| abstract |
The O-acyloxime compounds of formulas I, II, III and IV, wherein R 1 is n. is phenyl, C 1-20 -alkyl or C 1-6-20 alkyl optionally interrupted by -O-, C 2-20-20 alkanoyl or benzoyl; .1.n. is C 2-12 -alkoxycarbonyl or phenoxycarbonyl; R.sub.1 is C.sub.2-12 .alkoxycarbonyl, or R.sub.1 is phenoxycarbonyl, or R.sub.1 is -CONR.sub .10.nRsub.11.n. or CN; R.sub.2.n. is C 1-6 n -alkanoyl, C 5-6 n -alkenoyl, benzoyl, C 5-6 n -alkoxycarbonyl or phenoxycarbonyl; R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.6. and R.sub.7.n. are hydrogen, halogen, C.sub.1-12 .alkyl, cyclopentyl, cyclohexyl, phenyl, benzyl, benzoyl, C.sub.2-12 .alkanoyl, C.sub.2-12. alkoxycarbonyl, phenoxycarbonyl or an OR.sub.8 group, SR.sub.9, s.sub.9, s.sub.2, ss.sub.9. or NR.sub.10.n.R.sub.2.n; R5 is hydrogen, halogen, C.sub.1-12 alkyl, cyclopentyl, cyclohexyl, R < 5 > , phenyl, benzyl, benzoyl, C.sub.2-12 .alkanoyl, C.sub.2-12 .alkoxycarbonyl, phenoxycarbonyl, or OR.sub.8, SR.sub.9 .n., SOR.sub.9.n, S.sub.2.nRsub.9.n, NR.sub.10.nRsub.11.n; with the proviso that at least one of the groups R 3, R 3, R 4, R 5, R 6, and R 7 are R 7 .n., and R.sub.4., R.sub.5, and R.sub.6 is SR.sub.9.n. or NR.sub.10.n.R.sub.2.n; R.sub.8, R.sub.9, R.sub.10.t. and R.sub.11.n. are, for example, hydrogen, C 1-8 alkyl, phenyl; they are suitable as photopolymerization initiators of radically polymerizable compounds. Furthermore, the compositions containing these compounds and their use for the manufacture of various materials, e.g. |