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:
Nov. 15, 1983
Filed:
Jul. 02, 1982
Applicant:
Inventors:
Assignee:
Sandoz Ltd., Basel, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
524102 ; 524101 ; 524103 ; 546234 ; 546236 ; 546237 ; 546239 ; 544219 ;
Abstract
1,3-dihydroxy-4,6-bis-4'-(2',2',6',6',-tetramethylpiperidyl) benzene, its 1'-alkyl or 1'-(substituted alkyl) derivatives and monomeric or polymeric products derived from these compounds by substitution of 1- and 3-hydroxy groups and/or by the linking of hydroxy groups on adjacent units through a bridging groups, are useful as light and heat stabilizers for polymeric organic materials. Corresponding bis(3',4'-dehydro) unsaturated compounds are useful as intermediates.