Mitsubishi Petrochemical Company Limited

Japan Ep Rubber Co., Ltd.

Masato Yoshikawa

Kunimasa Takahashi

Takashi Kameda

Teruo Teranishi

Masao Shiraishi

Masakatu Isozumi

Manufacture of granulated self-sintering carbonaceous pulverulent body suitable for precise complicated molding in high speed productivity is conducted in the presence of a wetting agent and a binding agent in the water-pulverulent mixture by using spray drying machine in the atmosphere of the hot air kept at a temperature up to 200.degree. C. optionally in admixture with superheated steam kept at a temperature up to 200.degree. C.

Production of carbonaceous powders and their granulation

A linear ethylene-propylene random rubbery copolymer composed of 78 to 85 mole% of an ethylene unit and 15 to 22 mole% of a propylene unit and having a Mooney viscosity (ML.sub.1+4, 100.degree. C) of 30 to 50 and a molecular weight distribution corresponding to a Q value of 3.5 to 5.5. The rubbery copolymer may further contain a nonconjugated diene unit in an amount of 4 mole% or less based on the total amount of the ethylene, propylene and nonconjugated diene units. The ethylene-propylene copolymer or ethylene-propylene-nonconjugated diene copolymer affords a cable coating material having improved processability, and when blended with polyethylene or polypropylene, gives a blend having good flowability.

Ethylene-propylene rubbery copolymer

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Yokkaichi, Japan

Masato Yoshikawa