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:
May. 28, 1985
Filed:
May. 05, 1982
Applicant:
Inventors:
Diveley William R, Wilmington, DE (US);
Anthony B Clayton, Wilmington, DE (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C07D / ;
U.S. Cl.
CPC ...
525279 ; 525285 ; 5253282 ; 525375 ; 524 86 ; 524 99 ; 524102 ; 546187 ; 546192 ; 546208 ;
Abstract
Disclosed is a new class of polymeric hindered amine light stabilizers based on maleic anhydride modified polyolefins reacted with tetramethyl piperidine derivatives. These materials are more effective than most of the generally used hindered amine light stabilizers, but due to their higher molecular weights and the polyolefin backbone, they are more compatible with polyolefins.
Quick Actions:
Diveley William R,. (1985). Polymeric hindered amines (U.S. Patent No. 4520171). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4520171
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile