MONO-HYDROINDACENYL COMPLEXES
    162.
    发明申请
    MONO-HYDROINDACENYL COMPLEXES 有权
    单羟基二苯醚复合物

    公开(公告)号:US20120022226A1

    公开(公告)日:2012-01-26

    申请号:US12734304

    申请日:2008-12-11

    IPC分类号: C08F4/00 C08F4/78 C07F11/00

    摘要: The present invention relates to monohydroindacenyl complexes as active catalytic components in the copolymerization of ethylene. The complexes are suitable for direct preparation of ethylene copolymers having a narrow molecular distribution as well as the desired levels of low density and preferably a predetermined value of glass transition temperature Tg. The produced copolymers showing improved elastomeric performance can be prepared in a single step during polymerization reaction, thus avoiding a blending step following the polymerization step.

    摘要翻译: 本发明涉及在乙烯共聚合中作为活性催化组分的单氢茚基络合物。 该络合物适用于直接制备具有窄分子分布的乙烯共聚物以及所需的低密度水平,优选玻璃化转变温度Tg的预定值。 可以在聚合反应期间在单个步骤中制备显示改进的弹性体性能的所制备的共聚物,从而避免聚合步骤之后的共混步骤。

    Method of changing between incompatible polymerization catalysts in a gas-phase fluidized-bed reactor
    166.
    发明授权
    Method of changing between incompatible polymerization catalysts in a gas-phase fluidized-bed reactor 有权
    在气相流化床反应器中改变不相容的聚合催化剂的方法

    公开(公告)号:US07964677B2

    公开(公告)日:2011-06-21

    申请号:US12085079

    申请日:2006-11-10

    IPC分类号: C08F2/34 C08F4/78

    摘要: Method of changing from a polymerization using a first catalyst to a polymerization using a second catalyst which is incompatible with the first catalyst in a gas-phase reactor, which comprises the steps a) stopping of the polymerization reaction using the first catalyst, b) flushing of the reactor under polymerization conditions with at least one deactivating agent comprising a volatile constituent and a nonvolatile constituent in a weight ratio of from 0.1 to 1000, c) introduction of the second catalyst into the reactor and d) continuation of the polymerization using the second catalyst.

    摘要翻译: 在使用第一催化剂的聚合中使用在气相反应器中与第一催化剂不相容的第二催化剂进行聚合的方法,其包括步骤a)使用第一催化剂停止聚合反应,b)冲洗 的反应器在至少一种包含挥发性组分和非挥发性组分的去活化剂的重量比为0.1至1000的反应器中,c)将第二催化剂引入反应器中,d)使用第二种方法继续聚合 催化剂。

    ETHYLENE TERPOLYMERS
    169.
    发明申请
    ETHYLENE TERPOLYMERS 有权
    乙烯三元共聚物

    公开(公告)号:US20100298501A1

    公开(公告)日:2010-11-25

    申请号:US12735034

    申请日:2008-11-27

    摘要: A copolymer of ethylene, a catalyst system suitable to prepare the copolymer, and a process to prepare such copolymer are described. The copolymer comprises from 60 to 80% by weight of ethylene and from 20 to 40% by weight of at least one first α-olefin comonomer having n carbon atoms and at least one second α-olefin comonomer having (n−1) carbon atoms, n being from 4 to 13, has a polydispersity Mw/Mn equal to or lower than 3.5, and a density from 0.855 to 0.880 g/cm3. The copolymer is obtained by subjecting ethylene and said at least one first α-olefin comonomer to a polymerization stage in the presence of a catalyst system capable of forming a copolymer of ethylene and said at least one first α-olefin comonomer having n carbon atoms, while forming the second α-olefin comonomer having (n−1) carbon atoms.

    摘要翻译: 描述了乙烯的共聚物,适于制备共聚物的催化剂体系,以及制备这种共聚物的方法。 共聚物包含60至80重量%的乙烯和20至40重量%的至少一种具有n个碳原子的至少一种第一α-烯烃共聚单体和至少一种具有(n-1)个碳原子的第二α-烯烃共聚单体 n为4〜13,多分散性Mw / Mn为3.5以下,密度为0.855〜0.880g / cm 3。 该共聚物是通过使乙烯和所述至少一种第一α-烯烃共聚单体在能够形成乙烯和所述至少一种具有n个碳原子的第一α-烯烃共聚单体的共聚物的催化剂体系存在下进行聚合反应得到的, 同时形成具有(n-1)个碳原子的第二α-烯烃共聚单体。

    Antistatic for olefin polymerization and process for preparing it
    170.
    发明授权
    Antistatic for olefin polymerization and process for preparing it 有权
    用于烯烃聚合的抗静电剂及其制备方法

    公开(公告)号:US07838607B2

    公开(公告)日:2010-11-23

    申请号:US12226384

    申请日:2007-05-04

    申请人: Shahram Mihan

    发明人: Shahram Mihan

    IPC分类号: C08F4/44 C08F2/00

    摘要: Process for preparing an antistatic for olefin polymerization by contacting an antistatically acting compound comprising at least one hydrogen atom bound to a nonmetallic heteroatom with at least one metal alkyl in an amount which is sufficient to react completely with the at least one hydrogen atom bound to a heteroatom, wherein the antistatically acting compound and the metal alkyl are each present in a concentration of at least 0.01% by weight during contacting.

    摘要翻译: 通过将包含至少一个与非金属杂原子结合的至少一个氢原子的抗静电作用化合物与至少一种金属烷基进行接触来制备用于烯烃聚合的抗静电的方法,其量足以与至少一个与 杂原子,其中抗静电作用的化合物和金属烷基在接触期间的浓度各自为至少0.01重量%。