{
  "$type": "site.standard.document",
  "description": "Provided are a rubber composition achieving balanced improvements in fuel economy, wet-grip performance, abrasion resistance, and handling stability, and a pneumatic tire including the composition. The rubber composition includes a rubber component including at least 95% by mass of conjugated diene…",
  "path": "/patents/969060",
  "publishedAt": "2014-10-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/00",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "Provided are a rubber composition achieving balanced improvements in fuel economy, wet-grip performance, abrasion resistance, and handling stability, and a pneumatic tire including the composition. The rubber composition includes a rubber component including at least 95% by mass of conjugated diene polymers having a Tg of - 75-0°C and a Mw of 1.5×10-1.5×10, the rubber component (100% by mass) including 5-65% by mass of SBR (A) having a styrene content of at least 5% by mass but less than 15% by mass and a vinyl bond content of 10-70 mol%, and 20-75% by mass of SBR (B) having a styrene content of at least 15% by mass but less than 30% by mass and a vinyl bond content of 10-70 mol%, the composition including, per 100 parts by mass of the rubber component, 1-30 parts by mass of a low-molecular-weight conjugated diene polymer having a Tg of-75-0°C and a Mw of at least 1.0×10but less than 1.5×10, and 10-150 parts by mass of silica having a NSA of 40-400 m/g, the composition having a tan δ peak temperature of at least -20°C.",
  "title": "RUBBER COMPOSITION AND PNEUMATIC TIRE"
}