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. 13, 1977
Filed:
Jul. 15, 1976
Applicant:
Inventors:
Yasuo Tanabe, Kurashiki, JA;
Jun Toriya, Kurashiki, JA;
Masato Sato, Kurashiki, JA;
Ken Shiraga, Kurashiki, JA;
Assignee:
Mitsubishi Chemical Industries Limited, Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2606 / ; 2606 / ;
Abstract
Butanediol and/or butenediol are prepared by hydrolyzing diacetoxybutane and/or diacetoxybutene in the presence of a cation-exchange resin and recovered by fractional distillation. By the treatment of the hydrolyzed product with an anion exchange resin at any stage before the butanediol and/or butenediol are fractionated, butanediol and/or butenediol are recovered in high yield.