{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "The present invention provides a rubber composition for a tread, in which both wet grip performance and low heat generating properties can be achieved while maintaining the excellent properties of epoxidized natural rubber such as mechanical properties and abrasion resistance, and a pneumatic tire…",
  "path": "/patents/1081739",
  "publishedAt": "2004-12-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0016",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "The present invention provides a rubber composition for a tread, in which both wet grip performance and low heat generating properties can be achieved while maintaining the excellent properties of epoxidized natural rubber such as mechanical properties and abrasion resistance, and a pneumatic tire using the rubber composition. Specifically, the present invention relates to a rubber composition for a tread comprising 5 to 150 parts by weight of silica having nitrogen-adsorbing specific surface area of 100 to 300 m/g and/or carbon black having nitrogen-adsorbing specific surface area of 70 to 300 m/g, based on 100 parts of a rubber component containing 5 to 100 % by weight of a modified epoxidized natural rubber obtained by reacting epoxidized natural rubber with a compound selected from the group consisting of a Lewis acid, an amine compound, a thiol compound, an amide compound and an imidazole compound to conduct ring opening of an epoxy group, and a pneumatic tire comprising the rubber composition for a tread.",
  "title": "Rubber composition for tread and pneumatic tire using the same"
}