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:
Jul. 21, 1992
Filed:
Jan. 07, 1991
Applicant:
Inventors:
Arthur L Baron, Getzville, NY (US);
Terry N Myers, Grand Island, NY (US);
Assignee:
Elf Atochem North America, Inc., Philadelphia, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 49 ; 528 73 ; 521166 ;
Abstract
Stabilized polyurethanes, polyureas and polyurethane-polyurea polymers having hindered amine light stabilizers (HALS) bonded thereto by means of a hydrazide functionality attached to the HALS are provided. The synergistic effect of a second amide functional group in the HALS-hydrazide provides improved photostabilization efficiency as compared to HALS-hydrazides of the prior art.