Method for producing hydrogenated conjugated diene polymer latex

  • US 10,968,287 B2
  • Filed: 01/18/2018
  • Issued: 04/06/2021
  • Est. Priority Date: 01/20/2017
  • Status: Active Grant
First Claim
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1. A method for producing a hydrogenated conjugated diene polymer latex comprising:

  • 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 conjugated diene 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;

    wherein 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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