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:
Aug. 25, 1992
Filed:
Sep. 07, 1990
Applicant:
Inventors:
Kurt Burdeska, Basel, CH;
Gerhard Reinert, Allschwil, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548260 ;
Abstract
Monosulfonated 2-(2'-hydroxyphenyl)-benzotriazoles of the formula ##STR1## in which R.sub.1 is hydrogen or chlorine and one of R.sub.2 and R.sub.3 is chlorine or lower alkyl and the other is a radical of the formula ##STR2## in which R.sub.4 and R.sub.5 independently of one another are hydrogen or methyl and M is hydrogen, an alkali metal or ammonium. The compounds of the formula (1) are used as UV absorbers for polyamide fibres, wool and mixtures thereof.