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:
Jan. 23, 2001
Filed:
Nov. 18, 1999
James Peter Galbo, Wingdale, NY (US);
Dario Lazzari, Casalecchio di Reno, IT;
Fabrizio Guizzardi, Bologna, IT;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
Compounds of formula (I), wherein n is a number from 2 to 14; R,is for example C,-C,alkyl or C,-C,cycloalkyl; R,is for example C,-C,alkylene; A is for example acetyl, (C,-C,alkoxy)carbonyl, (C,-C,alkyl)aminocarbonyl or C,-C,alkyl; B is —OR,, —N(R,(R,) or a group of formula (II); R,, R,and R,, which are identical or different, are for example hydrogen or C,-C,alkyl, or —N(R,)(R,) is additionally a group of formula (III) with Y being —O—, —CH,—, —CH,CH,— or >N—CH,; X is —O— or >N—R,; R,is for example hydrogen or C,-C,alkyl; and R is preferably a group of formula (IV); with the proviso that in the individual recurrent units of formula (I), each of the radicals B, R, R,and R,has the same or a different meaning. The indicated compounds are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers.