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

1988-08-18

1990-08-21

Reamer, James H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

564342, 564443, 564219, 564220, 564185, 544220, 568 43, C07C 49213

Patent

active

049507958

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 et al.
patent: 3878169 (1975-04-01), Guillet et al.
patent: 3978133 (1976-08-01), Reister et al.
patent: 3998712 (1976-12-01), Hickmann et al.
patent: 4144156 (1979-03-01), Kuesters et al.
patent: 4190602 (1980-02-01), Brunesholz et al.
patent: 4672079 (1987-06-01), Li Bassi et al.

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