Heterogeneous silica carbon black-filled rubber compound

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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152209R, 524573, 524575, 5245755, C08K 304, C08L 700

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active

056961979

ABSTRACT:
The present invention relates to a heterogeneous silica/carbon black-filled rubber compound and a process for making the same. The rubber compound is characterized by containing silica, two different carbon blacks and two different rubbers. One of the carbon blacks is selectively dispersed in one rubber along with the silica and the other carbon black is dispersed in another rubber. The two rubber compounds are then mixed to form a heterogeneous rubber compound.

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Lee, B L, "Controlled Ingredient-Distribution Mixing: Effect on Some Properties of Elastomer Blend Compounds," American Chemical Society (1984), 12, p. 186.
Sircar, A K, et al, "Carbon Black Transfer in Blends of Cis-Poly(Butadiene) with Other Elastomers," RC&T (1973), 46, pp. 178 and 190.
Lee, B L, "Experimental Studies of the Relationship of Processing to the Crack Growth of Carbon-Black-Loaded SBR--cis-Polybutadiene Compounds," Journal of Applied Polymer Science, vol. 27, pp. 3379-3392 (1982).

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