{
  "$type": "site.standard.document",
  "description": "Provided is a rubber composition for tires by which low rolling resistance and wet grip performance are enhanced beyond conventional levels. The rubber composition for tires comprises a diene rubber, silica, and a silane coupling agent, and is characterized in that a function v of a shear modulus…",
  "path": "/patents/927293",
  "publishedAt": "2017-05-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/00",
    "YOKOHAMA RUBBER CO LTD [JP]"
  ],
  "textContent": "Provided is a rubber composition for tires by which low rolling resistance and wet grip performance are enhanced beyond conventional levels. The rubber composition for tires comprises a diene rubber, silica, and a silane coupling agent, and is characterized in that a function v of a shear modulus G' of the rubber composition at 0.28% shear stress at 110°C, a CTAB specific surface area (CTAB) of the silica, a volume fraction (Õ) of the silica in the rubber composition, and a stress at 100% elongation (M 100 ) of the rubber composition satisfies the relationship of the following equation (i): G' = K × v. In equation (i), K is a coefficient greater than 0 and not greater than 450, and v is represented by the following equation (ii): v = Õ × (1 + 0.0258 × CTAB × M 100 ) and is a real number not less than 2.5 and not greater than 20.",
  "title": "RUBBER COMPOSITION FOR TIRE"
}