Poly(vinyl alcohol) resin
AssigneeSekisui Chemical Co., Ltd.
InventorsYuki Ishikawa, Masumi Fujita, Shizuka Sugihara
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Abstract
The present invention provides a polyvinyl alcohol resin with which a polyvinyl acetal resin having a controlled particle size and forming less lumps during dissolution to exhibit excellent solubility can be produced. Provided is a polyvinyl alcohol resin containing: methyl acetate; a vinyl alcohol unit; and a vinyl acetate unit, the methyl acetate being contained in an amount of 0.05 to 3% by weight, the vinyl alcohol unit being contained in an amount of 80 to 99.5 mol %, the vinyl acetate unit having a mean chain length LA of 1 to 4.5, the vinyl alcohol unit having a mean chain length LO of 1 to 30.
Claims4
A polyvinyl alcohol resin comprising:
- methyl acetate;
- a vinyl alcohol unit;
- and
- a vinyl acetate unit,
- the methyl acetate is contained in an amount of 0.05 to 3% by weight, the vinyl alcohol unit is contained in an amount of 80 to 99.5 mol %, the vinyl acetate unit has a mean chain length LA of 1 to 4.5, the vinyl alcohol unit has a mean chain length LO of 1 to 30.
Dependencies are inferred from the claim text.