{
  "$type": "site.standard.document",
  "description": "A pneumatic tire (1) comprising a tread with a tread cap (2) and a tread base (3) in a tread base to tread cap volume ratio ranging from 0.25 to 1; the tread cap (2) comprising, based on 100 parts by weight rubber (phr) 100 phr of cis 1,4 polyisoprene natural rubber; from 25 to 50 phr of carbon…",
  "path": "/patents/1081171",
  "publishedAt": "2004-12-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0016",
    "GOODYEAR TIRE & RUBBER [US]"
  ],
  "textContent": "A pneumatic tire (1) comprising a tread with a tread cap (2) and a tread base (3) in a tread base to tread cap volume ratio ranging from 0.25 to 1; the tread cap (2) comprising, based on 100 parts by weight rubber (phr) 100 phr of cis 1,4 polyisoprene natural rubber; from 25 to 50 phr of carbon black; and from 8 to 35 phr of silica; the tread base comprising 100 phr of cis 1,4 polyisoprene natural rubber; from 25 to 50 phr of carbon black; and from 8 to 35 phr of silica; wherein the tread cap has a stiffness greater than that of the tread base.",
  "title": "Truck wire with cap/base construction tread"
}