Atactic polypropylene
    11.
    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

    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。

    Supported catalysts for the polymerization of olefins
    13.
    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:US06774194B2

    公开(公告)日:2004-08-10

    申请号:US10184679

    申请日:2002-06-26

    IPC分类号: C08F402

    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。

    Crystalline copolymers of propylene
    15.
    发明授权
    Crystalline copolymers of propylene 失效
    丙烯的结晶共聚物

    公开(公告)号:US06355758B1

    公开(公告)日:2002-03-12

    申请号:US08473006

    申请日:1995-06-07

    IPC分类号: C08F1004

    摘要: Novel crystalline copolymers of propylene with minor proportions of ethylene and/or alpha-olefins, endowed with very good mechanical properties, a low melting point and a limited solubility in xylene at 25° C., and the process for preparing them by means of the polymerization of mixtures of propylene with ethylene and/or alpha-olefins of suitable composition, by using catalysts obtained from stereorigid and chiral compounds of zirconium, and methylalumoxanic compounds.

    摘要翻译: 丙烯与较少比例的乙烯和/或α-烯烃的新型结晶共聚物具有非常好的机械性能,在25℃下具有低熔点和在二甲苯中的溶解度有限的方法,以及通过 通过使用由立体刚性和锆的手性化合物得到的催化剂和甲基铝氧烷化合物,聚合丙烯与乙烯和/或合适组成的α-烯烃的混合物。

    Supported catalysts for the polymerization of olefins
    19.
    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

    IPC分类号: C08F444

    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。