Photopolymerization initiator and method of photopolymerization

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...

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522 60, 522104, 522177, 522182, 522183, 526228, 560302, C08F 250, C08F 436, C08F 2006, C08F 2010

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active

047771917

ABSTRACT:
Photopolymerization initiators of the general formula: ##STR1## wherein R.sub.1 and R.sub.1 ' independently stand for a tertiary alkyl group or a tertiary aralkyl group and R.sub.2 and R.sub.2 ' independently stand for a hydrogen atom, a tertiary alkoxy group, or a tertiary aralkyloxy group are disclosed. They are useful for effecting polymerization of radically polymerizable unsaturated compounds. Tetra peroxy esters of benzophenone are preferred.

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Chemical Abstracts, vol. 92, 1980, p. 188.
Chemical Reviews, vol. 68, No. 2, Mar. 25, 1968, Oster et al. "Photopolymerization of Vinyl Monomers".
J. Oil Col. Chem. Assoc., 1976, 59, 166-170, A. Pryce, "The Technological Literature Relating to Polymerisation Photoinitiators".

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