{
  "$type": "site.standard.document",
  "description": "A rubber composition is disclosed comprising, based on 100 parts by weight of elastomer (phr): at least three diene elastomers each being a different rubber material, the elastomers comprising: (a) polybutadienes comprising: (i) a majority portion of a first polybutadiene synthesized with a…",
  "path": "/patents/1396461",
  "publishedAt": "2026-03-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/00",
    "GOODYEAR TIRE & RUBBER [US]"
  ],
  "textContent": "A rubber composition is disclosed comprising, based on 100 parts by weight of elastomer (phr): at least three diene elastomers each being a different rubber material, the elastomers comprising: (a) polybutadienes comprising: (i) a majority portion of a first polybutadiene synthesized with a lanthanide series catalyst, the first polybutadiene having a first Mooney viscosity; (ii) a minority portion of a second polybutadiene synthesized with a Nickel-based catalyst, the second polybutadiene having a Mooney viscosity within ± 5 MU of the Mooney viscosity of the first polybutadiene; (b) a synthetic polyisoprene; wherein each of the at least three elastomers has a cis content of greater than 80 percent or greater than 90 percent.",
  "title": "TIRE RUBBER COMPOSITION FOR HEAVY LOAD VEHICLE"
}