New difunctional photoinitators
AssigneeCiba Specialty Chemicals Corporation
InventorsRinaldo Husler, Andre Fuchs
Life of this patent
Estimating the term…
Abstract
The invention relates to novel photoinitiators of formula (I) wherein A is —O—, —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. Compositions 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.
Claims14
A photoinitiator of formula I
- wherein
- A is —O—, —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—.
A 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.
Dependencies are inferred from the claim text.