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. 26, 2021
Filed:
Aug. 31, 2017
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Assignee:
Evonik Operations GmbH, Essen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/02 (2006.01); C08F 220/14 (2006.01); C08J 9/04 (2006.01); C08F 2/02 (2006.01); C08J 3/24 (2006.01); C08J 9/10 (2006.01);
U.S. Cl.
CPC ...
C08F 220/14 (2013.01); C08F 2/02 (2013.01); C08J 3/24 (2013.01); C08J 9/02 (2013.01); C08J 9/04 (2013.01); C08J 9/102 (2013.01); C08F 2800/20 (2013.01); C08F 2810/50 (2013.01); C08J 2201/026 (2013.01); C08J 2201/032 (2013.01); C08J 2203/04 (2013.01); C08J 2205/10 (2013.01); C08J 2333/12 (2013.01);
Abstract
The present invention relates to novel PMMA foams and the production thereof. Here, polymers which have been obtained by copolymerization of methacrylamides such as N-isopropylmethacrylamide and without styrene are foamed. It has surprisingly been possible to establish that a stable, simple-to-produce PMMA foam which has very good properties, e.g. a very high compressive strength, and can be joined more simply to covering layers, especially in comparison with known PMMA foams, can be obtained according to the invention.