Alkylphenylbisacylphosphine oxides and photoinitiator mixtures

Details Alkylphenylbisacylphosphine oxides and photoinitiator mixtures Alkylphenylbisacylphosphine oxides and photoinitiator mixtures

C - Chemistry, Metallurgy

07

F

C07F 9/53 (2006.01) C08F 2/50 (2006.01) C09D 4/00 (2006.01) G03F 7/004 (2006.01) G03F 7/029 (2006.01)

Patent

CA 2198803

Compounds of the formula I (see formula I) in which R1 is C1-C4alkyl, R2 is hydrogen, C1-C4alkyl or C1-C4alkoxy and R3, R4, R5, R6 and R7 independently of one another are hydrogen, halogen, C1-C20alkyl, cyclopentyl, cyclohexyl, C2-C12alkenyl, C2-C18alkyl which is interrupted by one or more oxygen atoms, or are phenyl-substituted C1-C4alkyl, or are phenyl which is unsubstituted or is mono- or disubstituted by C1-C4alkyl and/or C1-C1alkoxy, with the provisos that at least one of the radicals R3, R4, R5, R6 and R7 is other than hydrogen and that, if R1 and R2 are methyl, R3 and R6 are not methyl, and mixtures of such compounds with .alpha.-hydroxy ketones, benzophenones and .alpha.-amino ketones, are suitable as photoinitiators.

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