Rubber composition

Details Rubber composition Rubber composition

1994-12-29

1996-04-16

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...

524492, 524493, 525237, C08K 336, C08K 304, C08F 454

Patent

active

055083366

ABSTRACT:
A rubber composition which comprises: a rubber material comprising a polymer which is selected from a conjugated diene polymer and a vinyl aromatic hydrocarbon-conjugated diene copolymer and contains a low molecular weight polymer component and a high molecular weight polymer component, and at least one of carbon black and white carbon. The low molecular weight polymer component and the high molecular weight polymer component each have a linear structure, a number-average molecular weight in respective specified range, and a molecular weight distribution in respective specified range. The polymer has a total molecular weight distribution in which at least two peaks are present. The low molecular weight polymer component and the high molecular weight polymer component are comprised in the polymer in specified amounts. The rubber composition is advantageously used as tire tread rubber and is excellent in low hysteresis loss property, fracture properties and processability.

REFERENCES:
patent: 5034465 (1991-07-01), Yagi et al.
patent: 5260370 (1993-11-01), Kang et al.
patent: 5272203 (1993-12-01), Joyner et al.
Duck et al., "The Effect of Molecular Weight Distribution on the Tensile Poperties of Solution SBR", In: The International Rubber Conference (Brighton, England), vol. 11, p. 33-1 (1977).

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