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

Abstract

A mixture Ia comprises a mix IIa composed of a) 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 μm and b) from 5 to 99% by weight of a polymeric composition IV, obtainable by polymerizing b1) from 5 to 100% by weight, based on the composition IV, of a condensation product V of α) 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 β) 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 and b2) 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—CH3, where n is from 1 to 3, C3-C6-cycloalkyl or an aromatic hydrocarbon group which may in turn be substituted, with the proviso that at least one of the groups R1, R2, R3 or R4 is (—CH2—CH2—O)n—CH3, where n is from 1 to 3.

Dependencies are inferred from the claim text.