{
  "$type": "site.standard.document",
  "description": "A pneumatic tire comprising a tread, the tread comprising a tread cap layer (2), a tread base layer (4), and a tread underlayer (3) disposed between the tread cap layer (2) and the tread base layer (4) is disclosed. The tread cap layer (2) comprises a rubber composition comprising 100 part by…",
  "path": "/patents/985843",
  "publishedAt": "2013-03-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0016",
    "GOODYEAR TIRE & RUBBER [US]"
  ],
  "textContent": "A pneumatic tire comprising a tread, the tread comprising a tread cap layer (2), a tread base layer (4), and a tread underlayer (3) disposed between the tread cap layer (2) and the tread base layer (4) is disclosed. The tread cap layer (2) comprises a rubber composition comprising 100 part by weight, per 100 parts by weight of rubber (phr) of a rubber comprising from 52 to 64 phr of a polyisoprene rubber, from 22 to 27 phr of a polybutadiene rubber, and from 13 to 21 phr of a styrenebutadiene rubber; and 47 to 57 phr of carbon black. The tread underlayer (3) comprises a rubber composition comprising 100 phr of a rubber comprising from 71 to 86 phr of a polyisoprene rubber and from 14 to 29 phr of a polybutadiene rubber; from 19 to 23 phr of silica; and from 29 to 36 phr of carbon black.",
  "title": "Pneumatic tire"
}