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:
Jan. 28, 1997
Filed:
Nov. 09, 1995
Applicant:
Inventors:
Jean-Luc Birbaum, Kobe, JP;
Gerhard Rytz, Bern, CH;
Vien Van Toan, Lentigny, CH;
Andreas Valet, Binzen, DE;
Norbert W urms, Ursen, CH;
Assignee:
Ciba-Geigy Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C07D / ; C07D / ; C07D / ; C07D / ; G03C / ;
U.S. Cl.
CPC ...
524100 ; 430507 ; 430512 ; 430931 ; 544212 ; 544213 ; 544214 ; 544215 ; 544243 ; 544335 ;
Abstract
The invention relates to compounds of the formula I ##STR1## in which n is 1 or 2, A is CH or a nitrogen atom, and the other radicals R.sup.1 to R.sup.25 are as defined in claim 1. The compounds of the formula I can advantageously be employed for stabilizing organic material against the harmful effect of light, oxygen and/or heat.