Oligomeric benzil ketals and their use as photoinitiators

Details Oligomeric benzil ketals and their use as photoinitiators Oligomeric benzil ketals and their use as photoinitiators

1990-04-27

1992-03-10

McCamish, Marion E.

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 36, 522103, 522107, 522904, 522 44, 525471, C08F 250, C08F28301, C08G 218

Patent

active

050950444

ABSTRACT:
Compounds of the formula I ##STR1## in which n is 1-30 and X, Y, R, Ar.sup.1 and Ar.sup.2 are as defined in claim 1 can be prepared by reaction of a benzil dialkyl ketal with a diol. Depending on the molar ratio of the two reaction components, products having a different polycondensation degree n are obtained. the compounds can be used as photoinitiators.

REFERENCES:
patent: 3715293 (1973-02-01), Sandner
patent: 3878169 (1975-04-01), Guillet
patent: 3978133 (1976-08-01), Reiter
patent: 3998712 (1976-12-01), Hickman
patent: 4144156 (1979-03-01), Kuesters
patent: 4190602 (1980-02-01), Brunisholz
patent: 4672079 (1987-06-01), Li Bassi
C.A. 106: 6544j (1987).
C.A. 103: 88775k (1985).

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