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128 条记录 (耗时 0.037 秒)

    Process for producing an electrical cable, particularly for high voltage direct current transmission or distribution
    52.
    发明授权
    Process for producing an electrical cable, particularly for high voltage direct current transmission or distribution 有权
    用于生产电缆的方法，特别是用于高压直流传输或分配的电缆

    公开(公告)号：US06824815B2

    公开(公告)日：2004-11-30

    申请号：US10026729

    申请日：2001-12-27

    申请人： Gabriele Perego ,  Enrico Albizzati

    发明人： Gabriele Perego ,  Enrico Albizzati

    IPC分类号： B05D512

    CPC分类号： H01B3/441 ,  C08F255/02 ,  Y10T428/2933 ,  Y10T428/294 ,  C08F220/06

    摘要： Process for preparing an electrical cable comprising at least one conductor and at least one layer of extruded insulating coating, which includes: coating, by extrusion, the conductor with a polymeric composition comprising a polyethylene, a radical initiator and at least one unsaturated carboxylic acid of general formula (I) in free form: in which: R1 represents H or CH3; n represents 0 or 1; said unsaturated carboxylic acid being present in an amount of between 0.0006% and 0.25% by weight, said amount being expressed as the weight content of —COOH groups relative to the total weight of the polymeric composition; heating the conductor thus coated so as to obtain cross-linking of said polymeric composition.

    摘要翻译： 一种用于制备电缆的方法，包括至少一个导体和至少一层挤出的绝缘涂层，其包括：通过用包含聚乙烯，自由基引发剂和至少一种不饱和羧酸的聚合物组合物挤出导体来涂覆 游离形式的通式（I）：其中：R 1表示H或CH 3; n表示0或1;所述不饱和羧酸的存在量为0.0006重量％至0.25重量％，所述量表示为重量 -COOH基团的含量相对于聚合物组合物的总重量;加热如此涂覆的导体，以获得所述聚合物组合物的交联。

    Cables with a recyclable coating
    55.
    发明授权
    Cables with a recyclable coating 有权
    具有可回收涂层的电缆

    公开(公告)号：US06610401B2

    公开(公告)日：2003-08-26

    申请号：US09894779

    申请日：2001-06-28

    申请人： Luca Castellani ,  Cristiana Scelza ,  Enrico Albizzati

    发明人： Luca Castellani ,  Cristiana Scelza ,  Enrico Albizzati

    IPC分类号： D02G300

    CPC分类号： H01B3/441 ,  C08L23/0815 ,  C08L23/10 ,  C08L2203/202 ,  Y10T428/2933 ,  Y10T428/294 ,  C08L2666/04

    摘要： Cable, in particular for medium-voltage or high-voltage electrical power transmission or distribution, for telecommunications or for data transmission, comprising a conductor and at least one coating layer based on a non-crosslinked polymer material comprising a thermoplastic reactor elastomer with an ethylene-based elastomeric phase co-polymerized with an &agr;-olefin and a propylene-based thermoplastic phase, in which the said elastomeric phase in the said thermoplastic reactor elastomer is at least 45% by weight relative to the total weight of the thermoplastic reactor elastomer, and the said thermoplastic reactor elastomer has value of enthalpy of fusion of peaks present below 130° C. and attributable to polyethylene sequences, such as HIFAX® KS080.

    摘要翻译： 电缆，特别是用于电信或数据传输的中压或高压电力传输或分配的电缆，包括导体和基于非交联聚合物材料的至少一个涂层，所述非交联聚合物材料包含热塑性反应器弹性体与乙烯 基弹性体相与α-烯烃和基于丙烯的热塑性相共聚，其中所述热塑性反应器弹性体中的所述弹性相相对于热塑性反应器弹性体的总重量为至少45重量％ 并且所述热塑性反应器弹性体具有存在于130℃以下并且归因于聚乙烯序列（例如HIFAX KS080）的峰的熔融焓值。

    Atactic polypropylene
    59.
    发明授权
    Atactic polypropylene 失效
    无规聚丙烯

    公开(公告)号：US5596052A

    公开(公告)日：1997-01-21

    申请号：US622566

    申请日：1996-03-25

    申请人： Luigi Resconi ,  Enrico Albizzati

    发明人： Luigi Resconi ,  Enrico Albizzati

    IPC分类号： C08F4/60 ,  C08F4/642 ,  C08F4/659 ,  C08F4/6592 ,  C08F8/00 ,  C08F10/06 ,  C08F110/06 ,  C08F4/64

    CPC分类号： C08F110/06 ,  C08F4/65927 ,  C08F4/65912 ,  Y10S526/943

    摘要： Amorphous propylene polymers are disclosed having the following characteristics:(a) intrinsic viscosity [.eta.]>1 d1/g;(b) %(r)-%(m)>0, wherein % (r) is the % of syndiotactic diads and %(m) is the % of isotactic diads;(c) less than 2% of the CH.sub.2 groups contained in sequences (CH.sub.2).sub.n, with n.gtoreq.2;(d) Bernoullianity index (B)=1.+-.0.2.These propylene polymers, which are in addition endowed with a narrow molecular weight distribution, can be obtained directly from the polymerization reaction of propylene as sole product and, therefore, do not require to be separated.

    摘要翻译： 公开了无定形丙烯聚合物，其具有以下特性：（a）特性粘度η1d1/ g; （b）％（r） - ％（m）> 0，其中％（r）是间同立构二价的％，％（m）是全同立构二价的％ （c）小于2％的序列（CH2）n中所含的CH2基团，其中n≥2; （d）伯努利亚指数（B）= 1 +/- 0.2。 另外具有窄分子量分布的丙烯聚合物可以直接从丙烯作为单一产物的聚合反应获得，因此不需要分离。

    Components and catalysts for the polymerization of olefins
    60.
    发明授权
    Components and catalysts for the polymerization of olefins 失效

    公开(公告)号：US4904628A

    公开(公告)日：1990-02-27

    申请号：US149894

    申请日：1988-01-28

    申请人： Enrico Albizzati ,  Sandro Parodi ,  Pier C. Barbe

    发明人： Enrico Albizzati ,  Sandro Parodi ,  Pier C. Barbe

    IPC分类号： C08F4/00 ,  C08F4/02 ,  C08F4/60 ,  C08F4/64 ,  C08F4/658 ,  C08F10/00

    CPC分类号： C08F10/00

    摘要： Catalysts for the polymerization of alpha-olefins, which comprise the product of the reaction between:(a) a metallorganic compound of Al;(b) an electron-donor compound reactive towards MgCl.sub.2 but which is not completely complexed with AlEt.sub.3, at the equivalent point of a potentiometric titration under standard conditions;(c) a solid comprising a halogenated Ti compound and an electron-donor belonging to particular classes of compounds and being extractable with AlEt.sub.3 for at least 70% by mols from the solid, the surface area of which after extraction is higher than 20 m.sup.2 /g.The present invention refers to new supported components of catalysts for the polymerization of olefins CH.sub.2 .dbd.CHR, in which R is an alkyl with 1-4 carbon atoms or an aryl, and of mixtures of such olefins with each other and/or with ethylene, and to the catalysts obtained from such components.