Aqueous solution comprising acrylic acid and the conjugate base thereof

US9150483B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Frank Huetten · Mannheim, DE
• Otto Machhammer · Mannheim, DE
• Thomas Daniel · Waldsee, DE
• Markus Ottenbacher · Wilhelmsfeld, DE
• Daniel Pfeiffer · San Francisco, US
• Stefanie Herzog · Mannheim, DE
• Manfred Heilig · Ludwigshafen am Rhein, DE
• Klaus Joachim Mueller-Engel · Blankenloch, DE

Key dates

• Filing date: May 30, 2012
• Grant date: Oct 6, 2015
• Expiry date: Jun 25, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

An aqueous solution comprising acrylic acid and the conjugate base thereof in a total amount of at least 10% by weight, based on the weight of the aqueous solution, and propionic acid and the conjugate base thereof, formic acid and the conjugate base thereof, acetic acid and the conjugate base thereof, benzoic acid and the conjugate base thereof, maleic anhydride, maleic acid and the conjugate bases thereof, phthalic anhydride, phthalic acid and the conjugate bases thereof, acrolein, benzaldehyde, 2-furaldehyde, and at least 20 mol % of at least one alkali metal cation;