New .alpha.-aminoacetophenone photoinitiators

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

C - Chemistry, Metallurgy

07

D

C07D 295/108 (2006.01) C07C 323/12 (2006.01) C07C 323/25 (2006.01) C07C 323/32 (2006.01) C07D 211/20 (2006.01) C07F 7/10 (2006.01) C07F 9/165 (2006.01) C08F 2/50 (2006.01) C08F 4/00 (2006.01) C09D 7/12 (2006.01) C09D 11/02 (2006.01) G03F 7/031 (2006.01)

Patent

CA 2223376

Compounds of the formulae I, II, III and IV (see fig. I) (see fig. II) (see fig. III) (see fig. IV) wherein Ar for example is a phenyl, biphenyl or benzoylphenyl group, which is unsubstituted or substituted; Ar1, for example, has the same meanings as Ar; Ar2 is inter alia phenyl; X may be a direct bond; Y hydrogen, etc.; R1 and R2 for example C1-C8alkyl; R3 inter alia hydrogen or C1-C12alkyl; R4 is inter alia C1-C12alkyl; or R3 and R4 together are C3-C7alkylene; R5 is for example C1-C6alkylene; and Z is a divalent radical; provided that at least one of the radicals Ar, Ar1, Ar2, Ar3, R1, R2, R3, R4, R5 or Y is substituted by 1 to 5 SH groups, or provided that Y contains at least one -SS- group, are photoinitaitors for the polymerisation of ethylenically unsaturated compounds.

Composés de formules I, II, III et IV (voir fig. I) (voir fig. II) (voir fig. III) (voir fig. IV) où Ar par exemple est un groupe phényle, biphényle ou benzoylphényle, substitué ou non; Ar1, par exemple, a la même signification que Ar; Ar2 est, entre autres choses, un phényle; X peut être une liaison directe; Y est un hydrogène, etc.; R1 et R2 sont, par exemple, un alkyle en C1-C8; R3 est, entre autres choses, un hydrogène ou un alkyle en C1-C12; R4 est, entre autres choses, un alkyle en C1-C12; ou R3 et R4 sont, ensemble, un alkylène en C3-C7; R5 est, par exemple, un alkylène en C1-C6; et Z est un radical divalent; pourvu qu'au moins un des radicaux Ar, Ar1, Ar2, Ar3, R1, R2, R3, R4, R5 ou Y soit substitué par 1 à 5 groupes SH, ou pourvu que Y contienne au moins un groupe -SS-; il s'agit de photoinitiateurs pour la polymérisation de composés à insaturation éthylénique.

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