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. 23, 1997
Filed:
Dec. 15, 1995
Rita Pitteloud, Praroman, CH;
Ciba-Geigy Corporation, Tarrytown, NY (US);
Abstract
The invention relates to novel compounds of formula I ##STR1## wherein X is a direct bond, sulfur or --CHR.sub.5 --, R.sub.1 is hydrogen, C.sub.1 -C.sub.25 alkyl, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.8 cycloalkyl; unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.8 cycloalkenyl; unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted phenyl; C.sub.7 -C.sub.9 phenylalkyl or --CH.sub.2 --S--R.sub.6 ; R.sub.2 is hydrogen, C.sub.1 -C.sub.25 alkyl, C.sub.2 -C.sub.24 alkenyl, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.8 cycloalkyl; unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.8 cycloalkenyl; unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted phenyl; C.sub.7 -C.sub.9 -phenylalkyl or --CH.sub.2 S--R.sub.6 ; R.sub.3 is hydrogen or methyl; R.sub.4 is C.sub.1 -C.sub.8 alkyl, O.sup..cndot., OH, NO, --CH.sub.2 CN, C.sub.1 -C.sub.18 alkoxy, C.sub.5 -C.sub.12 cycloalkoxy, C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, C.sub.1 -C.sub.87 acyl, C.sub.7 -C.sub.9 phenylalkyl which is unsubstituted or substituted at the phenyl ring by C.sub.1 -C.sub.4 alkyl; R.sub.5 is hydrogen or C.sub.1 -C.sub.8 alkyl; and R.sub.6 is C.sub.1 -C.sub.20 alkyl, as stabilisers for protecting organic materials against oxidalive, thermal or light-induced degradation.