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:
May. 15, 1979
Filed:
Jun. 20, 1977
Applicant:
Inventors:
Roger Malherbe, Muttenz, CH;
Michael Rasberger, Riehen, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07D / ; C08K / ; C08K / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260141 ; 260156 ; 2602 / ; 546190 ;
Abstract
Polyalkylpiperidinyl esters of diazocarboxylic acids are prepared, which compounds protect organic polymers against UV light degradation. The light stabilizers have the ability to react with the organic polymeric substrates thus making the piperidinyl esters migration and extraction resistant. Polymers which may be stabilized with the compounds of this invention include polypropylene, polyethylene, polystyrene and polyamides.