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:
Mar. 23, 2021
Filed:
Mar. 21, 2016
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Thomas Richter, Darmstadt, DE;
Christoph Seipel, Babenhausen, DE;
Kay Bernhard, Darmstadt, DE;
Sivakumara K Krishnamoorthy, Pfungstadt, DE;
Sebastian Buehler, Freiburg, DE;
Assignee:
Evonik Operations GmbH, Essen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/38 (2006.01); C08F 220/14 (2006.01); C08J 9/00 (2006.01); C08J 9/14 (2006.01); C08J 9/02 (2006.01); C08J 9/06 (2006.01); C08F 20/14 (2006.01); C08F 2/44 (2006.01); C08J 9/228 (2006.01); C08L 33/12 (2006.01); C08F 222/10 (2006.01);
U.S. Cl.
CPC ...
C08F 2/38 (2013.01); C08F 2/44 (2013.01); C08F 20/14 (2013.01); C08F 220/14 (2013.01); C08J 9/02 (2013.01); C08J 9/06 (2013.01); C08J 9/142 (2013.01); C08J 9/228 (2013.01); C08L 33/12 (2013.01); C08F 222/102 (2020.02); C08J 2201/026 (2013.01); C08J 2203/12 (2013.01); C08J 2205/046 (2013.01); C08J 2205/10 (2013.01); C08J 2207/00 (2013.01); C08J 2333/12 (2013.01);
Abstract
The present invention relates to novel types of PMMA foams and also to the production thereof. The recipes used in the production process include particularly crosslinkers and chain transfer agents as recipe constituents, mostly in low concentrations, in addition to suitable blowing agents. It was found that, surprisingly, the invention provides a simple-to-produce stable PMMA foam having very good properties.