Nishikawa Rubber Co., Ltd.

Other

Nakamichi Yamasaki

Hiroyuki Okuda

Kenji Tsuda

Toshinari Tenno

Takahiro Yoshida

The present invention provides a vulcanizable rubber composition containing (A) an ethylene/&#x3b1;-olefin/nonconjugated polyene copolymer rubber, (B) a polyolefin resin and (C) a blowing agent, wherein the polyolefin resin (B) is microdispersed in a melted state in the ethylene/&#x3b1;-olefin/nonconjugated polyene copolymer rubber (A), the polyolefin resin (B) having an average dispersed particle diameter of 2 &#x3bc;m or less, the polyolefin resin (B) is present in an amount of from 5 to 15 parts by mass per 100 parts by mass of the ethylene/&#x3b1;-olefin/nonconjugated polyene copolymer rubber (A), the blowing agent (C) is present in an amount of from 2 to 6 parts by mass per 10 parts by mass of the ethylene/&#x3b1;-olefin/nonconjugated polyene copolymer rubber (A), and the vulcanizable rubber composition has a specific gravity of from 1.05 to 1.15 and a Mooney viscosity (Vm) at 125&#xb0; C. of from 25 to 55.

Vulcanizable rubber composition

A process for the desulfurization of a sulfur-containing composition is described. The process comprises providing a sulfur-containing composition, adding an aqueous medium and a sulfur absorbent to the composition, and subjecting the resultant mixture to hydrothermal reaction under specific conditions to obtain a desulfurized product. When the sulfur-containing composition is made of vulcanized rubbers, the rubber can be converted into oily substances by treating the rubber product under supercritical conditions using an aqueous medium. The conversion reaction is facilitated by addition of metal oxides or salts.

Process for the desulfurization of sulfur-containing compositions by

Process for the conversion of vulcanized rubbers into oils by use of

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Hiroshima, Japan

Hiroyuki Okuda