Oxime ester photoinitiators

Details Oxime ester photoinitiators Oxime ester photoinitiators

2005-09-27

2005-09-27

Davis, Brian J. (Department: 1621)

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

Organic compounds

Amino nitrogen containing

C564S254000, C548S444000, C548S561000, C549S017000, C549S027000, C549S075000, C549S076000

Reexamination Certificate

active

06949678

ABSTRACT:
Compounds of the formulae I, II, III, IV and Vwherein R1i.a. is C4-C9cycloalkanoyl, C1-C12alkanoyl, C4-C6alkenoyl, or benzoyl; R2is for example phenyl, C1-C20alkyl, C3-C8cycloalkyl, C2-C20alkanoyl, or benzoyl; Ar1is R4S-phenyl or NR5R6-phenyl, each of which optionally is substituted; or Ar1i.a. isoptionally substituted; or Ar1is naphthyl or anthracyl each of which is unsubstituted or substituted; or Ar1is benzoyl, naphthalenecarbonyl, phenanthrenecarbonyl, anthracenecarbonyl or pyrenecarbonyl, each of which is unsubstituted or substituted, or Ar1is 3,4,5-trimethoxyphenyl, phenoxyphenyl or biphenyl; Ar2i.a. isoptionally substituted, or naphthyl or anthracyl, each of which is unsubstituted or substituted, x is 2 or 3; M1when x is 2, for example is phenylene, naphthalene, anthracylene, each of which optionally is substituted; M1, when x is 3, is a trivalent radical; M2for example isM3is for example C1-C12alkylene, cyclohexylene, or phenylene; n is 1-20; R3is for example hydrogen or C1-C12alkyl; R3′ i.a. is C1-C12alkyl; substituted or —O-interrupted C2-C6alkyl; R4is for example hydrogen, or C1-C12alkyl; and R5and R6independently of each other i.a. are hydrogen, C1-C12alkyl, or phenyl; are suitable as photoinitiators in particular in resist applications.

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