| 摘要 |
The invention provides the use of a particulate kaolin clay which: (i) has a particle size distribution such that at least about 95% by volume of the particles have a particle diameter less than 3 mum, and/or (ii) is selected from a particulate soak calcined kaolin, a particulate flash calcined kaolin, and any mixture thereof; as a filler, optionally in combination with silica and/or carbon black and/or other particulate filler, in a rubber composition, more particularly a truck or passenger tyre tread rubber composition.
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