利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

175 条记录 (耗时 0.036 秒)

    Elastomeric copolymers of ethylene with propylene and process for their preparation
    91.
    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。

    Supported catalysts for the polymerization of olefins
    93.
    发明授权
    Supported catalysts for the polymerization of olefins 失效
    用于烯烃聚合的负载催化剂

    公开(公告)号：US06423660B1

    公开(公告)日：2002-07-23

    申请号：US09004867

    申请日：1998-01-09

    申请人： Enrico Albizzati ,  Tiziano Dall'Occo ,  Luigi Resconi ,  Fabrizio Piemontesi

    发明人： Enrico Albizzati ,  Tiziano Dall'Occo ,  Luigi Resconi ,  Fabrizio Piemontesi

    IPC分类号： C08F444

    CPC分类号： C08F10/00 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65922 ,  C08F110/02 ,  C08F210/16 ,  Y10S526/904 ,  Y10S526/943 ,  C08F4/602 ,  C08F4/63916 ,  C08F2500/17 ,  C08F2500/18 ,  C08F2500/20 ,  C08F210/08

    摘要： Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected from oxygen, nitrogen and sulphur; and (C) a compound of a transition metal selected from those of groups IVb, Vb or VIb of the Periodic Table of the Elements, containing ligands of the cyclopentadienyl type. These supported catalysts, obtainable in the form of spherical particles, can be used in the polymerization reaction of olefins either in liquid or in gas phase, thus producing polymers endowed with a controlled morphology and with a high bulk density.

    摘要翻译： 用于烯烃聚合的载体催化剂包括以下组分：（A）用具有活性氢原子的基团官能化的多孔有机载体;（B）含有选自氧，氮和硫的杂原子的铝的有机金属化合物; 和（C）选自元素周期表IVb，Vb或VIb族中的过渡金属的化合物，其含有环戊二烯基型配体。可以使用可以球形颗粒形式获得的这些负载型催化剂 在烯烃在液相或气相中的聚合反应中，从而产生具有受控形态和高体积密度的聚合物。

    Polyolefinic compositions for the manufacture of articles for biomedical use
    94.
    发明授权
    Polyolefinic compositions for the manufacture of articles for biomedical use 失效
    用于制造用于生物医学用途的制品的聚烯烃组合物

    公开(公告)号：US06376613B1

    公开(公告)日：2002-04-23

    申请号：US08384520

    申请日：1995-02-06

    申请人： Anteo Pelliconi ,  Rosanna Silvestri ,  Vittorio Braga ,  Luigi Resconi

    发明人： Anteo Pelliconi ,  Rosanna Silvestri ,  Vittorio Braga ,  Luigi Resconi

    IPC分类号： C08L5300

    CPC分类号： C08L23/02 ,  C08L23/10 ,  C08L23/142 ,  C08L23/16 ,  C08L2205/02 ,  C08L2207/02 ,  C08L2207/14 ,  C08L2666/04 ,  C08L2666/02

    摘要： Polyolefinic compositions comprising: (A) 1-99% by weight of a propylene amorphous polymer, and (B) 1-99% by weight of a copolymer selected from (BI) a copolymer of propylene with ethylene and/or alpha-olefins C4-C10, and (BII) a composition comprising: (a) 10-50% by weight of an isotactic polypropylene with ethylene and/or alpha-olefins C4-C10; (b) 0-20% by weight of a copolymer containing ethylene, insoluble in xylene, and (c) 40-80% by weight of an elastomeric copolymer of ethylene with propylene and/or alpha-olefins C4-C10, optionally with small amounts of diene. These compositions are endowed with good mechanical and optical properties and are suitable for the manufacture of articles for biomedical applications.

    摘要翻译： 聚烯烃组合物，其包含：（A）1-99重量％的丙烯无定形聚合物，和（B）1-99重量％的选自（BI）丙烯与乙烯和/或α-烯烃C4的共聚物的共聚物 -C10和（BII）组合物，其包含：（a）10-50重量％的全同立构聚丙烯与乙烯和/或α-烯烃C4-C10;（b）0-20重量％的含乙烯的共聚物 ，不溶于二甲苯，和（c）40-80重量％的乙烯与丙烯和/或α-烯烃C4-C10的弹性体共聚物，任选地含有少量二烯。这些组合物具有良好的机械和光学性能 并且适用于制造用于生物医学应用的制品。

    Catalysts and processes for the polymerization of olefins
    99.
    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。

    Thermoplastic compositions of atactic and syndiotactic polypropylene
    100.
    发明授权
    Thermoplastic compositions of atactic and syndiotactic polypropylene 失效
    无规立构和间同立构聚丙烯的热塑性组合物

    公开(公告)号：US5834562A

    公开(公告)日：1998-11-10

    申请号：US512674

    申请日：1995-08-08

    申请人： Rosanna Silvestri ,  Luigi Resconi ,  Anteo Pelliconi

    发明人： Rosanna Silvestri ,  Luigi Resconi ,  Anteo Pelliconi

    IPC分类号： C08J5/18 ,  C08L23/00 ,  C08L23/10 ,  C08L23/12

    CPC分类号： C08J5/18 ,  C08L23/10 ,  C08J2323/10 ,  C08L2205/02 ,  C08L2207/12 ,  C08L2207/14

    摘要： Thermoplastic polymer compositions are disclosed which comprise the following components: (A) 1 to 99% by weight of an amorphous propylene polymer having the following characteristics: �.eta.!>1 dl/g, % of syndiotactic dyads (r)-% of isotactic dyads (m)>0, less than 2% of the CH.sub.2 groups contained in (CH.sub.2).sub.n sequences wherein n.gtoreq.2, Bernoullianity index=1.+-.0.2; and (B) 1 to 99% by weight of a propylene polymer having an essentially syndiotactic structure, optionally containing from 0.1 to 30% by moles of units deriving from .alpha.-olefins of formula CH.sub.2 .dbd.CHR in which R is an hydrogen atom or an alkyl group having from 2 to 10 carbon atoms. The compositions of the invention are endowed with good elasto-mechanical properties and are suitable for the production of low-temperature-heat-sealing films.

    摘要翻译： 公开了热塑性聚合物组合物，其包含以下组分：（A）1至99重量％的具有以下特征的无定形丙烯聚合物：ηdl / g，间同立构二元组的百分比（r） - 全同立构的％ （CH 2）n序列中包含的CH 2基团的二（m）> 0，小于2％，其中n≥2，伯努利亚指数= 1 +/- 0.2; 和（B）1至99重量％的具有基本间同立构结构的丙烯聚合物，任选地含有0.1至30摩尔％的衍生自式R 2 = CHR的α-烯烃的单元，其中R是氢原子或 具有2至10个碳原子的烷基。 本发明的组合物具有良好的弹性机械性能，适用于生产低温热封膜。