Patent · US Expired

Production of phosphine

US4091078A · kind A · utility

1Cited by

5References

7Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Klaus Hestermann · Lechenich, DE
Jurgen Stengel
Gero Heymer · Lechenich, DE
Christian May · Garching an der Alz, DE

Key dates

Filing date	Oct 28, 1976
Grant date	May 23, 1978
Priority date	—
Expiry date	Oct 28, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01B25/06
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Phosphine is produced from elementary yellow phosphorus and an aqueous alkali metal hydroxide solution in the presence of an alcohol. The phosphine is more particularly made by using an alcohol having from 5 to 10 carbon atoms and a dissolving power for yellow phosphorus of more than 5 g/l; suspending the phosphorus with agitation in the said alcohol in a reaction zone; reacting the resulting suspension with the alkali metal hydroxide solution at temperatures lower than the boiling point of the alcohol; and collecting the resulting issuing gaseous phosphine.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.