Toyota Jidosha Kabushiki Kaisha

Toyoda Gosei Co., Ltd.

Seiichi Sahara

Masayoshi Ichikawa

Tadaoki Okumoto

Masatoshi Sugimoto

Tetsuo Yamada

Kinrou Hashimoto

Norio Sato

Kenzo Fukumori

Narihito Tatsuda

Noriyuki Horiuchi

Fujio Ninomiya

Takashi Kawazoe

Hideki Ono

Kenichi Funato

A process is developed for recycling a polyolefin cross-linked substance having a cross-linkage, a polyolefin foamed substance free from a cross-linkage or a polyolefin foamed substance having a cross-linkage. The process includes the step of heating the polyolefin cross-linked substance together with a cross-linkage breaking agent, whereby breaking the cross-linkage to recycle the polyolefin cross-linked substance into a moldable thermoplastic resin. Further, the process includes the step of adding a foaming-agent-decomposition facilitating agent to the polyolefin foamed substance in the course of thermally melting the polyolefin foamed substance, whereby decomposing a residual foaming agent remaining in the polyolefin foamed substance. Furthermore, the process includes the step of adding a foaming-agent-decomposition facilitating agent to the polyolefin foamed substance in the course of heating the polyolefin foamed substance to break the cross-linkage, whereby decomposing a residual foaming agent remaining in the polyolefin foamed substance. The resulting recycled product is improved in terms of moldability, strength, elongation and superficial appearance.

Process for recycling polyolefin cross-linked substance or polyolefin

An oil resistant diaphragm having a liquid contacting surface made of a vulcanized rubber composition of, or composed mainly of, partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units is hydrogenated. This diaphragm is superior in resistance to deteriorated gasoline and low temperature, and is suitable for the automobile fuel pump.

Diaphragm

An oil resistant rubber hose having an internal layer made of a vulcanized rubber composition of, or composed mainly of, partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units is hydrogenated. This rubber hose is superior in resistance to deteriorated gasoline and low temperature, and is suitable for the automobile fuel line.

Rubber hose comprising a liquid nitrile-butadiene copolymer incorporated

Growing community of inventors

Nagoya, Japan

Seiichi Sahara