Method for the preparation of cationic, water-soluble polymers a

Details Method for the preparation of cationic, water-soluble polymers a Method for the preparation of cationic, water-soluble polymers a

1994-06-14

1995-08-29

Lipman, Bernard

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253282, C08F 800

Patent

active

054461073

ABSTRACT:
A method for the preparation of water-soluble, cationic amine polymers by the continuous or batch-wise reaction of a polymer having primary, secondary or tertiary amine functions in its side chain or primary chain as a starting material, wherein the reaction is carried out with an epoxide, a glycidyl ether or a mixture of different epoxides and glycidyl ethers in aqueous solution without additional solvent at a temperature of 30.degree. to 90.degree. C. and at a pH of 8 to 14 within 3 to 30 minutes, the epoxides or glycidyl ethers are added as one batch or in portions, and after adjusting the pH of the aqueous solution of the cationic polymer, which is >13.5 after the reaction with epoxide or glycidyl ether, using a mineral or carboxylic acid, the product solution is obtained without additional work-up steps.

REFERENCES:
patent: 4806591 (1989-02-01), Probst et al.
patent: 4885345 (1989-12-01), Fong
patent: 4895621 (1990-01-01), Hassler
patent: 4970290 (1990-11-01), Fong
patent: 5041503 (1991-08-01), Duplaise et al.
Research Disclosure, Apr. 1980, p. 140; #19211: "Alkene oxide quaternaries of mannich derivates polyacrylamide".

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