Manufacture of butynediol

Details Manufacture of butynediol Manufacture of butynediol

1976-03-29

1978-01-10

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 2900

Patent

active

040679144

ABSTRACT:
In a process for the manufacture of butynediol by the reaction of formaldehyde and acetylene in aqueous solution, in which a catalyst is used which is produced by the action of acetylene and formaldehyde on copper (II) compounds, the catalyst becomes inactive when it is treated for a relatively long period with formaldehyde at elevated temperature in the absence of acetylene so that it must constantly remain in contact with acetylene-containing solution if its temperature is above 70.degree. C.

REFERENCES:
patent: 3560576 (1971-02-01), Kirchner
patent: 3723545 (1973-03-01), Nagel et al.
patent: 3920759 (1975-11-01), Hort

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