Covalently cross-linked polymers and polymer membranes via sulfinate alkylation

US6982303B2 · kind B2 · utility

Inventors

• Jochen Kerres · Esslingen am Neckar, DE
• Wei Zhang · Brecksville, US
• Chy-Ming Tang · Weinheim, DE
• Thomas Häring · Stuttgart, DE

Key dates

• Filing date: Jun 19, 2002
• Grant date: Jan 3, 2006
• Expiry date: Jun 19, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A covalently cross-linked polymer or polymer membrane consisting of one or more polymers, which can bear the following functional groups (M=Hal(F, Cl, Br, I), OR, NR2; R=alkyl, hydroxyalkyl, aryl; (Me=H, Li, Na, K, Cs, or other metal cations or ammonium ions): a) precursors of cation exchange groups: SO2M and/or POM2 and/or COM b) sulphinate groups SO2Me and which can be covalently cross-linked using the following organic compounds: a) di-, tri- or oligofunctional haloalkanes or haloaromatics, which have been reacted with sulphinate groups SO2Me, whereby the following cross-linking bridges are present in the polymer/in the polymer blend/in the polymer membrane: (Y=cross-linking bridges, X=Hal (F, Cl, Br, I), OR, (CH2)x—; -arylene-; —(CH2)x-arylene-; CH2arylene-CH2—, x=3-12): polymer-SO2Y—SO2-polymer and/or b) compounds containing the following groups: Hal-(CH2)x—NHR, one side of which (Hal-) has been reacted with sulphinate groups SO2ME and the other side (—NHR) with SO2M groups, whereby the following cross-linking bridges are present in the polymer/in the polymer blend/in the polymer membrane: polymer-SO2—(CH2)x—NR—SO2 polymer and/or c) compounds containing the following groups: N…