{
  "$type": "site.standard.document",
  "description": "The present invention relates to a process of producing a rubber composition containing a rubber component (R) containing emulsion-polymerized styrene-butadiene copolymer rubber containing from 0 to 3.5 parts by mass of an organic acid per 100 parts by mass of the emulsion-polymerized…",
  "path": "/patents/942286",
  "publishedAt": "2016-06-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B29B7/002",
    "BRIDGESTONE CORP [JP]"
  ],
  "textContent": "The present invention relates to a process of producing a rubber composition containing a rubber component (R) containing emulsion-polymerized styrene-butadiene copolymer rubber containing from 0 to 3.5 parts by mass of an organic acid per 100 parts by mass of the emulsion-polymerized styrene-butadiene copolymer rubber, a filler containing an inorganic filler (T), a silane coupling agent (U), and at least one vulcanization accelerator (V) selected from a guanidine compound, a sulfenamide compound and a thiazole compound, the process comprising three or more steps of kneading the rubber composition, the rubber component (R), the whole or a part of the inorganic filler (T) and the whole or a part of the silane coupling agent (U) being added and kneaded in a first step (X) of kneading, the vulcanization accelerator (V) being added and kneaded in a step (Y) that is a second or later step before a final step, and a vulcanizing agent being added and kneaded in the final step (Z).",
  "title": "RUBBER COMPOSITION AND TIRE PRODUCED USING SAME, AND PROCESS OF PRODUCING RUBBER COMPOSITION"
}