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:
Dec. 07, 1976
Filed:
Oct. 03, 1974
Joanne D Burger, Lake Jackson, TX (US);
William L Howard, Lake Jackson, TX (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
This invention relates to a chemical process for preparing pentachloro-2-propanone (pentachloroacetone) and dichloroacetic acid from isopropyl ethers which may be partially chlorinated. The pentachloroacetone process is carried out by reacting the isopropyl ethers with chlorine in the presence of water to produce pentachloroacetone which can then be recovered. Alternatively, if dichloroacetic acid is desired, the pentachloroacetone process may be carried further by reacting the pentachloroacetone with a base-acting material to produce a salt of dichloroacetic acid and then reacting this salt with acid to produce dichloroacetic acid of about 95% purity.