Preparation of (meth)acrylic acid

US6051736A · kind A · utility

Assignee

• BASF SE

Inventors

• Armin Schraut · Bensheim, DE
• Michael-Dieter Ulbrich · Freinsheim, DE
• Freidrich-Georg Martin · Heidelberg, DE
• Bernd Eck · Viernheim, DE
• Jorg Heilek · Bammental, DE

Key dates

• Filing date: Mar 6, 1998
• Grant date: Apr 18, 2000
• Expiry date: Mar 6, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/48
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention is directed toward preparation of (meth)acrylic acid, comprising condensation of a gas comprising (meth)acrylic acid, absorption with water, and extraction with an aqueous solution forming a miscibility gap.