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    Polypropylene resin composition and heat-shrinkable film obtained from the same
    1.
    发明申请
    Polypropylene resin composition and heat-shrinkable film obtained from the same 审中-公开
    聚丙烯树脂组合物和由其获得的热收缩膜

    公开(公告)号：US20040010087A1

    公开(公告)日：2004-01-15

    申请号：US10429854

    申请日：2003-05-06

    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

    Inventor： Yoichi Obata ,  Takeshi Ebara

    IPC: C08L023/00 ,  C08L023/04

    CPC classification number: C08J5/18 ,  C08J2323/12 ,  C08L23/12 ,  C08L2205/02 ,  C08L2308/00 ,  C08L2666/06

    Abstract: Disclosed is a polypropylene resin composition containing from 20 to 99.99 parts by weight of a propylene-based polymer (A) having a die swell ratio of less than 1.7 and a melting point defined as a peak temperature of a peak with a maximum intensity in a melting curve measured by DSC of from 125 to 139null C., and from 0.01 to 80 parts by weight of a propylene-based polymer (B) having a die swell ratio of not less than 1.8. This resin composition is suitable as a raw material of a heat-shrinkable film superior in rigidity, heat shrinkage and weld-cut sealability. A heat-shrinkable film obtainable from the resin composition is also disclosed.

    Abstract translation: 公开了一种聚丙烯树脂组合物，其含有20〜99.99重量份的模头溶胀比小于1.7的丙烯类聚合物（A），熔点定义为峰值温度为峰值温度 通过DSC测量的熔融曲线为125至139℃，和0.01至80重量份的模头膨胀比不小于1.8的丙烯基聚合物（B）。 该树脂组合物适合作为刚性，热收缩和焊接密封性优异的热收缩膜的原料。 还公开了可从树脂组合物获得的热收缩膜。

    Propylene-based resin composition and film made of the same
    2.
    发明申请
    Propylene-based resin composition and film made of the same 有权
    丙烯类树脂组合物及其制成的薄膜

    公开(公告)号：US20030220453A1

    公开(公告)日：2003-11-27

    申请号：US10397731

    申请日：2003-03-27

    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

    Inventor： Takeshi Ebara ,  Hideaki Hori

    IPC: C08F008/00 ,  C08L023/00

    CPC classification number: C08J5/18 ,  C08J2323/14 ,  C08L23/142 ,  C08L23/20 ,  C08L2205/02 ,  C08L2308/00 ,  Y10T428/31855 ,  Y10T428/31909 ,  C08L2666/06

    Abstract: Disclosed is a resin composition that comprises a propylene-based copolymer (X) consisting of two kinds of copolymeric components made up of propylene, null-olefin and optionally ethylene which are characterized by ethylene content and null-olefin content, the copolymer (X) exhibiting a specific endothermic behavior in DSC measurement; a crystalline olefin-based polymer (Z) having a melting point up to 115null C.; and optionally a copolymer (Y) made up of propylene and null-olefin and/or ethylene. The resin composition can be modified by addition of a propylene-based polymer (W) and/or a nucleating agent (N) and can yield a film superior in low-temperature heat sealability and antiblocking property.

    Abstract translation: 公开了一种树脂组合物，其包含由丙烯，α-烯烃和任选的乙烯组成的两种共聚物组分的丙烯类共聚物（X），其特征在于乙烯含量和α-烯烃含量，共聚物（X） 在DSC测量中表现出特定的吸热行为; 熔点高达115℃的结晶烯烃基聚合物（Z）; 和任选的由丙烯和α-烯烃和/或乙烯组成的共聚物（Y）。 可以通过添加丙烯类聚合物（W）和/或成核剂（N）来改性树脂组合物，并且可以得到低温热封性和防粘连性优异的膜。

    Stretched polypropylene film
    3.
    发明申请
    Stretched polypropylene film 有权
    拉伸聚丙烯薄膜

    公开(公告)号：US20030144448A1

    公开(公告)日：2003-07-31

    申请号：US10314132

    申请日：2002-12-09

    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

    Inventor： Takeshi Ebara ,  Kazuki Wakamatsu

    IPC: C08L023/00

    CPC classification number: C08J5/18 ,  B29C55/005 ,  B29C55/143 ,  B29K2023/12 ,  C08J2323/14 ,  C08L23/142 ,  C08L2205/02 ,  C08L2666/06

    Abstract: Disclosed is a stretched film excellent in low-temperature heat sealability after corona treatment as well as that before corona treatment and/or in heat shrinkability, the stretched film being comprised of a layer comprising a copolymer of propylene with null-olefin and/or ethylene such that in measurement of a DSC curve the amount of the heat absorbed in the temperature range of from Tnull10 (null C.) to Tnull10 (null C.) accounts for from 15 to 36% of the amount of the heat absorbed in the temperature range of from 53 to 170null C., wherein T denotes a temperature (null C.) at which a maximum endothermic peak appears in the DSC curve.

    Abstract translation: 公开了一种在电晕处理后以及在电晕处理和/或热收缩之前的低温热封性优异的拉伸膜，拉伸膜由包含丙烯与α-烯烃和/或乙烯的共聚物的层组成 使得在DSC曲线的测量中，在T-10（℃）至T + 10（℃）的温度范围内吸收的热量占热量的15至36％ 在53至170℃的温度范围内吸收，其中T表示在DSC曲线中出现最大吸热峰的温度（℃）。

    Propylene-based resin composition and film made of the same
    4.
    发明申请
    Propylene-based resin composition and film made of the same 有权
    丙烯类树脂组合物及其制成的薄膜

    公开(公告)号：US20030220452A1

    公开(公告)日：2003-11-27

    申请号：US10397297

    申请日：2003-03-27

    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

    Inventor： Takeshi Ebara ,  Hideaki Hori

    IPC: C08F008/00 ,  C08L023/00

    CPC classification number: C08J5/18 ,  C08J2323/14 ,  C08L23/142 ,  C08L2205/025 ,  C08L2308/00 ,  Y10T428/31855 ,  Y10T428/31909 ,  C08L2666/06

    Abstract: Disclosed is a resin composition that comprises a propylene-based copolymer (X) consisting of two kinds of copolymeric components made up of propylene, null-olefin and optionally ethylene which are characterized by ethylene content and null-olefin content, the copolymer (X) exhibiting a specific endothermic behavior in DSC measurement and a copolymer (Y) made up of propylene and null-olefin and/or ethylene. The resin composition can afford a film superior in low-temperature heat sealability and antiblocking property.

    Abstract translation: 公开了一种树脂组合物，其包含由丙烯，α-烯烃和任选的乙烯组成的两种共聚物组分的丙烯类共聚物（X），其特征在于乙烯含量和α-烯烃含量，共聚物（X） 在DSC测量中表现出特定的吸热行为，以及由丙烯和α-烯烃和/或乙烯组成的共聚物（Y）。 树脂组合物可以提供低温热封性和防粘连性优异的膜。

    Polypropylene resin composition and film
    7.
    发明申请
    Polypropylene resin composition and film 有权
    聚丙烯树脂组合物和薄膜

    公开(公告)号：US20030187126A1

    公开(公告)日：2003-10-02

    申请号：US10397295

    申请日：2003-03-27

    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

    Inventor： Takeshi Ebara ,  Hideaki Hori

    IPC: C08K003/00

    CPC classification number: C08K5/0083 ,  C08K3/01 ,  C08L23/10

    Abstract: There are provided a polypropylene resin composition comprising: (i) 10 to 99% by weight of a specific propylene copolymer (X), (ii) 0 to 60% by weight of a specific copolymer (Y), and (iii) at least one member selected from the group consisting of 1 to 30% by weight of a specific propylene polymer (W) and 0.1 to 3 parts by weight of a nucleating agent (N); and a film comprising said polypropylene resin composition, or a laminated film having a layer comprising said polypropylene resin composition.

    Abstract translation: 提供了一种聚丙烯树脂组合物，其包含：（i）10至99重量％的特定丙烯共聚物（X），（ii）0至60重量％的特定共聚物（Y），和（iii）至少 一个选自1至30重量％的特定丙烯聚合物（W）和0.1至3重量份成核剂（N）的组分; 以及包含所述聚丙烯树脂组合物的膜或具有包含所述聚丙烯树脂组合物的层的层压膜。

    Polypropylene-based resin composition for stretched film, process for producing the same and stretched film
    8.
    发明申请
    Polypropylene-based resin composition for stretched film, process for producing the same and stretched film 失效
    用于拉伸膜的聚丙烯类树脂组合物，其制造方法和拉伸膜

    公开(公告)号：US20030055173A1

    公开(公告)日：2003-03-20

    申请号：US10098486

    申请日：2002-03-18

    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

    Inventor： Yoichi Obata ,  Shunji Yunoki ,  Takeshi Ebara

    IPC: C08L023/00

    CPC classification number: C08J5/18 ,  C08J2323/10 ,  C08L23/10 ,  C08L2205/02 ,  Y10T428/249921 ,  C08L2666/04

    Abstract: A polypropylene-based resin composition for stretched film, comprising 20 to 98 parts by weight of a propylene-based polymer(A) having an intrinsic viscosity nullnullnullA of 1.8 to 8 dl/g and a melting temperature TmA of 140 to 165 null C. and 2 to 80 parts by weight of a propylene-based polymer(B) having an intrinsic viscosity nullnullnullB of 0.8 to 1.7 dl/g and a melting temperature TmB of 150 to 170null C., wherein the ratio of TmA to TmB is less than 1, the ratio of the intrinsic viscosity nullnullnullA to the intrinsic viscosity nullnullnullB is more than 1 and less than 10, and the melt flow rate of the polypropylene-based resin composition is from 0.1 to 20 g/10 min.

    Abstract translation: 一种聚丙烯系拉伸膜用树脂组合物，其特征在于，粘度ηA为1.8〜8dl / g，熔融温度TmA为140〜165的丙烯系聚合物（A）为20〜98重量份 ℃和2〜80重量份的特性粘度ηB为0.8〜1.7dl / g，熔融温度TmB为150〜170℃的丙烯类聚合物（B），其中， 的TmA与TmB的摩尔比小于1，特性粘度ηA与特性粘度ηB的比大于1且小于10，聚丙烯类树脂组合物的熔体流动速率为 0.1〜20g / 10分钟。

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