Rubber powders and process for production thereof

Details Rubber powders and process for production thereof Rubber powders and process for production thereof

C - Chemistry, Metallurgy

08

J

C08J 3/215 (2006.01) C08C 1/00 (2006.01) C08C 2/00 (2006.01) C08K 3/04 (2006.01) C08K 3/34 (2006.01) C08K 9/06 (2006.01) C08L 21/00 (2006.01)

Patent

CA 2292404

This invention relates to finely-divided, pulverulent rubbers containing filler and which contain further processing and vulcanisation auxiliaries necessary for the production of vulcanisable rubber mixtures, which rubbers are pourable even after exposure to mechanical stress; to a process for the production thereof, in which the rubber powder is obtained within two precipitation steps; and to the use of these powders for the production of vulcanisable rubber mixtures. The fillers used, which comprise not only precipitated silicas but also carbon blacks known in the rubber sector, are optionally surface-modified with organosilicon compounds, especially with regard to the silicas.

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