{
  "$type": "site.standard.document",
  "description": "A rubber composition for a tire, comprises a rubber component, a resin component, and a filler, wherein: the rubber component contains a rubber having isoprene skeleton and a styrene-butadiene rubber; the styrene-butadiene rubber has a glass transition temperature lower than -40 °C; a content of…",
  "path": "/patents/1393123",
  "publishedAt": "2026-02-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0016",
    "BRIDGESTONE CORP [JP]"
  ],
  "textContent": "A rubber composition for a tire, comprises a rubber component, a resin component, and a filler, wherein: the rubber component contains a rubber having isoprene skeleton and a styrene-butadiene rubber; the styrene-butadiene rubber has a glass transition temperature lower than -40 °C; a content of the resin component is in the range of ≥ 1 and < 50 parts by mass with respect to 100 parts by mass of the rubber component; the resin component has been at least partially hydrogenated and a difference in SP value between the resin component and the isoprene skeleton rubber is ≤ 1.40 (cal/cm); and the rubber composition satisfies the formula shown below: a mass ratio of the resin component/the isoprene skeleton rubber is ≥ 0.5.",
  "title": "RUBBER COMPOSITION FOR TIRE, TREAD RUBBER, AND TIRE"
}