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:
Jan. 20, 1981
Filed:
Jan. 10, 1979
Applicant:
Inventors:
Assignee:
Lonza Ltd., Gampel, Valais, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; B01D / ;
U.S. Cl.
CPC ...
203 70 ; 203 78 ; 203 91 ; 2605 / ;
Abstract
Process for the separation of a mixture of chloroacetyl chloride and dichloroacetyl chloride by extractive distillation. The mixture of chloroacetyl chloride and dichloroacetyl chloride is treated with n-dodecane, which is a saturated aliphatic hydrocarbon extraction agent. Lower levels of dichloroacetyl chloride contaminant are achieved than by prior art processes.