Patent · US Expired

Process permitting the deposition of solid matter in mixtures containing methyldichlorophosphane to be inhibited

US4261923A · kind A · utility

0Cited by

4References

3Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Alexander Ohorodnik · Lechenich, DE
Klaus Gehrmann · Lechenich, DE
Eberhard Auer · Lechenich, DE
Stefan Schafer · Aachen, DE

Key dates

Filing date	Jan 7, 1980
Grant date	Apr 14, 1981
Priority date	—
Expiry date	Jan 7, 2000

Classification

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

Abstract

The invention relates to a process permitting the deposition of solid matter in mixtures containing methyldichlorophosphane to be avoided. To this end, the mixture is stabilized by admixing it with phosphoric acid or a soluble compound containing at least one acid group selected from phosphoric acid, phosphonic acid, sulfonic acid, phosphonous acid, thiophosphoric acid or dithiophosphoric acid.

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