{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A polymer composition is provided that is suitable for manufacturing a tire that not only has excellent low-loss properties and wear resistance, but also has an excellent balance of wet grip performance and mechanical characteristics. A polymer composition according to the present invention is…",
  "path": "/patents/1418638",
  "publishedAt": "2023-04-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/00",
    "JSR CORP [JP]"
  ],
  "textContent": "A polymer composition is provided that is suitable for manufacturing a tire that not only has excellent low-loss properties and wear resistance, but also has an excellent balance of wet grip performance and mechanical characteristics. A polymer composition according to the present invention is characterized by containing a diene polymer (A) and a filler (B), the diene polymer (A) containing the polymer (A1) and the polymer (A2) described below. Polymer (A1): A copolymer of a polymer of a conjugate diene compound or the conjugate diene compound, and an aromatic vinyl compound, the copolymer being modified with a polar group having affinity for the filler (B), wherein the aromatic vinyl content is 25 mass% or less, and the modification rate is 30-100%. Polymer (A2): A copolymer of an aromatic vinyl compound and a conjugate diene compound including 1,3-butadiene, wherein the aromatic content is 30-50 mass%, the vinyl content is 5-30 mass%, and the peak molecular weight of the polystyrene equivalent measured using gel permeation chromatography is 400,000 to 2,000,000.",
  "title": "POLYMER COMPOSITION, CROSSLINKED POLYMER, AND TIRE"
}