Processability of silica-filled rubber stocks with reduced hysteresis
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United States of America Patent
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Apr 9, 2002
Grant Date -
Jul 26, 2001
app pub date -
Jul 11, 1997
filing date -
Jul 11, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A processable rubber stock is produced by the preparation of a silica-filled, vulcanized elastomeric compound comprising mixing an elastomer with an amorphous silica filler, a processing aid comprising fatty acid ester of a polyol, optionally an additional mineral filler, and a cure agent. The elastomer is preferably a diene monomer homopolymer or a copolymer of at least one diene and at least one monovinyl aromatic monomer. By effecting vulcanization, a vulcanized elastomeric compound is produced containing good physical properties for use as tread stock for a pneumatic tire.
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