Dienophile additives to polyvinylidene chloride copolymers
    5.
    发明授权
    Dienophile additives to polyvinylidene chloride copolymers 有权
    嗜碱性添加剂到聚偏二氯乙烯共聚物

    公开(公告)号:US06514626B1

    公开(公告)日:2003-02-04

    申请号:US09649895

    申请日:2000-08-28

    IPC分类号: B32B2730

    摘要: A flexible film for packaging articles such as food is provided. The film comprises a layer of polyvinylidene (“PVdC”) homopolymer, polyvinylidene and methyl acrylate (“PVdC-MA”) copolymer or other polyvinylidene chloride copolymer. A dienophile such as, for example, ethyl trans-cinnamate, methyl trans-cinnamate, dibutyl maleate, dimethyl maleate or maleic anhydride is blended with the PVdC polymer or PVdC-MA copolymer to reduce yellowing of the film caused by degradation of the PVdC or PVdC-MA through heat or electron beam irradiation. Preferably a range of about 0.05% and about 5% by weight of the dienophile is added to the PVdC or PVdC-MA.

    摘要翻译: 提供用于包装诸如食品的物品的柔性膜。 该膜包括聚偏二乙烯(“PVdC”)均聚物,聚偏二乙烯基和丙烯酸甲酯(“PVdC-MA”)共聚物或其它聚偏二氯乙烯共聚物层。 将亲二烯体如例如反式肉桂酸乙酯,反式肉桂酸甲酯,马来酸二丁酯,马来酸二甲酯或马来酸酐与PVdC聚合物或PVdC-MA共聚物共混以减少由PVdC或 PVdC-MA通过热或电子束照射。 优选将约0.2重量%至约5重量%的亲二烯体的范围加入到PVdC或PVdC-MA中。

    Dienophile additives to polyvinylidene chloride copolymers
    7.
    发明授权
    Dienophile additives to polyvinylidene chloride copolymers 有权
    嗜碱性添加剂到聚偏二氯乙烯共聚物

    公开(公告)号:US06911242B2

    公开(公告)日:2005-06-28

    申请号:US10341702

    申请日:2003-01-14

    IPC分类号: B32B27/18 B32B27/30 B29D22/00

    摘要: A flexible film for packaging articles such as food is provided. The film comprises a layer of polyvinylidene (“PVdC”) homopolymer, polyvinylidene and methyl acrylate (“PVdC-MA”) copolymer or other polyvinylidene chloride copolymer. A dienophile such as, for example, ethyl trans-cinnamate, methyl trans-cinnamate, dibutyl maleate, dimethyl maleate or maleic anhydride is blended with the PVdC polymer or PVdC-MA copolymer to reduce yellowing of the film caused by degradation of the PVdC or PVdC-MA through heat or electron beam irradiation. Preferably a range of about 0.05% and about 5% by weight of the dienophile is added to the PVdC or PVdC-MA.

    摘要翻译: 提供用于包装诸如食品的物品的柔性膜。 该膜包括聚偏二乙烯(“PVdC”)均聚物,聚偏二乙烯基和丙烯酸甲酯(“PVdC-MA”)共聚物或其它聚偏二氯乙烯共聚物层。 将亲二烯体如例如反式肉桂酸乙酯,反式肉桂酸甲酯,马来酸二丁酯,马来酸二甲酯或马来酸酐与PVdC聚合物或PVdC-MA共聚物共混以减少由PVdC或 PVdC-MA通过热或电子束照射。 优选将约0.2重量%至约5重量%的亲二烯体的范围加入到PVdC或PVdC-MA中。