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    • 3. 发明申请
    • Methods of Preparing a Polymerization Catalyst
    • 制备聚合催化剂的方法
    • US20110136996A1
    • 2011-06-09
    • US13029309
    • 2011-02-17
    • Elizabeth A. BENHAMMax P. MCDANIELKathy S. COLLINSStephen M. WHARRY
    • Elizabeth A. BENHAMMax P. MCDANIELKathy S. COLLINSStephen M. WHARRY
    • C08F4/22B01J21/08B01J37/16B01J37/08
    • C08F10/02C08F110/02C08F4/69C08F4/24C08F2500/10C08F2500/08C08F2500/12
    • 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.
    • 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。
    • 6. 发明申请
    • Polymer Resins Having Improved Barrier Properties and Methods of Making Same
    • 具有改善阻隔性能的聚合物树脂及其制备方法
    • US20120058324A1
    • 2012-03-08
    • US12875373
    • 2010-09-03
    • Guylaine ST. JEANQing YANGChung TSOMax P. MCDANIEL
    • Guylaine ST. JEANQing YANGChung TSOMax P. MCDANIEL
    • C08F4/42C08F4/00C08F110/02
    • C08L23/04C08L2205/02C08L2666/06
    • A polymeric resin having a lower molecular weight (LMW) component and a higher molecular weight (HMW) component and the resin having a density of from about 0.955 g/cc to about 0.967 g/cc, a melt index of from about 0.5 dg/min to about 4.0 dg/min, and a zero shear viscosity of from about 3.0×103 Pa-s to about 4.0×104 Pa-s. A method comprising providing a catalyst system comprising at least one transition metal complex, an activator support, and a cocatalyst; contacting the catalyst system with an olefin under conditions suitable to form a polyolefin, wherein the polyolefin has a HMW component and a LMW component; and recovering the polyolefin, wherein the polyolefin has a melt index of from about 0.5 dg/min to about 4.0 dg/min, and a zero shear viscosity of from about 3.0×103 Pa-s to about 4.0×104 Pa-s.
    • 具有较低分子量(LMW)组分和较高分子量(HMW)组分的聚合物树脂,该树脂的密度为约0.955g / cc至约0.967g / cc,熔体指数为约0.5dg / min至约4.0dg / min,零剪切粘度为约3.0×10 3 Pa·s至约4.0×10 4 Pa·s。 一种包括提供包含至少一种过渡金属络合物,活化剂载体和助催化剂的催化剂体系的方法; 在适于形成聚烯烃的条件下使催化剂体系与烯烃接触,其中聚烯烃具有HMW组分和LMW组分; 并回收聚烯烃,其中聚烯烃的熔体指数为约0.5dg / min至约4.0dg / min,零剪切粘度为约3.0×10 3 Pa〜s至约4.0×10 4 Pa·s。