Polyalkenyl coupling agent and conjugated diene polymers prepared therefrom

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United States of America Patent

PATENT NO 9951160
SERIAL NO

14712505

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Abstract

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A process is provided for preparing a coupled polymer by anionic polymerization wherein the coupled polymer is a conjugated diene polymer comprising the following reaction steps:

    a) polymerizing a monomer or a mixture of monomers comprising at least one conjugated diene optionally one or more monoalkenyl arene compounds in the presence of an anionic initiator to form a living polymer arm or mixture of arms with an average apparent molecular weight greater than 2000;b) reacting the living polymer arm or arms with a polyalkenyl coupling agent;c) terminating the polymerization if any living polymers remain after step b); andd) optionally functionalizing and/or hydrogenating the coupled polymer so produced,wherein the polyalkenyl coupling agent is an alpha,omega-bis(vinylphenyl)alkane. Also provided is the polymer so prepared and its use in concentrates, aqueous emulsions and products made from aqueous emulsions.

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Patent Owner(s)

  • KRATON POLYMERS U.S. LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
de, Wit Frank Wijnand Houten, NL 1 0
van, der Huizen Adriaan Albert Castricum, NL 6 32

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