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:
Jul. 18, 2006
Filed:
Nov. 19, 2002
Applicants:
Roland Ettl, Hassloch, DE;
Manfred Winter, Dittelsheim-Hessloch, DE;
Torsten Freund, Limburgerhof, DE;
Thomas Kessler, Schifferstadt, DE;
Guenther Grimm, Bruessel, BE;
Inventors:
Roland Ettl, Hassloch, DE;
Manfred Winter, Dittelsheim-Hessloch, DE;
Torsten Freund, Limburgerhof, DE;
Thomas Kessler, Schifferstadt, DE;
Guenther Grimm, Bruessel, BE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 45/89 (2006.01);
U.S. Cl.
CPC ...
Abstract
Alkylketene dimers are prepared by reacting acyl chlorides with tertiary amines in a molar ratio of from 1:1 to 1:1.6 at from 65 to 150° C. and with a residence time of from 1 to 30 minutes in the absence of solvents with thorough mixing and isolation of the alkylketene dimers.