Polymeric ammonium compounds with a silica-type backbone, processes for their preparation and use

US4410669A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Peter Panster · Rodenbach, DE
• Peter Kleinschmit · Hanau, DE

Key dates

• Filing date: May 10, 1982
• Grant date: Oct 18, 1983
• Expiry date: May 10, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/48
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Polymeric ammonium compounds are disclosed which have a silica-type backbone, comprised of units having the formula: ##STR1## in which R.sup.1 and R.sup.2 represent a group ##STR2## in which R.sup.5 is an alkylene grouping and the free valencies of the oxygen atoms are saturated by silicon atoms of further groups (2), if appropriate with incroporation of crosslinking agents, R.sup.3 and R.sup.4 have the meaning of R.sup.1 and R.sup.2 or represent hydrogen, an alkyl group, cycloalkyl group or the benzyl group, X represents a 1- to 3-valent anion of a protonic acid which forms stable salts with amine bases and x can be a number from 1 to 3. Also disclosed are processes for preparing the polymeric ammonium compounds and to the use of these materials as ion exchange materials.