{
  "$type": "site.standard.document",
  "description": "A method for producing a natural rubber master batch, which comprises a step for mixing a natural rubber latex with an aqueous slurry having been dispersed with at least one filler selected from the group consisting of carbon black, silica and an inorganic filler represented by the following…",
  "path": "/patents/1071731",
  "publishedAt": "2005-12-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/00",
    "BRIDGESTONE CORP [JP]"
  ],
  "textContent": "A method for producing a natural rubber master batch, which comprises a step for mixing a natural rubber latex with an aqueous slurry having been dispersed with at least one filler selected from the group consisting of carbon black, silica and an inorganic filler represented by the following Formula I: nM•xSiOy•zH2O wherein M is at least one member selected from the group consisting of metals of aluminium, magnesium, titanium, calcium and zirconium, oxides of the preceding metals, hydroxides of the preceding metals, hydrates of the preceding oxides and hydroxides, and carbonates of the preceding metals; n is an integer of 1 to 5; x is an integer of 0 to 10; y is an integer of 2 to 5; and z is an integer of 0 to 10; wherein (i) the particle size distribution of the filler in the aqueous slurry is 25 mu m or less in terms of a volume average particle size (mv) and 30 mu m or less in terms of a 90 volume % particle size (D90), and (ii) a 24M4DBP absorption of dried filler recovered from the aqueous slurry is maintained at 93% or more of that of the filler before being dispersed into water.",
  "title": "Natural rubber master batch, production method thereof, and natural rubber composition"
}