Polymerizing unsaturated monomers with gem-diperoxyester catalys

Details Polymerizing unsaturated monomers with gem-diperoxyester catalys Polymerizing unsaturated monomers with gem-diperoxyester catalys

1980-07-07

1983-01-25

Briggs, Sr., Wilbert J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260453RZ, 525 27, 526328, 526330, 526344, 526346, 526352, C08F 436, C08F 1406

Patent

active

043704590

ABSTRACT:
Gem-diperoxyesters of the formula: ##STR1## where R is selected from methyl and ethyl; R.sub.1 is ethyl when R is ethyl; R.sub.1 is hydroxyalkyl of 1 to 7 carbon atoms when R is methyl; and each R.sub.2 is ##STR2## where each of R.sub.3, R.sub.4, and R.sub.5 is selected from hydrogen and alkyl, provided not more than one of R.sub.3, R.sub.4, and R.sub.5 is hydrogen, R.sub.3, R.sub.4, and R.sub.5 collectively containing from 2 to 12 carbon atoms.
The compounds are particularly efficient at varying temperatures from ambient to 60.degree. C. for the initiation of the polymerization of vinyl chloride. They also have high efficiency in the curing of polyester resins and in the polymerization of other monomers and comonomers having ethylenic unsaturation.

REFERENCES:
patent: 4129613 (1978-12-01), Lewis et al.

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