(US5098589-A)      Ion conductive polymer electrolyte comprises an organic polymer and a soluble electrolyte salt. The organic polymer is obtd. by crosslinking an organic cpd. of formula Z((R1)L-(R20)m-Y)k (1) having a average mol.wt. of 1,000-20,000. In (1), Z is a residue of a cpd. having at least 1 active H; R1 is a gp. of formula (2); n is 0-25; R is 1-12C alkyl, alkenyl, aryl or alkylaryl; R2 is 2-20C alkylene; Y is H, a gp. having at least 1 unsatd. bond or Si contg. gp.; k is 1-12; l is 1-230; m is 1-300 and l/(l+m) is at least 0-1. Pref. Y is a polymerisable functional gp. and the organic polymer is crosslinked by heat, light or electronic ray, using polymerisation initiator and/or sensitiser.    ADVANTAGE -   Electrolyte has good ion conductivity and may be easily handled.    (JP2813831-B2)      New ion-conductive polymer electrolyte comprises an organic polymer and a soluble electrolyte salt, where the organic polymer is obtd. by crosslinking an organic cpd. of mol. wt. 1000-20000 and having a structure of formula Z-((R1)l-(R2O)m-Y)k (I), Z is residue of a cpd. having at least one active H, R1 is a gp. of formula (II), n is 0 or 1-25, R is 1-20C alkyl, alkenyl, aryl or alkylaryl, R2 is alkylene contg. not less than 2C atoms, Y is H or polymerisable functional gp., l is 1-230 and m is 1-300 where l/(l+m) is at least 0.1.    Pref. R2 is 2-3C alkylene, l is 1-220, m is 1-240 and l/(l+m) is 0.3 or R2 is alkylene contg. not less than 4C atoms and l/(l+m) is greater than or equal to 0.2. Y is H and the organic polymer is a thermosetting polymer crosslinked with a crosslinking agent or Y is a polymerisable functional gp. and the organic polymer is crosslinked by heat, light or electronic ray, opt. using a polymerisation initiator and/or a sensitiser.    USE/ADVANTAGE -   New ion-conductive polymer electrolyte shows improved Li-ion conductivity, is economically produced, is easily handled and is suitable for use in batteries.    (JP2813832-B2)      New ion-conductive polymer electrolyte comprises an organic polymer and a soluble electrolyte salt, where the organic polymer is obtd. by crosslinking an organic cpd. of mol. wt. 1000-20000 and having a structure of formula Z-((R1)l-(R2O)m-Y)k (I), Z is residue of a cpd. having at least one active H, R1 is a gp. of formula (II), n is 0 or 1-25, R is 1-20C alkyl, alkenyl, aryl or alkylaryl, R2 is alkylene contg. not less than 2C atoms, Y is H or polymerisable functional gp., l is 1-230 and m is 1-300 where l/(l+m) is at least 0.1.    Pref. R2 is 2-3C alkylene, l is 1-220, m is 1-240 and l/(l+m) is 0.3 or R2 is alkylene contg. not less than 4C atoms and l/(l+m) is greater than or equal to 0.2. Y is H and the organic polymer is a thermosetting polymer crosslinked with a crosslinking agent or Y is a polymerisable functional gp. and the organic polymer is crosslinked by heat, light or electronic ray, opt. using a polymerisation initiator and/or a sensitiser.    USE/ADVANTAGE -   New ion-conductive polymer electrolyte shows improved Li-ion conductivity, is economically produced, is easily handled and is suitable for use in batteries.