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JP55018201 |
PURPOSE: To remove harmful heavy metal ions dissolved in water effectively by adsorption with an adsorbent consisting of a condensation product of methylolated thiourea with polyethyleneimine. CONSTITUTION: Thiourea or N-substituted comp...
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JP55008821 |
PURPOSE: To obtain the enhanced uptake power by reacting on a carrier a heterogiant cyclic compound having amino groups with an epoxy compound having a given molecular weight and a given number of epoxy groups. CONSTITUTION: A heterogian...
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JP55003840 |
PURPOSE: To obtain heavy metal ions arrestor of high metal ions adsorbability, high insolubility, and good filterability and separability by subjecting a polymer with acid hydrazide units, having the formula as shown separately, to which...
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JP54162799 |
PURPOSE: To prepare the title resin having high abrasion resistance and useful for the adsorption of heavy metal ions, by crosslinking a carboxymethylated polyethylene-imine with a polyepoxide compound in the presence of an organic solve...
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JP54162800 |
PURPOSE: To prepare the title spherical resin having excellent abrasion resistance and useful for the adsorption and removal of heavy metal ions, by crosslinking a carboxymethylated polyethylene-imine with an epihalohydrin in an organic ...
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JP54159386 |
PURPOSE: To produce a polymer adsorbent showing superior exchange adsorbing performance, when used in treatment of dyeing effluent, etc., by partially converting a polysaccharide into aldehyde followed by condensation with an amino cpd. ...
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JP54148892 |
NEW MATERIAL:A nitrosated derivative of hydroxystyrene polymer of formula I or II: [l≥0; n≥3; CM is vinyl comonomer; V is No; W is OMa; X is N-OMa; Y is O; Ma is H or alkali (earth) metal; V and W and X and Y may form chelate bonds v...
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JP54135684 |
PURPOSE: To reduce cheaply and remarkably heavy metal adsorption equilibrium concn. without being affected by coexisting ions, by using a chelate resin made of reaction product of a resin and a cpd. each having a prim. or sec. amino grou...
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JP54135890 |
PURPOSE: To obtain a chelate resin scarcely influenced by coexisting ions, capable of reducing an adsorption equilibrium concentration of heavy metal in an aqueous solution of high salt concentration, by reacting amine resin with a polyf...
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JP54117385 |
PURPOSE: To obtain cellulose ion exchange fiber having the capacity of selectively capturing heavy metal ions even in the presence of alkali (earth) metal ions of high concn. by introducing a functional group contg. iminodiacetic acid or...
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JP54100979 |
PURPOSE: To manufacture and adsorbent with a high selective adsorbability for soluble metal ions by the reaction of EGTA and a specific polyisocyanate in the presence of a soluble metal salt in a polar non-protic solvent of a specific pe...
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JP54097577 |
PURPOSE: To change H-type chelate ion exchange resin directly into Mg-type one and also to enhance its heat resistance without an intermediate treatment for changing it into Na-type by treating H-type chelate ion exchange resin with func...
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JP54097578 |
PURPOSE: To change H-type chelate ion exchange resin directly into Ca-type one and also to enhance its heat resistance without an intermediate treatment to change it into Na-type by treating a chelate ion exchange resin whose functional ...
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JP54096484 |
PURPOSE: To produce the title adsorbent of superior hydrophilic property contg. sulfur by mixing a reaction product of cyanuric chloride, thiocarbohydrazide and polyether with polyisocyanate in a polar solvent of above a specified dielec...
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JP54081183 |
PURPOSE: To provide an adsorvent showing a high hydrophilicity and an excellent heavy metal ion adsorption property through reaction of cyanuric chloride, thiocarbohydrazide, an aminosulfonic acid and a polyisocyanate in a polar nonproto...
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JP54081184 |
PURPOSE: To provide a highly selective adsorbent useful for desalting of sea water, separation of organometal through cross-linking of polyethylene imine denaturalized by carboxymethyl in a water solution by epibromohydrin in the presenc...
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JP54043292 |
PURPOSE: To obtain a chelate resin having improved alkali and chemical resistance at high temperatures and trapping ability of heavy metal ions in a high pH range, by adsorbing metal ions capable of forming complexes on phenol chelate re...
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JP54023093 |
PURPOSE: To obtain an oxide adhered activated carbon, by mixing solid oxine with activated carbon, which converts various kinds of reaionuclides containined in cooling water of a reactor or water leaked from it into stable hydrophobic ox...
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JP54023092 |
PURPOSE: To provide an ion exchanger for an ion eldctrode consisting of a metal complex having glyoxide as the ligand or its derivative, by which ion concn. of Ni, Co, Bi, etc. can be measured which could no be measured by any convention...
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JP53143690 |
PURPOSE: To prepare a new chelate resin which has excellent heavy metal adsorptivity, adsorption rate, mecahnical strength , etc. and is easily regenerable by reacting an amino group-containing polymer with carbon disulfide.
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JP53123381 |
PURPOSE: To recover heavy metals easily and efficeintly without lowering the performance of ion exchage resin by treatment of heavy metalsadsorbed by the ion exchange resin having cordination radicals with a reducing agent to form metals...
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JP53117082 |
PURPOSE: To stabilize functional groups, remove impurities and to deodorize chalate resins, by making the chelate resins adsorb heavrymetal ions with ion exchange, and by dipping the resins in hot water to remove impurities remaining in ...
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JP53113889 |
PURPOSE: To prepare a chelate resin having three-dimensional structure and capable of selectively adsorbing heavy metal ions such as mercury ion, by condensing and crosslinking phenols, aldehydes, iminodiacetic acid and thiourea.
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JP53113890 |
PURPOSE: To prepare a chelate resin having increased adsorptivity of heavy metals and excellent adsorption rate, comprising phenols, aldehydes and iminodiacetic acid.
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JP53113891 |
PURPOSE: To prepare a chelate resin having an excellent adsorption capacity for heavy metals, by adding specific amount of a water-soluble saccharide and/or an organic salt to the reaction solution of the phenols having phenol nucleus to...
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JP53113888 |
PURPOSE: To prepare a chelate resin useful for desalination and having an excellent exchange adsorptivity of alkaline earth metal ions, and a three dimensional structure, by condensing and crosslinking phenols, aldehydes, iminodiacetic a...
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JP53106789 |
PURPOSE: To prepare a phenol-type chelate resin capable of adsorbing ferric ion selectively, particularly at low PH range, by introducing a phenol compound having an iminodiacetic acid group to the side chain of a phenol-aldehyde resin b...
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JP53076187 |
PURPOSE: To obtain the title resin having chemical resistance and excellent selectivity by reacting a polymeric acid with metal ions in a solvent and adding polyamine to the reaction product after which the resulting polycarboxylic acid-...
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JP53066993 |
PURPOSE: A polyvinyl (dialkylthiocarbamoylthio) acetate resin having recurring units of formula I (R1 and R2 are each H or alkyl).
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JP53047389 |
PURPOSE: To capture heavy metals with good efficiency by using a polymer adsorbent obtd. by dissolving vinylpyridine monomers in a specified org. solvent to remove insol. components and radical copolymerizing the monomers with other copo...
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JP53047498 |
PURPOSE: To prepare a heavy metal ion trapping agent capable of trapping heavy metal ions in high efficiency from a highly acidic aqueous solution, by treating a product obtained by polycondensation of a mixture of a polyamine and thioam...
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JP53044421 |
PURPOSE: To recover copper in plating effluent water contg. copper pyrophosphate as high grade inorg. chemicals in a simple procedure by treating the effluent water with an ion exchange resin at a specified pH value and then treating the...
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JP53037191 |
PURPOSE: To provide a high performance, inexpensive chelating agent for heavy metals by treating a reaction product of an aminated resin obtd. by amination of a resin contg. halogen atoms and CS2 with an acid.
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JP53033988 |
PURPOSE: To provide the title capturing agent with high adsorbing power and excellent chemical resistance which is hardly affected by coexisting ions by reacting a resin contg. halogen atoms with a specified amino cpd. and further reacti...
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JP53031792 |
PURPOSE: To prepare an ion absorbent with high selectivity and adsorbitivity to uranium dissolved in water by halogenation of the carboxyl groups of a benzoic acid derivative-formaldehyde polycondensate followed by reacting with a sort o...
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JP53030688 |
PURPOSE: Polymers or copolymers consisting of monomer units of the formula I: (R is alkylene group).
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JP53028692 |
PURPOSE: Preparation of a heavy metal ion adsorbent with high selectivity and adsorbability to uranium by polycondensation of a catechol derivative and formaldehyde.
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JP53028690 |
PURPOSE: Preparation of aheavy metal adsorbent with high selectivity and adsorbability to uranium by reacting a chloromethylated or chlorosulfonated polystyrene type copolymer with a catechol derivative.
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JP53027692 |
PURPOSE: The polycondensation between a specific benzoic amide derivative and formaldehyde is conducted under heating in the presence of a polar catalyst to provide an adsobent having high selectivity and adsorptivity for heavy metals es...
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JP53027690 |
PURPOSE: A specific benzoic amide derivativative in the presence of an acidic catalyst to provide an adsorbent having excellent selectivity and adsorptivity for heavy metals, especially uranium dissolved in water.
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JP53026889 |
PURPOSE: To prepare an adsorbent for heavy metals having excellent selectivity and adsorptivity to uranium, by the coupling reaction of diazotized aminostyrene copolymer with benzohydroxamic acid derivatives.
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JP53026888 |
PURPOSE: To prepare an adsorbent for heavy metals having excellent selectivity and adsorptivity to uranium, by the reaction of chloromethylated or chlorosulfonated styrene copolymer with a specific compound.
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JP53026887 |
PURPOSE: To prepare an adsorbent having excellent selectivity and adsorptivity to heavy metals especially to uranium, by the coupling reaction of diazotized polyaminostyrene copolymer with 4- hydroxybenzoimidazole etc..
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JP53023889 |
PURPOSE: To produce an adsorbent having selective adsorbing power to heavy metal ions by diazotizing a polyaminostyrene copolymer and coupling the diazotized copolymer with specified (2-oxygenzyl)-aminoacetic acid-N-acetohydroxamic acid ...
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JP53023890 |
PURPOSE: To produce an adsorbent having selective adsorbing power to heavy metal ions by diazotizing a polyaminostyrene copolymer and coupling the diazotized copolymer with specified benzoic acid amide derivatives.
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JP53023891 |
PURPOSE: To produce an adsorbent having selectivity and high adsorbing power to heavy metals dissolved in water, esp. U by diazotizing a polyaminostyrene copolymer and coupling the diazotized copolymer with specified catechol derivatives.
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JP53020661 |
PURPOSE: To remove heavy metal at a low cost from intended solution through treatment using a polyalkylene polyamin type chelate resin in the presence of alkalimetal salt or alkaliearth metal salt.
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JP53014186 |
PURPOSE: To obtain a compsn. with high adsorbing power to heavy metals, esp. Hg by mixing low molecular cpds. having thiocarbamoyl sulfide bond with amorphous silica and powder activated carbon.
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JP53012788 |
PURPOSE: To obtain a practical heavy metal adsorbing resin of uniform granular size which is stable over a wide pH range, esp. to strong acid by mixing a reaction product of polyisocyanates and specified S-contg. cpds. with a medium and ...
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JP53006284 |
PURPOSE: To insolubilize heteromacrocyclic cpds. contg. NH2 group while holding the reactivity with metal ions by coating a soln. of the cpds. and cpds. contg. a functional group which reacts with NH2 group on the surface of solid matter...
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