Patent · US Expired

Process for the isolation of monochloroacetaldehyde

US4311563A · kind A · utility

6Cited by

2References

3Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Werner Opavsky
Josef Reisner · Cologne, DE
Alois Maier · Waldkraiburg, DE

Key dates

Filing date	Mar 31, 1981
Grant date	Jan 19, 1982
Priority date	—
Expiry date	Mar 31, 2001

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C45/82
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for the isolation of chloroacetaldehyde which is obtained as a by-product during the synthesis of acetaldehyde from ethylene and air in an aqueous palladium/cupric chloride solution by the 2-stage process. The mixture to be worked-up to chloroacetaldehyde is taken from the acetaldehyde distillation column and transferred to a distillation and extraction system, where it is fractionally condensed. The chloroacetaldehyde-containing fraction is extracted with water and the aqueous extract is subjected to purification distillation.

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