abstract |
The present invention provides a rubber composition, innwhich reaction efficiency of the silane coupling agent in kneading isnimproved, generation of bubbles is suppressed, abrasion resistance isnimproved and rolling resistance is reduced. Specifically, the rubberncomposition comprises silica and 3 to 15 parts by weight of a silanencoupling agent and 1.5 to 15 parts by weight of a potassium salt basednon 100 parts by weight of the silica. |