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    Film formed from polyethylene-2,6-naphthalate resin, process for producing said film and package using said film
    1.
    发明授权
    Film formed from polyethylene-2,6-naphthalate resin, process for producing said film and package using said film 有权
    由聚2,6-萘二甲酸乙二醇酯树脂形成的膜，使用所述膜制造所述膜和包装的方法

    公开(公告)号：US5990248A

    公开(公告)日：1999-11-23

    申请号：US149656

    申请日：1998-09-09

    申请人： Shinichiro Mori ,  Katsuhiko Sasada ,  Kayo Hasegawa ,  Yasuhiro Harada ,  Chikao Kumaki ,  Masahisa Yamaguchi ,  Yasuki Suzuura ,  Rikiya Yamashita ,  Toshiyuki Suzuki ,  Isao Inoue

    发明人： Shinichiro Mori ,  Katsuhiko Sasada ,  Kayo Hasegawa ,  Yasuhiro Harada ,  Chikao Kumaki ,  Masahisa Yamaguchi ,  Yasuki Suzuura ,  Rikiya Yamashita ,  Toshiyuki Suzuki ,  Isao Inoue

    IPC分类号： B29C55/00 ,  B32B27/08 ,  B32B27/36 ,  C08G63/20 ,  C08J5/18 ,  C08L67/02 ,  C08F20/00

    CPC分类号： C08J5/18 ,  B29C55/005 ,  B32B27/08 ,  B32B27/36 ,  C08G63/20 ,  C08L67/02 ,  B29K2067/00 ,  C08J2367/02 ,  Y10S428/91 ,  Y10T428/1379 ,  Y10T428/1383 ,  Y10T428/24802 ,  Y10T428/24843 ,  Y10T428/266 ,  Y10T428/269 ,  Y10T428/28 ,  Y10T428/2817 ,  Y10T428/31786

    摘要： The present invention relates to a polyethylene-2,6-naphthalate film comprising a resin composed mainly of polyethylene-2,6-naphthalate and having an intrinsic viscosity .eta. in the range of from 0.31 to 0.6, said film having stretch ratios of 1 to 3 times and 1 to 3 times or 3 to 6 times and 1 to 1.8 times respectively in substantially mutually perpendicular directions and a thickness in the range of from 5 to 150 .mu.m;a polyethylene-2,6-naphthalate resin comprising a blend composed mainly of two components of: a polyethylene-2,6-naphthalate resin having an intrinsic viscosity in the range of from 0.3 to 0.5 dl/g and prepared by an esterification reaction of a dicarboxylic acid having a 2,6-naphthalenedicarboxylic acid content of not less than 90% by mole with a glycol having an ethylene glycol content of not less than 90% by mole, or a transesterification and a polyethylene-2,6-naphthalate resin having an intrinsic viscosity in the range of from 0.5 to 0.7 dl/g and prepared by an esterification reaction of a dicarboxylic acid having a 2,6-naphthalenedicarboxylic acid content of not less than 90% by mole with a glycol having an ethylene glycol content of not less than 90% by mole, or a transesterification, the resin blend having an intrinsic viscosity in the range of from 0.31 to 0.68 dl/g;a modified polyethylene-2,6-naphthalate resin prepared by an esterification reaction of a dicarboxylic acid having a 2,6-naphthalenedicarboxylic acid content of not less than 90% by mole with a hydroxy compound having an ethylene glycol content in the range of from 90 to 99.5% by mole and a content of a compound having three or more ester forming functional groups in the range of from 0.5 to 5% by mole, or a transesterification; andpackaging films or packs produced from these resins.

    摘要翻译： 本发明涉及一种聚2,6-萘二甲酸乙二醇酯薄膜，其包含主要由聚2,6-萘二甲酸二乙酯组成的树脂，其特性粘度η为0.31至0.6，所述薄膜的拉伸比为1至 在大致相互垂直的方向分别为3倍和1至3倍或3至6倍和1至1.8倍，厚度为5至150微米; 包含主要由两种成分组成的共混物的聚2,6-萘二甲酸乙二醇酯树脂：特性粘度在0.3至0.5dl / g范围内的聚2,6-萘二甲酸乙二醇酯树脂，并通过酯化反应 具有不小于90摩尔％的乙二醇含量不低于90摩尔％的2,6-萘二甲酸含量的二羧酸或酯交换反应和聚2,6-萘二甲酸乙二醇酯树脂 其特性粘度范围为0.5〜0.7dl / g，通过2,6-二羧酸含量不小于90％摩尔的二羧酸与乙二醇含量的二醇的酯化反应制得 不低于90摩尔％或酯交换反应，该树脂共混物的特性粘度范围为0.31至0.68dl / g; 通过使2,6-萘二甲酸含量为90％以上的二羧酸与羟乙基酯的酯化反应制备的改性聚2,6-萘二甲酸乙二醇酯，所述羟基化合物的乙二醇含量范围为 90〜99.5摩尔％，含有3个以上酯形成官能团的化合物的含量为0.5〜5摩尔％，或酯交换反应。 以及由这些树脂制成的包装膜或包装。