Patent ID: 6090865
Filing Date: 2000-07-18
Classification: B33Y,C07D,C08F,G03F,Y10S

Abstract:
A photoinitiator system comprising (a) at least one O-alkylated aromatic nitrogen-heterocycle amine oxide cation salt of the formula I ##STR53## X is CH, C--CH.sub.3, C--Cl, C--O--C.sub.1 -C.sub.8 alkyl or N; R is C.sub.1 -C.sub.6 alkyl, benzyl, CH.sub.2 COOR.sub.3 or a group ##STR54## R.sub.1 is C.sub.1 -C.sub.8 alkoxy, C.sub.1 -C.sub.12 alkyl, halogen, NO.sub.2, benzyloxy or phenyloxy, wherein the phenyl ring in the benzyloxy or phenyloxy group is unsubstituted or substituted by C.sub.1 -Cl.sub.2 alkyl, C.sub.1 -C.sub.6 alkoxy, halogen or CF.sub.3 ;R.sub.2 is C.sub.1 -C.sub.8 alkoxy, C.sub.1 -C.sub.12 alkyl, benzyloxy or phenyloxy, wherein the phenyl ring in the benzyloxy or phenyloxy group is unsubstituted or substituted by C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.6 alkoxy, halogen or CF.sub.3 ;R.sub.3 is hydrogen, C.sub.1 -C.sub.12 alkyl or benzyl;Y is unsubstituted or C.sub.1 -C.sub.6 alkoxy-substituted C.sub.1 -C.sub.6 alkyl, or Y is C.sub.1 -C.sub.6 alkoxy, halogen, CF.sub.3, NO.sub.2, CF.sub.3 O, benzyloxy or phenyloxy, wherein the phenyl ring in the benzyloxy or phenyloxy group is unsubstituted or substituted by C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.6 alkoxy, halogen or CF.sub.3 or, if n is two and both Y are alkoxy these alkoxy groups may form a dioxolane or dioxane fused to the phenyl of the styryl residue;n is 1 to 4; andL is an anion and optionally (b) at least one electron donor compound.