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    Polyolefin compositions used for making embossed sheets with improved gain retention
    2.
    发明授权
    Polyolefin compositions used for making embossed sheets with improved gain retention 有权
    用于制造具有改善的增益保留的压花片材的聚烯烃组合物

    公开(公告)号：US5948867A

    公开(公告)日：1999-09-07

    申请号：US177769

    申请日：1998-10-23

    申请人： Cheryl L. Abhau

    发明人： Cheryl L. Abhau

    IPC分类号： B29C59/02 ,  B29K23/00 ,  B29L7/00 ,  C08J5/18 ,  C08L23/08 ,  C08L23/10 ,  C08L23/16 ,  C08L53/00 ,  C08L23/12 ,  C08L23/26

    CPC分类号： C08L23/16 ,  C08L23/10 ,  C08L2205/02 ,  C08L23/0815 ,  C08L2312/00 ,  C08L53/00

    摘要： Embossed sheets having improved grain retention can be made from a polyolefin composition containing a propylene polymer material and a partially crosslinked thermoplastic olefin elastomer composition that includes (1) 20-80 parts by weight of a thermoplastic elastomer containing (a) from 20 to 70% of a propylene homopolymer having an isotactic index greater than 90, or a crystalline propylene copolymer with ethylene and/or a 4-8 C alpha-olefin having a polymerized propylene content greater than 85% and an isotactic index of greater than 85%; (b) from 30 to 75% of an amorphous ethylene-propylene or ethylene-butane-1 copolymer, which is xylene soluble at room temperature and contains from 30 to 70% polymerized ethylene, and (c) from 3 to 30% of a semi-crystalline ethylene-propylene or ethylene-butene-1 copolymer that is xylene insoluble at room temperature and contains greater than 90% polymerized ethylene, and (2) 80-20 parts by weight of an ethylene/propylene/diene terpolymer rubber containing 1 to 10% of a polymerized diene and 30 to 70% polymerized ethylene. Large parts such as automobile door and instrument panels can be formed from these sheets.

    摘要翻译： 具有改善的颗粒保留性的压花片可以由含有丙烯聚合物材料和部分交联的热塑性烯烃弹性体组合物的聚烯烃组合物制成，该组合物包括（1）20-80重量份的含有（a）20至70重量％ 具有大于90的全同立构指数的丙烯均聚物或具有聚合丙烯含量大于85％和全同立构指数大于85％的乙烯和/或4-8Cα-烯烃的结晶丙烯共聚物; （b）30至75％的无定形乙烯 - 丙烯或乙烯 - 丁烷-1共聚物，其在室温下为二甲苯可溶，含有30至70％的聚合乙烯，和（c）3-30％的 半结晶乙烯 - 丙烯或乙烯 - 丁烯-1共聚物，其在室温下不溶于二甲苯并含有大于90％的聚合乙烯，和（2）80-20重量份的乙烯/丙烯/二烯三元共聚物橡胶，其含有1 至10％的聚合二烯和30至70％聚合的乙烯。 大型零件如汽车门和仪表板可由这些板形成。