US 6,982,297 B2 | ||
Polyvinyl alcohol film and polarizing film | ||
Tetsushi Hayashi, Kurashiki (Japan); Takanori Isozaki, Kurashiki (Japan); and Naoki Fujiwara, Kurashiki (Japan) | ||
Assigned to Kuraray Co., Ltd., Kurashiki (Japan) | ||
Filed on Dec. 12, 2002, as Appl. No. 10/317,123. | ||
Claims priority of application No. 2001-382960 (JP), filed on Dec. 17, 2001. | ||
Prior Publication US 2003/0114566 A1, Jun. 19, 2003 | ||
Int. Cl. C08K 5/05 (2006.01) |
U.S. Cl. 524—386 | 13 Claims |
1. A polyvinyl alcohol film of a vinyl alcohol polymer that contains from 0.01 to 20 mol % of cationic group-containing units, from 0.5 to 24 mol % of α-olefin units having at most 4 carbon atoms and from 1 to 30 parts by weight, based on 100 parts by weight of the vinyl alcohol polymer, of a polyhydric alcohol, and wherein the thickness of the polyvinyl alcohol film ranges from 20 to 100 μm. |