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. 01, 2015
Filed:
Dec. 09, 2009
Applicants:
Christoph Plachetta, Limburgerhof, DE;
Achim Gerstlauer, Limburgerhof, DE;
Reinhard Lang, Neustadt, DE;
Thomas Sauer, Dirmstein, DE;
Jens Becker, Eisenberg, DE;
Inventors:
Christoph Plachetta, Limburgerhof, DE;
Achim Gerstlauer, Limburgerhof, DE;
Reinhard Lang, Neustadt, DE;
Thomas Sauer, Dirmstein, DE;
Jens Becker, Eisenberg, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 69/36 (2006.01); C08L 77/00 (2006.01); C08G 69/28 (2006.01); C08G 69/08 (2006.01);
U.S. Cl.
CPC ...
C08G 69/36 (2013.01); C08G 69/28 (2013.01); C08L 77/00 (2013.01); C08G 69/08 (2013.01);
Abstract
A process for continuously preparing copolyamides from lactams and salts of diamines and dicarboxylic acids, in which lactams together with salts of diamines and dicarboxylic acids are passed from the top downward through a vertical polymerization tube at polyamide-forming temperatures, which comprises