Absorbent polymers, their manufacture and uses

Details Absorbent polymers, their manufacture and uses Absorbent polymers, their manufacture and uses

1988-02-29

1990-12-25

Kulkosky, Peter F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526287, 5263031, 526307, 5263072, 5263073, 5263075, 5263076, 526310, 5263184, 52631841, 526332, 526320, 604372, C08F 3004, C08F 1230, C08F 2054, A61F 1315

Patent

active

049804340

ABSTRACT:
The properties of absorptive synthetic polymer particles formed by polymerisation of water soluble monomers such as sodium acrylate or acrylamide with a cross linking agent are improved, especially as regards absorptive capacity for aqueous electrolytes, by copolymerising the monomers with an ethylenically unsaturated monomer that includes a pendant group --A.sub.m B.sub.n A.sub.p R where B is ethyleneoxy, n is at least 2, A is propyleneoxy or butyleneoxy, m and p are each less than n and are preferably zero, and R is a hydrophobic group.

REFERENCES:
patent: 3436378 (1969-04-01), Azorlosa et al.
patent: 3499876 (1970-03-01), Field et al.
patent: 3880818 (1975-04-01), Shen et al.
patent: 4224427 (1980-09-01), Mueller et al.
patent: 4227582 (1981-07-01), Mueller
patent: 4277582 (1981-07-01), Mueller et al.
patent: 4535098 (1985-08-01), Evani et al.

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