Water-absorbent polymer having improved properties

Details Water-absorbent polymer having improved properties Water-absorbent polymer having improved properties

1992-10-14

1995-09-05

Kulkosky, Peter F.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Matrices

424443, 526323, 526326, 5263183, 526330, 5253295, C08F22020, A61F 1300, A61K 944

Patent

active

054477271

ABSTRACT:
The subject invention provides a surface-crosslinked water-absorbent polymer having improved properties. The subject invention further pertains to a process for preparing such a polymer. Through the use of a preferred primary crosslinking agent coupled with surface crosslinking, desirable absorptive properties are achieved. Suitable primary crosslinking agents include methylenebisacrylamide, bis(acrylamido)acetic acid and its salts, allyl acrylate, allyl methacrylate and esters or amides having both a vinyl and an allyl functionality.

REFERENCES:
patent: 4734478 (1988-03-01), Tsubakimoto et al.
patent: 5026800 (1991-06-01), Kimura et al.

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