Alkylbisacylphosphine oxides
AssigneeCiba-Geigy Corporation
InventorsDavid G. Leppard, Manfred Kohler, Ljubomir Misev
Life of this patent
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Abstract
Compounds of the formula I ##STR1## in which R.sub.1 is C.sub.1 -C.sub.18 alkyl, cyclopentyl or cyclohexyl, and R.sub.2 and R.sub.3, independently of one another, are phenyl which is unsubstituted or monosubstituted to tetrasubstituted by halogen, C.sub.1 -C.sub.4 alkyl and/or C.sub.1 -C.sub.4 alkoxy, with the proviso that R.sub.1 is not decyl if R.sub.2 and R.sub.3 are chlorine-substituted phenyl, are suitable for the photopolymerization of compounds containing ethylenically unsaturated double bonds.
Claims10
A compound of the formula I ##STR13## in which R.sub.1 is C.sub.1 -C.sub.18 alkyl, cyclopentyl or cyclohexyl, and R.sub.2 and R.sub.3, independently of one another, are phenyl which is unsubstituted or carries 1, 2, 3 or 4 substituents selected from the group consisting of, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and mixtures thereof.
Dependencies are inferred from the claim text.