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:
Apr. 11, 2000
Filed:
Jan. 28, 1998
David George Leppard, Marly, CH;
Manfred Kohler, Freiburg, DE;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
Compounds of the formula I ##STR1## in which R.sub.1 and R.sub.2 independently of one another are, for example, a group of the formula II ##STR2## R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 independently of one another are, for example, hydrogen, C.sub.1 -C.sub.12 alkyl, OR.sub.8, SR.sub.9, NR.sub.10 R.sub.11, halogen or phenyl; R.sub.8, R.sub.9, R.sub.10, R.sub.11 independently of one another are, for example, hydrogen or C.sub.1 -C.sub.12 alkyl; R.sub.12 is, for example, C.sub.1 -C.sub.8 alkyl; R.sub.13 is, for example, C.sub.1 -C.sub.12 alkyl; R.sub.14 is, for example, hydrogen; Y is C.sub.1 -C.sub.12 alkylene, C.sub.4 -C.sub.8 alkenylene, C.sub.4 -C.sub.8 alkynylene or cyclohexylene, or is phenylene or C.sub.4 -C.sub.40 alkylene interrupted one or more times by --O--, --S-- or --NR.sub.15 --, or Y is a group of the formula III, IV, V, VI, VII, VIII, IX, X or XI ##STR3## Y.sub.1 is as defined for Y with the exception of the formula V; R.sub.15 is hydrogen, C.sub.1 -C.sub.12 alkyl or phenyl; and R.sub.16 is hydrogen, CH.sub.2 OH or C.sub.1 -C.sub.4 alkyl; and mixtures of these compounds with further photoinitiators are suitable for photopolymerizing compounds having ethylenically unsaturated double bonds.