Patent · US Expired

Production of acetyl chloride

US4352761A · kind A · utility

0Cited by

3References

5Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Heinz Erpenbach · Cologne, DE
Klaus Gehrmann · Lechenich, DE
Winfried Lork · Lechenich, DE
Peter Pring · Hürth, DE

Key dates

Filing date	Apr 22, 1981
Grant date	Oct 5, 1982
Priority date	—
Expiry date	Apr 22, 2001

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for making acetyl chloride by reacting methoxy chloride with carbon monoxide under practically anhydrous conditions, at temperatures of 350.degree. to 575.degree. K, under pressures of 1 to 300 bars, and in the presence of a catalyst system containing at least one of the noble metals selected from rhodium, palladium, iridium or their compounds, iodine and/or its compounds and optionally trialkylphosphine oxide or triarylphosphine oxide, as well as an inert organic solvent. The invention provides more specifically for the reaction to be effected in the presence of a catalyst system containing n-heptane as the inert solvent and as additional ingredients methyltrialkyl phosphonium iodide and/or methyltriarylphosphonium iodide and at least one compound of chromium, molybdenum or tungsten.

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