Vulcanizable rubber composition for treads of vehicle tires
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United States of America Patent
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-
Oct 22, 2002
Grant Date -
Feb 14, 2002
app pub date -
Aug 31, 2001
filing date -
Jul 14, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A vulcanizable rubber composition is described comprising a cross-linkable unsaturated chain polymeric base, wherein is incorporated at least one organic compound, solid at room temperature, selected from the group comprising: amorphous or semicrystalline polymers, oligomers, low-molecular weight organic substances and mixtures thereof, which compound is substantially insoluble in the polymeric base and shows a first or second order transition temperature of from 80 to 160.degree. C. Such rubber composition allows the manufacture of treads with either a low rolling resistance at the temperature of normal use of the tire (40.degree.-70.degree. C.), or a high grip when the tread is subjected to thermal stresses exceeding such temperatures.
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