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:
Aug. 16, 1988
Filed:
Jun. 29, 1987
Applicant:
Inventors:
Martin Decker, Ludwigshafen, DE;
Franz Neumayr, Weisenheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2605 / ;
Abstract
Chlorocarboxylic acid chlorides of the formula ##STR1## where R is H or alkyl and n is an integer from 2 to 4, are prepared by reacting a lactone of the formula ##STR2## with phosgene at elevated temperatures and in the presence of a quaternary ammonium salt.