Improving the water absorption capacity of crosslinked, water-sw

Details Improving the water absorption capacity of crosslinked, water-sw Improving the water absorption capacity of crosslinked, water-sw

1990-08-08

1993-01-19

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

52631843, C08F 614

Patent

active

051808048

ABSTRACT:
The water absorption capacity of crosslinked, water-swellable polymers is improved by a process in which a water-containing, finely divided polymer gel having a solids content of from 20 to 65% by weight is treated with steam at not less than 50.degree. C., the solids content of the water-containing polymer gel increasing by not more than 30% by weight, and the polymer gel is then dried in a conventional manner.

REFERENCES:
patent: 4286082 (1981-08-01), Tsubakimoto et al.
patent: 4769427 (1988-09-01), Nowakowsky et al.

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