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:
Feb. 16, 2021
Filed:
Oct. 17, 2016
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Arnim Kraatz, Darmstadt, DE;
Denis Holleyn, Hofheim am Taunus, DE;
Assignee:
Evonik Operations GmbH, Essen, DE;
Primary Examiner:
Int. Cl.
CPC ...
B29C 44/14 (2006.01); B29C 44/12 (2006.01); B29C 44/44 (2006.01); B29C 33/48 (2006.01); B29L 31/30 (2006.01); B29C 33/54 (2006.01); B29C 33/38 (2006.01); B29L 31/52 (2006.01); B29K 709/08 (2006.01); B29K 67/00 (2006.01); B29K 75/00 (2006.01); B29K 705/00 (2006.01); B29K 671/00 (2006.01); B29K 23/00 (2006.01); B29L 31/08 (2006.01); B29K 79/00 (2006.01); B29L 31/44 (2006.01); B29K 27/06 (2006.01); B29K 105/04 (2006.01);
U.S. Cl.
CPC ...
B29C 44/14 (2013.01); B29C 33/485 (2013.01); B29C 44/1252 (2013.01); B29C 44/1266 (2013.01); B29C 44/445 (2013.01); B29C 33/3821 (2013.01); B29C 33/54 (2013.01); B29C 44/129 (2013.01); B29C 44/1233 (2013.01); B29C 44/1271 (2013.01); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01); B29K 2027/06 (2013.01); B29K 2067/003 (2013.01); B29K 2075/00 (2013.01); B29K 2079/08 (2013.01); B29K 2105/048 (2013.01); B29K 2671/00 (2013.01); B29K 2705/00 (2013.01); B29K 2709/08 (2013.01); B29K 2995/0063 (2013.01); B29L 2031/085 (2013.01); B29L 2031/30 (2013.01); B29L 2031/44 (2013.01); B29L 2031/52 (2013.01); Y02P 70/50 (2015.11);
Abstract
The invention relates to a process for producing complex, mould-foamed rigid foam materials, more particularly of poly(meth)acrylimide (P(M)I) cores, preferably of polymethacrylimide (PMI) cores, which may be employed, for example, in carmaking or aircraft construction. A feature of the process is that through use of a particulate core during foam, it is possible to achieve an additional weight saving relative to foam materials or sandwich materials of the prior art.