MELT STABLE AND HYDROLYSIS RESISTANT COMPOSITIONS
    1.
    发明公开
    MELT STABLE AND HYDROLYSIS RESISTANT COMPOSITIONS 有权
    熔化及稳定的耐水解组合物

    公开(公告)号:EP2880091A1

    公开(公告)日:2015-06-10

    申请号:EP13832931.3

    申请日:2013-03-12

    IPC分类号: C08K3/40 C08K5/49

    摘要: Polyester compositions comprising: a) at least one semi-aromatic polyester resin; b) at least one reinforcing agent; c) hydroxyapatite; d) at least one epoxy component having two or more epoxy functional groups per molecule of the epoxy component; and optionally, at least one toughener, wherein the compositions exhibit the combined property of a desirable melt viscosity stability and a desirable hydrolysis resistance to articles molded from the compositions. Articles molded or extruded from these compositions especially, electric and electronic components. Methods of maintaining melt viscosity stability of a melt-mixed composition while simultaneously retaining tensile strength in the article prepared from the melt-mixed composition.

    POLYESTER COMPOSITIONS WITH GOOD MELT RHEOLOGICAL PROPERTIES

    公开(公告)号:EP2513190B1

    公开(公告)日:2018-10-31

    申请号:EP10842657.8

    申请日:2010-12-17

    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.