Patent · US Expired

Process for making methyldichlorophosphane

US4518538A · kind A · utility

5Cited by

1References

1Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Klaus Gehrmann · Lechenich, DE
Alexander Ohorodnik · Lechenich, DE
Johannes Rosenthal · Cologne, DE
Stefan Schafer · Aachen, DE

Key dates

Filing date	Nov 16, 1982
Grant date	May 21, 1985
Priority date	—
Expiry date	Nov 16, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F9/52
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The disclosure relates to a process for making methyldichlorophosphane by reacting methane with phosphorus trichloride in the presence of 2 to 7 mol % carbon tetrachloride, based on the phosphorus trichloride used, at temperatures of 500.degree. to 650.degree. C. and over a period of time of 0.1 to 0.9 second. More particularly, the reaction is effected under a pressure of 2 to 10 bars, the proportion of carbon tetrachloride added being reduced at increasing pressure.

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