PHOTOGENERATION OF AMINES FROM .ALPHA.-AMINOACETOPHENONES

摘要

Compounds of formula I, II or III , wherein X is a divalent radical; Y is C1-C6alkylene, cyclohexylene or a direct bond; Ar1 is an aromatic radical as defined in claim 1, R1 and R2 are each independently the other, inter alia, a radical of formula , in which p is zero or 1, or a radical of formula , R3 is, inter alia, hydrogen, C1-C12alkyl, C5-C12cycloalkyl or phenyl-C1-C3al kyl;R4 is, inter alia, C1-C12alkyl, C5-C12cycloalkyl, ph enyl-C1-C3alkyl or phenyl; or an acid addition salt of a compound of formula 1, II or III; are useful as photosensitive base catalysts in base crosslinking composition s.