Polycarbonate moulding compounds
    1.
    发明授权
    Polycarbonate moulding compounds 失效
    聚碳酸酯模塑料

    公开(公告)号:US4172103A

    公开(公告)日:1979-10-23

    申请号:US827103

    申请日:1977-08-23

    摘要: Thermoplastic moulding compounds of1. 10-95% by weight of an aromatic polycarbonate in which at least 50% of the linear chains comprise recurrent structural units of the formula ##STR1## in which R represents C.sub.1 -C.sub.3 alkyl and X represents a single bond, --O--, --CO--, --SO.sub.2 --, C.sub.1 -C.sub.10 alkylene, C.sub.1 -C.sub.10 alkylidene, C.sub.5 -C.sub.15 cycloalkylene, C.sub.5 -C.sub.15 cycloalkylidene or ##STR2## 2. 5-90% by weight of a thermoplastic resin and/or 3. 5-90% BY WEIGHT OF RUBBER WHICH MAY BE MODIFIED.

    摘要翻译: 热塑性成型化合物,按重量百分比为10-95%的芳族聚碳酸酯,其中至少50%的线性链包含式(1)中的重复结构单元,其中R表示C1-C3烷基,X表示 单键,-O - , - CO - , - SO 2 - ,C 1 -C 10亚烷基,C 1 -C 10亚烷基,C 5 -C 15亚环烷基,C 5 -C 15亚环烷基或(2)2. 5-90重量% 的热塑性树脂和/或3. 5-90%可以改性的橡胶。

    Catalyst, its production and its use for the gas-phase polymerization of
conjugated dienes
    8.
    发明授权
    Catalyst, its production and its use for the gas-phase polymerization of conjugated dienes 失效
    催化剂,其制备及其在共轭二烯气相聚合中的应用

    公开(公告)号:US5858903A

    公开(公告)日:1999-01-12

    申请号:US933597

    申请日:1997-09-18

    摘要: Catalysts consisting ofA) an alcoholate of the rare earths, a carboxylate of the rare earths, a complex compound of the rare earths with diketones and/or an addition compound of the halides of the rare earths with an oxygen or nitrogen donor compound,B) an aluminium trialkyl, a dialkyl aluminium hydride and/or an alumoxane,C) another Lewis acid andD) an inert, particulate inorganic solid with a specific surface of greater than 10 m.sup.2 /g (BET) and a pore volume of 0.3 to 15 ml/gare eminently suitable for the polymerization of conjugated dienes, more particularly butadiene, in the gas phase.

    摘要翻译: 由以下组成的催化剂:A)稀土的醇化物,稀土的羧酸盐,稀土与二酮的络合物和/或稀土卤化物的加成化合物与氧或氮给体化合物B, )三烷基铝,二烷基氢化铝和/或铝氧烷,C)另一种路易斯酸和D)比表面积大于10m 2 / g(BET)的惰性颗粒状无机固体,孔体积为0.3〜 15ml / g非常适合在气相中共轭二烯,更特别是丁二烯的聚合。