TERMINAL BORINIC ACID GROUP-MODIFIED POLYMER, METHOD OF MANUFACTURING THE SAME AND RUBBER COMPOSITION CONTAINING THE SAME
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United States of America Patent
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Issued Date -
Nov 5, 2015
app pub date -
Dec 6, 2013
filing date -
Dec 6, 2012
priority date (Note) -
Abandoned
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Abstract
Provided is a terminal borinic acid group-modified polymer having a borinic acid group at least at a molecular terminus thereof, comprising a polymer of at least one of a styrene monomer and a diene monomer. The above terminal borinic acid group-modified polymer may be manufactured by performing a polymerization reaction of at least one of a styrene monomer and a diene monomer in the presence of an anionic polymerization initiator, and then adding a cyclic boronic anhydride to quench the polymerization reaction. When the resulting terminal borinic acid group-modified polymer is added to a silica-containing rubber composition for automobile pneumatic tires as a component thereof, the dispersibility of silica compounded therein can be improved, fully achieving a performance of a good balance between reduced rolling resistance inherent in silica and stability on a wet road.
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