Thermoplastic elastomeric resin composition and a process for the preparation thereof
    1.
    发明授权
    Thermoplastic elastomeric resin composition and a process for the preparation thereof 有权
    热塑性弹性体树脂组合物及其制备方法

    公开(公告)号:US06646047B2

    公开(公告)日:2003-11-11

    申请号:US09302864

    申请日:1999-04-30

    IPC分类号: C08L5302

    摘要: The invention provides a process for the preparation of a thermoplastic elastomeric resin composition comprising melt kneading (a) 100 parts by weight of a block copolymer consisting of at least two polymeric blocks (A) composed mainly of a vinyl aromatic compound and at least one polymeric block (B) composed mainly of a conjugated diene compound, and/or a hydrogenated block copolymer obtained by hydrogenating said block copolymer, (b) 20 to 300 parts by weight of a non-aromatic softening agent for rubber, (c) 1 to 150 parts by weight of a peroxide-crosslinking type olefinic resin and/or a copolymeric rubber containing said resin, and (d) 10 to 150 parts by weight of a peroxide-decomposing type olefinic resin and/or a copolymer containing said resin, characterized in that the process comprises a step of heat-processing component (a), component (b), at least a part of component (c), at least a part of component (d) and at least a part of 1.0 to 1,200 parts by weight of component (e) in the presence of an organic peroxide to cause crosslinking, wherein component (e) is at least one thermoplastic polymer selected from the group consisting of polyester type (co)polymers, polyamide type (co)polymers and polyurethane type (co)polymers, and a subsequent step of blending these with the remaining part of component (c), and, the remaining part of component (d) and component (e), if any. The obtained composition is soft and excellent in heat deformation resistance and mechanical strength, moldability and processability, particularly in oil resistance and stain resistance.

    摘要翻译: 本发明提供一种制备热塑性弹性体树脂组合物的方法,其包括熔融捏合(a)100重量份由至少两个主要由乙烯基芳族化合物组成的聚合物嵌段(A)和至少一种聚合物 主要由共轭二烯化合物组成的嵌段(B)和/或通过氢化所述嵌段共聚物得到的氢化嵌段共聚物,(b)20〜300重量份的用于橡胶的非芳香族软化剂,(c)1〜 150重量份的含有所述树脂的过氧化物交联型烯烃树脂和/或共聚橡胶,和(d)10至150重量份的过氧化物分解型烯烃树脂和/或含有所述树脂的共聚物,其特征在于 因为该方法包括热处理组分(a),组分(b),组分(c)的至少一部分,组分(d)的至少一部分和至少一部分1.0至1,200份 (e)中的组分(e) 有机过氧化物引起交联,其中组分(e)是选自聚酯型(共)聚合物,聚酰胺型(共)聚合物和聚氨酯类(共)聚合物)中的至少一种热塑性聚合物,以及随后的 将其与组分(c)的剩余部分以及组分(d)和组分(e)的剩余部分(如果有的话)混合的步骤。 所得组合物柔软且耐热变形性和机械强度,成型性和加工性优异,特别是耐油和耐污性。