{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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    "size": 75463
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  "description": "Provided is a tire () including a tread rubber layer () located at the outermost surface of a tread portion (), and a reinforcing layer that is located inward thereof in the tire radial direction and includes an organic fiber cord. The tread rubber layer () includes a rubber component, a resin…",
  "path": "/patents/1385477",
  "publishedAt": "2026-06-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C08L15/00",
    "BRIDGESTONE CORPORATION"
  ],
  "textContent": "Provided is a tire () including a tread rubber layer () located at the outermost surface of a tread portion (), and a reinforcing layer that is located inward thereof in the tire radial direction and includes an organic fiber cord. The tread rubber layer () includes a rubber component, a resin component, and a filler. The rubber component includes an isoprene skeleton rubber and a styrene-butadiene rubber. At least one type of the styrene-butadiene rubber has a glass transition temperature of less than −40° C. The resin component has a difference of the SP value relative to that of the isoprene skeleton rubber of 1.40 (cal/cm)or less. The tread rubber layer () satisfies the formula: mass ratio of resin component/isoprene skeleton rubber≥0.5. The organic fiber cord has an elastic modulus at 1-2% elongation of 4.0 to 30 mN/(dtex·%).",
  "title": "TIRE"
}