{
  "$type": "site.standard.document",
  "description": "The present invention provides a rubber composition capable of improving fuel economy and wet grip performance while maintaining good processability, abrasion resistance and handling stability or improving them, as well as a pneumatic tire including the rubber composition. The rubber composition…",
  "path": "/patents/960799",
  "publishedAt": "2015-05-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/00",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "The present invention provides a rubber composition capable of improving fuel economy and wet grip performance while maintaining good processability, abrasion resistance and handling stability or improving them, as well as a pneumatic tire including the rubber composition. The rubber composition contains carbon black, silica, and a polymer mixture obtained by modifying a polymer derived from a conjugated diene compound and/or an aromatic vinyl compound with a compound containing an ester group and/or a carboxyl group, the polymer mixture having a weight average molecular weight of from 1.0 × 10to 1.0 × 10, the rubber composition having a tanδ peak temperature of -20°C or higher, a rubber hardness of from 63 to 75, and a tanδ at 70°C of from 0.15 to 0.45.",
  "title": "RUBBER COMPOSITION AND PNEUMATIC TIRE"
}