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:
Sep. 07, 1982
Filed:
Mar. 17, 1981
Applicant:
Inventors:
Friedrich Karrer, Zofingen, CH;
Paul Moser, Riehen, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546187 ; 546190 ; 546208 ; 546224 ; 544130 ; 524 99 ; 524103 ;
Abstract
Compounds of the formula I ##STR1## in which m is 0 or 1 and n is 1 or 2 and R, R.sup.1, R.sup.2, Z and X are as defined in claim 1, and also salts of these compounds, are valuable light stabilizers for organic materials, especially for polymers. The compounds of the formula I can be prepared from the corresponding 4-sec.-aminopiperidines by reaction with cyclic dicarboxylic acid anhydrides and appropriate further reactions.