Hydrophilic polymer based on acrylic acid and alkali metal acryl

Details Hydrophilic polymer based on acrylic acid and alkali metal acryl Hydrophilic polymer based on acrylic acid and alkali metal acryl

1990-03-16

1991-10-01

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...

525119, C08F 800

Patent

active

050534602

ABSTRACT:
Hydrophilic polymer, as microbeads insoluble in water, based on acrylic acid and an alkali metal acrylate constituted by an acrylic acid - potassium acrylate copolymer, cross-linked with 100 ppm to 3,000 ppm relative to the total weight of monomers of one or more cross-linking agents chosen from the group constituted by the products of general formula I: ##STR1## A=a bivalent radical derived from a C.sub.3 -C.sub.6 alkane presenting an absorption capacity for a salty physiological solution of 30 to 70 g per gram and from 10 to 35 g per gram under pressure, preparation process and use notably in articles of hygiene.

REFERENCES:
patent: 4552938 (1985-11-01), Mikita et al.
patent: 4654393 (1987-03-01), Mikita et al.
patent: 4703067 (1987-10-01), Mikita et al.
patent: 4818796 (1989-04-01), Das et al.

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