1
Qing Yang, Michael D Jensen, Joel L Martin, Matthew G Thorn, Max P McDaniel, Youlu Yu, David C Rohlfing: Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching. Chevron Phillips Chemical Company, Merchant & Gould P C, April 14, 2009: US07517939 (110 worldwide citation)

This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging η5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclose ...


2
Max P McDaniel, Kathy S Collins, Gil R Hawley, Michael D Jensen, Christopher E Wittner, Elizabeth A Benham, Anthony P Eaton, Joel L Martin, David C Rohlfing, Youlu Yu: Organometal compound catalyst. Phillips Petroleum Company, Womble Carlyle Sandridge & Rice PLLC, December 21, 2004: US06833338 (49 worldwide citation)

This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises contact ...


3
Michael D Jensen, Joel L Martin, Max P McDaniel, David C Rolfing, Qing Yang, Matthew G Thorn, Ashish M Sukhadia, Youlu Yu, Jerry T Lanier: Polymerization catalysts for producing polymers with low levels of long chain branching. Chevron Phillips Chemical Company, Womble Carlyle Sandridge & Rice PLLC, December 12, 2006: US07148298 (47 worldwide citation)

This invention relates to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene with bridging η5-cyclopentadienyl-type ligands, in combination with a cocatalyst and an activator-support. The compositions and methods disclosed herein provide ethylene polymers with low levels ...


4
Qing Yang, Michael D Jensen, Joel L Martin, Matthew G Thorn, Max P McDaniel, Youlu Yu, David C Rohlfing: Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching. Cheveron Phillips Chemical Company, Merchant & Gould, January 26, 2010: US07652160 (37 worldwide citation)

This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging η5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclose ...


5
Qing Yang, Michael D Jensen, Joel L Martin, Matthew G Thorn, Max P McDaniel, Youlu Yu, David C Rohlfing: Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching. Chevron Phillips Chemical Company, Merchant & Gould P C, June 8, 2010: US07732542 (34 worldwide citation)

This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging η5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclose ...


6
Qing Yang, Max P McDaniel, Tony R Crain, Youlu Yu: Catalysts for producing broad molecular weight distribution polyolefins in the absence of added hydrogen. Chevron Phillips Chemical Company, Merchant & Gould P C, October 16, 2012: US08288487 (34 worldwide citation)

The present invention provides a polymerization process utilizing a dual metallocene catalyst system for the production of broad or bimodal molecular weight distribution polymers, generally, in the absence of added hydrogen. Polymers produced from the polymerization process are also provided, and th ...


7
Youlu Yu, Max P McDaniel, Kathy S Collins, Gil R Hawley, Michael D Jensen, Christopher E Wittner, Elizabeth A Benham, Anthony P Eaton, Joel L Martin, David C Rohlfing: Organometal compound catalyst. Phillips Petroleum Company, Merchant & Gould PC, August 26, 2008: US07417097 (21 worldwide citation)

This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises contact ...


8
Michael D Jensen, Joel L Martin, Max P McDaniel, David C Rolfing, Qing Yang, Matthew G Thorn, Ashish M Sukhadia, Youlu Yu, Jerry T Lanier: Polymerization catalysts for producing polymers with low levels of long chain branching. Chevron Phillips Chemical Company, Merchant & Gould P C, December 30, 2008: US07470758 (20 worldwide citation)

This invention relates to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene with bridging η5-cyclopentadienyl-type ligands, in combination with a cocatalyst and an activator-support. The compositions and methods disclosed herein provide ethylene polymers with low levels ...


9
Qing Yang, Max P McDaniel, Tony R Crain, Youlu Yu, Yongwoo Inn: Catalyst system with three metallocenes for producing broad molecular weight distribution polymers. Chevron Phillips Chemical Company, Merchant & Gould P C, December 16, 2014: US08912285 (16 worldwide citation)

Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes use a catalyst system containing three metallocene components, often resulting in polymers having a reverse comonomer distribution and a broad and non-bimodal molecular weight distribu ...


10
Leon E St Pierre, George R Brown, Gaoming Wu, Youlu Yu: Ferric ion coordinated polyamine resins for the lowering of blood cholesterol. Lowchol Scientific, Swabey Ogilvy Renault, May 19, 1992: US05114709 (16 worldwide citation)

The invention is concerned with a metal ion coordinated polyamine resin in which a non-toxic, pharmaceutically acceptable chelating metal ion is coordinated with a cross-linked and non-digestible polymeric amine selected from the group consisting of: (a) polyamine resins with a hydrophilic backbone, ...