1
Peijun Jiang, Armenag H Dekmezian, Kevin R Squire, Cesar A Garcia Franco: Thermoplastic elastomer polyolefin in-reactor blends and molded articles therefrom. ExxonMobil Chemical Patents, Darryl M Tyus, January 24, 2012: US08101685 (19 worldwide citation)

This invention relates to an in-reactor polymer blend comprising: (a) a first ethylene-containing polymer having a density of greater than 0.90 g/cm3 and a Mw of more than 20,000 g/mol and (b) a second ethylene-containing polymer having a density of less than 0.90 g/cm3, wherein the polymer blend ha ...


2
John R Shutt, Kevin R Squire, Abdulgaffar Vadgama: Polymerization process. ExxonMobil Chemical Patents, December 20, 2005: US06977283 (13 worldwide citation)

The present invention relates to a process for polymerizing monomer and comonomer(s) utilizing a bulky ligand transition metal metallocene-type catalyst or catalyst system, where the process is operated in the absence of or with a low amount of any of the isomers of the comonomer(s). The level of th ...


3
Vladimir Kuzunich Cherkasov, Michael Paviovich Bubnov, Nikolay Olegovich Druzhkov, Valentina Nikolavena Glushakova, Irina Alexandrovna Teplova, Nina Aleksandrovna Skorodumova, Gleb Arsent′evich Abakumov, Cynthia A Ballinger, Kevin R Squire, Jo Ann Marie Canich, Enock Berluche, Lisa Saunders Baugh, Donald Norman Schulz, Baiyi Zhao: Late transition metal catalysts for olefin polymerization and oligomerization. ExxonMobil Chemical Patents, Catherine L Bell, July 24, 2007: US07247687 (13 worldwide citation)

This invention relates to a transition metal compound represented by the formula LMX wherein M is a Group 3 to 11 metal L is a bulky bidentate or tridentate neutral ligand that is bonded to M by two or three heteroatoms and at least one heteroatom is nitrogen; X is a substituted or unsubstituted cat ...


4
Peijun Jiang, Armenag H Dekmezian, Kevin R Squire, Carlos U de Gracia, Keith Edward Jolibois, Cesar A Garcia Franco, Ronald Raymond Thackston: Thermoplastic olefin compositions. ExxonMobil Chemical Patents, Darryl M Tyus, September 20, 2011: US08022142 (12 worldwide citation)

An in-reactor polymer blend including (a) a propylene-containing first polymer; and (b) propylene-containing second polymer having a different crystallinity from the first polymer. The polymer blend has a melting temperature, Tm, of at least 135° C., a melt flow rate of at least 70 dg/min, a tensile ...


5
Kevin R Squire, Alan J Oshinski, Kevin D Robinson, Christian Peter Mehnert, Marsha M Arvedson, Beverly J Poole, Abhimanyu Onkar Patil, Lisa Saunders Baugh, Karla Schall Colle: Polymer compositions comprising cyclic olefin polymers, polyolefin modifiers, and fillers. ExxonMobil Chemical Patents, Darryl M Tyus, January 1, 2013: US08344070 (8 worldwide citation)

A polymer composition comprises (a) least 40 wt % (based upon the weight of the composition) of a cyclic olefin polymer comprising at least one acyclic olefin and at least 20 wt % of one or more cyclic olefins (based upon the weight of the cyclic olefin polymer), wherein at least a portion of the cy ...


6
Joseph N Christopher, Kevin R Squire, Jo Ann M Canich, Timothy D Shaffer: Cationic group 3 catalyst system. Exxon Mobil Chemical Patents, Charles E Runyan, June 11, 2002: US06403773 (4 worldwide citation)

A cationic Group 3 or Lanthanide metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by a monoanionic bidentate ancillary ligand and two monoanionic ligands. The ancillary ligand and the transition metal form a metallocycle having at least ...


7
Carlos U De Gracia, Kevin R Squire, Peijun Jiang, Armenag H Dekmezian, Beverly J Poole, Cesar A Garcia Franco: Heterogeneous in-reactor polymer blends. ExxonMobil Chemical Patents, Darryl M Tyus, January 31, 2012: US08106127 (3 worldwide citation)

An in-reactor polymer blend comprises (a) a propylene-containing first polymer; and (b) an ethylene-containing second polymer such that the polymer blend comprises between about 50 wt % and about 80 wt % units derived from ethylene and between about 50 wt % and about 20 wt % units derived from propy ...


8
Joseph N Christopher, Kevin R Squire, Jo Ann M Canich, Timothy D Shaffer: Cationic group 3 catalyst system. ExxonMobil Chemical Patents, C P Schmidt, C L Bell, January 13, 2004: US06677441 (1 worldwide citation)

A cationic Group 3 or Lanthanide metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by a monoanionic bidentate ancillary ligand and two monoanionic ligands. The ancillary ligand and the transition metal form a metallocycle having at least ...


9
Peijun Jiang, Kevin R Squire, Charles J Ruff, Cesar A Garcia Franco: In-reactor polymer blends. ExxonMobil Chemical Patents, Darryl M Tyus, Catherine L Bell, October 16, 2012: US08288480 (1 worldwide citation)

This invention relates to in-reactor polymer blends comprising at least 60 mole % of propylene and from 0.01 to 10 mole % of at least one diene selected from the group of C6 to C12 α,ω-diene, norbornadiene, vinyl norbornene and mixtures thereof with the balance being ethylene. The blend comprises fi ...


10
Joseph N Christopher, Kevin R Squire, Jo Ann M Canich, Timothy D Shaffer: Cationic group 3 catalyst system. ExxonMobil Chemical Patents, January 10, 2006: US06984722

A cationic Group 3 or Lanthanide metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by a monoanionic bidentate ancillary ligand and two monoanionic ligands. The ancillary ligand and the transition metal form a metallocycle having at least ...