| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber modifier using a cellulose fiber and capable of providing a rubber composition high in fracture strength and small in energy loss.SOLUTION: A rubber modifier consists of a cellulose fiber and a number average fiber diameter of the cellulose fiber is 80 nm or less, and the cellulose fiber has less than 3 mPa s of viscosity at a shear rate of 100 smeasured at 25°C when making 0.1 wt.% of a water dispersion. There are provided a rubber modifier dispersion containing the rubber modifier, a rubber latex dispersion containing the rubber modifier and rubber latex, a rubber composition containing the rubber modifier and a rubber, a rubber composition manufactured by using the rubber latex dispersion, and the vulcanized rubber composition manufactured by vulcanizing the rubber composition. |
