Photoinitiator copolymers

Details Photoinitiator copolymers Photoinitiator copolymers

C - Chemistry, Metallurgy

08

F

402/1, 260/328,

C08F 220/10 (2006.01) C08F 2/50 (2006.01) C08F 246/00 (2006.01) G03F 7/031 (2006.01) G03F 7/033 (2006.01)

Patent

CA 1336091

The invention relates to photoinitiator copolymers having molecular weights between 500 and 1,000,000, obtainable by copolymerisation of at least two different monomer units of the formulae I and II in the I/II ratio =1-100. (I) Image (II) Image in which Ra and Rb are, independently of one another, H, C1, CN, C1-C6-alkyl or phenyl, X is, for example, CO-, COO- or O-CO- and IN and A are, for example, a basic photoinitiator structure of the formula Image wherein R is -CR3R4R5 or Image and R1 is H, halogen, C1-C12- alkyl or C1-C12-alkoxy, R3 and R4 are, for example, H or C1-C12- alkyl and R5 is, for example, -OH or C1-C6-alkoxy. The use of these copolymers as photoinitiators in the photopolymerisation of ethylenically unsaturated compounds or systems containing such compounds is also disclosed.

599373

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