Rubber for tire treads and compositions thereof
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United States of America Patent
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May 30, 1989
Grant Date -
N/A
app pub date -
Mar 16, 1987
filing date -
Jan 10, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a rubber-like polybutadiene or a rubber-like butadiene-styrene copolymer suited for use in tire treads which are obtained by polymerization of the monomer(s) in the presence of an organolithium catalyst, followed by reacting a carbodiimide with the reactant product thereof so as to subject it to reaction at its living point, and if necessary, further reacting the product thus obtained with a trifunctional or higher-order coupling agent. The invention further relates to a process for the production thereof, and a rubber composition containing more than a definite amount of said polymer.
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