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    Long chain branched polymers and methods of making same
    1.
    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
    2.
    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
    3.
    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。

    Methods of preparing active chromium/alumina catalysts via treatment with sulfate
    7.
    发明授权
    Methods of preparing active chromium/alumina catalysts via treatment with sulfate 有权
    通过硫酸盐处理制备活性铬/氧化铝催化剂的方法

    公开(公告)号：US07214642B2

    公开(公告)日：2007-05-08

    申请号：US10829850

    申请日：2004-04-22

    申请人： Max P. McDaniel ,  Kathy S. Collins ,  Elizabeth A. Benham ,  Paul J. DesLauriers

    发明人： Max P. McDaniel ,  Kathy S. Collins ,  Elizabeth A. Benham ,  Paul J. DesLauriers

    IPC分类号： B01J27/053 ,  B01J27/188 ,  B01J21/00 ,  C01F7/02 ,  C08F4/06

    CPC分类号： C08F10/00 ,  B01J23/26 ,  B01J27/053 ,  C08F4/63916 ,  C08F4/63925 ,  C08F110/02 ,  C08F4/69 ,  C08F2500/12 ,  C08F2500/04 ,  C08F4/025 ,  C08F4/22

    摘要： Methods of preparing a polymerization catalyst are provided that include contacting a support comprising alumina with a sulfating agent and with chromium. In an embodiment in which the chromium is provided from a chromium compound such as chromium oxide, the support may be calcined after loading the sulfating agent and the chromium on the support. Alternatively, the sulfating agent can be loaded on the support while calcining it. In another embodiment in which the chromium is provided from an organochromium compound, the support may be calcined after contacting it with the sulfating agent and before contacting it with the organochromium compound. Catalysts compositions formed by the foregoing method are provided. In an embodiment, catalyst compositions comprise chromium and a sulfate treated alumina support. The catalyst compositions have an activity for ethylene polymerization that is at least about 25% greater than an activity of the same catalyst without sulfate.

    摘要翻译： 提供制备聚合催化剂的方法包括使包含氧化铝的载体与硫酸化剂和铬接触。 在其中铬由铬化合物如氧化铬提供的实施方案中，可以在将硫酸化剂和铬负载在载体上之后煅烧载体。 或者，硫酸化剂可以在煅烧时装载到载体上。 在其中铬由有机铬化合物提供的另一个实施方案中，载体可以在与硫酸化剂接触之后并在与有机铬化合物接触之前被煅烧。 提供了通过上述方法形成的催化剂组合物。 在一个实施方案中，催化剂组合物包含铬和硫酸盐处理的氧化铝载体。 催化剂组合物具有乙烯聚合的活性，其比不含硫酸盐的相同催化剂的活性大至少约25％。