Large-sized vinyl chloride seed, method of preparing the seed, vinyl chloride resin prepared using the seed, and method of preparing the vinyl chloride resin
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United States of America Patent
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Jul 7, 2015
Grant Date -
Nov 20, 2014
app pub date -
Jul 31, 2014
filing date -
Jun 13, 2008
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Abstract
The present invention relates to a large-sized vinyl chloride seed with an average particle size of 0.65 to 1.5 μm, a vinyl chloride resin with improved low-viscosity properties, and preparation methods thereof. The preparation of the large-sized vinyl chloride seed includes adding a vinyl chloride monomer, an emulsifier, and a polymerization initiator to an aqueous medium; homogenizing the mixed solution using a rotor-stator type homogenizer; and subjecting the resultant monomer droplets to a polymerization reaction.
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