Patent · US Expired

Process for the separation of acrylic acid

US6166248A · kind A · utility

7Cited by

3References

8Claims

0Family size

Assignee

BASF SE

Inventors

Bernd Heida · Haßloch, DE
Fritz Thiessen · Ludwigshafen, DE
Ulrich Hammon · Mannheim, DE
Albrecht Dams · Monsheim, DE

Key dates

Filing date	Feb 4, 1999
Grant date	Dec 26, 2000
Priority date	—
Expiry date	Feb 4, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/48
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for isolating acrylic acid forward during catalytic gas phase oxidation of propene, which entails separating acrylic acid from the gas phase oxidation reaction using an absorbent containing biphenyl, diphenyl ether or dimethyl phthalate; and extracting acrylic acid from acid water of the gas phase reaction with a solvent containing biphenyl, diphenyl ether or dimethyl phthalate.

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