{
  "$type": "site.standard.document",
  "description": "The present invention provides a rubber composition, in which abrasion resistance and gripping performance are improved in a balanced manner and bleeding of the components is inhibited, and a tire using the composition. Specifically, the present invention provides a rubber composition comprising…",
  "path": "/patents/1071150",
  "publishedAt": "2006-01-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0016",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "The present invention provides a rubber composition, in which abrasion resistance and gripping performance are improved in a balanced manner and bleeding of the components is inhibited, and a tire using the composition. Specifically, the present invention provides a rubber composition comprising (B) 10 to 200 parts by weight of a low molecular weight aromatic vinyl-conjugated diene copolymer having weight average molecular weight of 1.0 × 10to 1.0 × 10and aromatic vinyl content of 10 to 75 % by weight, wherein the hydrogenation ratio of double bonds in the conjugated diene part is 20 to 60 %, based on (A) 100 parts by weight of a rubber component containing at least 60 % by weight of a styrene-butadiene copolymer having weight average molecular weight of 5.0 × 10to 2.5 × 10and styrene content of 20 to 60 % by weight, wherein the amount of vinyl bonds in the butadiene part is 20 to 70 %; which satisfies the following equation 5 % by weight < Bv < (As + 10 % by weight) when As (% by weight) is the styrene content of copolymer (A) and Bv (% by weight) is the aromatic vinyl content in the butadiene part of copolymer (B), and a tire using the same.",
  "title": "Rubber composition and tire using the same"
}