Copolymer, a process for its preparation and its use as a sorbent

US4552905A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Karl-Heinz Keil · Hanau, DE
• Ulrich Greiner · Schöneck, DE
• Fritz Engelhardt · Frankfurt am Main, DE
• Klaus Kuhlein · Kelkheim, DE
• Reinhold Keller · Bad Soden am Taunus, DE
• Merten Schlingmann · Königstein, DE

Key dates

• Filing date: Jun 22, 1984
• Grant date: Nov 12, 1985
• Expiry date: Jun 22, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The crosslinked copolymer containing 75 to 99.9% by weight of recurring units of a pyridyl, quinolyl, isoquinolyl or pyrazinyl compound containing a polymerizable olefinic group, 0.1 to 25% by weight of units of a crosslinking agent and 0 to 25% by a weight of units of a polymerizable organosilicon and/or organoboron compound and, based on 100% by weight of the sum of the abovementioned units, 5 to 350% by weight of units of an N-vinyl-amide, is prepared by bead polymerization and used as a sorbent for acid substances from their aqueous solutions.