Vinyl chloride polymer and production method thereof
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United States of America Patent
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Nov 22, 2022
Grant Date -
Nov 12, 2020
app pub date -
Apr 29, 2019
filing date -
Apr 30, 2018
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Abstract
The present invention relates to a vinyl chloride polymer and a production method thereof. More specifically, the present invention provides a vinyl chloride polymer having a polydispersity index of 2.0 to 2.3 and a porosity of 60% or greater and a production method thereof in which a vinyl chloride polymerization seed having a conversion rate of 5-20% is first prepared through preliminary polymerization and then a vinyl chloride monomer is introduced into the vinyl chloride polymerization seed to polymerize (main polymerization) a vinyl chloride polymer.
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