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:
Nov. 11, 1997
Filed:
Dec. 31, 1991
Applicant:
Inventors:
Eric Vieira, Fribourg, CH;
Hugh Stephen Laver, Fribourg, CH;
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07F / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
549434 ; 564158 ; 564162 ; 564163 ; 564165 ; 564167 ; 564168 ; 564169 ; 564175 ; 564 15 ; 564154 ; 564155 ; 564156 ; 549437 ; 549438 ; 549440 ; 549445 ; 549447 ; 558155 ; 558158 ; 558159 ; 558160 ; 558166 ; 558169 ; 558170 ; 558172 ; 558174 ; 558177 ; 558178 ; 558179 ; 558180 ; 558182 ; 560-8 ; 560 11 ; 560 12 ; 560 13 ; 560 14 ; 560 15 ; 560 16 ; 560 26 ; 560 29 ; 560 53 ; 560 61 ; 560 62 ; 560 63 ; 560 64 ; 560 65 ; 560 73 ; 560 75 ; 560 83 ; 560 85 ; 560 89 ; 560 95 ;
Abstract
Inks, particularly inks for ink jet printing, contain at least one compound of the formula I ##STR1## as a stabilizer. The symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.3 ' and R.sub.4 ' are as defined in claim 1. The compounds are in part novel and are suitable for use as light stabilizers for organic materials.