Process for producing powdered copolymers of ethylenically unsat

Details Process for producing powdered copolymers of ethylenically unsat Process for producing powdered copolymers of ethylenically unsat

1978-06-27

1981-01-06

Kight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526271, 526272, 526319, 526321, 526920, 366 69, C08F 200, C08F22206, C08F22208, B01F 700

Patent

active

042437849

ABSTRACT:
A powdered copolymer of an ethylenically unsaturated compound having a terminal double bond such as diisobutylene, styrene, an acrylate or an methacrylate and maleic anhydride or an ester thereof can directly be obtained by a polymerization process which comprises polymerizing the monomer mixture in a kneader or a Banbury type mixer in the presence or absence of a poor solvent for the copolymer to be produced to form a highly viscous resin phase containing the copolymer produced and the starting monomers dissolving said copolymer, kneading the highly viscous resin phase, proceeding further the polymerization reaction while kneading and shearing the resin phase to produce solid aggregates, and powdering said aggregates to produce a powdered copolymer.

REFERENCES:
patent: 2430313 (1947-11-01), Vana
patent: 3836510 (1974-09-01), Takahashi
patent: 3925329 (1975-12-01), Heinrich et al.

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