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:
Aug. 28, 1990
Filed:
Jun. 15, 1988
Applicant:
Inventors:
Srinivasan Sridhar, Marl, DE;
Helmut Westernacher, Haltern, DE;
Assignee:
Huels Aktiengesellschaft, Marl, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2041801 ; 568855 ; 568856 ;
Abstract
A method of manufacturing 2,4-hexadiyne-1,6-diol by the oxidative coupling of propargyl alcohol, in the presence of an aliphatic C.sub.4 alcohol solvent is disclosed. The 2,4-hexadiyne-1,6-diol is completely dissolved in the butanol. Residual salts dissolved in the butanol solution at the end of the reaction are separated out by electrodialysis. The salt-containing stream which is separated out and contains the catalyst salts, water, and butanol is suitable as a reaction mixture, and can be recycled to the reactor.