Process for removing methacrolein from liquid phase comprising acrylic acid as a main constituent and target product, and methacrolein as a secondary component

US7601866B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Joerg Heilek · Bammental, DE
• Klaus Joachim Mueller-Engel · Blankenloch, DE
• Christoph Adami · Weinheim, DE
• Martin Dieterle · Ludwigshafen, DE

Key dates

• Filing date: Feb 22, 2006
• Grant date: Oct 13, 2009
• Expiry date: Feb 24, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/43
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for removing methacrolein from liquid phase P comprising acrylic acid as a main constituent and target product, and methacrolein as a secondary component in which the removal is effected by crystallization, the acrylic acid accumulating in the crystals formed and the methacrolein in the remaining mother liquor.