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    • 6. 发明申请
    • Closure liner for high-temperature applications
    • 封闭衬垫用于高温应用
    • US20080153952A1
    • 2008-06-26
    • US11642409
    • 2006-12-20
    • Terry D. Patcheak
    • Terry D. Patcheak
    • C08K5/17C08K5/101C08K3/34
    • B65D51/145C08K5/0016C08K5/01C08K5/20C08L23/16C08L53/00C08L2666/24C08L2666/02C08L2666/04
    • A liner for a plastic closure includes styrene-isobutylene-styrene (SIBS) blended with a resin polymer. This resin polymer preferably includes ethylene propylene diene monomer (EPDM rubber). The SIBS preferably is in an amount in the range of 10 to 90% by weight, more preferably 30 to 60% by weight, with an amount of about 46% by weight being particularly preferred. The resin polymer preferably is in an amount in the range of 10 to 90% by weight, more preferably 30 to 50% by weight, with an amount of about 41% by weight being particularly preferred. The EPDM rubber preferably is an elastomeric alloy of EPDM rubber and polypropylene. Mineral oil preferably is present, if at all, in an amount not more than 20% by weight. The liner may include up to 8% by weight process aids such as lubricant and up to 5% compatibilizer by weight.
    • 用于塑料封闭件的衬垫包括与树脂聚合物共混的苯乙烯 - 异丁烯 - 苯乙烯(SIBS)。 该树脂聚合物优选包括乙烯丙烯二烯单体(EPDM橡胶)。 SIBS的含量优选为10〜90重量%,更优选为30〜60重量%,特别优选为约46重量%。 树脂聚合物的量优选为10〜90重量%,更优选为30〜50重量%,特别优选为41重量%左右。 EPDM橡胶优选是EPDM橡胶和聚丙烯的弹性体合金。 优选存在矿物油,如果总量不超过20重量%。 衬里可以包括高达8重量%的加工助剂如润滑剂和最多5重量%的增容剂。