A method of obtaining a complexing ion exchanger
(57) Abstract:Usage: synthesis of complexing ion exchanger with high sorption indicators for scandium. The inventive phosphorylation with phosphorus pentachloride klimatisierung and laminirovannogo diethanolamine or dimethylethanolamine copolymer of styrene with divinylbenzene. The invention relates to a method for complexing resins and can be used in hydrometallurgy of non-ferrous and rare metals.A method of obtaining complexing ion exchangers sottoportego groups on a polystyrene basis.Closest to the claimed is a method of producing the resin, which consists in the aminating monoethanolamine klimatisierung copolymer of styrene with divinylbenzene, followed by phosphorylation with an aqueous solution of phosphoric acid.The aim of the invention is the synthesis of complexing ion exchanger with high sorption indices in relation to the scandium from solutions of low concentration.This goal is achieved by the fact that aminirovanie diethanolamine or dimethylethanolamine klimatisierung coolimba, in the reaction mass, which is a pulp petaluridae phosphorus in an inert solvent, serves aminirovanie diethanolamine or dimethylethanolamine klimatisierung copolymer of styrene with divinylbenzene. The phosphorylation is carried out at a temperature of 20-25aboutC for 24 h, and then the phosphorylated product is treated with concentrated hydrochloric acid and washed with water.P R I m e R 1. To 100 g klimatisierung macroporous copolymer of styrene and divinylbenzene was added 400 ml of diethanolamine and stirred for 10 h at 100aboutWith, aminirovanie product is expressed from the mother liquor, washed with 5% hydrochloric acid solution, water, dried.In a three-neck flask equipped with a fridge, mixer, to the reaction mass, which is a slurry of 200 g petaluridae phosphorus in an inert solvent, add 100 g laminirovannogo product, stirred for 24 h without heating. Press liquor, phosphorylated product is treated with concentrated hydrochloric acid and washed with water. The resulting sorbent contains 6,72% R.P R I m m e R 2. To 100 g klimatisierung macroporous copolymer of styrene and divinylbenzene was added 400 ml DIMET what olaney acid, water, dried.Phosphorylation carried out as in example 1. The resulting sorbent contains 6,18% R.P R I m e R 3. Sorption of scandium was performed from model solutions containing scandium from 2.8 to 0.33 mg/l at pH of 1.4. The ratio of the mass of the resin (g) to the volume of the solution is 1: 5. The contact time 24 hData on sorption of scandium in the table. (56) USSR Author's certificate N 339555, CL 08 J 5/20, 1979.USSR author's certificate N 322333, CL 08 J 5/20, 1979. A method of OBTAINING a COMPLEXING ion exchanger by aminating ethanolamine klimatisierung copolymer of styrene with divinylbenzene, followed by phosphorylation, characterized in that as ethanolamine ispolzuut diethanolamine or dimethylethanolamine and phosphorylation carried out with phosphorus pentachloride.
-CH-CH2--CHwhere K = 34,1 to 58.6, L = 30,7 - 45,5, m = 2,1 - 5,1, n = 1,9 - 4,6 mol
-CH-CH2--CHwhere K = 34,1 to 58.6, L = 30,7 - 45,5, m = 2,1 - 5,1, n = 1,9 - 4,6 mol
SUBSTANCE: invention discloses polymer particles with size between 60 nm and 1000 nm and containing a polymer which contains a hydrophobic backbone chain formed by at least one segment which absorbs near-infrared radiation, bonded with chloroform which absorbs near-infrared radiation, having an absorption peak between 700 and 1100 nm; and at least one segment which is transparent for near-infrared radiation. The invention also discloses a method of producing said particles, a coating composition containing said polymer particles and a reactive iodonium oligomer, as well as a negative lithographic offset printing plate which contains a substrate, a hydrophilic bottom layer and a laser-developed top layer, where the laser-developed top layer contains said polymer particles.
EFFECT: disclosed particles enable to obtain coatings which ensure sufficient runability and machine developability of negative lithographic offset printing plates.
32 cl, 35 dwg, 4 tbl, 23 ex
SUBSTANCE: invention describes a copolymer containing monomer units A having a cyano-containing side group, monomer units B having an alkyl and an aryl film-forming side group, monomer units C having a side chain containing poly(ethylene glycol), poly(propylene glycol) and/or statistical poly(ethylene glycol-propylene glycol) and optionally monomer units D having at least one functional group capable of undergoing a crosslinking reaction via cationic polymerisation.
EFFECT: copolymer is further used to produce polymer particles for use in radiation-sensitive coating compositions for negative radiation-sensitive lithographic printing plates.
11 cl, 6 dwg, 2 tbl, 26 ex
FIELD: chemical technology, resins.
SUBSTANCE: invention relates to a method for preparing polyhalide strong-basic anion-exchange resins of gel and macroporous structure designated for disinfection of water in closed ecological objects, domestic drinking water and water from non-checked sources. Polyhalide anion-exchange resins is prepared from strong-basic quaternary ammonium anion-exchange resins in chloride form by their iodination with J2 solution in KJ at stirring, thermostatic control and washing out. Iodination is carried out with triiodide solution on conditioned strong-basic anion-exchange resins in chloride form in the content of strong-basic groups 80%, not less, in the mole ratio anion-exchange resin : triiodide = 1.0:(1.1-1.5). Ready product is kept at 20-55°C additionally. Invention provides preparing polyhalide anion-exchange resins characterizing by high resource in water disinfection and in simultaneous reducing iodine release in disinfecting water in retention of high disinfecting indices.
EFFECT: improved preparing method.
1 tbl, 8 ex
SUBSTANCE: method for preparation of low-basic anionites by suspension copolymerisation of acrylonitrile, methylmethacrylate in amount of З-5 wt.%, content of technical grade divinylbenzene being 9-15 wt.% and concentration thereof being 50-60%, in the presence of benzoperoxide in amount of 3.0 wt.% and blowing agent (alkylbenzine, aviation kerosene, decane) in amount of 40 vol.% as regards to monomer volume in suspension media, which consists of water, 25% of sodium chloride or ammonium chloride and 1.5-2.0% of potato starch, when heated at 50°С for 1 hour, at 61-65°С for 4 hours, at 70°С for 2 hours, at 80°С for 1 hour, followed by amination with diethylenetriamine at 130-145°С for 10 hours in the presence of 1.0-1.5% of element sulphur used as a catalyst.
EFFECT: provides for high osmotic stability and high resistance to organic poisoning.
1 cl, 9 ex
SUBSTANCE: invention pertains to the field of obtaining subacid carboxylic cation exchange resins with a macro-porous structure. The engineering problem is the obtaining of a subacid carboxylic cation exchange resin with high values of capacity and strength characteristics: full exchange capacity of not less than 2.5 mg Eq/cm3, dynamic exchange capacity of not less than 1600 g Eq/m, and osmotic stability of not less than 98%. High capacity and strength characteristics can be achieved due to the structure of the polymer matrix and conditions for obtaining it. A method is proposed for obtaining the subacid carboxylic cation exchange resin though radical suspension copolymerisation of acrylonitrile and methyl methacrylate with divinyl benzene as a cross-agent, taken in percentage mass quantities of 9-12 % at concentration of 50-60 %, in the suspension medium in the presence of sponging agents (alkyl benzene, aviation kerosene) in percentage volume quantities of 40 % of the volume of monomers during heating and sustaining at 50°C temperature for 2 hours, 61°C for 2 hours, 65°C for 3 hours, 70°C for 2 hours, with subsequent basic hydrolysis of the nitrile group using a 25 % water solution of caustic sodium with gradual increase in temperature from 50°C to 110°C and sustenance at temperature of 110°C for a period of 10 hours.
EFFECT: obtaining of a subacid carboxylic cation exchange resin with high values of capacity and strength characteristics.
1 cl, 5 ex
SUBSTANCE: present invention relates to sorption hydrometallurgy of uranium. Described is a pyridine ionite based on a copolymer of styrene and divinylbenzene for sorbing uranium from solutions and pulp, distinguished by that the initial polymer matrix of the ionite additionally contains methacrylic acid in amount of 3.0-6.0 wt %.
EFFECT: obtaining an ionite with improved desorption characteristics; improved cost-performance ratio of the sorption-desorption process of extracting uranium from a solution.
2 cl, 3 tbl, 2 ex
SUBSTANCE: proposed is a method for synthesis of porous weakly-basic anionites through copolymerisation of acrylonitrile and divinylbenzene in the presence of blowing agents and a benzoperoxide polymerisation initiator, with subsequent aminolysis of the copolymers with polyamines with an elementa-y sulphur catalyst, where acrylonitrile and divinylbenzene are copolymerised at pressure 1.2-2.7 atm with addition into the polymerisation mixture of unsaturated compounds selected from a group comprising acrylic esters, styrene, methyl- and ethylstyrene, with content of acrylonitrile not less than 67.5 mol %, divinybenzene 8-20 % and molar ratio of acrylonitrile to the rest of the unsaturated components not greater than 2.5:1, and aminolysis is carried out with triethylene tetramine and diethylene triamine in the presence of 0.1-0.5 % elementary sulphur.
EFFECT: improved method.
1 cl, 4 ex, 1 tbl
SUBSTANCE: invention relates to methods of obtaining weakly acidic carboxylic cationites used in sorption processes in hydrometallurgy, biotechnology and heat engineering. A method is described for obtaining carboxylic cationites through suspension copolymerisation of acrylonitrile, divinylbenzene and methacrylic acid in the presence of a blowing agent and a polymerisation initiator - benzoyl peroxide in a medium of a water-salt solution of potato starch containing 20% sodium or ammonium chloride, or in a medium of an aqueous solution of cellulose, with subsequent alkaline hydrolysis of nitrile groups of the copolymer, with 71-76.5% acrylonitrile, 8-12% divinylbenzene, 5-10% methacrylic acid content in the polymerisation mixture and using a blowing agent in form of butylacetate in amount of 15-40% of the volume of the mixture of monomers.
EFFECT: design of an efficient method of obtaining weakly acidic carboxylic cationites.
4 ex, 1 tbl
SUBSTANCE: described is a deodorant particle having BET specific surface area of 10 m2/g or more, which is obtained via copolymerisation of monomers which include a cross-linking vinyl monomer and a vinyl monomer which bears the heteroaromatic ring. The invention also describes a method of producing the deodorant particle described above, which involves a step for copolymerisation of monomers which include a cross-linking vinyl monomer, and a vinyl monomer which bears the heteroaromatic ring, emulsion polymerisation of oil-in-water or precipitation polymerisation using an organic solvent whose solubility parameters differ from those of said monomers on absolute value by 0-2.0. Described is a deodorant fibre product containing said deodorant particle. The invention also describes a soaking article containing said deodorant particle.
EFFECT: obtaining deodorant particles which have good deodorising capacity and efficiently remove bad smells.
11 cl, 5 dwg, 10 tbl, 38 ex
SUBSTANCE: present invention relates to a mixed basicity anionite which can be used to extract noble metals from hydrometallurgical cyanide solutions and pulp. Described is a mixed basicity anionite for sorption of noble metals from cyanide solutions and pulp, containing benzyl dimethylamine and dibenzyl dimethylamine functional groups, obtained by treating a low-cross-linked porous copolymer of styrene, divinyl benzene and ethyl styrene with a batched mixture of monomers of similar composition, also containing a polymerisation initiator and a blowing agent, followed by secondary polymerisation to form an additional cross-linked polymer in amount of 30-75%, successive chlorination and amination thereof with dimethylamine to introduce benzyl dimethylamine and dibenzyl dimethylammonium functional groups.
EFFECT: improved cost/performance ratio of sorption extraction of noble metals from cyanide solutions and pulp.
1 cl, 3 tbl, 3 ex
SUBSTANCE: claimed invention relates to branched polymers and methods of their obtaining. Described is a branched polymer, consisting of 50-99.8 wt % (of the polymer weight) of units, formed by styrene and/or α-substituted alkyl styrenes - α-methyl-styrene, α-isopropyl-styrene and/or alkyl styrenes with substitution in a benzene ring - 4-methyl-styrene, 3-methyl-styrene, 2,5-dimethyl-styrene, p-tert-butyl-styrene, o-ethyl-styrene, m-ethyl-styrene, p-ethyl-styrene and/or halogen-substituted styrenes - 4-chloro-styrene, 4-bromo-styrene, 0.2-50 wt % of units, formed by isomers of divinylbenzene and/or its substituted analogues - o-divinylbenzene, m-divinylbenzene, p-divinylbenzene, and 0.0001-3.52 wt % of peroxide and/or hydroperoxide groups, with a weight part in it of oxygen atoms, present in the composition of functional groups, formed as a result of a radical-chain monomer or a polymer oxidation in the presence of oxygen - carbonyl, carboxyl, ketone, hydroxyl, peroxide, hydroperoxide, ether, ester groups, not more than 21.0 wt %. Also described are versions of methods of obtaining the said branched polymer, characterised by the fact that the methods are realised in the presence of dissolved in a liquid phase oxygen, concentration of which in the liquid phase is supported at the level not higher than 1.0×10-2 mol/l.
EFFECT: obtaining branched polymers with low content of peroxide groups and high molecular weight, which increases their thermal stability and prevents from changing physical-chemical characteristics in the process of storage and exploitation.
6 cl, 8 dwg, 2 tbl, 5 ex
SUBSTANCE: invention relates to a method of producing a sorbent for selective extraction of scandium ions. The method includes a step for acylation of a styrene and divinylbenzene copolymer with acetylchloride in dichloroethane solution in the presence of anhydrous aluminium chloride, washing and drying, a step for phosphorylation of the acylation product with phosphorus trichloride, a step for hydrolysis with ice water and final washing of the end product. The starting copolymer used is a macroporous copolymer of styrene and divinylbenzene. Acylation is carried out at the boiling point of the acetyl chloride solution. Phosphorylation is carried out by first holding the reaction mass at room temperature and then adding glacial acetic acid and further holding the reaction mass while stirring.
EFFECT: obtaining a complexing sorbent which is highly selective to scandium and improved process.
4 cl, 1 tbl, 2 ex
SUBSTANCE: said utility invention relates to the field of ion exchange with complexing and chelation, and may be used in the hydrometallurgy of non-ferrous, rare, and noble metals, in water treatment and water purification processes, the chemical industry, and for obtaining high purity substances. The method of obtaining selective sorption and ion-exchange materials includes treatment of amine-containing raw materials with formaldehyde and hypophosphorous acid. As the amine-containing raw materials, a product of enzymatic hydrolysis of natural proteins is used, i.e. peptides with a molecular weight of 700-1000 g/mol, and individual amino acids in the form of a 15-25% water solution. The synthesis process is carried out at 60-70°C.
EFFECT: simplification of technology; increased selectivity of synthesised products to required metal ions.
2 cl, 3 ex
SUBSTANCE: invention claims modified ion exchange resin, where at least one compound selected out of the following (A) and (B) compounds is linked by ion link to functional acid group of acid ion exchange resin, so that compound is linked by ion link to 0.1-50 mol % of total functional acid group number present in acid ion exchange resin: compound (A) is represented by formula 1, where P is phosphor atom; S is sulfur atom; H is hydrogen atom; R1 is alkylene group including 1 to 6 carbon atoms, where one fragment can include phenylene group; and each R2, R3 and R4 are independently (1) alkyl group including 1 to 6 carbon atoms, or (3) aryl group including 5 to 10 carbon atoms; and compound (B) is represented by formula 2, where P is phosphor atom; S is sulfur atom; H is hydrogen atom; each of R1 and R2 is alkylene group including 1 to 6 carbon atoms, where one fragment can include phenylene group; and each R3 and R4 are independently an aryl group including 5 to 10 carbon atoms. Also invention claims catalyst for obtaining bisphenols, based on this resin, and method of bisphenol obtaining. Invention claims methods of obtaining modified ion exchange resin (versions).
EFFECT: obtained catalyst with high selectivity to bisphenols, obtaining of bisphenol A with high acetone conversion grade.
9 cl, 10 ex
SUBSTANCE: invention concerns improvement technology for films based on polyvinyl alcohol with enhanced fire and heat resistance, and can be applied in various fields of industry, science, technology and agriculture. Method involves polyvinyl alcohol films processing by mix of 5-10% aqueous solution of methylphosphate borate and 5-10% aqueous solution of chitosan at the weight ratio of 1:1, and drying.
EFFECT: obtainment of non-toxic biologically degradable and environmentally safe films with enhanced fire and heat resistance.
1 tbl, 3 ex