Oblon, McClelland, Maier & Neustadt, L.L.P.
Modified polyvinyl alcohol and water-soluble film containing same
Modified polyvinyl alcohol contains a (meth)acrylamide monomer unit having an ionic group, wherein the modified polyvinyl alcohol has a degree of saponification of from 50 to 99.99 mol % and a viscosity-average degree of polymerization of from 200 to 5000 and satisfies formulae (1) to (3) below. The modified polyvinyl alcohol thus obtained is particularly excellent in dispersibility in water. 0.8≤(MwUV/MwRI)≤1.3  (1)1≤(MwUV/MnUV)≤7  (2)0.03≤A280≤0.5  (3).
KURARAY CO., LTD.
C C A C C C C A C C C C
C08F C08F A01N C08F C08F C08F C08J A01N C08J C08J C11D C11D
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Yoko Masaki
Mori Kato