Process for preparation of high water-absorbent polymer beads

Details Process for preparation of high water-absorbent polymer beads Process for preparation of high water-absorbent polymer beads

1982-03-22

1984-05-01

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 37, 524 38, 524 39, 524 42, 524457, 524502, 524513, 524733, 523202, 523207, C08L 500, B01J 3106

Patent

active

044462611

ABSTRACT:
Water-insoluble, high water-absorbent polymer beads are prepared by dispersing and suspending an aqueous solution of a water-soluble, ethylenically unsaturated monomer containing a small amount of a crosslinking agent in a dispersion medium of a hydrocarbon or a halogenated aromatic hydrocarbon, carrying out the bead polymerization in the presence of a water-soluble radical polymerization initiator and a protecting colloid comprising a cellulose ester or cellulose ether which is oil-soluble at the polymerization temperature, and separating the resulting beads.

REFERENCES:
patent: 3498938 (1970-03-01), Grommers et al.
patent: 4093776 (1978-06-01), Aoki et al.
patent: 4135943 (1979-01-01), Morishita et al.

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