Photo-initiators for photopolymerization of unsaturated systems

摘要

PCT No. PCT/EP86/00183 Sec. 371 Date Dec. 3, 1986 Sec. 102(e) Date Dec. 3, 1986 PCT Filed Mar. 27, 1986 PCT Pub. No. WO86/05777 PCT Pub. Date Oct. 9, 1986.Compounds of the general formula I IMAGE (I) wherein Z is CR1R2(OR3) or phenyl, R1 being H, C1-6-alkyl or phenyl, R2 being H, C1-6-alkyl or C1-6-alkoxy and R3 being H, C1-6-alkyl or C1-6-alkanoyl and Z' is Y-[(CH2)m-X]n-, X being CH2 or 0, Y being OH; COOH or SO3H including the alkali metal, alkaline earth metal or ammonium salts thereof and also the salts thereof with organic nitrogen bases; or NRR' in which R and R' are in each case H, C1-20-alkyl or C1-4-hydroxyalkyl, if appropriate quaternized or in the form of the acid addition salts, and n and m each being the numbers 1-4, are excellently suitable as photoinitiators for the photopolymerization of ethylenically unsaturated compounds, in particular in aqueous systems.