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    Polyester Compositions with Good Melt Rheological Properties
    9.
    发明申请
    Polyester Compositions with Good Melt Rheological Properties 审中-公开
    具有良好熔体流变性能的聚酯组合物

    公开(公告)号：US20110152456A1

    公开(公告)日：2011-06-23

    申请号：US12969862

    申请日：2010-12-16

    申请人： Judith Alison Peacock ,  Lech Wilczek

    发明人： Judith Alison Peacock ,  Lech Wilczek

    IPC分类号： C08L67/04 ,  C08L65/02

    CPC分类号： C08G63/06 ,  C08G63/82 ,  C08G83/003 ,  C08K9/06 ,  C08L67/00 ,  C08L67/04 ,  C08L2666/18

    摘要： Processes of making thermoplastic compositions comprising melt-mixing one or more thermoplastic polymers with a hyperbranched polymer made by heating in the presence of a mild basic/nucleophilic esterification catalyst a monomer mixture comprising a hyperbranching monomer consisting of compounds having two COOH groups and one OH group, compounds having one COOH group and two OH groups, compounds having one COOH group and three OH groups, or compounds having three COOH groups and one OH group, wherein the mild basic/nucleophilic esterification catalyst is selected from tin, titanium, aluminum, antimony, manganese, zinc, and calcium derivatives. Upon molding the thermoplastic composition into a test specimen having a thickness of 2 millimeters and after aging the test specimen at 121° C., 2 atm and 100 percent relative humidity for 50 hours, the test specimen retains at least 50 percent of its initial tensile strength as measured according to ISO 527-2/5A.

    摘要翻译： 制备热塑性组合物的方法包括将一种或多种热塑性聚合物与通过在温和的碱性/亲核酯化催化剂存在下加热制备的超支化聚合物熔融混合，所述单体混合物包含由具有两个COOH基团和一个OH基团的化合物组成的超分支单体 具有一个COOH基团和两个OH基团的化合物，具有一个COOH基团和三个OH基团的化合物，或具有三个COOH基团和一个OH基团的化合物，其中温和碱性/亲核酯化催化剂选自锡，钛，铝，锑 ，锰，锌和钙衍生物。 将热塑性组合物成型为厚度为2毫米的试样，并在121℃，2大气压和100％相对湿度下老化试验片50小时后，试样保持其初始拉伸强度的至少50％ 根据ISO 527-2 / 5A测量的强度。