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    Long chain branched polymers and methods of making same
    41.
    发明授权
    Long chain branched polymers and methods of making same 有权
    长链支化聚合物及其制备方法

    公开(公告)号：US09023967B2

    公开(公告)日：2015-05-05

    申请号：US13308289

    申请日：2011-11-30

    申请人： Youlu Yu ,  Eric D. Schwerdtfeger ,  Max P. McDaniel ,  Alan L. Solenberger ,  Kathy S. Collins

    发明人： Youlu Yu ,  Eric D. Schwerdtfeger ,  Max P. McDaniel ,  Alan L. Solenberger ,  Kathy S. Collins

    IPC分类号： C08F10/02 ,  C08F4/02 ,  C08F4/69 ,  C08F110/02

    CPC分类号： C08F110/02 ,  B01J23/26 ,  B01J35/1009 ,  B01J35/1014 ,  B01J35/1019 ,  C08F10/02 ,  C08F210/02 ,  C08F2500/04 ,  C08F2500/09 ,  C08F4/69 ,  C08F4/025

    摘要： A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 8 long chain branches per million carbon atoms, a polydispersity index of greater than about 20 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 1 long chain branches per chain, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution.

    摘要翻译： 具有长链支化含量高于每百万个碳原子大于约20个长支链的聚合物，多分散指数大于约10，其中长链支化在分子量的较高分子量部分下降至约零 分配。 具有长链支化含量高于每百万个碳原子大于约8个长链分支的聚合物，多分散指数大于约20，其中长链支化在分子量分布的较高分子量部分下降至约零 。 具有长链支化含量在每链大于约1个长链分支峰值的聚合物，以及大于约10的多分散指数，其中在分子量分布的较高分子量部分，长链支链降至约为零。

    Methods of preparing a polymerization catalyst
    43.
    发明授权
    Methods of preparing a polymerization catalyst 有权
    制备聚合催化剂的方法

    公开(公告)号：US08697599B2

    公开(公告)日：2014-04-15

    申请号：US13029309

    申请日：2011-02-17

    申请人： Elizabeth A. Benham ,  Max P. McDaniel ,  Kathy S. Collins ,  Stephen M. Wharry

    发明人： Elizabeth A. Benham ,  Max P. McDaniel ,  Kathy S. Collins ,  Stephen M. Wharry

    IPC分类号： B01J21/00 ,  B01J23/00 ,  C08F110/02 ,  C08F4/24

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F4/69 ,  C08F4/24 ,  C08F2500/10 ,  C08F2500/08 ,  C08F2500/12

    摘要： A method comprising (a) contacting a support and a chromium-containing compound to form chromium-containing support, (b) heat treating the chromium-containing support in an oxidizing atmosphere to form a treated support, (c) contacting the treated support with carbon monoxide to form a CO-contacted support, and (d) contacting the CO-contacted support with hydrogen to form a catalyst. A method comprising oxidizing a chromium-treated support to form a polymerization catalyst, contacting the polymerization catalyst with carbon monoxide to form a reduced polymerization catalyst, contacting the reduced polymerization catalyst with hydrogen to form an activated polymerization catalyst, and contacting the activated polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form a random copolymer. A method comprising reducing a polymerization catalyst comprising Cr(VI) to form a polymerization catalyst comprising Cr(II), and treating the polymerization catalyst comprising Cr(II) with hydrogen.

    摘要翻译： 一种方法，包括（a）使载体和含铬化合物接触以形成含铬载体，（b）在氧化气氛中热处理含铬载体以形成经处理的载体，（c）使经处理的载体与 一氧化碳以形成CO-接触的载体，和（d）使CO-接触的载体与氢接触以形成催化剂。 一种方法，包括氧化铬处理的载体以形成聚合催化剂，使聚合催化剂与一氧化碳接触以形成还原的聚合催化剂，使还原的聚合催化剂与氢接触以形成活化的聚合催化剂，并使活化的聚合催化剂与 乙烯在合适的反应条件下在反应区中形成无规共聚物。 一种包括还原包含Cr（VI）的聚合催化剂以形成包含Cr（II）的聚合催化剂并用氢气处理包含Cr（II）的聚合催化剂的方法。

    Methods of preparing a polymerization catalyst
    46.
    发明授权
    Methods of preparing a polymerization catalyst 有权
    制备聚合催化剂的方法

    公开(公告)号：US08211988B2

    公开(公告)日：2012-07-03

    申请号：US12113061

    申请日：2008-04-30

    申请人： Max P. McDaniel ,  Kathy S. Collins

    发明人： Max P. McDaniel ,  Kathy S. Collins

    IPC分类号： C08F4/24

    CPC分类号： C08F110/02 ,  C08F4/18 ,  C08F4/24 ,  C08F2500/12 ,  C08F2500/04

    摘要： A method comprising contacting a support with a chromium-containing compound and a tin-containing compound to produce a catalyst precursor, and activating the catalyst precursor in a temperature range of from about 400° C. to about 700° C. to produce a polymerization catalyst. A method comprising contacting a support with a chromium-containing compound and a tin-containing compound to produce a catalyst precursor, activating the catalyst precursor in a temperature range of from about 400° C. to about 700° C. to produce a polymerization catalyst, and contacting the polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form polyethylene wherein the molecular weight distribution of the polyethylene is broadened.

    摘要翻译： 一种方法，包括使载体与含铬化合物和含锡化合物接触以产生催化剂前体，并在约400℃至约700℃的温度范围内活化催化剂前体以产生聚合 催化剂。 一种方法，包括使载体与含铬化合物和含锡化合物接触以产生催化剂前体，在约400℃至约700℃的温度范围内活化催化剂前体以产生聚合催化剂 ，并在合适的反应条件下在反应区中使聚合催化剂与乙烯接触以形成聚乙烯，其中聚乙烯的分子量分布变宽。

    SYSTEM AND METHOD FOR CATALYST ACTIVATION
    49.
    发明申请
    SYSTEM AND METHOD FOR CATALYST ACTIVATION 有权
    催化剂活化的系统和方法

    公开(公告)号：US20110201768A1

    公开(公告)日：2011-08-18

    申请号：US12706559

    申请日：2010-02-16

    申请人： Elizabeth A. Benham ,  Max P. McDaniel

    发明人： Elizabeth A. Benham ,  Max P. McDaniel

    IPC分类号： C08F4/69 ,  B01J23/26 ,  G05D7/00

    CPC分类号： B01J37/08 ,  B01J23/26 ,  B01J37/14 ,  C08F10/00 ,  C08F4/24

    摘要： A system and method for activating chromium catalyst, including: increasing temperature of a chromium catalyst at a first rate for a first period of time to a first temperature; and increasing temperature of the chromium catalyst at a second rate for a second period of time from the first temperature to a second temperature, wherein the first rate is greater than the second rate, and wherein the first period precedes the second period.

    摘要翻译： 一种用于活化铬催化剂的体系和方法，包括：将第一时间段的铬催化剂的温度升至第一温度; 以及以第二速率将铬催化剂的温度从第一温度升至第二温度第二时间段，其中第一速率大于第二速率，并且其中第一时段在第二周期之前。