Addition of salts to improve the interaction of silica with rubb

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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524492, 524493, 524262, 423331, 423332, 423333, C08K 336, C01B 3318

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active

058721762

ABSTRACT:
Incorporation of neutral water soluble inorganic salts into a precipitated silica improves the filler dispersion in a compounded rubber, reduces rolling resistance (hysteresis), and improves processability. These properties are achieved without loss of the expected reinforcement effect due to the substitution of inorganic salt for SiO.sub.2 in the silica. The properties are seen when a variety of silanes and processing aids are added to the silica.

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