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:
Oct. 29, 1985
Filed:
Sep. 27, 1982
Applicant:
Inventor:
Ludwig Hosch, Michelstadt, DE;
Assignee:
Rohm GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08L / ;
U.S. Cl.
CPC ...
524718 ; 524 99 ; 526204 ; 5263297 ;
Abstract
A method for making a methyl methacrylate polymer having high resistance to ultraviolet radiation and thermal damage by polymerizing methyl methacrylate or a monomer mixture predominantly comprising methyl methacrylate in the presence of a highly sterically hindered amine such as 2,2,6,6-tetramethyl piperidine.