| 摘要 |
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.
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