{
  "$type": "site.standard.document",
  "description": "The present invention provides a rubber composition for a base tread improving steering stability and rolling resistance properties and a tire comprising the same. The present invention relates to a rubber composition for a base tread comprising a rubber component containing (a) 20 to 60 % by…",
  "path": "/patents/1067711",
  "publishedAt": "2006-05-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0016",
    "SUMTIOMO RUBBER IND LTD [JP]"
  ],
  "textContent": "The present invention provides a rubber composition for a base tread improving steering stability and rolling resistance properties and a tire comprising the same. The present invention relates to a rubber composition for a base tread comprising a rubber component containing (a) 20 to 60 % by weight of a polybutadiene rubber containing 2.5 to 20 % by weight of a 1,2-syndiotactic polybutadiene crystal, (b) 5 to 80 % by weight of a tin-modified polybutadiene rubber polymerized by a lithium initiator, wherein the amount of a tin atom is 50 to 3000 ppm, the amount of a vinyl bond is 5 to 50 % by weight and molecular weight distribution (Mw/Mn) is at most 2, and (c) 10 to 75 % by weight of a rubber other than (a) and (b), and a tire having a base tread comprising the same.",
  "title": "Rubber composition for base tread and tire comprising the same"
}