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. 03, 1999
Filed:
Dec. 19, 1997
Applicant:
Inventors:
Peter Nesvadba, Marly, CH;
Paul Dubs, Fribourg, CH;
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C07F / ;
U.S. Cl.
CPC ...
524117 ; 524119 ; 558 76 ; 558 82 ;
Abstract
A description is given of novel compounds of formula I ##STR1## wherein R.sup.1, R.sub.2, R.sub.3, and R.sup.4 are hydrogen, alkyl, phenylalkyl, or alkoxy and where R.sub.5 and R.sub.6 are hydrogen or phenyl or together with the linking carbon atoms, are cycloalkenylene or cycloalkenylene which is interrupted by oxygen or sulfur. These compounds are useful as stabilizers for organic materials against oxidative, thermal or light-induced degradation.