Method of preparing an antibacterial polymer and its application
    1.
    发明授权
    Method of preparing an antibacterial polymer and its application 失效
    制备抗菌聚合物的方法及其应用

    公开(公告)号:US5137957A

    公开(公告)日:1992-08-11

    申请号:US667391

    申请日:1991-04-17

    CPC分类号: A01N59/16 C08K3/22

    摘要: A method of preparing an antibacterial polymer and application of the antibacterial polymer obtained by this method. A silver oxide and a thermoplastic copolymer that contains a unit consisting of ethylenically unsaturated carboxylic acid or an anhydride thereof and that can be melted upon heating, are mixed, melted and is kneaded in order to obtain a polymer that exhibits in combination the antibacterial property and the heat-processability or the heat-moldability. By making this polymer present on the inner surface of the packing containers, it is made possible to impart the antibacterial property without deteriorating the flavor retentivity for the contents.

    摘要翻译: PCT No.PCT / JP90 / 00979 Sec。 371日期:1991年4月17日 102(e)日期1991年4月17日PCT提交1990年7月31日PCT公布。 出版物WO91 / 02026 1991年2月21日。一种制备抗菌聚合物的方法和通过该方法获得的抗菌聚合物的应用。 将含有由烯键式不饱和羧酸或其酸酐组成的单元和加热熔融的单元的氧化银和热塑性共聚物混合,熔融并捏合以得到组合使用抗菌性和 热加工性或热成型性。 通过使该聚合物存在于包装容器的内表面上,能够赋予抗菌性,而不会降低内含物的香味保持性。

    Multilayer plastic container
    2.
    发明授权
    Multilayer plastic container 失效
    多层塑料容器

    公开(公告)号:US4919984A

    公开(公告)日:1990-04-24

    申请号:US256146

    申请日:1988-10-07

    IPC分类号: B29B17/00 B32B27/08

    摘要: An improvement in a packaging multilayer plastic container comprising a gas-barrier interlayer of an ethylene/vinyl alcohol copolymer and an inner and an outer layer of a moisture-resistant thermoplastic resin such as a polyester sandwiching the interlayer. An intermediary layer comprising particles of a high water-absorbing resin dispersed in a resinous medium is provided between the gas-barrier layer and each of the inner and outer layers. Crosslinked polyacrylic acid or its salt or a vinyl alcohol/acrylic acid (salt) block copolymer, for example, may be used as the highly water-absorbing resin. Because of its high saturation moisture absorption at high temperatures, the highly water-absorbing resin is effective for preventing degradation of the gas-barrier property of the ethylene/vinyl alcohol copolymer during retorting.

    摘要翻译: 一种改进的包装多层塑料容器,包括乙烯/乙烯醇共聚物的阻气中间层和耐湿热塑性树脂的内层和外层,例如夹着中间层的聚酯。 在阻气层与内层和外层之间设置包含分散在树脂介质中的高吸水性树脂颗粒的中间层。 可以使用交联的聚丙烯酸或其盐或乙烯醇/丙烯酸(盐)嵌段共聚物作为高吸水性树脂。 由于高温下的高饱和吸湿性,高吸水性树脂对于防止乙醇/乙烯醇共聚物在蒸煮过程中的气体阻隔性降低是有效的。