Polymerization process
    1.
    发明授权
    Polymerization process 失效
    聚合过程

    公开(公告)号:US06410659B1

    公开(公告)日:2002-06-25

    申请号:US08904236

    申请日:1997-07-31

    IPC分类号: C08F464

    摘要: A process for preparing bimodal molecular weight distribution copolymers of ethylene with alpha-olefins having 3 to 20 carbon atoms, said copolymers having: (a) a comonomer distribution wherein the comonomer level at the mid-position of the low molecular weight component is

    摘要翻译: 一种制备乙烯与具有3至20个碳原子的α-烯烃的双峰分子量分布共聚物的方法,所述共聚物具有:(a)共聚单体分布,其中低分子量组分中间位置的共聚单体水平为<3 次高分子量组分中间位置的水平,和(b)0.5-20个短链分支(SCB)/ 1000C原子范围内的总平均共聚单体含量,其特征在于所述方法在 存在支持的多位点催化剂。 多位点催化剂包括茂金属络合物和齐格勒催化剂。 茂金属络合物例如是二氯化二(五甲基环戊二烯基)二氯化锆。

    Catalyst composition
    4.
    发明授权
    Catalyst composition 失效
    催化剂组成

    公开(公告)号:US5830989A

    公开(公告)日:1998-11-03

    申请号:US532487

    申请日:1995-09-22

    IPC分类号: C08G67/00 C08G67/02

    CPC分类号: C08G67/02

    摘要: A catalyst composition for preparing polyketones comprises (a) a Group VIII metal compound, containing at least one ligand capable of coordinating to the Group VIII metal and, (b) a compound of the formula BXYZ where at least one of X, Y and Z is a chloro or bromophenyl group preferably B(p-ClC.sub.6 H.sub.4).sub.3. Polyketones having p-chlorophenyl or p-bromophenyl end groups are also disclosed.

    摘要翻译: 用于制备聚酮的催化剂组合物包含(a)含有至少一种能够与VIII族金属配位的配位体的第Ⅷ族金属化合物,和(b)式BXYZ化合物,其中X,Y和Z中的至少一个 是氯或溴苯基,优选B(p-ClC 6 H 4)3。 还公开了具有对氯苯基或对溴苯基端基的聚酮。

    Catalyst compositions and process for preparing polyolefins
    6.
    发明授权
    Catalyst compositions and process for preparing polyolefins 失效
    催化剂组合物和制备聚烯烃的方法

    公开(公告)号:US5814574A

    公开(公告)日:1998-09-29

    申请号:US689191

    申请日:1996-08-05

    申请人: John Paul McNally

    发明人: John Paul McNally

    摘要: A catalyst composition comprising at least one metallocene complex of general formula I or II ##STR1## wherein R is a univalent of divalent 1-20c hydrocarbyl, or a 1-20c hydrocarbyl containing substituent oxygen, silicon, phosphorus, nitrogen of sulphur atoms with the proviso that at least one R group contains a lewis base functionality and when there are two or more R groups present they may be the same or different, and when R is divalent it is directly attached to M and replaces a Y ligand, and wherein M is a Group IVA metal,Y is a univalent anionic ligand X is an organic group containing a cyclopentadienyl nucleus and for formula I n is an integer of 1 to 10 x is either 1 or 2, and for formula II, n, m and l are integers or 0 such that n +m +l .gtoreq.1, p =0-2, and z is a c.sub.1 to c.sub.4 alkylene radical or a dialkyl germanium or silicon or an alkyl phosphine or amine radical or bis-dialkylsilyl or bis-dialkylgermanyl containing hydrocarbyl groups having 1 to 4 carbon atoms bridging the cyclopentadienyl nuclei.

    摘要翻译: 一种催化剂组合物,其包含至少一种通式I或II M [X(R)n] x Yp(I)的茂金属络合物,其中R是二价1-20c烃基的一价或含有1-20c烃基的取代基 氧,硅,磷,氮原子,条件是至少一个R基团含有路易斯碱官能团,当存在两个或多个R基时,它们可以相同或不同,当R为二价时,它直接 M代替Y配体,其中M是IVA族金属,Y是一价阴离子配位体X是含有环戊二烯基核的有机基团,对于式I,n是1至10的整数,x是1或 对于式II,对于式II,n,m和l是整数或0,使得n + m + l> / = 1,p = 0-2,z是c1至c4亚烷基或二烷基锗或硅或 烷基膦或胺基或具有1至4个碳原子的烃基的双 - 二烷基甲硅烷基或双 - 二烷基富马净 剔除环戊二烯基核。