{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A rubber composition for use in a tread of a pneumatic tire is disclosed. The rubber composition comprises, based on 100 parts by weight of elastomer (phr), (A) from 40 to 90 phr of a solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) in a range of from -65 °C…",
  "path": "/patents/927441",
  "publishedAt": "2017-04-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0016",
    "GOODYEAR TIRE & RUBBER [US]"
  ],
  "textContent": "A rubber composition for use in a tread of a pneumatic tire is disclosed. The rubber composition comprises, based on 100 parts by weight of elastomer (phr), (A) from 40 to 90 phr of a solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) in a range of from -65 °C to -55 °C; (B) from 60 to 10 phr of polybutadiene having a cis 1,4 content greater than 95 percent and a Tg in a range of from -80 °C to -110 °C; and (C) from 45 to 65 phr of a hydrocarbon resin having a Tg in a range of from -40 °C to 20°C; (D) less than 10 phr of oil; and (E) from 120 to 160 phr of silica; wherein the total amount of resin and oil is less than 70 phr, and wherein the weight ratio of silica to resin is greater than 2.",
  "title": "RUBBER COMPOSITION AND PNEUMATIC TIRE"
}