Method for purifying methacrylamidopropyl trimethylammonium chloride and related compounds

US4517380A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Peter J. Arndt · Seeheim-Jugenheim, DE
• Manfred Muller · Berlin, DE
• Fritz Schlosser · Darmstadt, DE
• Franz Wenzel · Darmstadt, DE

Key dates

• Filing date: Jun 29, 1984
• Grant date: May 14, 1985
• Expiry date: Jun 29, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C233/89
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Methacrylamidopropyl trimethylammonium chloride and similar quaternized aminoalkyl esters or aminoalkylamides of acrylic acid or methacrylic acid are purified by extraction of an aqueous solution thereof with dichloromethane to remove impurities, such as allyl methacrylamide, which may be formed by a Hofmann degradation of the compounds.