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:
Jan. 14, 2003
Filed:
Jun. 12, 2002
Applicant:
Inventors:
Hideki Omori, Ichihara, JP;
Goro Sawada, Ichihara, JP;
Hideo Fukuda, Ichihara, JP;
Kazuhiro Imanishi, Ichihara, JP;
Tomohiko Sato, Ichihara, JP;
Assignee:
Maruzen Petrochemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 3/334 ;
U.S. Cl.
CPC ...
C07C 3/334 ;
Abstract
The present invention provides a process for producing an acetylenediol continuously by reacting a ketone with acetylene in the presence of an alkali catalyst, which process comprises continuously feeding, into a first-stage reactor, a reaction solvent, an alkali catalyst, a ketone and acetylene to give rise to a reaction, continuously introducing the reaction mixture into a second-stage reactor, and continuously feeding a fresh portion of the same ketone into the second-stage reactor to give rise to a reaction.