New difunctional photoinitiators

Details New difunctional photoinitiators New difunctional photoinitiators

C - Chemistry, Metallurgy

07

F

C07F 7/18 (2006.01) C07C 45/46 (2006.01) C07C 45/63 (2006.01) C07C 45/64 (2006.01) C07C 45/68 (2006.01) C07C 49/82 (2006.01) C07C 49/83 (2006.01) C07C 49/84 (2006.01) C08F 2/46 (2006.01) C08F 2/50 (2006.01) C08J 3/28 (2006.01) C08L 23/04 (2006.01) C09D 183/04 (2006.01) G03F 7/031 (2006.01)

Patent

CA 2486784

The invention relates to novel photoinitiators of formula (I) wherein A is -0- , -CH2-, CH(CH3)- or -C(CH3)2-, and R is methyl or trimethylsilyl, and R may in addition be hydrogen when A is simultaneously the group -C(CH3)2-. The invention relates also to compositions comprising (A) at least one ethylenically unsaturated compound, (B) a photoinitiator of formula (I), (C) optionally further binders or additives, (D) optionally further photoinitiators or co-initiators. Composition comprising (A) an ethylenically unsaturated compound that contains at least one aminoacrylate, (B) a photoinitiator of formula (II) or (III), (C) optionally further binders or additives, (D) optionally further photoinitiators or co-initiators.

L'invention concerne de nouveaux photo-initiateurs de formule (I), dans laquelle A représente -0-, -CH¿2?-, CH(CH¿3?)- ou -C(CH¿3?)¿2-?, et R représente méthyle ou triméthylsilyle, et R peut représenter également l'hydrogène, lorsque A représente simultanément le groupe -C(CH¿3?)¿2?-. Cette invention a aussi pour objet des compositions renfermant (A) au moins un composé insaturé sur le plan éthylénique, (B) un photo-initiateur de formule (I), (C) facultativement d'autres liants ou additifs, (D) facultativement d'autres photo-initiateurs ou co-initiateurs. L'invention a trait à une composition comprenant (A) un composé insaturé sur le plan éthylénique qui contient au moins un aminoacrylate, (B) un photo-initiateur de formule (II) ou (III), (C) facultativement d'autres liants ou additifs, (D) facultativement d'autres photo-initiateurs ou co-initiateurs.

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