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. 15, 2002
Filed:
May. 11, 2001
Applicant:
Inventors:
Wolfgang Von Gentzkow, Kleinsendelbach, DE;
Dietrich Braun, Darmstadt, DE;
Arnd-Peter Rudolf, Schlüchtern, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 4/22 ;
U.S. Cl.
CPC ...
C07C 4/22 ;
Abstract
A process for the feedstock recycling of thermoset materials treats the material with a partially hydrogenated aromatic hydrocarbon at a temperature of from 200 to 350° C. in the presence of an amine. In the case of epoxy resin materials an amine is not needed if processing is carried out at temperatures of from 300 to 350° C.