Method of preparing trans polybutadiene blend for use in tires
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United States of America Patent
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May 19, 1998
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N/A
app pub date -
Dec 27, 1996
filing date -
Dec 27, 1996
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Expired
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Abstract
The present invention relates to the utilization of trans 1,4-polybutadiene resin having a melting point of at least 30.degree. C. in rubber compositions. The invention, in one aspect, relates to replacing, or at least partially replacing, natural rubber with a pre-blend of trans 1,4-polybutadiene resin and synthetic cis 1,4-polyisoprene rubber. The invention particularly relates to preparation and utilization of a pre-blend of trans 1,4-polybutadiene resin and synthetic cis 1,4-polyisoprene rubber by blending individual polymerizate cements, drying the pre-blend, and use of such pre-blend in the preparation of rubber compositions and of manufactured products such as, for example, tires.
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