Ethylenically substituted hydroxyalkylphenone derivatives, their use as photoinitiators, process for photopolymerization and photopolymerizable systems containing the derivatives.

摘要

The copolymerisable photoinitiators have the formula I …IMAGE… in which… R1 and R2 each denote H, C1-6-alkyl or phenyl,… R3 denotes H, C1-6-alkyl, C1-6-alkanoyl or the group Z,… R4 denotes H, halogen, C1-12-alkyl, C1-12-alkoxy, C1-12-alkylthio or the group -X[(CH2-CH2-O)n-Z]m and… X denotes O, S or N… n denotes the numbers 0 to 4,… m denotes the number 1 if X is O and S or the numbers 1 and 2 if X is N… Z denotes the group -CO-CR=CR'R''… where R, R', R'' each denote H or CH3,… at least one of the radicals R3 or R4 always containing the group Z.