(US5116541-A)      An ion-conductive polymer electrolyte comprising an organic polymer and a soluble electrolyte salt is such that the organic polymer is obtd. by crosslinking a cpd. of average mol. wt. 1000-20000 and of structure of formula (I). In (I) Z is a residue of polyalcohols, amine cpds. cpds. having a phenolic active H or cpds. having different active H in a mol. and X is -COCH=CH2, -COC(CH3)=CH2 or (II). m is 1-250, n is 1-25, k is 1-12 and R is an alkyl, alkenyl, aryl or alkylaryl gp. of 1-20C atoms. The electrolyte salt contains opt. Li, Ca, K, Cs, Ag, Cu and Mg and organic-ion salts consist of Li stearylsulphate, sodium octylsulphate etc.    ADVANTAGE -   The ion-conductive polymer electrolyte shows excellent ion conductivity and can be easily handled.    (JP2762145-B2)      An ion-conductive polymer electrolyte is claimed comprising: (A) org. polymer obtd. by crosslinking cpd. (I) having av. mol.wt. 1000-2000 and structure of formula (1) (Z= residue of cpd. having active H(s); Y = (a) H or (b)9 polymsn.-reactive functl. gp.; m = 1-250; n = 0-25; k = 1-12; and R = 1-20C alkyl, alkenyl, aryl or alkylaryl); and (B) sol. electrolyte salt.    USE/ADVANTAGE -   Amorphous, stable, easy-to-handle ion-conductive polymer electrolyte with excellent ion conductivity, opt. crosslinkable without using crosslinking agent, is useful for battery and electrochromic applications.    (JP2813828-B2)      An ion-conductive polymer electrolyte is claimed comprising: (A) org. polymer obtd. by crosslinking cpd. (I) having av. mol.wt. 1000-2000 and structure of formula (1) (Z= residue of cpd. having active H(s); Y = (a) H or (b)9 polymsn.-reactive functl. gp.; m = 1-250; n = 0-25; k = 1-12; and R = 1-20C alkyl, alkenyl, aryl or alkylaryl); and (B) sol. electrolyte salt.    USE/ADVANTAGE -   Amorphous, stable, easy-to-handle ion-conductive polymer electrolyte with excellent ion conductivity, opt. crosslinkable without using crosslinking agent, is useful for battery and electrochromic applications.