Process for the preparation of finely divided, water-swellable p

Details Process for the preparation of finely divided, water-swellable p Process for the preparation of finely divided, water-swellable p

1991-05-03

1993-01-19

Nutter, Nathan M.

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

Synthetic resins

From carbohydrate or derivative as a reactant

527312, 527313, 527314, 527315, C08F25100, C08F 232, C08B 3100, C08B 1500

Patent

active

051808005

ABSTRACT:
Finely divided polysaccharide graft polymers having a high absorption capacity for urine and water are prepared by semi-continuous reverse-phase suspension polymerization, in which an aqueous solution of an unsaturated carboxylic acid and an initiator is metered continuously into a suspension of a polysaccharide in an organic solvent and the polymer obtained is subsequently partial dehydrated and the crosslinked.

REFERENCES:
patent: 4131576 (1978-12-01), Iovine et al.
patent: 4229326 (1980-10-01), Morin et al.
patent: 4375535 (1983-03-01), Kightlinger et al.
patent: 4705825 (1987-11-01), Symes et al.
patent: 4777232 (1988-10-01), Heidel
patent: 4833201 (1989-05-01), Starzewski et al.
patent: 5032659 (1991-07-01), Heidel
Billmeyer, Jr. "Textbook of Polymer Science", John Wiley & Sons, 1984, pp. 126-127.

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