Removal of bis-chloromethyl ether from chloroacetyl chloride
AssigneeThe Dow Chemical Company
InventorYog R. Dhingra
Life of this patent
Estimating the term…
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.
Claims10
A process of removing bis-chloromethyl ether from a mixture comprising chloroacetyl chloride and bis-chloromethyl ether, the process comprising contacting the mixture with hydrochloric acid at a temperature between about 30.degree. C and about 160.degree. C, inclusive, in the presence of a catalytic amount of a Lewis acid or a strong protic acid.
Dependencies are inferred from the claim text.