Patent · US Expired

Purification of crude monochloromethane gas

US4192821A · kind A · utility

1Cited by

0References

4Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Reinhold Graser · Frankfurt am Main, DE
Wilhelm Lendle · Bad Soden am Taunus, DE
Hendrik W. Post · Hofheim, DE

Key dates

Filing date	Dec 20, 1977
Grant date	Mar 11, 1980
Priority date	—
Expiry date	Dec 20, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C17/395
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Crude monochloromethane is freed from dimethylether by a washing with aqueous hydrochloric acid.

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