| abstract |
The present invention relates to compounds of general formula I, IIa, IIb, III and IV and methods for their manufacture, wherein Ar 1 is a substituted ortho-arylene group, ortho-heteroarylene group; Ar 2 is a di-ortho-arylene group connected in various ways base, di-o-heteroarylene; Y 1 is O, S, NR 20 , BR 20 , CR 15 R 16 , SiR 15 R 16 , S=O, C=O; Z 1 is a direct bond, C 1 -C 10 Alkylene group, arylene group; R 1 , R 15 , R 16 , R 20 , are each hydrogen atom, alkyl or alkoxy group, alkyl or alkoxy group substituted by any group, cycloalkyl group , aryl, acyl substituted by any group; the present invention also relates to a photocurable composition using compounds of general formula I, IIa, IIb, III and IV as photoinitiators, the composition is used to prepare photoresist devices such as display When the screen uses a color filter, it shows a very good overall performance. |