| abstract |
In recent years, many silica formulations are used for fuel-saving tires, and since the reaction of a silica and a silane coupling agent is moderate, multistage kneading | mixing etc. are performed. The present invention provides a rubber composition and a rubber filler having excellent processability and dynamic properties for simplifying the kneading process. The present invention provides a filler composition comprising a silica-based filler, a silane coupling agent, a hydroxy acid and / or a salt of a hydroxy acid, a filler obtained by reacting the filler composition, a rubber composition comprising the filler and a crosslinked product thereof, or diene Composition comprising a rubber, silica, silane coupling agent, hydroxy acid and / or salt of hydroxy acid, and a crosslinked product thereof. |