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:
Oct. 18, 1977
Filed:
Sep. 30, 1976
Applicant:
Inventor:
Yog R Dhingra, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ;
Abstract
Bis-chloromethyl ether is efficiently removed from chloroacetyl chloride by a process comprising contacting the chloroacetyl chloride containing generally about 100 to about 250 ppm bis-chloromethyl ether with hydrochloric acid at a temperature between about 30.degree. C and about 160.degree. C in the presence of a catalytic amount of a Lewis or strong protic acid, such as aluminum chloride or oleum. After a contact time of about 1 hour, the chloroacetyl chloride contains less than 0.3 ppm bis-chloromethyl ether.