{
  "$type": "site.standard.document",
  "description": "A rubber composition for a tread of a pneumatic tire is disclosed. The rubber composition comprises: (A) 30 to 70 phr of a first styrene-butadiene rubber, wherein the first styrene-butadiene rubber is a solution-polymerized styrene-butadiene rubber with a Tg of from -40ºC to -20ºC or an…",
  "path": "/patents/1003890",
  "publishedAt": "2012-03-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0016",
    "GOODYEAR TIRE & RUBBER [US]"
  ],
  "textContent": "A rubber composition for a tread of a pneumatic tire is disclosed. The rubber composition comprises: (A) 30 to 70 phr of a first styrene-butadiene rubber, wherein the first styrene-butadiene rubber is a solution-polymerized styrene-butadiene rubber with a Tg of from -40ºC to -20ºC or an emulsion-polymerized styrene-butadiene rubber with a Tg of from -40ºC to -20ºC; (B) 20 to 60 phr of solution-polymerized styrene-butadiene rubber a Tg of from -30ºC to -5ºC; (C) 5 to 20 phr of cis-1,4 polybutadiene having a Tg of from -110ºC to - 90ºC; (D) 30 to 60 phr of processing oil; (E) 5 to 20 phr of carbon black; (F) 80 to 130 phr of silica; (G) 0.5 to 20 phr of a sulfur containing organosilicon compound; and (H) 5 to 20 phr of resin.",
  "title": "Pneumatic tire"
}