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    • 10. 发明公开
    • Thermoplastic vulcanizates having improved fabricability
    • Thermoplastische Vulkanisate mit verbesserter Herstellbarkeit。
    • EP1655332A1
    • 2006-05-10
    • EP05110361.2
    • 2005-11-04
    • Advanced Elastomer Systems, L.P.
    • Ouhadi, Trazollah Dr.Wang, Kang-Bo
    • C08L23/00C08L21/00
    • C08L23/10C08L21/00C08L23/0815C08L23/14C08L23/16C08L2205/22C08L2312/00C08L2666/06
    • A TPV composition having improved fabricability and surface appearance is achieved by a process for preparing a thermoplastic vulcanizate composition having a dispersed, cross-linked rubber phase in a continuous thermoplastic polypropylene phase comprising: a) providing into melt processing equipment at least the following components; i) at least one thermoplastic polypropylene homopolymer or copolymer having a melt temperature greater than 120°C; ii) 6-12 wt.%, based on the total weight of the thermoplastic vulcanizate composition, at least one propylene copolymer having from 7 to 30 wt.% ethylene, based upon the weight of the random propylene copolymer, and a melting point less than 120°C; iii) at least one cross-linkable rubber, where, if including an ethylene copolymer rubber, said copolymer rubber having equal to or more than 40 wt.% the total copolymer rubber weight; b) melt processing the blend of i), ii), and iii) of a); c) dynamically vulcanizing the cross-linkable rubber iii) in the presence of the thermoplastic i) and random copolymer ii); and d) removing a thermoplastic vulcanizate product of c) from the melt processing equipment, wherein the dispersed, cross-linked rubber phase of the product thermoplastic vulcanizate d) consists of particles having an effective diameter not greater than 2 millimicrons.
    • 具有改进的可制造性和表面外观的TPV组合物通过制备在连续热塑性聚丙烯相中具有分散的交联橡胶相的热塑性硫化橡胶组合物的方法实现,该方法包括:a)至少提供以下组分的熔融加工设备; i)至少一种熔体温度大于120℃的热塑性聚丙烯均聚物或共聚物; ii)6-12重量%,基于热塑性硫化橡胶组合物的总重量,至少一种丙烯共聚物,其具有7至30重量%的乙烯,基于无规丙烯共聚物的重量,并且熔点较低 超过120°C; iii)至少一种可交联橡胶,其中如果包括乙烯共聚物橡胶,所述共聚物橡胶具有等于或大于共聚物橡胶重量的40重量%; b)熔融加工a),ii)和iii)的共混物; c)在热塑性i)和无规共聚物ii)的存在下动态硫化可交联橡胶iii) 和d)从熔融加工设备中除去c)的热塑性硫化产品,其中产物热塑性硫化橡胶的分散的交联橡胶相d)由有效直径不大于2毫微子的颗粒组成。