{
  "$type": "site.standard.document",
  "description": "The present invention aims to provide a lightweight tire without decreasing durability and to reduce rolling resistance and improve steering stability of the tire. Specifically, the present invention relates to a rubber composition for a sidewall comprising 20 to 70 parts by weight of an inorganic…",
  "path": "/patents/1083203",
  "publishedAt": "2004-10-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/00",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "The present invention aims to provide a lightweight tire without decreasing durability and to reduce rolling resistance and improve steering stability of the tire. Specifically, the present invention relates to a rubber composition for a sidewall comprising 20 to 70 parts by weight of an inorganic filler, and 5 to 35 parts by weight of polypropylene powder, based on 100 parts by weight of a rubber component, which satisfies the following equation: (amount of polypropylene powder) ≤ (amount of inorganic filler + amount of polypropylene powder) / 2.",
  "title": "Rubber composition for sidewall and pneumatic tire using the same"
}