申请人:Sericol Group Limited
公开号:US04459416A1
公开(公告)日:1984-07-10
The invention provides novel thioxanthone photoinitiators having the formula: ##STR1## wherein R.sub.1 alkyl, alkoxy, alkylthio, halogeno, nitro, amino, alkyl-amino, di-alkyl-amino, hydroxy alkyl-amino, alkanoylamino, benzoylamino, N-alkanoyl-N-benzoyl-amino, sulphonamido, or acetyl, R.sub.2 is alkylene, A is --COOH, --SO.sub.3 H, --OSO.sub.3 H, or --O--CO--X--COOH (where X is such that HO--CO--X--COOH is a di- or tri-carboxylic acid of up to 8 carbon atoms), n is 0, 1, or 2 and m is 1 or 2, provided that when A is --COOH, m is 2, the aforesaid alkyl, alkoxy, alkanoyl, and alkylene residues containing up to 4 carbon atoms each, as the free acid or as a salt thereof. The photoinitiators may advantageously be used in water-based photopolymerizable compositions, e.g. for use in screen stencil production.
该发明提供了具有以下结构的新型硫氧化苯酮光引发剂:
其中R1是烷基、烷氧基、烷硫基、卤素、硝基、氨基、烷基氨基、二烷基氨基、羟基烷基氨基、烷酰胺基、苯甲酰胺基、N-烷酰基-N-苯甲酰胺基、磺酰胺基或乙酰基;R2是烷基;A是--COOH、--SO3H、--OSO3H或--O--CO--X--COOH(其中X是使得HO--CO--X--COOH成为具有最多8个碳原子的二元或三元羧酸),n为0、1或2,m为1或2,但当A为--COOH时,m为2;上述的烷基、烷氧基、烷酰基和烷基烯基残基中每个含有最多4个碳原子,作为自由酸或其盐。这些光引发剂可优选用于水性光聚合物组合物中,例如用于丝网模板生产。