Novel surface-active polysiloxane photoinitiators

Details Novel surface-active polysiloxane photoinitiators Novel surface-active polysiloxane photoinitiators

C - Chemistry, Metallurgy

08

G

C08G 77/38 (2006.01) C08F 2/50 (2006.01) G03F 7/075 (2006.01)

Patent

CA 2525412

Polymeric photoinitiators of the formula I or II wherein n and m independently of one another are 3-5; o is 10-16; p is 4-8; R is phenyl-CO-CO-O-; Y and Y' independently of one another are C1-C10alkylene or -[(CH2)a-O-(CH2)b]c- wherein a is 2-10, b is 0-10, c is 1-3; with the proviso that they are, however, at least 1 if the methylene group in question is between two oxygen atoms.

L'invention concerne des photo-initiateurs polymères représentés par la formule (I) ou (II). Dans ces formules, n et m représentent de façon indépendante 3-5; o représente 10-16; p représente 4-8; R représente un phényle -CO-CO-O-; Y et Y' représentent de façon indépendante un alkylène en C¿1?-C¿10 ?ou -[(CH¿2?)¿a?-O-(CH¿2?)¿b?]¿c?-, dans cette formule, a représente 2-10, b représente 0-10, c représente 1-3; à condition, cependant, qu'ils représentent au moins 1 si le groupe méthylène en question se trouve entre deux atomes d'oxygène.

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