Vinyl resin production method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9751963
APP PUB NO 20170029540A1
SERIAL NO

15302281

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A dispersion stabilizer in the present invention contains an aqueous emulsion (a) obtained by dispersing a polymer (A) having an ethylenically unsaturated monomer unit in an aqueous medium, a PVA (B) having a degree of saponification of 65 mol % or more and less than 82 mol % and a viscosity-average degree of polymerization of 250 or more and less than 1500, and a PVA (C) having a degree of saponification of 82 mol % or more and less than 98 mol % and a viscosity-average degree of polymerization of 1500 or more and less than 4000. The dispersion stabilizer contains: 7 to 51 mass % of the polymer (A); 40 to 84 mass % of the PVA (B); and 9 to 53 mass % of the PVA (C), with respect to a total amount of the polymer (A), the PVA (B), and the PVA (C). A vinyl resin satisfying required performance can be obtained using the dispersion stabilizer.

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Patent Owner(s)

Patent OwnerAddress
KURARAY CO LTDKURASHIKI-CITY OKAYAMA PREFECTURE 710

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuhara, Tadahito Kurashiki, JP 23 36
Hartmann, Dirk Hattersheim am Main, DE 53 249
Kumaki, Yosuke Kurashiki, JP 18 47
Michel, Samuel Hattersheim am Main, DE 8 22

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