Pneumatic tire comprising a foamed rubber layer containing a vul

Details Pneumatic tire comprising a foamed rubber layer containing a vul Pneumatic tire comprising a foamed rubber layer containing a vul

1997-07-11

2000-06-13

Henderson, Christopher

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

1522097, C08C 1920, B60C 1100

Patent

active

060750987

ABSTRACT:
A pneumatic tire comprising a tire tread wherein a foamed rubber layer is provided at least in the portion substantially contacting with a road surface, and wherein said foamed rubber layer, which has closed cells, has an expansion ratio of about 2% to about 50%, and the solid rubber phase in said foamed rubber layer contains, in an amount of about 0.5 to about 5 parts by weight per 100 parts by weight of the rubber component, a vulcanization accelerator represented by one of the following general formula: ##STR1## wherein R.sup.1 and R.sup.2 each independently represents an atom or a group selected from a group consisting of a hydrogen atom, alkyl groups, and aryl groups, excluding a case in which each of R.sup.1 and R.sup.2 simultaneously represents a hydrogen atom. The pneumatic tire which is used as an excellent studless tire suppresses deterioration in performance on ice or snow in the final period of tire use compared to the performance in the initial period of tire use.

REFERENCES:
patent: 2955102 (1960-10-01), Clayton
patent: 3086018 (1963-04-01), Hardman
Abstract, (JP 58 087 138 A) Databse WPI, Section Ch, Week 8326, Derwent Publications, Ltd., May 24, 1983.

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