Method of producing acylated vinylamine-containing polymer and use thereof as papermaking additive


D21H17/54 - obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen

FIELD: technological processes.

SUBSTANCE: invention describes a method for producing acylated vinylamine-containing polymer comprising steps of: a) conducting free radical polymerisation of N-vinylformamide in an aqueous solution; b) conducting alkaline hydrolysis to form vinylamine-containing polymer and c) reacting vinylamine-containing polymer with at least one acylating agent, wherein acylating agent is selected from a group consisting of carboxylic acid anhydride, acyl halide and mixtures thereof, and wherein acylation temperature ranges from about 20 to about 50C and wherein carboxylic acid anhydride is not a cyclic anhydride.

EFFECT: technical result consists in application of acylated polymer in making paper as additives for increasing strength in dry state, retention and dehydrating agents, as well as agents for inhibiting formation of deposits of resin and adhesive materials.

13 cl, 32 ex, 3 tbl

 



 

Same patents:

The invention relates to the field of pulp and paper industry, namely the method of production of paper pulp in the production of printing, book and magazine paper

FIELD: chemistry.

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

FIELD: chemistry.

SUBSTANCE: invention relates to polymers that are suitable for use in making rubber articles, such as tyre treads. The method of producing a functionalised polymer involves conducting a reaction between a polymer with an active terminal group, which contains a diene monomer moiety, and a compound which contains a disilylamino group and a group which is capable of reacting with polymers with an active terminal group selected from keto, thioketo, epoxy and epithio groups. The polymer contains a diene monomer moiety and a terminal moiety which contains a disilylamino group and a residue of a group which contains a heteroatom. Said terminal moiety has the general formula , where values of radicals are given in the claim. Also disclosed is a vulcanisate which contains said polymer, and an article made therefrom.

EFFECT: said polymers and articles made therefrom are characterised by improved tensile properties, improved wear resistance and fatigue resistance and low hysteresis loss.

15 cl, 7 tbl, 22 ex

FIELD: chemistry.

SUBSTANCE: invention relate to a method of producing water-soluble aliphatic polyamino acids which can be used in producing steel and cast iron corrosion inhibitors, as ampholytic surfactants and in production of structural materials as part of mould separating additives when forming wood chipboard and fibreboard. The method involves reaction of polyallylamine with aliphatic chlorinated acids of formula Cl(CH2)nCOOH, where n=1-4 with molar ratio of components of 1:1-1.73, respectively, in aqueous solution at temperature of 30-35C.

EFFECT: method enables to obtain polyamino acid with high output.

5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing polyalkenyl acylating agents. The method involves reaction of reactive polyalkene whose number-average molecular weight Mn ranges from 500 to 5000, containing terminal vinylidene groups in an amount greater than or equal to 30%, with enofil at temperature higher than 180C. The reaction takes place while heating for a period of time which is sufficient for converting over 15% of terminal vinylidene groups. The reaction must complete while heating in the presence of a reaction accelerator. The reaction accelerator is a Lewis acid selected from a tin, zinc, aluminium or titanium halide of formula MXy, where M denotes a metal, X denotes a halogen, for example chlorine, bromine or iodine, and y ranges from 2 to 4. Enofil is selected from a group comprising fumaric acid, itaconic acid, maleic acid, acrylic acid, methacrylic acid, crotonic acid, cinnamic acid and corresponding anhydrides or corresponding C1-C4-alkyl ethers.

EFFECT: short reaction time, relatively high output of the product and high degree of functionalisation.

13 cl, 7 tbl, 3 ex

The invention relates to the functionalized copolymers of para-alkylthiol and isoolefine

The invention relates to the field of synthesis of ion-exchange materials used for wastewater treatment and in particular to the extraction of chromium (VI) from solutions

FIELD: chemistry.

SUBSTANCE: described is method of obtaining polyallylamine by reaction of interaction of polyvinylacetic acid amide with mixture of sodium hypochloride and sodium hydroxide with their molar ratio polyvinylacetic acid amide : sodium hypochloride : sodium hydroxide respectively 1:1.13:1.05 at temperature 40-80C for 6-8 hours.

EFFECT: simplification and acceleration of method of polyallylamine obtaining.

6 ex

N, n-diallylvaline // 2533835

FIELD: chemistry.

SUBSTANCE: invention relates to the application of N,N-diallylvaline of formula given below for the synthesis of water-soluble polyelectrolytes.

EFFECT: obtained from N,N-diallylvaline novel polyelectrolytes with a regulated acidic-basic and hydrophilic-hydrophobic balance can find application as flocculants, coagulants, soil structurators and prolongers of medications.

1 dwg, 7 ex

N,n-diallyl leucine // 2529028

FIELD: chemistry.

SUBSTANCE: invention relates to use of N,N-diallyl leucine of formula for synthesis of a water-soluble polyelectrolyte. The novel polyelectrolytes obtained from N,N-diallyl leucine, which have a controlled acid-base and hydrophilic-hydrophobic balance, can be used as flocculants, coagulants, soil structuring agents and medicinal agent prolonging agents.

EFFECT: improved properties of the compound.

1 dwg, 7 ex

FIELD: chemistry.

SUBSTANCE: invention refers to graft copolymers applied in hair care cosmetic compositions. Graft copolymers are produced within radical graft copolymerisation of a) N-vinylformamide; b) one or several copolymerisable monomers of general formula (I) where n is 0.1, and R1 and R2 independently denote H, C1-C4alkyl, CN, COOH, for graft polymer basis; c) of general formula where R=H, CH3 n-5-50000. Invention allows for production of polymer possessing combination of properties as hair strengthening, hair wave keeping, provided hair thickness, complete solubility.

EFFECT: production of polymer possessing combination of properties as hair strengthening, hair wave keeping, provided hair thickness, complete solubility.

3 cl, 78 ex

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention describes water-soluble complexes of fullerene-C70 with poly-N-vinylamides of the general formula: Am-Bn wherein A means links of N-vinylpyrrolidone; B means links of N-vinulcaprolactam; m = 0-100 mole%; n = 0-100 mole%, i. e. in series comprising compounds including poly-N-vinylpyrrolidone, poly-N-vinylcaprolactam and copolymers of N-vinylpyrrolidone with N-vinylcaprolactam with the intrinsic viscosity value [η] = 0.22-0.73 dl/g in the content of fullerene-C70 2.2-3.3 wt.-%. Also, invention relates to a method for preparing water-soluble complexes of poly-N-vinylamides with fullerene-C70 by mixing poly-N-vinylamide solution in chloroform with fullerene-C70 solution in organic solvent followed by removal of solvents and isolation of complex from an aqueous extract. Substances of the general formula: Am-Bn are used as poly-N-vinylpyrrolidone wherein A means links of N-vinylpyrrolidone; B means links of N-vinylcaprolactam; m = 0-100 mole%; n = 0-100 mole%, i. e. poly-N-vinylpyrrolidone, poly-N-vinylcaprolactam and copolymers of N-vinylpyrrolidone with N-vinylcaprolactam show the intrinsic viscosity value [η] = 0.22-0.73 dl/g. Ortho-dichlorobenzene is used as a solvent for fullerene-C70 in the concentration of fullerene-C70 0.24-0.27 wt.-% in solution. Complexes can be used in preparing luminescent polymeric film materials and covers.

EFFECT: improved preparing method.

3 cl, 1 tbl, 5 ex

The invention relates to the field of polymeric cation and relates to methods of obtaining water-soluble high-molecular nitrogen-containing kationaktivnaya polymer used as a coagulant for wastewater treatment, fixer for adhesive substances, antistatic agent for fibers, the release of dyes
The invention relates to the field of macromolecular chemistry, namely, to a method for producing a water-soluble polymeric cation exchanger based dimethyldiallylammonium used as flocculants, coagulants etc

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention describes water-soluble complexes of fullerene-C70 with poly-N-vinylamides of the general formula: Am-Bn wherein A means links of N-vinylpyrrolidone; B means links of N-vinulcaprolactam; m = 0-100 mole%; n = 0-100 mole%, i. e. in series comprising compounds including poly-N-vinylpyrrolidone, poly-N-vinylcaprolactam and copolymers of N-vinylpyrrolidone with N-vinylcaprolactam with the intrinsic viscosity value [η] = 0.22-0.73 dl/g in the content of fullerene-C70 2.2-3.3 wt.-%. Also, invention relates to a method for preparing water-soluble complexes of poly-N-vinylamides with fullerene-C70 by mixing poly-N-vinylamide solution in chloroform with fullerene-C70 solution in organic solvent followed by removal of solvents and isolation of complex from an aqueous extract. Substances of the general formula: Am-Bn are used as poly-N-vinylpyrrolidone wherein A means links of N-vinylpyrrolidone; B means links of N-vinylcaprolactam; m = 0-100 mole%; n = 0-100 mole%, i. e. poly-N-vinylpyrrolidone, poly-N-vinylcaprolactam and copolymers of N-vinylpyrrolidone with N-vinylcaprolactam show the intrinsic viscosity value [η] = 0.22-0.73 dl/g. Ortho-dichlorobenzene is used as a solvent for fullerene-C70 in the concentration of fullerene-C70 0.24-0.27 wt.-% in solution. Complexes can be used in preparing luminescent polymeric film materials and covers.

EFFECT: improved preparing method.

3 cl, 1 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention refers to graft copolymers applied in hair care cosmetic compositions. Graft copolymers are produced within radical graft copolymerisation of a) N-vinylformamide; b) one or several copolymerisable monomers of general formula (I) where n is 0.1, and R1 and R2 independently denote H, C1-C4alkyl, CN, COOH, for graft polymer basis; c) of general formula where R=H, CH3 n-5-50000. Invention allows for production of polymer possessing combination of properties as hair strengthening, hair wave keeping, provided hair thickness, complete solubility.

EFFECT: production of polymer possessing combination of properties as hair strengthening, hair wave keeping, provided hair thickness, complete solubility.

3 cl, 78 ex

N,n-diallyl leucine // 2529028

FIELD: chemistry.

SUBSTANCE: invention relates to use of N,N-diallyl leucine of formula for synthesis of a water-soluble polyelectrolyte. The novel polyelectrolytes obtained from N,N-diallyl leucine, which have a controlled acid-base and hydrophilic-hydrophobic balance, can be used as flocculants, coagulants, soil structuring agents and medicinal agent prolonging agents.

EFFECT: improved properties of the compound.

1 dwg, 7 ex

N, n-diallylvaline // 2533835

FIELD: chemistry.

SUBSTANCE: invention relates to the application of N,N-diallylvaline of formula given below for the synthesis of water-soluble polyelectrolytes.

EFFECT: obtained from N,N-diallylvaline novel polyelectrolytes with a regulated acidic-basic and hydrophilic-hydrophobic balance can find application as flocculants, coagulants, soil structurators and prolongers of medications.

1 dwg, 7 ex

FIELD: chemistry.

SUBSTANCE: described is method of obtaining polyallylamine by reaction of interaction of polyvinylacetic acid amide with mixture of sodium hypochloride and sodium hydroxide with their molar ratio polyvinylacetic acid amide : sodium hypochloride : sodium hydroxide respectively 1:1.13:1.05 at temperature 40-80C for 6-8 hours.

EFFECT: simplification and acceleration of method of polyallylamine obtaining.

6 ex

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