Patent · US Expired

Process for preparing acetic acid

US4094901A · kind A · utility

1Cited by

3References

5Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Helmut Schaum · Bad Soden am Taunus, DE
Friedrich Schenk · Aachen, DE
Hartmut Voigt · Frankfurt am Main, DE
Rudolf Sartorius

Key dates

Filing date	Mar 29, 1976
Grant date	Jun 13, 1978
Priority date	—
Expiry date	Mar 29, 1996

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/584
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Process for preparing acetic acid by oxidation of acetaldehyde with oxygen or oxygen containing gases in the presence of a catalyst based on manganese acetate, wherein the crude acetic acid and the gases formed, still containing acetaldehyde, are submitted to an after-oxidation, the low-boiling substances are distilled off and the residue is reused as catalyst.

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