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:
Oct. 13, 1992
Filed:
Mar. 19, 1990
Applicant:
Inventors:
Wolfgang Wehner, Zwingenberg, DE;
Hermann O Wirth, Bensheim, DE;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C07D / ;
U.S. Cl.
CPC ...
524100 ; 524104 ; 524105 ; 544212 ; 548401 ; 548531 ; 548537 ; 548558 ;
Abstract
The compounds of formula I ##STR1## wherein n is 1 or 2, R.sub.1 is C.sub.1 -C.sub.4 alkyl, R.sub.2 and R.sub.3 are, for example, alkanoyl or alkanoyloxy or R.sub.3 may also be, for example, alkanedioyl, are suitable for stabilizing chlorine-containing polymers against thermal and light-induced degradation. Some of the compounds of formula I are novel.