{
  "$type": "site.standard.document",
  "description": "Provided are a rubber composition and a tire which provide improved overall performance including excellent abrasion resistance and fuel economy during high speed running. Included is a rubber composition which contains: rubber components including an isoprene-based rubber and a polybutadiene…",
  "path": "/patents/1403082",
  "publishedAt": "2026-04-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/00",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "Provided are a rubber composition and a tire which provide improved overall performance including excellent abrasion resistance and fuel economy during high speed running. Included is a rubber composition which contains: rubber components including an isoprene-based rubber and a polybutadiene rubber; silica; and a modified rubber material functionalized with a thiuram sulfide compound, has a silica content of 30 to 150 parts by mass per 100 parts by mass of the rubber components, and satisfies the following relationship (1) with respect to the isoprene-based rubber content and the polybutadiene rubber content: (1) Isoprene-based rubber content > Polybutadiene rubber content.",
  "title": "RUBBER COMPOSITION AND TIRE"
}