Method for production of absorbent resin

Details Method for production of absorbent resin Method for production of absorbent resin

1992-01-21

1995-12-26

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524502, 524916, 528502R, C08J 300, C08K 320, C08L 3300

Patent

active

054788790

ABSTRACT:
A method for the production of an absorbent resin, which method comprises mixing 100 parts by weight of (A) a hydrated gel of absorbent resin which is resulted from aqueous solution polymerization having a polymerization ratio in the range of from 60 to 99%, an average particle diameter in the range of from 0.1 to 200 mm, a water content in the range of from 30 to 90% by weight, and a temperature in the range of from 40.degree. to 110.degree. C., with from 1 to 50 parts by weight of (B) a substantially dry fine absorbent resin powder having an average particle diameter smaller than the average particle diameter assumed by said hydrated gel of absorbent resin (A) while in a dried state, then raising the polymerization ratio of said hydrated gel of absorbent resin (A) to a level higher than the polymerization ratio of said hydrated gel when being mixed.

REFERENCES:
patent: 4103080 (1978-07-01), Bohmer et al.
patent: 4920202 (1990-04-01), Irie et al.
patent: 4950692 (1990-08-01), Lewis
patent: 4970267 (1990-11-01), Bailey
patent: 5064582 (1991-11-01), Sutton et al.

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