Method of obtaining water-free 2-trimethylammoniumethyl methacrylate chloride (TMAC) from an aqueous solution

US5849946A · kind A · utility

Assignee

• Roehm GmbH Chemische Fabrik · DE

Inventors

• Peter J. Arndt · Seeheim-Jugenheim, DE
• Werner Ude · Darmstadt, DE
• Klaus Gottmann · Heppenheim, DE
• Thomas Kehr · Heilbad Heiligenstadt, DE

Key dates

• Filing date: May 16, 1997
• Grant date: Dec 15, 1998
• Expiry date: May 16, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C213/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method of obtaining water-free 2-trimethylammoniumethyl methacrylate chloride (TMAC) characterized in that an aqueous TMAC solution is subjected to the following operations: PA1 (a) Azeotropic removal using an alkyl (meth)acrylate; and PA1 (b) Filtration of the resulting suspension.