Basf Aktiengesellschaft

Rudolf Schnur

Herwig Hoffmann

Siegfried Winderl

Wolfgang Reiss

Peter Zehner

Juergen Dehler

Hans-Ingo Joschek

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.

Manufacture of butynediol

Process for the manufacture of butynediol-1,4 from acetylene and formaldehyde in aqueous solution in contact with a copper acetylide catalyst in the absence of a gas phase.

Process for the manufacture of butynediol

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Frankenthal, Germany

Rudolf Schnur