Surface-treated carbon black and rubber composition containing s

Details Surface-treated carbon black and rubber composition containing s Surface-treated carbon black and rubber composition containing s

1995-11-02

1997-10-21

Cain, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523210, 523216, 524492, 524493, 524495, 524496, 4234492, 423460, C08K 300

Patent

active

056797281

ABSTRACT:
A rubber composition containing a cross-linkable rubber component and a carbon black having silica adhered to the surface thereof and a silica surface-treated carbon black suitable for use in tire tread where the surface-treated carbon black has a nitrogen specific surface area (N.sub.2 SA) of 20 to 300 m.sup.2 /g, a ratio IA.sub.o /IA.sub.f of the adsorption amount of iodine (IA.sub.o) and the adsorption amount of iodine after treatment by hydrogen fluoride (IA.sub.f) of at least 0.30 but less than 1.0, and a ratio IA.sub.e /IA.sub.ef of the adsorption amount of iodine after extraction from a rubber compound (IA.sub.e) and the value of the same after treatment by hydrogen fluoride (IA.sub.ef) of at least 0.30 but less than 1.0.

REFERENCES:
patent: 5159009 (1992-10-01), Wolff et al.
patent: 5200440 (1993-04-01), Takago et al.

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