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58 条记录 (耗时 0.034 秒)

    Elastomeric copolymers of ethylene with propylene and process for their preparation
    36.
    发明授权
    Elastomeric copolymers of ethylene with propylene and process for their preparation 失效
    乙烯与丙烯的弹性共聚物及其制备方法

    公开(公告)号：US06448351B1

    公开(公告)日：2002-09-10

    申请号：US09707645

    申请日：2000-11-07

    申请人： Maurizio Galimberti ,  Luigi Resconi ,  Enrico Albizzati

    发明人： Maurizio Galimberti ,  Luigi Resconi ,  Enrico Albizzati

    IPC分类号： C08F442

    CPC分类号： C08F210/16 ,  C08F4/65912 ,  C08F4/65927 ,  Y10S526/943 ,  C08F210/06 ,  C08F2500/17 ,  C08F2500/21 ,  C08F2500/20

    摘要： Amorphous copolymers of ethylene with propylene, and optionally with minor amounts of polyenes, have the following characteristics: (A) the % content by mole of propylene in the copolymer (%P) and the triads ratio EPE/(EPE+PPE+PPP) satisfy the following relationship: 0.01%P+EPE/(E?E+PPE+PPP)≧1 (B) less than 2% of the CH2 groups in the chain are in sequences (CH2)n, wherein n is an even number. These copolymers are obtainable by operating in the presence of particular metallocene catalysts having two fluorenyl groups joined together through a bridging group.

    摘要翻译： 乙烯与丙烯和任选少量多烯的无定形共聚物具有以下特征：（A）共聚物中的丙烯含量％（％P）和三元组比EPE /（EPE + PPE + PPP） 满足以下关系：（B）链中少于2％的CH 2基团为（CH 2）n序列，其中n为偶数。这些共聚物可通过在具有两个芴基 团体通过桥接组合在一起。

    Bituminous compositions modified with polyolefinic materials
    37.
    发明授权
    Bituminous compositions modified with polyolefinic materials 失效
    用聚烯烃材料改性的沥青组合物

    公开(公告)号：US06284820B1

    公开(公告)日：2001-09-04

    申请号：US08900035

    申请日：1997-07-24

    申请人： Vittorio Braga ,  Emilio Martini ,  Maurizio Galimberti ,  Enrico Albizzati

    发明人： Vittorio Braga ,  Emilio Martini ,  Maurizio Galimberti ,  Enrico Albizzati

    IPC分类号： C08J9500

    CPC分类号： C08L95/00 ,  C08L2666/06 ,  C08L2666/04

    摘要： The present invention relates to bituminous compositions, particularly suitable for paving and building waterproofing, comprising a bitumen and a copolymer of ethylene with propylene and/or other alpha-olefins and optionally with smaller proportion of a diene or polyene. The copolymer is besides characterized by a very low crystallinity, intrinsic viscosity higher than 1.5 dl/g and by a content of propylene units or of the alpha-olefin in form of triads comprised between 4 and 50% of the propylene or of the alpha-olefin, with at least 70% of said triads having isotactic structure.

    摘要翻译： 本发明涉及沥青组合物，特别适用于铺路和建筑防水，其包含沥青和乙烯与丙烯和/或其它α-烯烃以及任选地较少比例的二烯或多烯的共聚物。 该共聚物的特征在于非常低的结晶度，特性粘度高于1.5dl / g，丙烯单元或三元组形式的α-烯烃含量在丙烯或α-烯烃的4-50％之间， 烯烃，其中至少70％的所述三单元组具有全同立构结构。

    Catalysts and processes for the polymerization of olefins
    40.
    发明授权
    Catalysts and processes for the polymerization of olefins 失效
    催化剂和烯烃聚合方法

    公开(公告)号：US5849653A

    公开(公告)日：1998-12-15

    申请号：US503948

    申请日：1995-07-19

    申请人： Tiziano Dall'Occo ,  Maurizio Galimberti ,  Luigi Resconi ,  Enrico Albizzati ,  Gianni Pennini

    发明人： Tiziano Dall'Occo ,  Maurizio Galimberti ,  Luigi Resconi ,  Enrico Albizzati ,  Gianni Pennini

    IPC分类号： C08F4/642 ,  C08F4/64 ,  C08F4/648 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02 ,  C08F10/06 ,  C08F110/02 ,  C08F110/06 ,  C08F210/16

    CPC分类号： C08F10/00 ,  C08F10/02 ,  C08F10/06 ,  C08F110/02 ,  C08F110/06 ,  C08F210/16 ,  C08F4/65912 ,  C08F4/65922 ,  Y10S526/943

    摘要： Catalysts for the polymerization of olefins are disclosed, which comprise the reaction product of: (A) a bridged and/or substituted cyclopentadienyl compound of titanium, zirconium or hafnium; (B) an organometallic aluminum compound of the formula (II): Al(CH.sub.2 --CR.sup.4 R.sup.5 R.sup.6).sub.w R.sup.7.sub.y H.sub.z(II) wherein in the (CH.sub.2 --CR.sup.4 R.sup.5 R.sup.6) groups, which are the same or different, R.sup.4 is an alkyl, alkenyl or arylalkyl group having from 1 to 10 carbon atoms, R.sup.5 is an alkyl, alkenyl, aryl, arylalkyl or alkylaryl group having from 3 to 50 carbon atoms which is different from a straight alkyl or alkenyl group and, optionally, R.sup.4 and R.sup.5 fused together can form a ring having from 4 to 6 carbon atoms, R.sup.6 is hydrogen or an alkyl, alkenyl or arylalkyl group having from 1 to 10 carbon atoms, the R.sup.7 substituents, same or different, are alkyl, alkenyl, aryl, arylalkyl or alkylaryl radicals containing from 1 to 10 carbon atoms and, optionally, can contain Si or Ge atoms, w is 1, 2 or 3, z is 0 or 1, y=3-w-z; and (C) water. The molar ratio aluminum/water is comprised between 1:1 and 100:1. These catalysts show an improved activity with respect to known catalysts wherein an aluminum compound different from those of the above formula is used.

    摘要翻译： 公开了用于烯烃聚合的催化剂，其包含以下反应产物：（A）钛，锆或铪的桥连和/或取代的环戊二烯基化合物; （B）式（II）的有机金属铝化合物：Al（CH2-CR4R5R6）wR7yHz（Ⅱ）其中在相同或不同的（CH2-CR4R5R6）基团中，R4是烷基，烯基或芳基烷基 具有1至10个碳原子，R 5是具有3至50个碳原子的烷基，烯基，芳基，芳基烷基或烷基芳基，其不同于直链烷基或烯基，并且任选地，R 4和R 5稠合在一起可以形成 具有4至6个碳原子的环，R 6是氢或具有1至10个碳原子的烷基，链烯基或芳基烷基，相同或不同的R 7取代基是含1个碳原子的烷基，烯基，芳基，芳烷基或烷芳基 至10个碳原子，并且任选地可以含有Si或Ge原子，w是1,2或3，z是0或1，y = 3-wz; 和（C）水。 铝/水的摩尔比为1:1至100:1。 这些催化剂相对于已知的催化剂显示出改善的活性，其中使用与上式不同的铝化合物。