Patent · US Expired

Preparation of glyoxal

US4503261A · kind A · utility

8Cited by

5References

6Claims

0Family size

Assignee

BASF SE

Inventors

Wolfgang Sauer · Everberg, BE
Klaus Halbritter · Heidelberg, DE
Heinz Engelbach

Key dates

Filing date	Jul 22, 1982
Grant date	Mar 5, 1985
Priority date	—
Expiry date	Jul 22, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C45/38
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the continuous preparation of glyoxal by oxidation of ethylene glycol, in which the ethylene glycol, oxygen and an inert gas are passed, at from 450.degree. to 800.degree. C., over a catalyst consisting of one or more layers of copper crystals and one or more layers of silver crystals, the copper and silver crystals having a particle size of from 0.1 to 2.5 mm.

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