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:
Mar. 23, 1993
Filed:
May. 06, 1992
Applicant:
Inventors:
Jochem Henkelmann, Ludwigshafen, DE;
Irene Troetsch-Schaller, Frankenthal, DE;
Thomas Wettling, Limburgerhof, DE;
Thomas-Michael Kahl, Roemerberg, DE;
Leopold Hupfer, Friedelsheim, DE;
Wolfgang Franzischka, Frankenthal, DE;
Hermann Koehler, Bobenheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568663 ; 570261 ; 570217 ; 568681 ; 568686 ; 536 184 ; 536 185 ; 536122 ;
Abstract
The preparation of an alkyl, alkenyl, or alkynyl chloride by the reaction of a corresponding alcohol with phosgene or thionyl chloride in the presence of a phosphine oxide acting as catalyst, wherein the catalyst used is an aliphatic, cycloaliphatic, or cyclic/aliphatic phosphine oxide.