| abstract |
Ar is, for example, phenylene, biphenylene or naphthylene, all of which are unsubstituted or C 1 -C 4 alkyl, C 2 -C 4 alkenyl, CN, OR 11 , SR 11 , CH 2 OR 11 , COOR 12 Substituted with CONR 12 R 13 or halogen; R 1 , R 2 , R 7 and R 8 are independently of one another hydrogen or C 1 -C 6 alkyl; R 3 and R 5 are both And R 4 and R 6 together form a C 2 -C 6 alkylene bridge that is unsubstituted or substituted with one or more C 1 -C 4 alkyl; R 11 is hydrogen or C 1 -C 6 is alkyl; R 12 and R 13, independently of each other, for example, hydrogen, phenyl, C 1 -C 18 alkyl, C 1 -C 18 alkyl which is interrupted by one or more O ; n is located at 1 to 10; X is, O, S or NR 10; A及A 1 is a suitable coupling group, compounds of formula (I), (II) and (III), are suitable as photolatent base. |