{
  "$type": "site.standard.document",
  "description": "A pneumatic tire which is improved in durability to a large extent is provided. In the pneumatic tire described above, a rubber layer (A) is disposed as an inner liner at an innermost layer side of the tire, and a rubber layer (B) disposed between the above inner liner and a carcass ply layer and…",
  "path": "/patents/943853",
  "publishedAt": "2016-05-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0008",
    "BRIDGESTONE CORP [JP]"
  ],
  "textContent": "A pneumatic tire which is improved in durability to a large extent is provided. In the pneumatic tire described above, a rubber layer (A) is disposed as an inner liner at an innermost layer side of the tire, and a rubber layer (B) disposed between the above inner liner and a carcass ply layer and adjacent to the above inner liner comprises a rubber composition containing a natural rubber alone or a natural rubber and a synthetic diene rubber as a rubber component, wherein the rubber layer (A) contains a butyl rubber alone or a blend rubber of a diene rubber and a specific amount of a butyl rubber as a rubber component; the rubber layer (B) contains a bismaleimide compound as a cross-linking agent, sulfur and a vulcanization accelerator; a blend amount of the sulfur and a blend amount of the vulcanization accelerator are modified to specific ranges; and an elongation at break after subjected to air heat aging at 100°C for 250 hours is 150% or more.",
  "title": "PNEUMATIC TYRE"
}