| US 7,544,414 B2 | ||
| Oriented syndiotactic polystyrene-base film | ||
| Masayuki Tsutsumi, Ohtsu (Japan); Hisato Kobayashi, Ohtsu (Japan); Keizo Kawahara, Ohtsu (Japan); Shigeto Yoshida, Ohtsu (Japan); Shinsuke Yamaguchi, Ohtsu (Japan); Kazutake Okamoto, Ohtsu (Japan); Akira Takahashi, Ohtsu (Japan); Eiji Kumagai, Ohtsu (Japan); Akinobu Nagara, Ohtsu (Japan); Yoshiko Akitomo, Ohtsu (Japan); Kazumoto Imai, Inuyama (Japan); and Naonobu Oda, Inuyama (Japan) | ||
| Assigned to Toyo Boseki Kabushiki Kaisha, Osaka-Shi (Japan) | ||
| Appl. No. 10/507,126 PCT Filed May 16, 2003, PCT No. PCT/JP03/06161 § 371(c)(1), (2), (4) Date Aug. 09, 2005, PCT Pub. No. WO03/097354, PCT Pub. Date Nov. 27, 2003. |
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| Claims priority of application No. 2002-143488 (JP), filed on May 17, 2002. | ||
| Prior Publication US 2006/0035096 A1, Feb. 16, 2006 | ||
| Int. Cl. B32B 27/18 (2006.01); B32B 27/30 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01) | ||
| U.S. Cl. 428—343 [428/355 EN; 428/355 CN; 428/355 AC; 428/355 N; 428/424.2; 428/424.7; 428/424.8; 428/473.5; 428/476.3; 428/476.9; 428/480; 428/483; 428/484.1; 428/500; 428/515; 428/516; 428/520; 428/522; 428/523] | 10 Claims |
| 1. An oriented syndiotactic polystyrene-based film, comprising a film consisting of a styrene-based polymer having a syndiotactic
structure, and a laminated adhesiveness-improving layer on at least one side of said film, wherein said layer comprises one
or more of the following resins (A)-(H):
(A) a water-dispersible polymer made by copolymerizing a monomer having an aromatic ring on its side chain with an acrylic
monomer;
(B) a water-dispersible copolymerized polyester having a glass transition temperature of 30° C. or less, and/or a water-dispersible
copolymerized polyester satisfying the following (1):
(1) a ratio of B/(A+B) is 0.07 to 0.25, wherein A and B are the integrated values at chemical shifts of 1.0 ppm to 6.0 ppm
and 7.0 ppm to 9.0 ppm, respectively, in 1H NMR;
(C) a water-soluble and/or a water-dispersible polyurethane resin;
(D) a water-soluble and/or a water-dispersible polyamide resin;
(E) a water-dispersible polyacrylonitrile resin;
(F) a water-dispersible ethylene-vinyl ester copolymer resin;
(G) a water-dispersible modified polyolefinic resin; and
(H) a copolymer resin having an isobutylene unit, a maleic acid unit, and a n-butyl acrylate unit;
wherein said adhesiveness-improving layer comprises a polymer comprising a polystyrene sulfonate salt as a major component.
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