Process for preparing solid, free-flowing water-soluble salts of aryloxy-C.sub.1 -C.sub.4 -alkanecarboxylic acids

US5939584A · kind A · utility

Assignee

• BASF SE

Inventors

• Hans Rupert Merkle · Ludwigshafen, DE
• Karl Brenner · Ludwigshafen, DE
• Erich Fretschner · Neckarsteinach, DE
• Michael Schönherr · Bischofswerda, DE
• Anne van Gastel · Neustadt an der Weinstraße, DE

Key dates

• Filing date: Jun 18, 1997
• Grant date: Aug 17, 1999
• Expiry date: Jun 18, 2017

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01N39/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Process for preparing solid, free-flowing water-soluble salts of aryloxy-C.sub.1 -C.sub.4 -alkanecarboxylic acids by reacting the aryloxy-C.sub.1 -C.sub.4 -alkanecarboxylic acids with a salt-forming base, the salt formation taking place in the melt in the presence or absence of an entraining agent suitable for the azeotropic removal of water or in solution in the presence of an entraining agent suitable for the azeotropic removal of water and, if appropriate, removing the entraining agent from the reaction mixture during the reaction or subsequently and then isolating the solid salts in a customary manner.