Heterogeneous silica carbon black-filled rubber compound

Details Heterogeneous silica carbon black-filled rubber compound Heterogeneous silica carbon black-filled rubber compound

C - Chemistry, Metallurgy

08

K

C08K 3/00 (2006.01) B29B 7/00 (2006.01) B29B 7/90 (2006.01) C08J 3/20 (2006.01) C08J 3/22 (2006.01) C08K 3/04 (2006.01) C08K 3/36 (2006.01) C08K 5/54 (2006.01) C08L 21/00 (2006.01) B29C 47/00 (2006.01)

Patent

CA 2168700

The present invention relates to a heterogeneous silica/carbon black-filled rubber compound and a process for making the same. The process comprises (a) intimately dispersing substantially all of the silica filler in a first rubber to form a silica- filled compound; (b) separately intimately dispersing the majority of carbon black in a second rubber, which is different from said first rubber, to form a carbon black-filled compound; and (c) mixing said silica-filled compound with said carbon black-filled compound to form a heterogeneous silica/carbon black-filled rubber compound.

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