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    EXPANDABLE VINYL AROMATIC POLYMERIC COMPOSITIONS
    8.
    发明公开
    EXPANDABLE VINYL AROMATIC POLYMERIC COMPOSITIONS 审中-公开
    膨胀型聚乙烯醇缩丁醛聚合物

    公开(公告)号：EP3056534A1

    公开(公告)日：2016-08-17

    申请号：EP16153480.5

    申请日：2016-01-29

    申请人： versalis S.p.A.

    发明人： LA PICCIRELLA, Andrea ,  LONGO, Aldo ,  FERRI, Dino ,  VANNUCCI, Giuditta

    IPC分类号： C08J9/16 ,  C08J9/00 ,  C08L25/04 ,  C08J9/18 ,  C08J9/14 ,  C08J9/224

    CPC分类号： C08J9/0061 ,  C08J9/0004 ,  C08J9/0014 ,  C08J9/141 ,  C08J9/16 ,  C08J9/18 ,  C08J9/224 ,  C08J2201/03 ,  C08J2201/036 ,  C08J2203/14 ,  C08J2203/182 ,  C08J2325/06 ,  C08J2325/14 ,  C08J2425/06 ,  C08J2425/14 ,  C08L25/04 ,  C08L25/14

    摘要： The present patent application relates to an expandable polymeric composition with an enhanced processability which comprises:
    i. a polymeric base comprising:
    a) from 0% to 100% by weight measured on the total base (i) of a vinyl aromatic polymer,
    b) from 100% to 0% by weight measured on the total base (i) of a co-polymer containing from 50% to 99% by weight of vinyl aromatic monomers and from 1% to 50% of at least one type of alkyl ester having from 1 to 18 carbon atoms, derivative of acrylic or methacrylic acid,

    ii. from 0.2 to 10 parts by weight measured on 100 parts of polymeric base (i) of an expanding agent, and
    iii. alternatively:
    A) from 0 to 10 parts by weight measured on 100 parts of polymeric base (i) of an additive with a plasticizing effect when (i) comprises at least 2% by weight of (b), or
    B) from 0.3 to 10 parts by weight measured on 100 parts of polymeric base (i) of an additive with a plasticizing effect when (i) comprises only (a),

    said polymeric composition being characterized in that:
    • the molecular mass at the maximum peak Mp of (i) ranges from 130 kDa to 190 kDa and the centrifugal average molecular mass Mz of (i) ranges from 430 kDa to 900 kDa,
    • the difference in the glass-transition temperature (DTg) measured between a vinyl aromatic polymer having a molecular weight distribution (MWD) of (i) and composition of the vinyl aromatic fraction alone of (i), and a polymeric composition consisting of (i) and (iii), ranges from 1°C to 8°C.

    摘要翻译： 本专利申请涉及具有增强的可加工性的可发性聚合物组合物，其包括：i。 聚合物基质，其包含：a）在乙烯基芳族聚合物的总碱（i）上测量的0重量％至100重量％，b）按共混物的总碱（i）测量的100重量％至0重量％ 含有50-99％（重量）乙烯基芳族单体和1％至50％至少一种具有1至18个碳原子的烷基酯，丙烯酸或甲基丙烯酸衍生物的聚合物，ii。 在100份发泡剂的聚合物基质（ⅰ）上测量为0.2至10重量份，和iii。 A）0至10重量份，当（i）包含至少2重量％（b），或B）0.3重量％时，在100份聚合物基质（i）上具有增塑作用的添加剂 当（i）仅包含（a）时，在100份具有增塑作用的添加剂聚合物基质（i）上测量10重量份，所述聚合物组合物的特征在于：最大峰值Mp处的分子质量 （i）的范围为130kDa至190kDa，（i）的离心平均分子量Mz在430kDa至900kDa范围内，在玻璃化转变温度（DTg）之间测量的乙烯基芳族聚合物之间的差异 （i）的分子量分布（MWD）和（i）单独的乙烯基芳族组分的组成和由（i）和（iii）组成的聚合物组合物的范围为1℃至8℃。