The rubber constituent, the granulated powder Characteristic rubber constituent and the attenuation Characteristic rubber

摘要

This invention, the conjugate diene rubber 100 weight section, and cyclization ratio 25 - 90%, the weight average molecular weight of the polystyrene conversion which was measured with the gel permeation chromatography (Mw) with the Kazuhei equal molecular weight (Mn) with ratio (Mw/Mn) vulcanizing the vulcanization characteristic rubber composition, and this vulcanization characteristic rubber composition which combine the vulcanizing agent to the rubber composition and this rubber composition which consist of the conjugate diene based polymerization annulus chemical material 5 - 100 weight sections of 2 or less, is attenuation characteristic rubber vulcanization ones which become. According to this invention, it possesses sufficient rubber strength, at the same time, the ideal rubber composition and the vulcanization characteristic rubber composition are offered to the production of attenuation characteristic rubber vulcanization ones and said rubber vulcanization ones which are superior in attenuation characteristic over the temperature limits whose to high temperature is wide from low temperature.