Bridgestone Corporation

Satoshi Takezawa

Naruhiko Mashita

Shinichi Toyosawa

Fumio Sato

Junichi Yamagishi

Takatsugu Hashimoto

Kazuo Yagawa

Kazuo Hachiya

A shoe member is formed of a polymer composition comprising (A) a composite material having a low molecular weight material retained in a medium material and (B) a polymer material. The low molecular weight material has a viscosity of up to 5.times.10.sup.5 centipoise at 100.degree. C. The difference in solubility parameter between the low molecular weight material and the medium material is up to 3.0. The weight ratio of low molecular weight material/medium material is at least 1.0. The difference in solubility parameter between the low molecular weight material and the polymer material is up to 4.0. The weight ratio of low molecular weight material/polymer material is at least 0.5. The polymer composition is enclosed in a rubbery or elastomeric cover particularly when it is used in the outsole.

Footwear sole member

Footwear member

A flame-retardant rubber composition has an oxygen index of 19.8-27.5 and comprises not more than 24% by weight of red phosphorus as a flame retardant based on the rubber composition and a nitrile group-containing elastomer as a flame-retardant polymer component as a part of rubber ingredients constituting the rubber composition. Such flame-retardant rubber compositions are very useful in applications such as industrial goods, tire and the like strongly requiring the fire preventing function.

Flame-retardant rubber compositions

Growing community of inventors

Kodaira, Japan

Satoshi Takezawa