| 摘要 |
Compounds of the formula I, II or III <IMAGE> (I) <IMAGE> (II) <IMAGE> (III) in which Ar and Ar' are an oxygen-containing aromatic radical, R1 and R2 are a monovalent hydrocarbon radical which is substituted or unsubstituted, or R1 and R2 together form alkylene, oxaalkylene or azaalkylene, R3 is a direct bond or a divalent hydrocarbon radical, X and X' are a monovalent amino group and Y is a divalent amino or diamino group, are excellent photoinitiators for the photocuring of colored, especially pigmented, compositions containing an olefinically unsaturated, photopolymerizable binder. |
