Method of Changing Between Incompatible Polymerization Catalysts in a Gas-Phase Fluidized-Bed Reactor
    92.
    发明申请
    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:US20090062486A1

    公开(公告)日:2009-03-05

    申请号:US12085079

    申请日:2006-11-10

    IPC分类号: C08F2/00

    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,其包括以下步骤: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。

    Nmr Method of Determining and Regulating the Composition of Polymer Mixtures in Polymerization
    96.
    发明申请
    Nmr Method of Determining and Regulating the Composition of Polymer Mixtures in Polymerization 有权
    确定和调节聚合物中聚合物混合物组成的方法

    公开(公告)号:US20080200622A1

    公开(公告)日:2008-08-21

    申请号:US11629542

    申请日:2005-06-09

    IPC分类号: C08F2/00 G01R33/44 G01N24/08

    摘要: Method of determining the composition of polymer mixtures comprising defined polymer components of differing mean molar masses Mn, which comprises the steps (a) recording of at least one 1H-NMR relaxation curve of the polymer mixture and (b) calculating the proportions of the polymer components by matching the measured relaxation curve with the relaxation curves of the individual polymer components. In this way, the composition of polymer mixtures can be determined quickly and simply. Furthermore, process integration for regulating the polymerization is possible.

    摘要翻译: 确定包含不同平均摩尔质量M N的定义的聚合物组分的聚合物混合物的组成的方法,其包括步骤(a)记录至少一个1 H-NMR 聚合物混合物的松弛曲线和(b)通过将测量的松弛曲线与各个聚合物组分的松弛曲线相匹配来计算聚合物组分的比例。 以这种方式,可以快速且简单地确定聚合物混合物的组成。 此外,用于调节聚合的方法集成是可能的。

    Loop Reactor With Varying Diameter For Olefin Polymerization
    97.
    发明申请
    Loop Reactor With Varying Diameter For Olefin Polymerization 有权
    环烯烃反应器用于烯烃聚合的不同直径

    公开(公告)号:US20080119624A1

    公开(公告)日:2008-05-22

    申请号:US10572817

    申请日:2004-09-16

    IPC分类号: C08F2/00

    摘要: Process for polymerizing at least one olefinic monomer selected from ethylene, propylene and 1-butene in a loop reactor in the presence of a polymerization catalyst at from 20 to 150° C., but below the melting point of a polymer to be formed, and a pressure of from 43 to 80 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension medium and wherein the suspension is circulated by means of an axial pump, wherein the polymerization is carried out at an average solids concentration in the reactor of more than 53% by weight, in the case of continuous product discharge, and at an average solids concentration in the reactor of more than 45% by weight, in the case of discontinuous product discharge, and wherein the polymerization is carried out at an ethylene concentration of at least 10 mol %, based on the suspension medium.

    摘要翻译: 在聚合催化剂存在下,在环状反应器中,在20〜150℃,但低于待形成的聚合物的熔点,聚合至少一种选自乙烯,丙烯和1-丁烯的烯烃单体的方法,以及 其中形成的聚合物存在于液体或超临界悬浮介质中的悬浮液中,并且其中悬浮液通过轴向泵循环,其中聚合以平均固体浓度进行 反应器在连续产物排出的情况下大于53重量%,反应器中的平均固体浓度大于45重量%,在不连续的产物排出的情况下,并且其中进行聚合 基于悬浮介质,乙烯浓度至少为10摩尔%。

    Polyethylene and Catalyst Composition for its Preparation
    99.
    发明申请
    Polyethylene and Catalyst Composition for its Preparation 有权
    聚乙烯和催化剂组合物的制备

    公开(公告)号:US20070213205A1

    公开(公告)日:2007-09-13

    申请号:US11578753

    申请日:2005-04-25

    申请人: Shahram Mihan

    发明人: Shahram Mihan

    IPC分类号: C08L23/04

    摘要: Polyethylene which comprises ethylene homopolymers and copolymers of ethylene with α-olefins and has a molar mass distribution width Mw/Mn of from 6 to 100, a density of from 0.89 to 0.97 g/cm3, a weight average molar mass Mw of from 5000 g/mol to 700 000 g/mol and has from 0.01 to 20 branches/1000 carbon atoms and at least 0.5 vinyl groups/1000 carbon atoms, wherein the 5-50% by weight of the polyethylene having the lowest molar masses have a degree of branching of less than 10 branches/1000 carbon atoms and the 5-50% by weight of the polyethylene having the highest molar masses have a degree of branching of more than 2 branches/1000 carbon atoms, a process for its preparation, catalysts suitable for its preparation and also fibers, moldings, films or polymer blends in which this polyethylene is present.

    摘要翻译: 聚乙烯,其包含乙烯均聚物和乙烯与α-烯烃的共聚物,并且具有6至100的摩尔质量分布宽度M w / M N n N,密度为0.89 至0.97g / cm 3,重均摩尔质量Mw为5000g / mol至700000g / mol,并具有0.01至20支/ 1000碳 原子和至少0.5个乙烯基/ 1000个碳原子,其中5-50重量%的具有最低摩尔质量的聚乙烯具有小于10个支链/ 1000个碳原子的支化度和5-50重量% 具有最高摩尔质量的聚乙烯具有多于2个支链/ 1000个碳原子的支化度,其制备方法,适用于其制备的催化剂以及其中存在该聚乙烯的纤维,模制品,膜或聚合物共混物 。

    Catalyst System for Olefin Polymerization, its Production and Use
    100.
    发明申请
    Catalyst System for Olefin Polymerization, its Production and Use 有权
    用于烯烃聚合的催化剂体系,其生产和使用

    公开(公告)号:US20070207916A1

    公开(公告)日:2007-09-06

    申请号:US11578593

    申请日:2005-04-21

    IPC分类号: B01J37/00 C08F4/44

    摘要: Process for producing a catalyst system, which comprises the following steps: A) provision of a mixture of at least two different organic transition metal compounds, at least one hydrolyzed organoaluminum compound and a solvent and impregnation of a dry porous support component with the mixture from step A), with the total volume of the mixture being from 0.6 to 1.5 times the total pore volume of the support component, and also catalyst systems obtainable in this way and their use for olefin polymerization.

    摘要翻译: 制备催化剂体系的方法,其包括以下步骤:A)提供至少两种不同的有机过渡金属化合物,至少一种水解的有机铝化合物和溶剂的混合物,并将干燥的多孔载体组分浸渍 步骤A),混合物的总体积为载体组分的总孔体积的0.6-1.5倍,以及可以以这种方法获得的催化剂体系及其在烯烃聚合中的用途。