Mass polymerization process

Details Mass polymerization process Mass polymerization process

1978-11-06

1980-09-02

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 87, 526320, 526325, C08F21816

Patent

active

042207444

ABSTRACT:
A process for the preparation of polymers by free-radical, bulk polymerization comprising charging a reaction vessel with from about 5 to 15 percent by weight of an alpha, beta-unsaturated monomer which does not, under the conditions of the reaction, undergo free-radical polymerization, e.g., an alkyl ester of fumaric or maleic acid; thereafter adding to the reaction vessel from about 95 to 85 percent by weight of an acrylic monomer which, under the conditions of the reaction, undergoes free-radical polymerization in bulk form, blended with a free-radical initiator and controlling said addition in order that the acrylic monomer is present in said reaction kettle in an amount of less than about 20 percent, and preferably less than about 5 percent, during the course of the reaction. The process proceeds without excessive exothermy, permitting the complete polymerization in a synthetic resin reactor.

REFERENCES:
patent: 2298039 (1942-10-01), D'Alelio
patent: 2544692 (1951-03-01), Kugler et al.
patent: 2642414 (1953-06-01), Bauer et al.

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