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:
Sep. 24, 2013
Filed:
Aug. 18, 2009
Applicants:
Klaus Kirsten, Mainz, DE;
Manfred Albrecht, Bruchkoebel, DE;
Franz Samlitschka, Maintal, DE;
Inventors:
Assignee:
Lurgi Zimmer GmbH, Frankfurt am Main, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 69/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A continuous process is disclosed for the extraction of monomeric caprolactam and its oligomers as the raw polymer product obtained in the polymerization of polyamide-6 in which no fresh water, but processing water or previously used extraction water is used for the granulation.