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. 06, 1978
Filed:
Mar. 19, 1974
Applicant:
Inventors:
Wolfgang Reiss, Ludwigshafen, DT;
Hans-Ingo Joschek, Mannheim, DT;
Rudolf Schnur, Frankenthal, DT;
Siegfried Winderl, Heidelberg-Wieblingen, DT;
Juergen Dehler, Ludwigshafen, DT;
Herwig Hoffmann, Frankenthal, DT;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen am Rhein, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568855 ;
Abstract
Butynediol is prepared by reacting acetylene and formaldehyde in contact with a heavy metal acetylide as catalyst, in the liquid phase by the Reppe method. Acetylene is fed upwardly through a suspension of the catalyst in formaldehyde at such a rate that it is virtually completely consumed and a liquid zone containing no catalyst is formed above the suspension.