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:
Dec. 03, 2019
Filed:
Jul. 30, 2015
Friedrich Georg Schmidt, Haltern am See, DE;
Stefan Hilf, Singapore, SG;
Florian Hermes, Frankfurt, DE;
Dorothea Staschik, Nidderau, DE;
Thomas Eurich, Hanau, DE;
Rebecca Pieroth, Ronneburg, DE;
Friedrich Georg Schmidt, Haltern am See, DE;
Stefan Hilf, Singapore, SG;
Florian Hermes, Frankfurt, DE;
Dorothea Staschik, Nidderau, DE;
Thomas Eurich, Hanau, DE;
Rebecca Pieroth, Ronneburg, DE;
EVONIK DEGUSSA GmbH, Essen, DE;
Abstract
The invention concerns specifically emulsion polymers which are intraparticulately crosslinked via a hetero-Diels-Alder (HDA) mechanism. The crosslinked polymers can then be wholly or partly decrosslinked by thermal processing, for example in the form of a composite matrix, via a retro-Diels-Alder or retro-hetero-Diels-Alder reaction and interparticulately recrosslinked on cooling. This makes it possible to prepare long shelf life prepregs for composites. But it is also possible to thus realize other materials that have thermoset properties at use temperature but thermoplastic processing properties at a higher temperature.