Ion exchangers

US5647987A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Egbert Muller · Langen (Hessen), DE
• Roland Gensert · Rödermark, DE
• Peter Poguntke · Otzberg, DE

Key dates

• Filing date: Apr 3, 1996
• Grant date: Jul 15, 1997
• Expiry date: Apr 3, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J39/26
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to separation materials for ion exchange chromatography which are based on hydroxyl-containing base supports on whose surfaces polymers are covalently bonded, characterized in that PA1 a) the base support contains aliphatic hydroxyl groups, PA1 b) the covalently bonded polymers are bonded to the base support via a terminal monomer unit, PA1 c) the polymers contain monomer units of both the formula II and the formula III, PA1 d) the monomer units are linked linearly, ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently of one another are H or CH.sub.3, PA1 R.sup.4 is H, C.sub.1 -C.sub.5 -alkyl or C.sub.6 -C.sub.12 -aryl, PA1 n is an integer between 1 and 5, PA1 one radical X is OH and the other radical X is NR.sup.5 R.sup.6, N.sup.+ R.sup.5 R.sup.6 R.sup.7 or SO.sub.3 H, and PA1 R.sup.5, R.sup.6 and R.sup.7 independently of one another are C.sub.1 -C.sub.4 -alkyl, it also being possible for one or both radicals R.sup.5 and/or R.sup.6 to be H.