Oxime ester photoiniators having a combined structure

Details Oxime ester photoiniators having a combined structure Oxime ester photoiniators having a combined structure

2007-03-13

2007-03-13

Walke, Amanda (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

C562S030000, C562S058000

Reexamination Certificate

active

10480146

ABSTRACT:
Compounds of the formulae I, II and IIIwherein R1is for example hydrogen, C3–C8cycloalkyl, C1–C12alkyl, phenyl unsubstituted or substituted; R2and R2′ for example are hydrogen, C1–C20alkyl, C3–C8cycloalkyl or phenyl, unsubstituted or substituted, or areAr1is for example phenyl, optionally substituted by e.g.Ar2is for example phenylene, optionally substituted e.g. by —(CO)R7, (D), (E) or (F); Ar3is for example phenyl; M1, M2and M3are, for example, C1–C20alkylene; M4is for example direct bond, —O—, —S—, —Y—(C1–C10alkylene)-Y′—, optionally substituted; Y and Y′ are for example a direct bond or —O—; R7is for example hydrogen, C1–C20alkyl or phenyl, optionally substituted; R8, R9, R8′ and R9′ are for example hydrogen or C1–C12alkyl, exhibit an unexpectedly good performance in photopolymerization reactions.

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