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:
May. 26, 2009
Filed:
Jul. 23, 2004
Applicants:
Rudolf Kämpf, Haingründau, DE;
Reinhard Wolf, Rodenbach, DE;
Joachim Seelig, Biebergemund, DE;
Inventors:
Assignee:
Zimmer Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 11/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for the treatment of waste containing polyamide comprising a) depolymerisation of the waste containing polyamide, whereby a caprolactam raw material () and a flow (), comprising the secondary constituents and additives from the depolymerisation, are obtained, and b) leaching of the flow () at least once using an extracting agent.