The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 1998
Filed:
Feb. 14, 1996
David George Leppard, Marly, CH;
Manfred Kohler, Freiburg, DE;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
A photopolymerizable composition comprising (a) at least one ethylenically unsaturated photopolymerizable compound, and (b) alkoxyphenyl-substituted bisacylphosphine oxides of the formula I ##STR1## in which R.sub.1 and R.sub.2 are identical or different and are a radical of the formula II ##STR2## in which R.sub.4 and R.sub.5 independently of one another are C.sub.1 -C.sub.12 alkyl or C.sub.1 -C.sub.12 alkoxy, and R.sub.6, R.sub.7 and R.sub.8 independently of one another are hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy or halogen, R.sub.3 is a radical of the formula III ##STR3## in which R.sub.9 is C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkyl, C.sub.5 -C.sub.6 cycloalkyl, phenyl, naphthyl, phenyl-C.sub.1 -C.sub.5 alkyl, C.sub.2 -C.sub.12 alkenyl, --CF.sub.3 or ##STR4## or R.sub.9 is a radical of the formula IV or V ##STR5## in which X is for example C.sub.1 -C.sub.16 alkylene, C.sub.4 -C.sub.12 alkenylene or is xylylene, R.sub.10 is for example hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.12 alkenyl, cyclopentyl, cyclohexyl, phenyl with 1 or 2 C.sub.1 -C.sub.4 alkyl and/or C.sub.1 -C.sub.4 alkoxy groups, or is C.sub.1 -C.sub.4 alkoxy, R.sub.11 is hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.12 alkenyl, cyclopentyl, cyclohexyl, phenyl, or is C.sub.1 -C.sub.4 alkoxy, or is a radical of the formula VI ##STR6## or R.sub.9 and R.sub.11, in the formula III together are ethylene, --CH.sub.2 CR.sub.14 R.sub.15 -- or --C(CH.sub.3).sub.2 CH.dbd.CH--, or R.sub.10 and R.sub.11, together with the atoms to which they are attached, for example form a benzene ring, R.sub.12 is hydrogen or C.sub.1 -C.sub.4 alkoxy, R.sub.13 is C.sub.1 -C.sub.4 alkyl, R.sub.14 and R.sub.15 independently of one another are hydrogen, C.sub.1 -C.sub.8 alkyl, phenyl or --CH.sub.2 OR.sub.13, or R.sub.14 and R.sub.15, together with the carbon atom to which they attached, form a C.sub.5 -C.sub.6 cycloalkyl ring, Y is for example a single bond, --CR,.sub.6 R.sub.17 -- or --CH.dbd.CH--, R.sub.16 is hydrogen, methyl or ethyl, R.sub.17 is hydrogen or C.sub.1 -C.sub.4 alkyl, R.sub.18 is hydrogen, C.sub.1 -C.sub.12 alkyl or phenyl, and m is a number from 2-12, with the proviso that if the radical --OR.sub.9 in the formula III is in the p-position of the phenyl ring and R.sub.9 is methyl, at least one of the radicals R.sub.10, R.sub.11 and R.sub.12 is not hydrogen, are suitable for the photopolymerization of compounds containing ethylenically unsaturated bonds.