| abstract |
(57) [Abstract] [PROBLEMS] To provide a star-shaped block polyether useful as an ionic conductor for batteries. A star block polymer represented by the following formula (1). Embedded image (In the formula, R 1 is an aliphatic hydrocarbon residue having 1 to 16 carbon atoms which may be substituted, R 2 is hydrogen, an alkyl group which may be substituted having 1 to 16 carbon atoms, an alkenyl group, fluorine substitution Alkyl group, fluorine-substituted alkenyl group, phenyl group, An alkyl-substituted phenyl group, an acryloyl group, and a methacryloyl group are shown, and m ≧ 1, n ≧ 1, and L = an integer of 3 to 8) |