Bridgestone Corporation

Masanori Kawamura

Uchu Mukai

Keiji Asatsuma

Kazuhide Sato

Disclosed is a method for manufacturing a carbide for reinforcing rubber articles that is capable of effectively utilizing polymer waste. The method includes the steps of mixing a carbide, obtained by thermal decomposition or incomplete combustion of polymer waste and pulverized by grinding, with carbon black to obtain a mixture of the carbide and the carbon black, and granulating the mixture using a granulating machine at a rotation speed of 70 rpm to 130 rpm.

Method for manufacturing carbide for reinforcing rubber articles

A rubber composition comprises natural rubber and/or a diene based synthetic rubber, and carbon black. The carbon black has characteristics that a line-width .DELTA.H (mT) in an electron spin resonance (ESR) satisfies .DELTA.H(mT).gtoreq..sub.e 0.11T-7.56+5 in which T is a colored transmittance (%) falling in a range of 100-60%, and an N.sub.2 SA value of the carbon black is not less than 114 m.sup.2 /g to 250 m.sup.2 g.

Growing community of inventors

Nishi-ku, Japan

Masanori Kawamura