Supported olefin polymerization catalyst, its preparation and use
    2.
    发明授权
    Supported olefin polymerization catalyst, its preparation and use 失效
    负载型烯烃聚合催化剂,其制备与应用

    公开(公告)号:US06291611B1

    公开(公告)日:2001-09-18

    申请号:US08481336

    申请日:1995-08-02

    IPC分类号: C08F4642

    摘要: Olefin polymerization comprising catalysts based on a metallocene, an alumoxane and a support are disclosed. The process for the preparation of a supported olefin ploymerization catalyst comprises: a) a metallocene/activator reaction product, a solvent capable of dissolving it, and a porous support are brought into mutual contact, and b) the solvent is removed, and wherein step a) is carried out so that the porous support is impregnated with a volume of the metallocene/activator reaction product and solvent, which does not exceed the total pore volume of the support.

    摘要翻译: 公开了包含基于茂金属,铝氧烷和载体的催化剂的烯烃聚合。 负载型烯烃聚合催化剂的制备方法包括:a)茂金属/活化剂反应产物,能够溶解的溶剂和多孔载体相互接触,b)除去溶剂,其中步骤a ),使得多孔载体用一定体积的金属茂/活化剂反应产物和溶剂浸渍,其不超过载体的总孔体积。

    Heat sealable polyethylene film and method for its preparation
    3.
    发明授权
    Heat sealable polyethylene film and method for its preparation 有权
    可热封聚乙烯薄膜及其制备方法

    公开(公告)号:US07018710B2

    公开(公告)日:2006-03-28

    申请号:US10312713

    申请日:2001-06-29

    IPC分类号: B32B27/08 B32B27/32

    摘要: A process for the preparation of a heat sealable film comprising a core layer and a sealing layer, said process comprising attaching said core layer to said sealing layer, said sealing layer comprising an ethylene copolymer composition in which: (1) there are two distinct maxima in the TREF fractogram of the ethylene copolymer composition; (2) at lest 10%, of the ethylene copolymer composition elutes in TREF at a temperature of less than 50° C.; (3) at least 25%, of the ethylene copolymer composition elutes in TREF at a temperature of higher than 75° C.; (4) none of the ethylene copolymer composition elutes in TREF at a temperature of higher than 100° C.; (5) the ethylene copolymer composition comprises two components, one of which is of relatively high comonomer content and high molecular weight, the other of which is of relatively low comonomer content and low molecular weight, both components being prepared by polymerisation of ethylene with a C3-20 alpha-olefin in the present of a single site catalyst; (6) the ethylene copolymer composition has a density of between 905 and 930 kg/m3, and an MFR2 between 0.3 and 4.0 g/10 min.

    摘要翻译: 一种制备可热封膜的方法,包括芯层和密封层,所述方法包括将所述芯层附着到所述密封层,所述密封层包含乙烯共聚物组合物,其中:(1)存在两个不同的最大值 在乙烯共聚物组成的TREF分解图中; (2)至少10%的乙烯共聚物组合物在低于50℃的温度下在TREF中洗脱; (3)至少25%的乙烯共聚物组合物在高于75℃的温度下在TREF中洗脱; (4)乙烯共聚物组合物中没有一种在高于100℃的温度下在TREF中洗脱。 (5)乙烯共聚物组合物包含两种组分,其中一种组分具有相对高的共聚单体含量和高分子量,另一种组分的共聚单体含量相对较低,分子量低,两种组分均通过乙烯与 单一位点催化剂存在下的3-30-α-烯烃; (6)所述乙烯共聚物组合物的密度在905至930kg / m 3的范围内,MFR 2之间的密度在0.3至4.0g / 10min之间。

    Activator system for metallocene compounds
    4.
    发明授权
    Activator system for metallocene compounds 失效
    金属茂化合物的活化剂体系

    公开(公告)号:US06380332B1

    公开(公告)日:2002-04-30

    申请号:US09355309

    申请日:1999-09-23

    IPC分类号: C08F416

    摘要: Aluminoxanes having C2-C10 alkyl groups can conveniently be used in supported olefin polymerization catalyst compositions prepared by contacting a support comprising a solid compound which is one of pure aluminium oxide, a mixed aluminium oxide, an aluminium salt, a magnesium halide, or a C1-C8 alkoxy magnesium halide, in any order with at least a) an organometallic compound, b) a metallocene, and c) an aluminoxane, and recovering said supported olefin polymerization catalyst composition.

    摘要翻译: 具有C2-C10烷基的氧化铝可以方便地用于通过使包含纯氧化铝,混合氧化铝,铝盐,卤化镁或C1的固体化合物的载体接触而制备的负载型烯烃聚合催化剂组合物 -C8烷氧基卤化镁,以至少为a的任何顺序)有机金属化合物,b)茂金属和c)铝氧烷,并回收所述负载型烯烃聚合催化剂组合物。

    Multi-stage process for producing multi-modal linear low density polyethylene
    7.
    发明授权
    Multi-stage process for producing multi-modal linear low density polyethylene 有权
    生产多模式线性低密度聚乙烯的多阶段工艺

    公开(公告)号:US08409681B2

    公开(公告)日:2013-04-02

    申请号:US13126496

    申请日:2010-02-22

    摘要: A process is disclosed for producing a multi-modal linear low density polyethylene in at least two staged reactors connected in series, comprising (i) polymerizing in a first slurry phase stage ethylene monomers with a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A); and (ii) polymerizing in a second gas or slurry phase stage ethylene monomers with a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B). The Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of formula (I) b) an aluminum compound of formula (II); and c) a vanadium compound and a titanium compound having a molar ratio (V:Ti) from 10:90 to 90:10; and 2) one or more organometallic cocatalvsts of formula (III). The linear low density polyethylene shows an improved comonomer composition distribution Formulas (I), (II), and (III) are described herein.

    摘要翻译: 公开了一种用于在至少两个分级反应器中串联生产多模式线性低密度聚乙烯的方法,其包括(i)在第一浆液阶段中聚合乙烯单体与齐格勒 - 纳塔聚合催化剂体系以获得第一聚乙烯 级分组分(A); 和(ii)在齐格勒 - 纳塔聚合催化剂体系中在第二气体或浆料相阶段中聚合乙烯单体以获得第二聚乙烯级分组分(B)。 齐格勒 - 纳塔聚合催化剂体系包括:1)通过使至少a)使式(I)的Mg-醇合物络合物b)式(II)的铝化合物与式 和c)钒化合物和摩尔比(V:Ti)为10:90至90:10的钛化合物; 和2)式(III)的一种或多种有机金属助催化剂。 线性低密度聚乙烯显示改进的共聚单体组成分布本文描述了式(I),(II)和(III)。

    Substituted metallocene compounds for olefin polymerization catalyst systems, their intermediates and methods for preparing them

    公开(公告)号:US06355819B1

    公开(公告)日:2002-03-12

    申请号:US09402934

    申请日:1999-12-20

    IPC分类号: C07F1700

    摘要: The invention relates to metallocene compounds having the formula (I): (CpYq)mMRnBo  (I) wherein: Cp or each same or different Cp is a non-substituted or substituted, fused or non-fused, homo(iso)cyclic or heterocyclic cyclopentadienyl ligand, indenyl ligand, tetrahydroindenyl ligand, fluorenyl ligand or octahydrofluorenyl ligand, Y or each same or different Y is a substituent at the cyclopentadienyl ring of said ligand Cp having the following structure (II): wherein: D is an element of Group 14 of the Periodic Table (IUPAC), R1, R2 and R3 are the same or different and are each one of a hydrogen, a halogen, a substituted or unsubstituted C1-C10 hydrocarbyl group, a substituted or unsubstituted C1-C10 hydrocarbyloxy group, a C1-C12 organosilicon group, or at least two of R1, R2 and R3 form together with D a C4-C20 ring structure; M is a transition metal of Group 4 of the Periodic Table (IUPAC) and is bound to the ligand Cp or ligands Cp in an &eegr;5 bonding mode; R or each same or different R is bound to M and is one of a hydrogen, a halogen, a substituted or unsubstituted C1-C10 hydrocarbyl group, a substituted or unsubstituted C1-C10 hydrocarbyloxy group, a C1-C12 organosilicon group, or two R form together with M a C4-C20 metallocyclic ring structure; B is a bridge atom or group between two Cp ligands or between one Cp ligand and M; q is, when Cp is non-bridged, 0-5 for the cyclopentadienyl ligand, 0-3 for the indenyl or tetrahydroindenyl ligand and 0-1 for the fluorenyl or octahydrofluorenyl ligand, q is, when Cp is bridged, 0-4 for the cyclopentadienyl ligand, 0-2 for the indenyl or tetrahydroindenyl ligand and 0 for the fluorenyl or octahydrofluorenyl ligand; m is 1 or 2; m·q≧1; o is 0 or 1; and n is 4-m-o, except when there is one bridge B between two Cp ligands, in which case n is 4-m, their intermediates, preparation and use.

    Polymerization process
    9.
    发明授权
    Polymerization process 有权
    聚合过程

    公开(公告)号:US07666957B2

    公开(公告)日:2010-02-23

    申请号:US10585199

    申请日:2004-12-27

    摘要: A process for the polymerisation of ethylene and optionally at least one C3-20 alpha olefin comonomer in the slurry or solution phase in a reactor having a polymer outlet stream, a procatalyst or catalyst feed stream and a hydrogen feed stream, said polymerisation being effected in the presence of a metallocene catalyst, a diluent and hydrogen, wherein said diluent is recycled from said outlet stream to said hydrogen feed stream, said procatalyst or catalyst feed stream is free of hydrogen, said hydrogen feed stream is free of procatalyst or catalyst and said procatalyst or catalyst feed stream does not comprise recycled diluent.

    摘要翻译: 在具有聚合物出口流,原催化剂或催化剂进料流和氢气进料流的反应器中,在浆液或溶液相中使乙烯和任选的至少一种C 3-20α-烯烃共聚单体聚合的方法,所述聚合反应在 金属茂催化剂,稀释剂和氢气的存在,其中所述稀释剂从所述出口流再循环到所述氢气进料流,所述前催化剂或催化剂进料流不含氢气,所述氢气进料流不含前催化剂或催化剂,并且所述 前催化剂或催化剂进料流不包含再循环的稀释剂。

    Polymerization Process
    10.
    发明申请
    Polymerization Process 有权
    聚合过程

    公开(公告)号:US20080269435A1

    公开(公告)日:2008-10-30

    申请号:US10585199

    申请日:2004-12-27

    IPC分类号: C08F2/00 B01J19/00

    摘要: A process for the polymerisation of ethylene and optionally at least one C3-20 alpha olefin comonomer in the slurry or solution phase in a reactor having a polymer outlet stream, a procatalyst or catalyst feed stream and a hydrogen feed stream, said polymerisation being effected in the presence of a metallocene catalyst, a diluent and hydrogen, wherein said diluent is recycled from said outlet stream to said hydrogen feed stream, said procatalyst or catalyst feed stream is free of hydrogen, said hydrogen feed stream is free of procatalyst or catalyst and said procatalyst or catalyst feed stream does not comprise recycled diluent.

    摘要翻译: 在具有聚合物出口流,原催化剂或催化剂进料流和氢气的反应器中,在淤浆或溶液相中使乙烯和任选的至少一种C 3-20α-烯烃共聚单体聚合的方法 所述聚合在茂金属催化剂,稀释剂和氢气存在下进行,其中所述稀释剂从所述出口流再循环到所述氢气进料流中,所述前催化剂或催化剂进料流不含氢气,所述氢气进料流 不含主催化剂或催化剂,并且所述原催化剂或催化剂进料流不包含再循环稀释剂。