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    Highly crystalline polypropylene film for packaging purposes
    136.
    发明申请
    Highly crystalline polypropylene film for packaging purposes 审中-公开
    高结晶聚丙烯薄膜用于包装用途

    公开(公告)号：US20040197584A1

    公开(公告)日：2004-10-07

    申请号：US10415090

    申请日：2003-10-14

    Inventor： Michael Jeschke

    IPC: B32B027/00

    CPC classification number: C08J5/18 ,  B32B27/32 ,  C08J2323/12 ,  C08L23/12 ,  C08L45/00 ,  C08L57/02 ,  C08L2201/14 ,  C08L2205/02 ,  C08L2205/03 ,  Y10T428/31855 ,  Y10T428/31909 ,  C08L2666/02

    Abstract: There is described a substantially planar, self supporting, sheet or film (optionally oriented) which comprises at least one layer comprising a first material which is highly crystalline polymer (preferably polypropylene of 99% or greater isotacity) together with at least two second material in an amount sufficient to improve one or more of the barrier properties, mechanical properties and/or optical properties of the sheet. The second material comprises a (a) nucleating agent; (b) a polymeric material having a ring and ball softening point from about 110null C. to about 170null C. and/or (c) a hydrogenated resin such as dicyclopentadiene hydrogenated resin, a hydrogenated mixed monomer resin; and/or a resin obtainable from a mixture of null-methyl styrene, indene and/or vinyl toluene momomers. Processes for making such films and compositions for use in the process are also described. Such films are useful in shrink wrap applications for example wrapping tobacco products.

    Abstract translation: 描述了一种基本上平面的，自支撑的，片状或薄膜（任选定向的），其包括至少一层，其包含第一材料，其是高度结晶的聚合物（优选具有99％或更高等渗性的聚丙烯）以及至少两种第二材料 足以改善片材的一种或多种阻隔性能，机械性能和/或光学性能的量。 第二种材料包括（a）成核剂; （b）具有环球软化点约110℃至约170℃的聚合物材料和/或（c）氢化树脂如二环戊二烯氢化树脂，氢化混合单体树脂; 和/或可由α-甲基苯乙烯，茚和/或乙烯基甲苯单体的混合物获得的树脂。 还描述了制备用于该方法的这种膜和组合物的方法。 这种膜可用于例如包装烟草制品的收缩包装应用中。

    Compatible blend systems of oxygen barrier polymers and oxygen scavenging polymers
    138.
    发明申请
    Compatible blend systems of oxygen barrier polymers and oxygen scavenging polymers 失效
    氧隔离聚合物和除氧聚合物的兼容混合体系

    公开(公告)号：US20020002238A1

    公开(公告)日：2002-01-03

    申请号：US09800418

    申请日：2001-03-06

    Inventor： Raymond Laplante ,  Hu Yang ,  Ta Yen Ching ,  Gangfeng Cai

    IPC: C08L001/00

    CPC classification number: C08L23/08 ,  C08L9/02 ,  C08L23/0823 ,  C08L27/08 ,  C08L29/04 ,  C08L67/00 ,  C08L67/02 ,  C08L77/00 ,  C08L2201/14 ,  Y10T428/31725 ,  Y10T428/31855 ,  C08L2666/18 ,  C08L2666/20 ,  C08L2666/04 ,  C08L2666/14 ,  C08L2666/02

    Abstract: Herein is disclosed an oxygen barrier composition comprising an oxygen barrier polymer and an oxygen scavenging polymer. The composition can be in the form of a physical blend or a cross-linked blend, and can further comprise a compatibilizer, a transesterification catalyst, or both. Preferably, the oxygen barrier polymer is poly(ethylene/vinyl alcohol) (EVOH), polyethylene terephthalate (PET), or polyamide other than MXD6. Preferably, the oxygen scavenging polymer comprises an ethylenic backbone and a pendant cyclic olefinic group, or the oxygen scavenging polymer is a polyamide derived at least in part from a xylene diamine-based monomer. The oxygen barrier composition can be formed into an oxygen barrier layer of a packaging article. Such layers and articles, and methods for making same, are also disclosed.

    Abstract translation: 本文公开了包含氧阻隔聚合物和除氧聚合物的氧阻隔组合物。 组合物可以是物理共混物或交联共混物的形式，并且还可以包含增容剂，酯交换催化剂或二者。 优选地，阻氧聚合物是除了MXD6以外的聚（乙烯/乙烯醇）（EVOH），聚对苯二甲酸乙二醇酯（PET）或聚酰胺。 优选地，除氧聚合物包含烯属主链和侧链环烯基，或除氧聚合物是至少部分由二甲苯二胺基单体衍生的聚酰胺。 氧阻隔组合物可以形成为包装制品的氧阻隔层。 还公开了这样的层和制品及其制造方法。

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