.alpha.-aminoacetophenone photoinitiators

Details .alpha.-aminoacetophenone photoinitiators .alpha.-aminoacetophenone photoinitiators

1997-12-01

2000-02-08

Berman, Susan W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 15, 522 16, 522 17, 522 18, 522 33, 522 34, 522 36, 522 39, 522 75, 522 81, 523160, 427510, 427511, 4302811, 4302861, 430269, 564342, 564340, C08F 250, C07C22100, C07D26532, G03C 1175

Patent

active

060229063

ABSTRACT:
Compounds of the formulae I, II, III and IV ##STR1## wherein Ar for example is a phenyl, biphenyl or benzoylphenyl group, which is unsubstituted or substituted; Ar.sub.1, for example, has the same meanings as Ar; Ar.sub.2 is inter alia phenyl; X may be a direct bond; Y hydrogen, etc.; R.sub.1 and R.sub.2 for example C.sub.1 -C.sub.8 alkyl; R.sub.3 inter alia hydrogen or C.sub.1 -C.sub.12 alkyl; R.sub.4 is inter alia C.sub.1 -C.sub.12 alkyl; or R.sub.3 and R.sub.4 together are C.sub.3 -C.sub.7 alkylene; R.sub.5 is for example C.sub.1 -C.sub.6 alkylene; and Z is a divalent radical; provided that at least one of the radicals Ar, Ar.sub.1, Ar.sub.2, Ar.sub.3, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 or Y is substituted by 1 to 5 SH groups, or provided that Y contains at least one --SS-- group, are photoinitiators for the polymerization of ethylenically unsaturated compounds.

REFERENCES:
patent: 4307182 (1981-12-01), Dalzell et al.
patent: 4582862 (1986-04-01), Berner et al.
patent: 4992547 (1991-02-01), Berner et al.
patent: 5077402 (1991-12-01), Desobry et al.
patent: 5124235 (1992-06-01), Fukui et al.
patent: 5541038 (1996-07-01), Ohta et al.
patent: 5698285 (1997-12-01), Kojima

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