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. 05, 2000
Filed:
May. 26, 1998
Alessandro Zedda, Casalecchio di Reno, IT;
Gianluca Ferri, Anzola Emilia, IT;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
A compound of the formula (I) ##STR1## wherein n is an integer from 1 to 4; the radicals R.sub.1 are for example a group of the formula ##STR2## R.sub.3 is for example hydrogen, C.sub.1 -C.sub.8 alkyl or C.sub.5 -C.sub.12 cycloalkoxy; Z and R.sub.2 are for example a group ##STR3## the radicals A and E are, for example, independently of one another --N(R.sub.11)(R.sub.12) or a group of the formula ##STR4## R.sub.11 and R.sub.12 are for example C.sub.1 -C.sub.12 alkyl; R.sub.13 has for example one of the meanings given for R.sub.3 ; E* has for example one of the meanings given for A or is a group of the formula ##STR5## The compounds of the formula (I) are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers such as polyolefins.