emulsion of 0.01 wt% of an initiator in 0.2 wt% of alkylbenzene sulfonate was carried out at 25% conversion. The polymerization process was carried out at 20°C until the conversion rate of 99.8% was reached within 28 hours. Weight fraction of dry matter in a latex before distillation of residual monomers was 46.8 %. The neutralization of the latex to pH 8.3 was carried out using 10% of ammonium hydroxide. Example 3 The latex synthesis was carried out similarly to Example 1, except that sodium alkyl sulfonate was used as an emulsifier in the amount of 2.2 wt%, the ratio of monomer phase components was 65 wt% of butadiene, 32 wt% of acrylic acid nitrile, 3 wt% of methacrylic acid, and 0.015 wt% of PHI, and 0.2 wt% of sodium pyrophosphate. 0.2 wt% of sodium alkylbenzene sulfonate emulsifier was used to prepare the initiator emulsion. The feeding of an initiator emulsion was carried out at 30% and 60% conversion. The polymerization process was carried out at 24°C until reaching 99% conversion within 30 hours. The weight fraction of dry matter in a latex before distillation of residual monomers was 46.6 %. pH value was 8.3 after neutralization with ammonium hydroxide. Example 4 The latex synthesis was carried out similarly to the Example 1, except that sodium lauryl sulfate was used as an emulsifier in the amount of 2.2 wt%. The ratio of monomer phase components was 67 wt% of butadiene, 30 wt% of acrylic acid nitrile, 3 wt% of methacrylic acid, 0.4 wt% of TDM and 0.015 wt% of PHI, and 0.2 wt% of potassium pyrophosphate. The feed of an initiator emulsion in 0.2 wt% of sodium lauryl sulfate was carried out at conversion rates of 20% and 50%. The polymerization process was carried out at 28 °С until reaching 99 % conversion within 29 hours. The weight fraction of dry matter in a latex before distillation of residual monomers was 46.0%. The latex was neutralized to pH 8.5 with 3% KOH solution. Example 5 The latex synthesis was carried out similarly to the Example 1, except that the content of sodium alkylbenzene sulfonate in the aqueous phase was 2.3 wt%, the ratio of monomer phase components was 60 wt% of butadiene, 35 wt% of acrylic acid nitrile, 5 wt% of methacrylic acid, 0.45 wt% of TDM and 0.015 wt% of PHI, and 0.15 wt% of sodium pyrophosphate. To prepare the initiator emulsion, 0.4 wt% of sodium alkylbenzene sulfonate was used. The feed of the initiator emulsion was carried out at 25% and 60% conversion. The polymerization process was carr ied out at 22°C to the conversion rate of 99.8% for 25 hours. The weight fraction of dry matter in a latex before distillation of residual monomers was 46.5 %, pH value of the latex after neutralization with ammonia was 8.5. Example 6 (comparative) The latex synthesis was carried out similarly to the Example 1, except that alkylbenzene sulfonate (ABS) content in the aqueous phase was 1.5 wt%, the ratio of monomer phase components was 49 wt% of butadiene, 46 wt% of acrylic acid nitrile, 5 wt% of methacrylic acid and 0.18 wt% of TDM, 0.015 wt% of PHI, and 0.4 wt% of sodium sulfate. To prepare the initiator emulsion, 0.2 wt% ABS was used. The feed of the initiator emulsion was carried out at 30% and 55% conversion. The polymerization process was carried out at 29°C up to 60% conversion, weight fraction of dry matter in latex was 27.2%, pH after neutralization with 10% of ammonia hydroxide was 8.0. 0.5 wt% of Irgafos TNPP antioxidant was used as an antioxidant. Example 7 (comparative) The latex synthesis was carried out similarly to the Example 1,except that the ABS content in the aqueous phase was 6.0 wt%, the ratio of monomer phase components was 86 wt% of butadiene, 9 wt% of acrylic acid nitrile, 5 wt% of methacrylic acid and 0.18 wt% of TDM, 0.015 wt% of PHI, 0.9 wt% of potassium pyrophosphate. To prepare the initiator emulsion, 0.2 wt% of sodium alkylbenzene sulfonate was used. The feed of the initiator emulsion was carried out at 30% and 55% conversion. The polymerization process was carried out at 29°C to the conversion of 99.8% for 10 hours. The weight fraction of dry matter in a latex before distillation of residual monomers was 47.6 %, pH value after neutralizing the latex with 3% potassium hydroxide was 8.2. The prescriptions for production and properties of carboxylated butadiene nitrile latexes are presented in the Tables 1 and 4, and weight fractions of elements in latex films and film properties are presented in the Tables 5 and 6, respectively. Preparation of a seed latex 120 wt% of water, 3.5 wt% of sodium lauryl sulfate emulsifier, 0.03 wt% of buffer - Trilon B, 0.5 wt% of a dispersant based on naphthalene sulfonic acid (NSA) was fed into a reactor equipped with an agitator and a thermostatic jacket, then the monomers and chain-terminating agent - 42.5 wt% of styrene, 0.3 wt% of tertiary dodecylmercaptan (TDM), and 2.5 wt% of methacrylic acid were introduced. After purging the reactor with nitrogen, 55.0 wt% of butadiene was loaded. The resulting mixture was heated under stirring to 64 ^ C, after which half of the calculated amount of an initiator - potassium persulfate (0.03 wt%) in the form of 4.5% aqueous solution was fed. The polymerization was carried out until 65% monomer conversion, then the remaining amount of the initiator was introduced. The process was carried out until 100% monomer conversion. The resulting dispersion was cooled to room temperature and used to produce the desired latex. Synthesis prescriptions and properties of the seed latex are presented in Tables 2 and 3 Examples of production a latex on seed (8-10) Example 8 The desired latex was produced in a 2-liter steel autoclave equipped with an agitator and a thermostatic jacket. Into the reactor 5 wt% of a seed latex (Prescription 1), 90 wt% of water, initiator – 0.6 wt% of potassium persulfate, 0.8 wt% of sodium pyrophosphate, complexing agent - 0.05 wt% of disodium salt of ethylenediaminetetraacetic acid, were loaded. A monomer mixture consisting of 30 wt% of acrylic acid nitrile, 4 wt% of methacrylic acid, 0.4 wt% of TDM was prepared in a separate reactor equipped with an agitator and a thermostatic jacket. TDM, to which 52 wt% of butadiene was introduced after purging the reactor with nitrogen. The reactor with monomers was cooled to 5°C after loading of all ingredients. In addition, a mixture of 40 wt% of water and 2.0 wt% of sodium alkylbenzene sulfonate emulsifier was prepared in a separate container. During the first stage of the reaction the autoclave comprising water-soluble ingredients and a seed was heated to 30 ^C, after that the first monomer mixture was continuously fed into it, and an aqueous solution of the emulsifier was fed in parallel for 5 hours. The polymerization temperature was 40°C. 1 hour before the end of feeding of the first part of the monomer mixture, the second part of the monomer mixture comprising 13 wt% of butadiene, 1 wt% of methacrylic acid and 0.4 wt% of TDM was started. The second portion of monomers was fed for 5 hours with the parallel dosing of an emulsifier. The temperature in the polymerizer was maintained at 38-40 ^ C, polymerization was carried out to a dry residue of 45 wt% (99.2% conversion). The reaction time was 20 hours. The resulting latex was neutralized with 3% KOH until pH=8.5. Example 9 The latex synthesis was carried out similarly to the Synthesis 8 on a seed (Prescription 2), except that 0.2 wt% of potassium tetrapyrophosphate was used as a buffer, and the total dosage of tertiary dodecylmercaptan was 0.9 wt%. The monomer conversion was 99.9% reaction time was 21 hours. The residual monomers were distilled using a rotary-film evaporator. The distilled latex was neutralized with a 10% ammonium hydroxide solution to pH 8.2, and the antioxidant Irganox 1520L was added to the obtained latex Example 10 The latex synthesis was carried out similarly to the Example 9 on a seed (Prescription 3), except that 0.1 wt% of pinane hydroperoxide was used as an initiator as well as 0.05 wt% of rongalite in the presence of 0.8 wt% of trisodium phosphate. The rongalite solution was fed together with the emulsifier solution. The monomer conversion was 95.5%, reaction time was 22 hours. The distillation of residual monomers from the latex was not carried out. The weight fraction of volatile monomers in the latex was 0.008%. To decrease the amount of free acrylic acid nitrile, a10% sodium sulfite solution was added to the latex, which resulted in the bonding of acrylic acid nitrile to cyansulfonic ester. After 10 hours of sodium sulfite addition, the fraction of free acrylic acid nitrile was less than 0.007%. Neutralization of the latex to pH=8.5 was carried out with 3% KOH, 0.5 wt% was added as an antioxidant 50% emulsion Irganox 1520L. Example 11 (comparative) The latex synthesis was carried out similarly to the Example 1 , except that monomer mixture comprised 86 wt% of butadiene, 13 wt% of AAN, 1 wt% of methacrylic acid, the synthesis process was carried out to conversion rate of 75%, after distillation, the latex was subjected to cream separation using 1.0% sodium alginate solution as a cream separating agent, after which the upper layer of latex with a dry residue of 49.2% was separated from serum, neutralized with 10% ammonium hydroxide solution and filled with the antioxidant Irganox 1520. The prescription for producing and properties of prepared carboxylated butadiene nitrile latexes are presented in the Tables 1 and 4, and the weight fractions of elements in latex films and film properties are presented in the Tables 5 and 6, respectively. - 25 - с 78 01 381 0 2 - 37522 ³ _. ⁰ _{. - -} 0 0 _. 0 ⁰ _. ⁰ _{. - -} ¹ _{. -} 2 s 0 3 0 ⁰ _. 0 0 0 1 i _s ⁰ e 78 h _t 1 - 5801 5 ¹ _. 0 ⁰ _{. - -} 01 0 _. 0 38 0 _. 1 0 _{. -} ⁹ _{. - - -} 02 n 3 y 0 ⁰ _. 0 1 0 0 0 s x e _{t f t t} n n a e _{f l} ^o e o n n g _t o r _f o _f ^o no o g p _{r r r} n ⁱ _{t r} e _{r r} ^a n ⁱ _{t i} ^e _i ^e _i g e a _r ^e _t ^e _t ^e _t ^e _t n o _{i s} ^e _s ⁱ _t a n oc m e e e a p ⁱ _l o mmm- c o ⁿ n on on ⁿ _{i i t} ^f _i n ^s _l ^f _i u ^s _l ^f _i n u ^s _l ⁱ _t no v p ⁱ _t x _r c ^e _l ^o _t ^o _{t r} a ^o _t ^, _r ^y _l e o u ^a _l ^a p ^a _i v ^a _i ^{f i} _f ^r _t ^, _r ^y _l e o f _f ^r _t ^, _r ^y _l ^y _l e o o f _f ^r _t ^r _t ^s _r m c ep ^u _i o _{r t} p a ^m _r e e m m ^t _i ⁱ _t ^t _i c c c ^s d u e o o o h h o e u ^e _l u ^e _l u ^{e e} _{l i} e p Pp a ^{h i} _t m m m C ^e _t g a m e m r _r ^e m e C C ^h _t o c ⁿ _i c a ⁿ _i B e ^B e B _l e E D m c _s e ^{e p} e _t ^e _t n a ^e _t e ^e a e _r P ^% _{t )} e n z o a f ^f _l ^d _{i t} a h f ^p _{s :} ^{e w} _r u ¹ _{(, t} n _l e ^u _s ^u _s x o _{l r} u oh a ^{x b} _{l l l} ep ^s _r ^e _t a p ^e _t ^e _t e _l ^s _{t f i} y y ^y _r b n ^o mx e ^k _l ^k _l ua ^e _t ^o e rd ^p h p ^o _r a a s y h ^{f p} _l u a en _r e o ^% _t ^e _t n ^a a ^e _i ^e _t a ^{a l} a B ^f _l y ^{e h} _t ⁱ m l ^u _i oh ^p m u _{s i} o ^s T p ^w mo ^l d m A ^u _i n m u m i ^u _i n u ^s n ag ^s _s m u _i pm o ^u _i ^s _s hpm u _{i r} m n d ^a _t N M o ^o _l n a n ^a _t h ^a _t ^{o e} _t o0 o e AA d ^f _l d d ⁱ _r o ⁿ d ^t d _r d a C01 me u D S B A M T o S ^u _s o S o S T ^r _{I i} o P Ro P o S _r o o S o P y po S W

- 26 - x _i 1 _. 9 m A 9 99 ¹ _. 1 _r 0 2 e A mo ^M n d o n a ^m e n n r ² _. 2 0 _i a ^e _i e 8 9 ² _. 2 d b 9 0 ^{m a} _t m e u u ^h b n _{t f} e _{f l} ^{o o} p ^с m ₇ ⁹ _. 8 ² _. 4 0 n 4 gn ^o _i a 9 1 ⁱ x _s ^t _r o E o с ₆ ⁰ _. 0 ² _. ⁷ d ^p 6 0 _. 1 8 _f d 3 ^ot n r o 5 ² _. 4 ^a _t c 1 _. 5 ^s e ^s - 9 2 e e 6 9 02 ^h _t h ^t - 4 ⁰ _{r .} 6 e h ^t 9 _i 9 ¹ _. 9 0 2 ^t _f a w s _{r r} e 0 _. 8 u ^h _t 3 9 0 o e 9 ¹ _. 0 3 ^h g 4 o 8 _. 2 d ^{t e s} _r 2 99 ³ _. 8 0 2 _{f s} u i o _: h ^{h 1 c} 4 ^e _l 1 07 ⁴ _. 2 _{i r} b 0 1 h e w _, ^t _f a T e ^a d e f _t n n f ^o e ^e _i ^e _f h ^t en d _s n ^{a o} n n _t o o ^a _t ^{i i e} h n _t a _l pa e _s ⁱ _t p u a ^c _i e v ^e _l ^y _r ^d oc m _i ^c _r p o ^b d h _i g ⁱ _r ^t _i c c e r ⁱ _l ^c n w up Ppe _{, s} ⁿ a h r a ^h _t ^{a m} _{l t - - -} ^a n c M o ^d _i e ⁱ _l yc s A A D ⁱ _t c m ^y _r e e _, T ^a _i ^a _l c d p n ⁱ _s v c y a o % _{t )} ^{o e} _i e M _{f f r} ^s _r ^h _t n ^{o o e} _r ⁱ _l ^h _t ^h _t ^d - n b ^y _r e e ^t _r w ₍ ^u _t ev y n n ^o _i b c ^m m ^e _{t ,} s _t a ^x _i n ^s o e ^o _i ^t _r a _f ^{a -} _{– –} n _f moc n ^{i i} _t a ^t _r o o - A e ^o _{r r} m z ^{m i} _i ^t o ^p _t N A M M n ^% _t e e ^u _{l r} e n ^p * ^s _i A ^А D op mmo u ^s _s mo ⁱ * * L A M _М T m ^w o o0 n n g ec _t o o ao C01 m M % C ^o _r ^y _l ca po P ^e _r 5 01 Hereinafter the Examples 6, 7, and 11 are comparative. As can be seen from the data presented, the syntheses of Examples 6 and 7 demonstrated an increased formation of coagulum during synthesis, while Synthesis 6 was characterized by very low activity, continuing over 38 hours, with the process spontaneously stopping when 60% monomer conversion was achieved. For synthesis according to Example 7, there was a low reaction rate of 40 hours and high coagulum formation during polymerization Table 2: Prescriptions for synthesis of a seed latex Table 3: Physical and chemical properties of seed latexes

- 28 - * sex e _t a _{l f} 3 ⁶ _. 6 ² _. ⁰ _. 4 83 99 92 0 9 ^{5 2} _{/ -} 0 ₀ 2 0 ¹ _. 0 o 3 1 0 s e _i ^t _r ep ⁸ _. ^{1 4} 46 5 o 2 ³ _{. .} 5 3 0 7 _{/ r} 64 833 9 3 ³ - 11 ⁰ _. 0 ⁰ _. 0 ¹ _. 0 0 p _l a c _i ^{2 2} 54 0 me 1 _. 3 ⁴ _{. .} 02 5 0 1 ⁵ _/ h 3 823 1 3 ⁴ - 51 ¹ _. 0 ³ _. 0 ¹ _. 0 0 c dn ^, _{r r} n a _l ^e _{t l} a _: o / ^f n o o _i ⁱ _t m a e ^c 3 e e c ^{u d} _{l i} ^y _r o ^l d ^m _/ m l _f N ^a _{, i i} ^y n g m e ^s _r u t a m m c ^a _r ^u _l ^r _f % e d u o g o m ^{d i} _s hc ^u _l ^С _{^ ,} ^o _t ug _{f ,} e p l ^s _i % ^r _t ao C e ^o n _, ^e _l o e u c g _, y e ^t _i ^s g a ^o n ⁱ _r eh d _, n f ^s _t ^{i c} : m o n i o ^c _i ^s _i ^m a c c o o n a n o i ^c o ^{i t} _i ^t o ^o n e e h % 4 a e _l n _t c ⁱ _s ^t n _r a ^{v t c} a ^t pa _r u ^% _t c ^{n d} _i ^t no g ^t _, o H b _r a ^r _f e ^{t p d} _l ec % _s ⁱ _s ^{c d ,} _s a ^r _f c ec ⁱ _t ^a g ^t O a ^e _t T e _t ^% e e e ⁱ _f c n _, s m h ^, _r c g _t e g y ^{t h} _t ^{C C} _t ^a na c n m u y ^{t K a} _r ^g _i e ^t _t a a e a ^f _r ^a _r k ^e _s a ^t e o _• a _s ⁱ ca ^{r n t} _{i i s} m ^l _i n _{^ ^} h c b o 50 ^g _i ⁱ _l ^t _s u i d ⁱ o _{r l} u u _i g ^l _i b % u v ^o _r P _s e p ^o _r ao ^a _t ^m 25 e ^y _{r s} e ^r _t c a ^a _t 5 P W m ^Н _р S Am n B m R ^m _i F F S 6 _t a _t a Wc a R ⁿ _{i f} o o c S _f o As can be seen from the data presented, the latexes from Examples 6, 7 and 11 were characterized by low aggregative stability under mechanical impact, they were also characterized by lower resistance to the introduction of curing agents and a solution of 5% potassium hydroxide. High surface tension was observed for latexes according to the Examples 7 and 11. For the latex according to the Example 7, a high foaming capacity combined with a high dynamic viscosity at the lowest particle size was noted. In the comparative Example 11, low aggregative resistance to various types of influences was noted. Determination of Na, K and P element concentrations in latex film The concentrations of sodium, potassium, and phosphorus in wt% were determined by inductively coupled plasma mass spectrometry (ICP-MS) using the Agilent 7500 ICP spectrometer with the Multiwave PRO system, Anton Para. Table 5: Weight fraction of elements in latex film

- 30 - 0 5 + 08 0 _. ² _{. .} 4 4 ⁶ _. 3 ^{, 0} _{. s} n 0 5 3 6 1 0 o ⁱ _t a n 1 _r o ⁱ _t 4 + 08 0 _. ⁸ _. ⁸ _. 0 2 8 o 3 ^f _r 4 4 5 3 5 ¹ _. ⁰ _. e i _s 0 1 0 ^p o ^, _s p k e d 7 c 3 + 08 ² _. ⁷ _. 0 0 2 0 2 ⁵ _. ⁰ _. ^a _r n ⁰ _. 5 3 5 0 c o ⁱ 0 0 _f y ^{o b m} d 9 _r ec 2 + 08 0 ⁹ _. ⁴ _. 0 9 2 6 ^{4 m} _l o u _. 0 4 03 5 _. 1 ⁰ _. 0 ⁱ _f ^f e d _t o n h r ^t p 5 0 ^e _r n a ⁱ s 1 + 08 ⁶ _. ⁸ _. 0 3 8 ⁶ 0 ^p m m ^{0 l} _{. i} 0 4 72 5 _. 1 ² _{. s} 0 n ^l a _i ^{f f r} _t e x 1 e _t 3 ^d _r e 5 h a a ne l 6 ^h _t ^s _s ^s _s 5 ^s _s 0 _, d ^t n f Mdn go _s u o o 0 ^e _l ⁰ _, 0 - ^e _l ² n ^e _l 0 5 _{- -} ^e _r o _l ^{i s} o T s S ^a _t s m o _t o ^m _s o n _t e _t ne o _t c n e o n ^h _t o n c ^{e e} _{f i} A 9 H ^h _t ^h _t n e t u r _, d e ee _f p m n r ^{r o o} e m _, o ⁱ _{t f} ^%, _{s f} - _t ec P e : m cn ^s _{s ,} a s _s %P ^h _t a g g _, ^o n n n c ^{e 6} a ^{a e} _r e e 0 Mn n ^I o ^o _i ^e _{f s l} n a ⁿ _i n 0 _, e ^o _l x g ⁱ _{t s} e ^e _r b _r e ep kc k c 3 _t no ^r _t s ^e % _, e ^/ _l d o a ^r _t ^u _r ^d _» ^p a _t e p ⁱ _{t i} ^{a i} _t e k n mn o ^» T m ^{a s} h ^t a ^e _l v a ⁱ * e h ⁺ _« - _« a _r ^s m mm _s e gn ⁱ _s a ^l _i ^l _i ^l _i ^r _t ^o _l n a ⁱ _t ^e e P ^a _{l r} e b ^c _{i t} n %c ^{p .} _t n _s o o ^. _t P F F F S e T M R a ^o _I w Ch p w 5 From the data presented in Table 6, it is obvious that the films made from the latex according to the invention meet the requirements of ASTM 6319 in organoleptic parameters: smoothness, homogeneity, absence of stickiness, as well as durability. Thus, the latex according to the invention is ideally suitable for making dip-molded articles, in particular, for gloves.