Process for producing an aqueous dispersion of a water-soluble c

Details Process for producing an aqueous dispersion of a water-soluble c Process for producing an aqueous dispersion of a water-soluble c

1997-06-09

1999-08-10

Cain, Edward J.

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

Synthetic resins

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

5253284, 525374, C08F 1600

Patent

active

059360429

ABSTRACT:
A process for producing an aqueous dispersion of a water-soluble cationic polymer which process comprises modifying a polymer obtained by homopolymerization of an N-vinylcarboxylic acid amide or copolymerization of an N-vinylcarboxylic acid amide and a vinyl monomer copolymerizable with the N-vinyl carboxylic acid amide with an acid in an aqueous medium in the presence of a nitrate ion. The process can produce an aqueous dispersion of a water-soluble cationic polymer having a high molecular weight from the above water-insoluble polymer easily in a single step without causing adverse effects on the handling property while the fluidity is maintained.

REFERENCES:
patent: 4957977 (1990-09-01), Itagahi et al.
patent: 5464908 (1995-11-01), Sato et al.

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