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. 18, 1980
Filed:
Sep. 07, 1979
Applicant:
Inventors:
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08G / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 525398 ; 528266 ; 546184 ; 546188 ; 546190 ;
Abstract
By reacting polyalkyl-piperidones-4 with the 0.5- to 1.1-molar amount of formaldehyde in the presence of an aliphatic monoalcohol at 50.degree. to 180.degree. C., polymers of a polymerization degree of from 2 to about 200 are obtained, which may be hydrogenated or partially hydrogenated. Especially in this form, they are suitable as light stabilizers for synthetic polymers and as intermediate products for the preparation of other stabilizers for plastic materials.
Wiezer, Hartmut. (1980). Novel polyalkyl-piperidine polymers, their preparation and use (U.S. Patent No. 4234471). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4234471
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile