Field of the invention

The invention concerns the area of hygiene and sanitation, namely compositions for processing of woven materials and the products obtained from them.

Prior art

Woven fibrous textile materials are traditionally processed with various methods such as dispersion, impregnation, calendering, metallization etc., with various compositions for improvement of their operational characteristics, i.e. antiseptic, water- repellent, dirt-repellent, tactile etc. properties.

However antiseptic compositions containing:

catamine AB, potassium iodide or sodium n-sulphonamidobenzolaminomethylsulphate, or yodinol (Russian patent No2178029); catamine AB, bigluconate chlorhexidine, 5- nitrofurilacrolein (Russian patent No 2159825), are already used for imparting antiseptic properties to the textile materials used for manufacturing, for example, medical clothes of single use and dressing medical materials.

However antiseptic preparations described in these patents are effective only for processing textile materials intended for manufacturing of products of single or short-term application as they are not resistant to water processing by washing-up liquids, and decay at long storage of finished products.

A composition for antiseptic processing, for example of hygienic napkins, containing sorbic and citric acids, sodium chloride, odorant and water is known (US Patent N. 5049440).

The given composition possesses a limited spectrum of antimicrobic action (in relation to gram-positive and gram-negative bacteria) and is not effective in respect to various pathogenic funguses and protozoa.

A composition for antiseptic processing, which is effective in relation to gram- positive and gram-negative bacteria (E.coli, Bacillus subtilis, Micrococcus luteus, Staphylococcus aureus); funguses (Aspergillus niger, Candida albicans) and protozoa (Euglena viridis, Amoeba proteus) (see Russian patent No 2088218) is known. This composition contains sorbic acid, citric acid, sodium chloride, water, odorant and, in addition, hyaluronic acid and apple pectin. Technological applications of the given composition are limited because it is applied to processing hygienic napkins of single use, manufactured from nonwoven materials.

Possibility of application of the given composition for antiseptic processing of products from woven long-term used materials, for example the products of underclothes, is inexpedient because the included components (for example sorbic and citric acid) may cause allergic reactions of the skin. Included in this composition the hyaluronic acid and natural high-molecular weight compound (apple pectin) demand specific conditions of storage of products, i.e. special packing for preservation from moisture.

The presence of a number of components in the given composition complicates the process of its manufacturing.

As a whole, the above described compositions for antiseptic processing have limited technological applications and do not provide effective antiseptic processing of woven materials and products from them, especially on the basis of natural strings and fibres.

The technical specification according to the Russian patent No 2330673 is known; it is chosen as the closest prior art to the present declared invention.

A composition for antiseptic processing of woven materials and products of them, containing 0,5-2% alcoholic solution of a block-copolymer of polydimethylsiloxane and polyurethane is disclosed in said Russian patent. It has a viscosity from 10000 up to 45000 Pa s at 110°C and has biocide activity on the basis of a nanostructured powder of bentonite intercalated by ions of Ag ⁺ or/and Cu ²⁺ injected in the alcoholic solution.

According to said specification a nanostructured powder of bentonite intercalated by ions of Ag ⁺ or and Cu ²⁺ is obtained by processing a powder of bentonite with water solutions of silver nitrate or copper sulfate. The powder of bentonite is preliminarly enriched with cations of Na ⁺ through processing with water solution of an inorganic salt of sodium, with subsequent cleaning from anions.

A composition on the basis of a block-copolymer of polydimethylsiloxane and polyurethane concerns thermoplastic silicones. It possesses high adhesion to various materials and is used for processing woven materials, for imparting basically water- repellent and dirt-repellant properties to them. However, processing of products from woven materials processed with the given composition is accompanied by destruction of the polymeric film formed on the fibres. Destruction of the polymeric film is the consequence of various physical-mechanical processes (attrition, lengthening of fibres, thermal processing of fibres at ironing of the products, etc.) and chemical processes (processing by water, alkali, acids, etc.). It also take place at water processing (washing) of woven materials and of products from them. Prolonged action of the composition and antimicrobic properties of the exploited products worsen as a result of the destruction of the polymeric film.

Detailed description of the invention

The problem of the invention consisted in the creation of a composition for antiseptic processing of woven materials, selection of components and their ratio in the composition for providing efficiency to its prolonged antiseptic action at operation of products from woven materials.

The composition for antiseptic processing of woven materials containing 0,5-2,0 % of alcoholic solution (preferably isopropyl alcohol solution) of a block-copolymer on the basis of polydimethylsiloxane and polyurethane, with viscosity from 10000 up to 45000 Pa s at 110°C and on the basis of a biocide injected into the mentioned solution, is submitted as a solution of the declared technical problem. Biocide is created on the basis of a nano structured powder of bentonite intercalated by ions of Ag ⁺ or/and Cu ²⁺ .

According to the present invention the composition in addition contains a nanostructured powder of bentonite intercalated by ions of cerium (Ce ³⁺ ) at the ratio of the named powder of bentonite to a powder of bentonite intercalated by ions of Ag ⁺ or/and Cu ²⁺ as (0,001÷0,01): 1 (parts by weight). Thus 0,5-1,5 weight % of a mix of bentonite powders, at a ratio of the named mix of powders to a block-copolymer as (0,5-1) : 1 (parts by weight) was used on a dry woven material.

According to the invention nanostructured powders of bentonite and an alcoholic solution of block-copolymers were used at the ratio: 1-(100÷120) (parts by weight).

According to the invention the size of particles of nanostructured powders of bentonite was from 20 up to 150 nm.

According to the invention the size of particles of nanostructured powders of bentonite intercalated by ions of cerium (Ce ³⁺ ) was from 20 up to 50 nm and the size of particles of nano structured powders of bentonite intercalated by ions of Ag ⁺ or/and Cu ²⁺ was from 20 up to 150 nm.

According to the invention a mix of nanostructured powders of bentonite intercalated by ions of Ag ⁺ and Cu ²⁺ has the ratio as: 1 : (0,2-0,8) (parts by weight).

According to the invention nanostructured powders of bentonite intercalated by ions of Ag ⁺ , Cu ²⁺ contain 2-6 weight % of the named metals.

According to the invention a powder of bentonite intercalated by ions of Ce ³⁺ is obtained by modifying a semifinished product of bentonite in Na-form (enriched with ions of Na ⁺ ) by means of a water solution of an inorganic salt of cerium, preferably, Ce(N0 ₃ ) ₃ ^• 6H ₂ 0 at the ratios: semifinished product : salt of cerium as 1 : (0,1-0,2) (parts by weight) and deionized water : salt of cerium as (10-20) : 1 (parts by weight), with subsequent removal of sodium salts, dispersion and drying of the obtained product.

According to the invention a nanostructured powder of bentonite intercalated by ions of Ce ³⁺ contains 1,5-2,0 % b.w. of the named metal.

At realization of the declared invention, a composition is provided for antiseptic processing of woven materials, on the basis of natural components. It corresponds to the requirements of ecological compatibility and safety. Application of the composition provides effective products for antiseptic processing both for household and medical purposes.

The technical results obtained according to the invention are explained by the following points:

- application of a natural mineral, i.e. bentonite in Na-form, having high activity to reactions for ionic replacement of cations of one metal with cations of other metals, for manufacturing of a biocide;

- application of nanostructured powders of bentonite (bentonite nanoparticles) intercalated by ions of the mentioned metals in the structure of biocide bentonite nanoparticles provides a big area of contact to the bacterial environment and increases efficiency of antimicrobic and antifungal activity on pathogenic microflora;

- application of mixes of bentonite powders intercalated by ions of mentioned metals possessing synergism and having no negative action (allergic, edematous) on tissues of an alive organism; - presence in the composition of the specified block-copolymer providing formation of an elastic protective film on the surface of fabric fibres;

- formation of a film on fibres of woven materials. The film contains particles of nanostructured powders of bentonite providing prolonging antiseptic properties (antimicrobic, antifungal) to woven materials and to products obtained from them and also inhibition of destruction of the used copolymer film when applying the named products;

- the technological application of compositions on the basis of components which are biologically compatible with tissues of live organisms.

At the analysis of the available prior art it was not revealed patents with a set of characteristics corresponding to the present patent application and realizing the above described result of prolonging the action of antiseptic compositions for processing woven materials, used for manufacturing products of household and medical use.

The resulted analysis of available prior art testifies the conformity of the present patent application to the criteria of "novelty", "degree of inventiveness" and "industrial applicability" as confirmed by the following description.

Realization of the invention

For realization of the invention the hereinafter described medical and labware, commodity products and materials are used:

bentonite (montmorillonite) in Na-form;

silver nitrate (AgN0 ₃ ); copper sulphate (CuS0 ₄ ); sodium chloride (NaCl); cerium nitrate (Ce(N0 ₃ ) ₃ -6H ₂ 0);

polar solvents - deionized water; alcohol, preferably isopropyl alcohol;

antiseptic compound possessing antimicrobic and antifungal properties (see Russian patent No 2330673).

The used composition has been obtained as follows:

1 step. Preparation of semi-finished products of bentonite powders preliminarly enriched with cations of sodium Na ⁺ .

Bentonite (montmorillonite) in Na-form was kept in 5% water solution of NaCl carrying out enrichment of bentonite with ions of sodium. Then repeated washing for removal of chlorine anions and subsequent filtration and drying was carried out.

2 step. Obtaining of nanostructured powders of bentonite intercalated by ions of metals: Ag ⁺ , Cu ²⁺ . At the given step nanostructured bentonite powders (nanoparticles of bentonite) intercalated by ions of the specified metals and without salts of sodium are obtained from semifinished products of bentonite obtained at the 1 ^st step.

The treatment was carried out according to the following examples.

Example 1.

A semifinished product was cleaned from anions, dried up and modified by 10- 20% water solution of silver nitrate (at red illumination). 15% water solution of silver nitrate (AgN0 ₃ ) was preferably used. The obtained modified semifinished product was repeatedly washed out for removal of salts of sodium, filtered and dried.

The amount of water solutions used for processing 5 g of semifinished products (1 ^st step) was the following: bentonite : water solution as 1 : 20 (parts by weight). After drying the product was grinded.

As a result a bentonite powder intercalated by ions of Ag ⁺ and not containing salts of sodium was obtained.

Example 2.

The same materials and technological methods as in the Example 1 are used, but 15 % water solution of copper sulfate (CuS0 ₄ ) is used to modify bentonite enriched with ions of sodium Na ⁺ .

A bentonite powder intercalated by ions of Cu ²⁺ and not containing salts of sodium is obtained.

Deionized water is used for realization of technological steps 1 and 2 mentioned above.

Dispersion of the products obtained according to the Examples 1 - 2 up to the sizes of particles specified according to the invention was carried out, preferably as follows: the products of Examples 1-2 were dispersed in deionized water at the ratio (parts by weight): product (Examples 1-2) : solvent, as 1: 10.

Then their dispersion was carried out up to the size of particles of no more than 150 nm with the help of an ultrasonic dispersant, accelerating process of dispersion of bentonite powders.

The process was carried out with use of the dispersant Bandelin Sonoplus HD2070, at the Power 40 Wt, within 5 min. Obtained colloidal systems were poured on a sublayer and measurements of the sizes of particles of the bentonite powder were carried out by methods of microscopy, after drying. Researches have shown that the powders of bentonite have the following sizes of particles: 20% of the total amount of powder have the size of 20-30 nm and the rest have the size of 100-150 nm.

Bentonite powders obtained in Examples 1-2 were tested for definition of mass % of the contents of silver and copper, by means of titrimetric analysis.

The titrimetric analysis to define the amount of metals in bentonite powders was carried out with use of indicators fixing a point of equivalence of titration.

It was established, as a result of the carried out test, that bentonite powders intercalated by ions of the named metals can contain from 2,0 up to 6,0 mass % of silver or copper depending on amount of modifying reagents used.

Two-steps process for obtaining a biocide on the basis of nano structured powders of bentonite intercalated by ions of silver and copper is optimal, depending on the content of intercalating metals in powders of bentonite.

The specified mass % contents of silver or copper in bentonite powders is optimum.

Costs for manufacturing are increased at increase in amount of silver or copper in an intercalated powder of bentonite, and antibacterial activity of the composition obtained according to the invention is reduced at decrease of mass % of content of metals.

For realization of the invention a nanostructured powder of bentonite intercalated by ions of Ce ³⁺ was obtained according to the following example:

Example 3

The semifinished product of a bentonite powder made at the 1 ^st step, was preliminarly enriched with cations of sodium Na ⁺ . Then it was cleaned from anions, dried up and modified (intercalated) by ions of cerium.

Inorganic salt of cerium, preferably, cerium nitrate Ce(N0 ₃ )3-6H ₂ 0 was used to modify the specified semifinished product. Cerium (metal of variable valency) was chosen as metal actively reacting with oxygen, with formation of cerium dioxide (Ce02) when using the specified salt. Cerium dioxide is an antioxidant with peculiar inactivating and blocking influence on formation of peroxide and hydroperoxide radicals, formed at thermal-oxidative processes in polymers. Cerium nitrate Ce(N0 ₃ ) ₃ ·6Η ₂ 0 was dissolved in deionized water for realization of the present example. The solution was added to the semifinished product of bentonite activated (enriched) with ions of sodium at the following ratio:

bentonite semifinished product : Ce(N0 ₃ ) ₃ ·6Η ₂ 0, as 1 : 0,1 (parts by weight); deionized water : Ce(N0 ₃ ) ₃ ·6Η ₂ 0 as 15 : 1 (parts by weight).

The volume of the obtained suspension was increased to 7-10 times with use of deionized water. The suspension was mixed and kept over 24 hours; then the intercalated mineral was filtered through paper filters, dried (up to full drying) and grinded. Dispersion of the products obtained by the Example 3 was carried out with use of a ultrasonic dispersant. The process was carried out with use of the dispersant Bandelin Sonoplus HD2070, at the Power 40 Wt, within 15-20 min.

As a result of the two-steps process the finished product, i.e. a powder of bentonite intercalated by ions of cerium (Ce ³⁺ ) was obtained. The size of particles of the bentonite powder was determined as a result of tests with an electronic microscope. It was from 20 up to 50 nm.

The contents of cerium were determined by the method of the plasma analysis (ICP). It was roughly 1,5 %.

At realization of the Example 3 it was established that the ratios specified in the invention for the quantitative charge of components, for obtaining a bentonite powder intercalated by ions of cerium, are the optimum. Decrease of the specified ratios will lead to decrease in the contents of cerium in the obtained powder and increase in these ratios increases costs for the manufacture of the given composition.

The sizes of particles of a powder of bentonite intercalated by ions of cerium specified in the invention are the optimum on conditions of inhibitory influence of this metal on destruction of the block-copolymer used in the composition. Good adhesive properties of the block-copolymer provide formation of a protective film with nanoparticles of specified biocide on fibres of woven materials.

Decrease in the sizes of particles of a powder of bentonite intercalated by ions of cerium will lead to significant complication of technological process and to increase of costs for dispersion of the product obtained by the Example 3.

Efficiency of inhibiting influence of cerium on processes of peroxide oxidations occurring in the used copolymer forming a polymeric film on fibres of a material is decreased if a powder of bentonite intercalated by ions of cerium with a size of the particles of more than 50 nm is used.

It is preferable to use a biocide on the basis of a mix of powders of bentonite intercalated by ions of silver and copper, at their specified ratio, to decrease the costs for the manufacture of the compositions according to the invention. Use of a mix of the named powders is preferable for woven materials with antiseptic effect (antimicrobic and antifungal action), intended for manufacture of products of household purpose (linen, various coverings including for technical purpose).

It is preferable to use a powder of bentonite intercalated by ions Ag ⁺ for products of medical purpose (a bandage, a lining, etc) as most effective on antimicrobic protection in respect to a wide spectrum of microorganisms.

A preparation from a class of thermoplastic silicones is also used to manufacture compositions for antiseptic processing of woven materials and products from them, in particular:

preparation Penta-1009. It is a block-copolymer of polydimethylsiloxane and polyurethane, i.e. thermoplastic silicon combining organic and inorganic components, i.e. rigid and elastic blocks in the same structure.

Modifications of the preparation Penta-1009 have viscosity from 10000 up to 45000 Pa s at 110°C. The preparation Penta-1009 is a transparent material with a high degree of light transmission (without yellowness); it does not contain fillers, softeners and other additives. The preparation possesses high adhesion to various materials and high mechanical durability. It does not contain volatile substances and is stable and steady at storage. Penta-1009 is combined with organic polymers due to block structure and it is used to modify textile materials forming a water-resistant porous layer on the textile fibres.

It is preferable to use a preparation Penta-1009 G with viscosity from 10000 up to 20000 Pa-s at 110°C.

The specified functionalities of the named preparation have defined its choice in the compositions for antiseptic processing of woven materials, realizing the technical result specified in the invention.

The percentage b.w. declared in the invention for the content of the named block- copolymer, is the optimum. Interaction of particles of bentonite powders with fibres of woven material worsens at decrease in its amount in the composition while increase in its amount leads to increase in costs for manufacture of the compositions and to deterioration of characteristics of woven materials, including density, tactile properties, etc.

The compositions declared in the invention for antiseptic processing of woven materials, on the basis of use of the above specified components and weight ratios, provide effective prolonged antimicrobic and antifungal action on various bacteriological impurities and microorganisms which are present both on tissues of live organisms (on the body of a human being) and in the environment.

The obtained composition is not toxic, does not cause allergy, and has no contraindications.

Realization of the invention by changing the components used in the structure and the specified weight ratio of them, will lead to worsening of physical, mechanical and chemical properties of the fibres of woven materials, processed with the given compositions, or to increase in costs for obtaining the compositions.

The composition for antiseptic processing of woven materials and products from them is illustrated by the following examples:

Example 4

To prepare the composition of the present example the following ingredients were used:

0,5 % alcoholic solution of the mentioned block-copolymer (Penta-1009 G);

a nanostructured powder of bentonite intercalated by ions of Ag ⁺ (Example 1) in the amount of 1 part by weight of a powder per 100 parts by weight of the named alcoholic solution;

a nanostructured powder of bentonite intercalated by ions of Ce ³⁺ in the amount of 0,01 parts by weight per 1 part by weight of the bentonite powder intercalated by ions of Ag ⁺ ;

Grams 0,9 of a mix of the named nanostructured powders of bentonite, injected into 0,5 % alcoholic solution of Penta-1009 G is used for processing samples of a woven material (coarse calico) each of 180 g.

Processing is carried out by impregnation of fabrics with the named solution.

As a result of processing of the specified material with the composition of the Example 1, the weight of the woven material is increased of 0,7 , after drying. Samples of a fabric with the area of 100 cm (S=10 x 10 cm) before processing and after processing were used for measurement.

The weight of the samples before processing was 2,0 g and after processing was

2,01 g.

Example 5

The composition of the present example was obtained using the following ingredients:

1,0 % alcoholic solution of the mentioned block-copolymer (Penta-1009 G);

a nanostructured powder of bentonite intercalated by ions of Ag ⁺ (Example 1) in amount of 1 part by weight of powder per 100 parts by weight of the named alcoholic solution;

a nanostructured powder of bentonite intercalated by ions of Ce ³⁺ in the amount 0,01 parts by weight per 1 part by weight of the bentonite powder intercalated by ions of Ag ⁺ ;

10 g of a mix of the named nanostructured powders of bentonite injected into 1,0 % alcoholic solution of Penta-1009 G is used for processing samples of a woven material (coarse calico) each of 180 g.

As a result of processing the specified material with the composition of the Example 2, the weight of the woven material is increased of 1,5 , after drying.

The weight of the samples (S=10 x 10 cm) before processing was 2,0 g and after processing was 2,02 g.

Example 6

The composition of the present example was obtained using the following ingredients:

1,0 % alcoholic solution of the mentioned block-copolymer (Penta-1009 G);

a mix of nanostructured powders of bentonite intercalated by ions of Ag ⁺ and Cu ²⁺

(Example 1 and Example 2) at the ratio in the mix as 1,0 : 0,5 (parts by weight). 1 part by weight of the mixes of powders per 100 parts by weight of the mentioned alcoholic solution was used;

a nanostructured powder of bentonite intercalated by ions of Ce ³⁺ at amount of 0,01 parts by weight per 1 part by weight of the bentonite powder intercalated by ions of Ag ⁺ ; 10 g of a mix of the named nanostructured powders of bentonite injected into 1,0 % alcoholic solution of Penta-1009 G is used for processing samples of a woven material each of 180 g. As a result of processing of the specified material with the composition of the Example 2, the weight of the woven material is increased of 1,5 %, after drying.

The weight of the samples before processing was of 2,0 g and after processing was of 2,02 g.

The change of weight of woven materials after their processing with the composition according to Examples 4-6 did not cause changes in the linear sizes of samples, art-colour properties of woven materials and their resistance to stretch. Which testifies the preservation of the basic characteristics of a material, after its processing.

Example 7 - control.

The composition of the present example was obtained using the following ingredients:

1,0 % alcoholic solution of the mentioned block-copolymer (Penta-1009 G);

a nano structured powder of bentonite intercalated by ions of Ag ⁺ (Example 1) in the amount of 1 part by weight per 100 parts by weight of the mentioned alcoholic solution;

10 g of a nanostructured powder of bentonite injected into 1,0 % alcoholic solution of Penta-1009 G is used on processing of samples of a woven material (coarse calico) with the common weight 180 g.

As a result of processing of the specified material with the composition of the Example 2, the weight of the woven material is increased of 1,5 , after drying.

The weight of the samples before processing was 2,0 g, and after processing was 2,02 g.

The samples of woven materials were tested for antimicrobic and antifungal properties after processing with the compositions of Examples 4-7.

Testing for antimicrobic and antifungal properties was carried out in two stages:

- after processing of the samples of woven materials with the compositions of Examples 4-7;

- after water processing (five washings) of samples of the fabric in an alkaline solution of a washing-up liquid.

Estimation of antimicrobic properties was carried out by a standard technique with use of culture of Staphylococcus aureus. The culture has been grown up on a nutrient medium of beef-extract agar (BEA) at temperature of 37°C. Then a homogeneous suspension of cells in deionized water was prepared at the ratio of 2 billion cells in 1 ml of suspension. The prepared suspension, in amount of 1 ml, was deposited in Petri dishes with the dried nutrient medium of BEA and was distributed on the surface at regular intervals by means of a sterile spatula so that the culture could germinate as a continuous lawn. Then slices of researched samples in the size of 1 xl cm processed with various antiseptic compositions according to Examples 4-6, were densely placed on the surface of the agar. The slices of the tested samples were placed at a distance of 2 cm from each other and at a distance of about 2,5 cm from the center of the cups. The cups with the samples under crop were rendered to oven control at 37 °C.

Antimicrobic properties of each sample were estimated basing on formation of zones of inhibition of growth of strains of microorganisms, which were precisely defined on the background of the continuous lawn of growth of the tested culture.

Average results of the tests on samples of fabrics, processed according to the Examples 4-7 were the following:

- zones of inhibition for all tested samples of a fabric, at the first step of testing of the compositions (after processing of the woven materials) of Examples 4-7, were 9 - 10 mm;

- after water processing (washing) of the samples of a fabric in an alkaline solution of a washing-up liquid the inhibition zones were as follows:

- for samples of a fabric processed with the composition of the Example 4: 5 mm;

- for samples of a fabric processed with the composition of the Example 5: 7 mm;

- for samples of a fabric processed with the composition of the Example 6: 6 mm;

- for samples of a fabric processed with the composition of the Example 7: 1 mm;

Estimation of antifungal properties of the tested compositions (Examples 4-7) was carried out by the same technique with application of a dense nutrient medium (Czapek Dox Agar, manufacturer Himedia, India). The nutrient medium was preliminarly inoculated with tests-microorganisms, i.e. cultures of funguses of Aspergillus sydowii and Aspergillus niger. Test-cultures of funguses were used for preparation of a suspension of spores of funguses. They were cultivated on the medium of Capek at 28°C. Age of cultures of funguses was from 14 till 28 days, beginning from the moment of recultivation.

A suspension of spores in concentration of 1 million/ml was prepared separately for each kind of test-cultures of funguses. A suspension of each kind of funguses of the specified concentration was deposited on the surface of the nutrient medium (a lawn of the culture). Then samples of textile, processed with the tested compositions according to Examples 4-7, were placed on the surface of the obtained fungus culture.

Tests were carried out within 5-7 days at a temperature of 28°C. Washing of the tested samples and their drying with subsequent deposition on the surface of the nutrient medium, with control of the specified technological parameters, was carried out after the expiration of the specified term. Then measurement of zones of inhibition of growth of tests- microorganisms (in mm) was carried out around of the above mentioned samples.

The tests have shown the presence of zones of inhibition of growth of test- microorganisms on the average 7 mm, when using the composition according to Examples 4 and 6 for processing of woven materials.

The zone of inhibition of growth of test-cultures at use of the composition according to the Example 5 was 8 mm. That testifies the synergism of powders of bentonite intercalated by ions of silver and copper when used in mixed compositions.

The zone of inhibition of growth of test-cultures around the samples processed with the composition according to the Example 7, was on the average 1 mm.

Testing of the compositions according to Examples 4-6 of the invention has shown that antiseptic (antimicrobic, antifungal) properties of the given compositions are more effective in respect to similar properties of the control composition of Example 7, which does not contain a powder of bentonite intercalated by ions of cerium.

Thus, the carried out researches testify, as a whole, the high efficiency of the composition for antiseptic processing of woven materials object of the invention and its prolonged action in relation to various colonies of microorganisms.

It is expedient to use the composition according to the invention for processing various woven materials intended for the manufacture of products both for medical and household purposes, including for manufacture of linen, socks, insoles for footwear, towels, clothes for the medical personnel, protective clothes for work in the centers with high infectious danger and protective fabric coverings for various products.