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:
May. 26, 2009
Filed:
Oct. 08, 2002
Gisèle Baudin, Allschwil, CH;
Kurt Dietliker, Allschwil, CH;
Tunja Jung, Rheinfelden-Herten, DE;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
Compounds of the formula I R7″N—R6 RS—C,N—R4 H C, R'/I R, 3 R 2 (I) in which R, is an aromatic or heteroaromatic radical which is capable of absorbing light in the wave-length range from 200 nm to 650 nm and which is unsubstituted or substituted one or more times by C,—C,8alkyl, C2-C,ealkenyl, C2-C,8alkynyl, C,—C,ehaloalkyl, NO2, NR,OR, CN, OR,2, SR,2, C(O)R,3, C(O)OR,4, halogen or a radical of the formula II R˜—N′ R6 1 R5-C,N.R4 H I C—R3 I R2 (II) and which on absorption brings about a photoelimination which leads to the generation of an amidine group, R2 and R3 independently of one another are hydrogen, C,—C,ealkyl or phenyl which is unsubstituted or is substituted one or more times by C,—C,8alkyl, CN, OR,2, SR,2, halogen or C,—C,ehaloalkyl; R5 is C,—C,ealkyl or NR8R9; R4, R6, R, R8, R9, R,o and R independently of one another are hydrogen or C,—C,8alkyl; or R4 and R6 together form a C2-C,2alkylene bridge which is unsubstituted or is substituted by one or more C1-C4alkyl radicals; or R5 and R, independently of R4 and R6, together form a C2-C,2alkylene bridge which is unsubstituted or is substituted by one or more C1-C4alkyl radicals; or, if R5 is a radical NR8R9, R, and R9 together form a C2-C,2alkylene bridge which is unsubstituted or is substituted by one or more C1-C4alkyl radicals; and R,2, R,3 and R,4 independently of one another are hydrogen or C,—C,ealkyl; are suitable as photoinitiators for compounds which react under base catalysis.