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

C - Chemistry, Metallurgy

07

C

402/373, 260/247

C07C 49/84 (2006.01) C07C 45/51 (2006.01) C07C 45/71 (2006.01) C07D 251/34 (2006.01) C08F 20/00 (2006.01) C08G 4/00 (2006.01)

Patent

CA 1304372

Compounds of the formula I (see fig. I) in which n is 1-30 and X, Y, R, Ar1 and Ar2 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.

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