Process for producing cation exchangers

US8207284B2 · kind B2 · utility

Assignee

• LANXESS Deutschland GmbH · DE

Inventors

• Pierre Vanhoorne · Monheim, DE
• Hans-Jurgen Wedemeyer · Leverkusen, DE

Key dates

• Filing date: Oct 7, 2011
• Grant date: Jun 26, 2012
• Expiry date: Oct 7, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2001/425
• WIPO field: Food chemistry
• WIPO sector: Chemistry

Abstract

Strongly acidic cation exchangers with high mechanical, osmotic and oxidation stability can be prepared by sulfonating bead polymers formed from one or more vinylaromatic monomer(s), one or more crosslinker(s) and from 0.2 to 20% by weight of one or more vinyl ethers and/or vinyl esters.