Mixtures with special softening agents suited as a solid electrolyte or separator for electrochemical cells

US6642294B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Stephan Bauer · Ostercappeln, DE
• Bernd Bronstert · Otterstadt, DE
• Helmut Möhwald · Annweiler am Trifels, DE
• Hans-Josef Sterzel · Schifferstadt, DE
• Werner Hesse · Großburgwedel, DE

Key dates

• Filing date: Jul 17, 2000
• Grant date: Nov 4, 2003
• Expiry date: Jul 17, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A mixture Ia comprises a mix IIa composed ofa) from 1 to 95% by weight of a solid III, preferably a basic solid III, with a primary particle size of from 5 nm to 20 &mgr;m andb) from 5 to 99% by weight of a polymeric composition IV, obtainable by polymerizingb1) from 5 to 100% by weight, based on the composition IV, of a condensation product V of&agr;) at least one compound VI which is capable of reacting with a carboxylic acid or with a sulfonic acid or with a derivative or a iixture of two or more of these, and&bgr;) at least 1 mol per mole of the compound VI of a carboxylic acid or sulfonic acid VII which has at least one functional group capable of free-radical polymerization, or of a derivative thereof or of a mixture of two or more thereof andb2) from 0 to 95% by weight, based on the composition IV, of another compound VIII with an average molecular weight (number average) of at least 5000 having polyether segments in its main or side chain and at least one ester of the formula (E1) to (E5) where each of R1, R2, R3 and R4 is identical with or different from the others and, independently of the others, is linear or branched-chain C1-C4-alkyl (—CH2—CH2—O)n&#82…