Patent · US Active

Process for producing acrylic acid

US8242308B2 · kind B2 · utility

25Cited by

23References

20Claims

0Family size

Assignee

Arkema Inc. · US

Inventors

Fungau Ho · Charleston, US
Olan S. Fruchey · Port Aransas, US
Roger L. Roundy · Hurricane, US
William G. Etzkorn · Cross Lanes, US
Christopher T. Reeves · Hurricane, US
Mahmood N. A. Jawaid · Cross Lanes, US
Edmund J. Yang · Houston, US
Dennis W. Jewell · Angleton, US

Key dates

Filing date	Aug 31, 2007
Grant date	Aug 14, 2012
Priority date	—
Expiry date	Sep 10, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/44
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The process for the distillation of a gas mixture comprising (meth)acrylic acid obtained from the gas-phase oxidation of at least one (meth)acrylic acid precursors is improved through the use of coupled distillation columns. In a first column, the gaseous mixture is dehydrated while in a second column, the dehydrated gaseous mixture is distilled into product, overhead and bottoms streams.

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