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:
Jun. 28, 1977
Filed:
Aug. 08, 1975
Robert P Arganbright, Seabrook, TX (US);
William G Bowman, Pasadena, TX (US);
Petro-Tex Chemical Corporation, Houston, TX (US);
Abstract
An improved process is disclosed for recovering 1,4-butanediol in high purity from a mixture comprising 1,4-butanediol in admixture with minor amounts of certain impurities which comprises diluting the 1,4-butanediol-containing mixture with water to form an aqueous mixture having from about 5 to about 75 wt. % water and contacting said aqueous mixture in an extraction zone with a hydrocarbon extractant. An aqueous 1,4-butanediol-containing raffinate is obtained as the bottoms product of the extraction zone and is introduced into a distillation zone operated at reduced pressure from which substantially pure 1,4-butanediol is recovered.