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. 10, 1990
Filed:
Nov. 05, 1987
Applicant:
Inventor:
Lajos Avar, Biel-Benken, CH;
Assignee:
Sandoz Ltd., Basel, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C07D / ;
U.S. Cl.
CPC ...
524 99 ; 524102 ; 524103 ; 546186 ; 546187 ; 546188 ; 546190 ; 546 18 ; 546226 ; 546224 ; 546227 ; 252403 ;
Abstract
Compounds are provided which are useful as light stabilizers for polymeric materials and which have the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.4 are organic radicals, R.sub.3 and R.sub.15 are hydrogen or organic radicals and R is hydrogen, oxygen or an organic radical.