Method for producing rubber composition

摘要

A method for producing a rubber composition, comprising a first mixing step of causing a diene rubber, a carbon black, and a dihydrazide compound to react with each other in the presence of no silica while the three of the diene rubber, the carbon black, and the dihydrazide compound are kneaded, and a second mixing step of adding a silica to the kneaded product yielded through the first mixing step, and then mixing the silica with the kneaded product.

主权项

1. A method for producing a rubber composition, comprising a first mixing step and a second mixing step, in this order;
wherein the first mixing step comprising kneading a diene rubber, a carbon black, and a dihydrazide compound for 1 to 6 minutes with each other in order to react with each other in the presence of no silica, and wherein the second mixing step comprising adding a silica to the kneaded product from the first mixing step, and then mixing the silica with the kneaded product, wherein, during the second mixing step, the silica is blended in an amount of 2 to 40 parts by mass for 100 parts by mass of the diene rubber.