Rubber compositions

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1991-10-07

1993-11-23

Michl, Paul R.

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...

524495, 524847, C08K 304

Patent

active

052645215

ABSTRACT:
A rubber composition comprises natural rubber and/or a diene based synthetic rubber, and carbon black. The carbon black has characteristics that a line-width .DELTA.H (mT) in an electron spin resonance (ESR) satisfies .DELTA.H(mT).gtoreq..sub.e 0.11T-7.56+5 in which T is a colored transmittance (%) falling in a range of 100-60%, and an N.sub.2 SA value of the carbon black is not less than 114 m.sup.2 /g to 250 m.sup.2 g.

REFERENCES:
patent: 4075160 (1978-02-01), Mills et al.
patent: 4228143 (1980-10-01), Cheng et al.
patent: 4503027 (1985-03-01), Cheng
patent: 4548980 (1985-10-01), Nagata

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