Hitachi Maxell, Limited

Osaka Gas Company Limited

Osaka Gas Chemicals Co., Ltd.

Masayuki Hirota

Hiroaki Ono

Hiroki Sakamoto

Masahiro Yamada

Hiroshi Fukunaga

Hiroaki Murase

Shuichi Wada

Masayuki Sugimoto

Yumi Hosogi

A rubbery composition is prepared by combining (A) a rubber component, (B) a cellulose, and (C) fluorene compound having a 9,9-bis(aryl)fluorene skeleton. The fluorene compound (C1) may be a compound represented by the following formula (1): wherein a ring Z represents an arene ring, Rand Rrepresent a substituent, Xrepresents a heteroatom-containing functional group, k denotes an integer of 0 to 4, n denotes an integer of not less than 1, p denotes an integer of not less than 0. The rubbery composition has improved mechanical properties such as strength, elongation, and hardness.

Rubbery composition and method for producing the same

A hydrogen storage alloy of Ni, Zr, Mn, Ti and at least one other element and at least two phases including a phase which contains at least one kind of Laves structure intermetallic compound, in which when atomic ratios of Ni, Zr, Mn and Ti are 'a', 'b', 'c' and 'd', respectively, 'a' is larger than 'b', 'b' is larger than 'c', 'c' is larger than 'd', and 'd' is larger than the atomic ratio of at least one other element, and a ratio b/a is larger than 5/8, a ratio c/a is smaller than 11/20 and a ratio d/a is smaller than 2/5, which alloy is useful as an active material of a negative electrode of a hydrogen storage alloy cell.

Hydrogen storage alloy, electrode comprising the same and hydrogen

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Osaka, Japan

Masayuki Hirota