Abstract: Disclosed is a nonaqueous electrolytic solution which enables formation of a nonaqueous-electrolyte battery having high capacity and excellent storage characteristics at high temperatures, while sufficiently enhancing safety at the time of overcharge. A nonaqueous-electrolyte battery produced by using the nonaqueous electrolytic solution is also disclosed. The nonaqueous electrolytic solution comprises an electrolyte and a nonaqueous solvent, and includes any of specific nonaqueous electrolytic solutions (A) to (D).

Abstract: A polyurethane and a polyurethane-urea are provided which are extremely useful in high-performance polyurethane elastomer applications such as elastic polyurethane fibers, synthetic/artificial leathers, and TPUs. Disclosed are: a process for producing a polyurethane from (a) a polyether polyol obtained by a dehydration condensation reaction of a polyol and containing a 1,3-propanediol unit, (b) a polyisocyanate compound, and (c) a chain extender, wherein the polyurethane is produced in the co-presence of an aprotic polar solvent; a polyurethane produced by the process for polyurethane production; and a film and a fiber each comprising the polyurethane.