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:
May. 02, 1978
Filed:
Jun. 18, 1976
Fred A Sherrod, Freeport, TX (US);
William L Howard, Lake Jackson, TX (US);
Joanne D Burger, Lake Jackson, TX (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
A process for recovering monomeric glycols and glycerine from polyoxyalkylene glycols and polyglycerines which comprises heating the polymeric compounds together with a lower saturated mono-carboxylic acid, containing from 2 to 4 carbon atoms such as acetic acid, in the presence of a strong acid, e.g. sulfuric acid, or a strong acid cation exchange resin. The product, which is the diester of the monomeric glycol or the triester of glycerine, is recovered and subsequently hydrolyzed to obtain the desired monoglycol or glycerine product. If it is desired to obtain the ester itself, the latter step of hydrolyzing can be omitted.