Polyvinyl acetal microparticles for water-based dispersion

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United States of America Patent

PATENT NO 9505865
SERIAL NO

14431321

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Abstract

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The present invention provides polyvinyl acetal fine particles for an aqueous dispersion which exhibit excellent dispersion stability in a water-containing dispersion medium, and allow for formation of a film having sufficient mechanical strength and flexibility without voids and non-uniform structures such as irregularities, and an aqueous dispersion of the polyvinyl acetal fine particles for an aqueous dispersion. The polyvinyl acetal fine particles for an aqueous dispersion, adapted for use as dispersoids in an aqueous dispersion, the polyvinyl acetal fine particles including a polyvinyl acetal resin with an ionic functional group, and having a volume average particle size of 10 nm to 100 μm, and a CV value of a volume-based particle size distribution of at most 40%.

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Patent Owner(s)

  • SEKISUI CHEMICAL CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagai, Yasuharu Osaka, JP 21 55

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