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128 条记录 (耗时 0.021 秒)

    Bituminous compositions modified with polyolefinic materials
    1.
    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。

    Elastomeric copolymers of ethylene and propylene
    5.
    发明授权
    Elastomeric copolymers of ethylene and propylene 失效
    乙烯和丙烯的弹性共聚物

    公开(公告)号：US06331600B1

    公开(公告)日：2001-12-18

    申请号：US08841473

    申请日：1997-04-22

    申请人： Maurizio Galimberti ,  Enrico Albizzati

    发明人： Maurizio Galimberti ,  Enrico Albizzati

    IPC分类号： C08F21016

    CPC分类号： C08F210/18 ,  C08F210/16 ,  Y10S526/943 ,  C08F4/6428 ,  C08F210/06 ,  C08F2500/17 ,  C08F2500/21 ,  C08F2500/15 ,  C08F2500/03

    摘要： Novel copolymers of ethylene with propylene and optionally with minor proportions of a diene or polyene having good elastomeric properties in their uncured state. The copolymers are characterized by a structure in which the propylene is partially present in the form of short isotactic sequences. Tension set values (200%) of less than 15 are obtained by when the ethylene/propylene ratio has specific values and the intrinsic viscosity values are higher than 3.

    摘要翻译： 乙烯与丙烯的新型共聚物和任选的少量二烯或其未固化状态下具有良好弹性体性质的多烯的共聚物。 共聚物的特征在于其中丙烯以短全同立构序列的形式部分存在的结构。 当乙烯/丙烯比具有特定值并且特性粘度值高于3时，获得小于15的张力设定值（200％）。

    Elastomeric copolymers of ethylene with &agr;-olefins and process for their preparation
    8.
    发明授权
    Elastomeric copolymers of ethylene with &agr;-olefins and process for their preparation 失效
    乙烯与α-烯烃的弹性共聚物及其制备方法

    公开(公告)号：US06403737B1

    公开(公告)日：2002-06-11

    申请号：US09694160

    申请日：2000-10-24

    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 ,  Y10S526/943 ,  C08F2/14 ,  C08F210/18 ,  C08F2500/03 ,  C08F2500/08 ,  C08F2500/17 ,  C08F2500/20 ,  C08F2500/21 ,  C08F210/08

    摘要： A process for the preparation of amorphous copolymers of ethylene with &agr;-olefins and optionally minor amounts of polyenes are disclosed, which have the following characteristics: (A) the % by mole content of &agr;-olefin in the copolymer (%&agr;) and the ratio between the molar amount of &agr;-olefin diads and the molar content of &agr;-olefin in the copolymer (&agr;&agr;/&agr;) satisfy the following relationship: (%&agr;)−250 (&agr;&agr;/&agr;)≧10 (B) less than 2% of the CH2 groups in the polymeric chain are in sequences (CH2)n, wherein n is an even number. These copolymers are obtained by operating in the presence of particular metallocene-based catalysts having two fluorenyl groups joined together through a bridging group.

    摘要翻译： 公开了一种制备乙烯与α-烯烃和任选少量多烯的无定形共聚物的方法，其具有以下特征：（A）共聚物中α-烯烃的摩尔％摩尔％（％）和 α-烯烃二单元摩尔量与共聚物中α-烯烃的摩尔含量之比（αalpha/α）满足以下关系：（B）聚合物链中少于2％的CH 2基团为顺序（ CH2）n，其中n是偶数。这些共聚物通过在具有通过桥连基团连接在一起的两个芴基的特定茂金属基催化剂存在下操作而获得。