METHOD FOR PRODUCING HYDROGENATED CONJUGATED DIENE POLYMER LATEX
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United States of America
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Feb 13, 2020
app pub date -
Jan 18, 2018
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Jan 18, 2018
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Abstract
A method for producing a hydrogenated conjugated diene polymer latex includes: a hydrogenation step of dissolving or dispersing a hydrogenation catalyst containing a platinum group element in a latex of a conjugated diene polymer to hydrogenate a carbon-carbon unsaturated bond in the polymer; an insoluble complex formation step of complexing the platinum group element with a complexing agent to form an insoluble complex; and an insoluble complex removing step of continuously feeding the latex which has undergone the insoluble complex formation step to a centrifuge machine and continuously performing a centrifugation operation to continuously remove the insoluble complex from the latex and continuously discharge the insoluble complex out of the centrifuge machine. In the insoluble complex removal step the feed rate of the latex to the centrifuge machine is adjusted to 0.5 to 15 m3/hour, and the centrifugal force in the centrifugation operation is adjusted to 200 to 10,000 G.
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