Process for producing water-absorbing resins

Details Process for producing water-absorbing resins Process for producing water-absorbing resins

1983-07-27

1985-06-18

Kight, John

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

Synthetic resins

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

5253306, 525355, 525369, 525384, 525450, 525451, 526320, 526225, 5263285, 5263297, C08F 812

Patent

active

045241864

ABSTRACT:
A process for producing an absorbent resin, which comprises polymerizing 1 mole of a lower alkyl acrylate and 0.07 to 0.5 mole of a polyhydric alcohol ester of a monoethylenically unsaturated carboxylic acid in an aqueous medium in the absence of an emulsifying agent, saponifying the resulting polymer with a basic substance in a water-lower alcohol medium, and then neutalizing the saponification product with an acid.

REFERENCES:
patent: 3926891 (1975-12-01), Gross et al.
patent: 3954721 (1976-05-01), Gross
patent: 3957711 (1976-05-01), Powanda et al.
patent: 3966679 (1976-06-01), Gross
patent: 3991018 (1976-11-01), Strop et al.
patent: 4090013 (1978-05-01), Ganslaw et al.
patent: 4313863 (1982-02-01), Handa et al.

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