Process for preparing water-soluble polymers

Details Process for preparing water-soluble polymers Process for preparing water-soluble polymers

1985-01-04

1987-03-03

Marquis, Melvin I.

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 80, 522 14, 522 18, 522 72, 522 77, 522 78, 522 79, 522 84, 522173, 522175, 522182, 522910, 522902, 526 62, 526 81, C08F 250, C08F 210, C08F 2006, C08F 2044

Patent

active

046475982

ABSTRACT:
An improved process for preparing a water-soluble polymer having an excellent water solubility and a high molecular weight, which comprises subjecting a thin layer of an aqueous solution of a water-soluble vinyl monomer to polymerization on a solid support, covering the thin layer with a substantially water-insoluble organic material, e.g. a paraffin, a silicone oil or a low molecular polyethylene, and/or a slightly water-soluble or substantially water-insoluble alkylene oxide adduct at least at a point of time when the aqueous monomer solution has not freely flowed, and further continuing the polymerization.

REFERENCES:
patent: 3023122 (1962-02-01), de Pataky
patent: 3312644 (1967-04-01), Miyairi
patent: 4325794 (1982-04-01), Hunter
patent: 4415417 (1983-11-01), Bush

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