Mitsubishi Petrochemical Company Limited

Masami Takahashi

Mitsutaka Miyabayashi

Akira Itsubo

Hiroyuki Omori

Akiyoshi Oonishi

Yoshitomo Nakano

Mituru Ueda

Kazuyuki Iida

A stabilizer composition for synthetic resin is described comprising a piperazine derivative represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl group having from 12 to 20 carbon atoms or a 2,2,6,6-tetramethyl-4-piperidyl group; R.sub.3 and R.sub.4 each represents a hydrogen atom or a methyl group; and n and m each represents 2 or 3. A synthetic resin composition is also described comprising polyolefin and the aforesaid piperazine derivative.

Stabilizer composition for synthetic resin and synthetic resin

An electrode material made of a carbonaceous material that is obtained by the pyrolysis of an organic compound capable of forming the graphite structure is disclosed. This carbonaceous material is such that the spacing of (002) planes, d002, is at least 3.37 .ANG. and thecrystallite size in the direction of c axis, Lc, is not more than 220 .ANG., as determined by X-ray wide-angle diffractiometry, and the line width .DELTA.Hpp between peaks in the first differential of the absorption spectrum of electron spin resonance is at least 10 gauss. The electrode material made of such carbonaceous material is capable of providing a stable secondary battery that produces high electromotive force and which has high energy density.

Electrode material

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Mie, Japan

Masami Takahashi