Process for producing granular polymer having uniform fine parti

Details Process for producing granular polymer having uniform fine parti Process for producing granular polymer having uniform fine parti

1979-12-28

1982-04-06

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526336, C08F 220

Patent

active

043236642

ABSTRACT:
Granular polymers having a relatively uniform fine particle size as small as about 10 .mu.m can be produced in high yield by suspension polymerization by conducting the polymerization of one or more crosslinkable polymerizable monomers, non-crosslinkable polymerizable monomers or a mixture thereof in the presence of a suspension agent, and if necessary, together with a suspension assistant and/or a non-reactive organic solvent, under stirring accompanying high speed shearing until the percentage conversion becomes 1 to 50% and continuing the polymerization under stirring without the accompanying high speed shearing and mechanical cutting.

REFERENCES:
patent: 3682877 (1972-08-01), Czekay et al.
patent: 4071670 (1978-01-01), Vanzo et al.
Abstract, Japanese Patent Application Kokai, No. 145.

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