Polymerization With Metallocene Catalysts Patents (Class 526/943)
  • Patent number: 8853339
    Abstract: This invention relates to a method for producing a copolymer of a conjugated diene compound and an unconjugated olefin other than the conjugated diene compound having a high cis-1,4 bond content of a conjugated diene compound portion, and more particularly to a method for producing a copolymer characterized by comprising a step of polymerizing a conjugated diene compound and an unconjugated olefin other than the conjugated diene compound in the presence of a polymerization catalyst composition including at least one complex selected from a metallocene complex represented by the following general formula (I): (wherein M is a lanthanoid element, scandium or yttrium, and CpR is independently a non-substituted or substituted indenyl, and Ra-Rf are independently an alkyl group having a carbon number of 1-3 or a hydrogen atom, and L is a neutral Lewis base, and w is an integer of 0-3) and so on.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: October 7, 2014
    Assignee: Bridgestone Corporation
    Inventors: Shojiro Kaita, Olivier Tardif, Yasuo Horikawa
  • Patent number: 8846835
    Abstract: A scavenger is used to indirectly control the ratio of polymer components in a polyethylene composition made using a combination catalyst comprising an inorganic chromium catalyst, and a group 4 single site catalyst.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: September 30, 2014
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Victoria Ker, Peter Phung Minh Hoang, Yan Jiang, Yves Lacombe
  • Patent number: 8841393
    Abstract: Catalyst compositions for the polymerization of olefins having improved flowability properties are provided.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: September 23, 2014
    Assignee: Univation Technologies, LLC
    Inventors: Chi-I Kuo, Agapios Kyriacos Agapiou, David M. Glowczwski, Ghanshyam Ganu H. Patel
  • Patent number: 8841394
    Abstract: This invention relates to a vinyl terminated higher olefin copolymer having an Mn of 300 g/mol or more (measured by 1H NMR) comprising: (i) from about 20 to about 99.9 mol % of at least one C5 to C40 higher olefin monomer; and (ii) from about 0.1 to about 80 mol % of propylene; wherein the higher olefin copolymer has at least 40% allyl chain ends. The copolymer may also have an isobutyl chain end to allyl chain end ratio of less than 0.7:1 and/or an allyl chain end to vinylidene chain end ratio of greater than 2:1.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: September 23, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Matthew W. Holtcamp, John R. Hagadorn, Charles J. Ruff, George Rodriguez, Patrick Brant
  • Patent number: 8835588
    Abstract: The present invention provides dual catalyst systems containing a metallocene catalyst and a hydrogen scavenging catalyst, and polymerization processes employing these dual catalyst systems. Due to a reduction in hydrogen levels in the polymerization processes, olefin polymers produced from these polymerization processes may have a higher molecular weight, a lower melt index, and higher levels of unsaturation.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: September 16, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, William B. Beaulieu, Qing Yang, Errun Ding, Gary L. Glass, Alan L. Solenberger, Steve J. Secora
  • Patent number: 8835587
    Abstract: Provided are catalyst systems, processes for polymerizing one or more olefins, polymers resulting therefrom, and articles prepared from such polymers. The processes comprise contacting under polymerization conditions one or more olefin monomers, preferably propylene, with a catalyst system comprising a transition metal compound and an activator of the formula (1) or (2) as described herein. The polymer compositions described herein exhibit advantageously narrow composition distributions and high melting points in comparison to conventional polymers having the same comonomer content. The polymers described herein exhibit improved properties, e.g., pellet stability, impact properties, heat seal properties, and structural integrity in film and fabricated parts applications.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: September 16, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowthers, Peijun Jiang, Rainer Kolb
  • Patent number: 8835577
    Abstract: A polymerization catalyst system and polymerization processes using the catalyst systems are disclosed. The polymerization catalyst systems may include a) a first catalyst compound, and b) a second catalyst compound, wherein the first catalyst compound comprises a biphenyl phenol compound having essentially no hydrogen response.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: September 16, 2014
    Assignee: Univation Technologies, LLC
    Inventors: Francis C. Rix, Sun-Chueh Kao, Rainer Kolb, Dongming Li, Cesar A. Garcia-Franco
  • Patent number: 8829128
    Abstract: Process for the preparation of a polypropylene, wherein propylene is polymerized optionally with a comonomer selected from the group consisting of ethylene, a C4-C20 ?-olefin and mixtures thereof, in the presence of a catalyst system comprising solid catalyst particles, wherein the solid catalyst particles (a) comprise a transition metal compound of formula (I) LmRnMXq (I) wherein “M” is a transition metal of anyone of the groups 3 to 10 of the periodic table (IUPAC), each “X” is independently a monovalent anionic ?-ligand, each “L” is independently an organic ligand which coordinates to the transition metal (M), each “R” is a bridging group linking two organic ligands (L), “m” is 2 or 3, preferably 2, “n” is 0, 1 or 2, preferably 1, “q” is 1, 2 or 3, preferably 2, m+q is equal to the valency of the transition metal (M), (c) comprise a cocatalyst (Co) comprising an element (E) of group 13 of the periodic table (IUPAC), preferably a cocatalyst (Co) comprising a compound of A1, wherein further the loss of activ
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: September 9, 2014
    Assignee: Borealis AG
    Inventors: Lauri Huhtanen, Kalle Kallio, Pascal Castro
  • Patent number: 8828901
    Abstract: Process for the preparation of a solid catalyst system comprising the steps of generating an emulsion by dispersing a liquid clathrate in a solution wherein (i) the solution constitutes the continuous phase of the emulsion and (ii) the liquid clathrate constitutes in form of droplets the dispersed phase of the emulsion, solidifying said dispersed phase to convert said droplets to solid particles and optionally recovering said particles to obtain said catalyst system, wherein the liquid clathrate comprises a lattice being the reaction product of aluminoxane, an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, and a further compound being effective to form with the aluminoxane and the organometallic compound the lattice, and a guest being an hydrocarbon compound, and the solution comprises a silicon fluid and a hydrocarbon solvent.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: September 9, 2014
    Assignee: Borealis AG
    Inventors: Kalle Kallio, Marja Mustonen, Pertti Elo, John Severn, Peter Denifl
  • Patent number: 8821800
    Abstract: Techniques are provided for catalyst preparation. A system for catalyst preparation may include an agitator disposed inside a polymerization catalyst tank and configured to mix a polymerization catalyst and a solvent to generate a polymerization catalyst solution. The system may also include a heating system coupled to the polymerization catalyst tank and configured to maintain a temperature of the polymerization catalyst solution above a threshold. The system may also include a precontactor configured to receive feed streams comprising an activator and the polymerization catalyst solution from the polymerization catalyst tank to generate a catalyst complex. The system may also include a transfer line configured to transfer the catalyst complex from an outlet of the precontactor to a reactor.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: September 2, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Elizabeth A Benham, Albert P Masino, Qing Yang, Randy S Muninger, Rebecca A Gonzales
  • Patent number: 8822611
    Abstract: Rotomoulded articles and methods of forming the same are described herein. The rotomoulded articles generally have a permeability of less than 1 g/day. The rotomoulded articles generally include polyethylene obtained by injecting into a reactor a catalyst system including a metallocene catalyst component of specific formula and an activating agent; injecting into the reactor ethylene monomer at a concentration of at least 6.5 wt %; injecting an amount of hydrogen such that a ratio of hydrogen to ethylene (H2/C2) in the feed is less than 85 g/106 g; maintaining the reactor under polymerisation conditions at a temperature of less than 90° C.; and retrieving polyethylene exhibiting a melt index (MI2) of at least 3.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: September 2, 2014
    Assignee: Total Research & Technology Feluy
    Inventor: Eric Maziers
  • Patent number: 8822365
    Abstract: Process for the preparation of a solid olefin polymerization catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) in the form of solid particles comprising the steps of I) generating an emulsion by dispersing a liquid clathrate in a solvent (S) wherein (i) the solvent (S) constitutes the continuous phase of the emulsion and comprises a nonreactive fluorinated synthetic oil having a viscosity at 20° C.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: September 2, 2014
    Assignee: Borealis AG
    Inventors: Jenni Valonen, Marja Mustonen
  • Patent number: 8816027
    Abstract: This invention relates to a homogenous process for making a vinyl terminated propylene polymer, wherein the process comprises: contacting, propylene, under polymerization conditions, with a catalyst system comprising an activator and at least one metallocene compound, where the metallocene compound is represented by the formula: where: M is hafnium or zirconium; each X is a group bound to M as described herein; each R1 and R2 is, independently, a C1 to C10 alkyl group; each R3 is, independently, hydrogen; each R4, R5, and R6, is, independently, hydrogen or a substituted or unsubstituted hydrocarbyl group, a heteroatom or heteroatom containing group; T is a bridging group as described herein; and further provided that any of adjacent R4, R5, and R6 groups may form a fused ring or multicenter fused ring system where the rings may be aromatic, partially saturated or saturated, wherein the activator comprises a non-coordinating anion.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: August 26, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Patrick Brant, Carlos U. De Garcia, Jacqueline A. Lovell
  • Patent number: 8815357
    Abstract: A metallocene-catalyzed polymer comprising (i) a higher molecular weight component and (ii) a lower molecular weight component wherein the polymer has a polydispersity index of from about 10 to about 26; a zero shear viscosity of from about 5×105 Pa·s to about 2×1014 Pa·s and a smooth-to-matte transition critical stress of from about 20 kPa to about 85 kPa at a shear rate of from about 1.5 s?1 to about 17 s?1. A dual metallocene catalyzed polyethylene comprising (i) a higher molecular weight component and (ii) a lower molecular weight component wherein the polymer has a polydispersity index of from about 10 to about 26; a zero shear viscosity of from about 5×105 Pa·s to about 2×1014 Pa·s and a smooth-to-matte transition stress of from about 20 kPa to about 85 kPa at a shear rate of from about 1.5 s?1 to about 17 s?1.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: August 26, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Yongwoo Inn, Qing Yang
  • Patent number: 8809462
    Abstract: An ethylene-?-olefin copolymer comprising monomer units derived from ethylene and monomer units derived from an ?-olefin having 3 to 20 carbon atoms, having a density (d) of 860 to 950 kg/m3, having a melt flow rate (MFR) of 0.01 to 100 g/10 min, having a bimodal molecular weight distribution, and having a single melting peak measured by a differential scanning calorimeter (DSC).
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: August 19, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshinobu Nozue, Naoko Ochi
  • Patent number: 8802797
    Abstract: Vinyl-terminated macromonomer oligomerization, namely, a process to produce polymacromonomers comprising contacting a vinyl-terminated macromonomer with a catalyst system capable of oligomerizing vinyl-terminated macromonomer, in the presence of an aluminum containing compound, a zinc containing compound, or a combination thereof, under polymerization conditions to produce a polymacromonomer, and polymacromonomers produced thereby. Also, polymacromonomers having a degree of polymerization greater than 10, a glass transition temperature Tg of less than 60° C., and an Mn of greater than or equal to about 5000 Da.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: August 12, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R Hagadorn, Patrick Brant, Robbert Duchateau, Rafael Sablong
  • Patent number: 8791042
    Abstract: Process for the preparation of an unsupported, heterogeneous olefin polymerization catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) in the form of solid particles comprising the steps of a) preparing a solution (A) comprising ai) an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, a2) a cocatalyst comprising an element of group 13 of the Periodic Table (IUPAC 2007) and a3) a solvent (A-1), b) preparing a liquid/liquid emulsion system by dispersing the solution (A) in a solvent (B) essentially immiscible with said solution (A) in the presence of a polystyrene-b-fluoro polystyrene copolymer of the formula (I) in which n is a number from 10 to 100, m is a number from 1 to 40, x is a number from 5 to 16, y is a number from 11 to 33, provided that m, n, x and y are selected in a way that the block copolymer is soluble in the solvent B or the solution A in
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: July 29, 2014
    Assignee: Borealis AG
    Inventors: Nicolas Ronan, Peter Denifl
  • Patent number: 8785575
    Abstract: A polymerization process comprising contacting under polymerization conditions ethylene and at least propylene to obtain a copolymer containing from 96% by mol to 71% by mol of ethylene derived units, in the presence of a catalyst system obtainable by contacting: b) at least a metallocene compound of formula (I), b) alumoxane or a compound capable of forming an alkyl metallocene cation; and optionally c) an organo aluminum compound; wherein the groups R1-R4, L, M and W are described in the text.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: July 22, 2014
    Assignee: Basell Polyolefine GmbH
    Inventors: Luigi Resconi, Francesca Focante
  • Patent number: 8785574
    Abstract: According to the invention, a single or plural kinds of bridged metallocene compounds having differing cyclopentadienyl-derived groups afford macromonomers that are a source of long-chain branches and simultaneously catalyze the repolymerization of the macromonomers into olefin polymers having a large number of long-chain branches, small neck-in in the T-die extrusion, small take-up surge and superior mechanical strength. The olefin polymerization catalysts and the polymerization processes can efficiently produce the olefin polymers.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: July 22, 2014
    Assignees: Mitsui Chemicals, Inc., Prime Polymer Co., Ltd.
    Inventors: Hideki Bando, Yasuo Satoh, Takashi Yukita, Yasuyuki Harada, Yoshiho Sonobe, Yasushi Tohi, Yusuke Sekioka, Masao Suzuki, Daisuke Tanifuji
  • Patent number: 8759243
    Abstract: Embodiments of the invention generally include multi-component catalyst systems, polymerization processes and heterophasic copolymers formed by the processes. The multi-component catalyst system generally includes a first catalyst component selected from Ziegler-Natta catalyst systems including a diether internal electron donor and a metallocene catalyst represented by the general formula XCpACpBMAn, wherein X is a structural bridge, CpA and CpB each denote a cyclopentadienyl group or derivatives thereof, each being the same or different and which may be either substituted or unsubstituted, M is a transition metal and A is an alkyl, hydrocarbyl or halogen group and n is an integer between 0 and 4.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: June 24, 2014
    Assignee: Fina Technology, Inc.
    Inventors: Tim Coffy, Michel Daumerie, Kenneth Blackmon, William J. Gauthier, Jun Tian, Joseph L. Thorman
  • Patent number: 8759246
    Abstract: The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins also are provided.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: June 24, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Errun Ding, Joel L. Martin, Albert P. Masino, Qing Yang, Youlu Yu
  • Patent number: 8754177
    Abstract: The invention relates to a polymerization process, the polymerization process includes contacting a cyclic bridged metallocene catalyst represented by the following formula: LA(A)LBMQn wherein A is a divalent group bound to each of LA and LB; each of LA and LB are bound to M, and each Q is bound to M; LA and LB are independently selected from the group consisting of cyclopentadienyl ligands and substituted cyclopentadienyl ligands; A is a divalent bridging group comprising a heterocyclic ring comprising from 3 to 6 carbon atoms and one silyl, thus forming a 4 to 7 member divalent ring; M is a Group 4, 5, or 6 transition metal; Q is independently a halogen, a hydride, or a hydrocarbyl radical having from 1 to 20 carbon atoms; wherein n is 1 or 2; with an activator, and optionally a support, to form an activated catalyst and, subsequently, contacting the activated catalyst with ethylene and optionally, at least one C3-C8 alpha olefin comonomer.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: June 17, 2014
    Assignee: Univation Technologies, LLC
    Inventors: Donna J. Crowther, John F. Szul
  • Patent number: 8748546
    Abstract: The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: June 10, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Albert P. Masino, Rex E. Murray, Qing Yang, Steve J. Secora, Kumudini C. Jayaratne, William B. Beaulieu, Errun Ding, Gary L. Glass, Alan L. Solenberger, Ted H. Cymbaluk
  • Patent number: 8742039
    Abstract: A method for making a polyolefin composition according to one embodiment includes altering the concentration of the chain transfer agent present in the reactor to control the HMW and LMW fractions of the polyolefin composition.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: June 3, 2014
    Assignee: Univation Technologies, LLC
    Inventors: Mark B. Davis, Sun-Chueh Kao, Tae Hoon Kwalk
  • Patent number: 8742042
    Abstract: A polymerization process comprising contacting under polymerization conditions ethylene and at least one alpha olefin of formula CH2=CHA wherein A is a C2-C20 alkyl radical to obtain a copolymer containing from 95% by mol to 50% by mol of ethylene derived units in the presence of a catalyst system obtainable by contacting: b) at least a metallocene compound of formula (I) b) alumoxane or a compound capable of forming an alkyl metallocene cation; and optionally c) an organo aluminum compound; wherein the groups R1-R4, L, M and W are described in the text.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: June 3, 2014
    Assignee: Basell Polyolefine GmbH
    Inventors: Francesca Focante, Luigi Resconi
  • Patent number: 8742041
    Abstract: Processes for the polymerization of olefins with extracted metal carboxylate salts are provided. The polymerization processes have increased productivity and/or increased resin bulk density.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: June 3, 2014
    Assignee: Univation Technologies, LLC
    Inventors: R. Eric Pequeno, Fathi David Hussein, Kevin Joseph Cann, Chi-I Kuo, Bruce Jon Savatsky, Eric J. Markel, Daniel Paul Zilker, Jr., Agapios Kyriacos Agapiou, David M. Glowczwski
  • Patent number: 8742043
    Abstract: Disclosed herein is a group IV transition metal catalyst for producing an ethylene homopolymer or an ethylene-olefin copolymers, having high catalytic activity, which includes a cyclopentadiene derivative and one or more anionic ligands having an aryl group substituted with an aryl derivative at an ortho-position thereof around a transition metal, the ligands not being crosslinked to each other, a catalyst system including the group IV transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst, and a method of producing ethylene homopolymers or ethylene-olefin copolymers using the catalyst system.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: June 3, 2014
    Assignee: SK Innovation Co., Ltd.
    Inventors: Myung Ahn Ok, Dae Ho Shin, Jong Sok Hahn, Ho Seong Lee, Sang Ook Kang, Sung Kwan Kim
  • Patent number: 8735312
    Abstract: The present invention relates to a catalyst composition and a process for preparing an olefin polymer using the same. More specifically, the present invention relates to a novel catalyst composition comprising at least two types of catalysts and a process for preparing an olefin polymer having excellent heat resistance using the same. The present invention can provide an olefin polymer having excellent activity and high heat resistance, and also can control the values of density, heat resistance and melt index (MI) of the olefin polymer.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: May 27, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Kyung-Seop Noh, Hoon Chae, Cheon-Il Park, Won-Hee Kim, Sang-Jin Jeon, Eun-Jung Lee, Choong-Hoon Lee, Jong-Joo Ha
  • Patent number: 8735519
    Abstract: The invention is directed to a metallocene catalyst system and a process for preparing the system. The metallocene catalyst system comprises a support and metallocene bound substantially throughout the support. The selection of certain supports facilitates the production of metallocene catalyst systems having increased catalytic activity than previously recognized.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: May 27, 2014
    Assignee: Fina Technology, Inc.
    Inventors: Jun Tian, William Gauthier, David Rauscher, Shady Henry
  • Patent number: 8735502
    Abstract: This invention relates to a functionalized co-oligomer having an Mn of 300 to 30,000 g/mol comprising 10 to 90 mol % propylene and 10 to 90 mol % of ethylene, wherein the oligomer has at least X % allyl chain ends, where: 1) X=(?0.94 (mole % ethylene incorporated)+100), when 10 to 60 mole % ethylene is present in the co-oligomer, and 2) X=45, when greater than 60 and less than 70 mole % ethylene is present in the co-oligomer, and 3) X=(1.83*(mole % ethylene incorporated)?83), when 70 to 90 mole % ethylene is present in the co-oligomer. This invention also relates to a functionalized homo-oligomer, comprising propylene, wherein the oligomer has: at least 93% allyl chain ends, an Mn of about 500 to about 20,000 g/mol, an isobutyl chain end to allylic vinyl group ratio of 0.8:1 to 1.2:1.0, and less than 100 ppm aluminum. This invention also relates to a process of making functionalized homo- or co-oligomer, comprising propylene, wherein the productivity is greater than 4500 g/mmol Hf (or Zr)/hour.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: May 27, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick Brant, Donna J. Crowther
  • Patent number: 8729284
    Abstract: A method for producing an anionized meso-form double-cross-linked ligand represented by formula (3), including: bringing a compound represented by formula (1) into contact with a compound represented by formula (2) at ?25° C. or less; and introducing an anionizing agent within 5 hours after the contact, wherein R1 to R10 are independently a hydrogen atom, a hydrocarbon group having 1 to 20 carbon atoms, or the like; A and A? are independently a cross-linking group containing an atom belonging to the 14th group of the periodic table; M and M? are independently an atom belonging to the 1st or the 2nd group of the periodic table.
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: May 20, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Minoru Yabukami, Takuji Okamoto
  • Patent number: 8729206
    Abstract: A polypropylene homopolymer with a melting point of less than 147° C., a percentage of 2.1 errors of at least 1% and a xylene soluble fraction of less than 0.5 wt %.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: May 20, 2014
    Assignee: Borealis AG
    Inventors: Luigi Resconi, Pascal Castro, Lauri Huhtanen, Norbert Hafner
  • Patent number: 8729182
    Abstract: A nanoparticle composition comprising a substrate comprising a metal oxide component and an aluminum oxide component; and a metallocene olefin polymerization catalyst component coupled to the substrate is disclosed. The metal oxide component is homogenously dispersed throughout the nanocomposite composition.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: May 20, 2014
    Assignees: Northwestern University, The Penn State Research Foundation
    Inventors: Tobin J. Marks, Michael T. Lanagan, Neng Guo, Sara A. DiBenedetto
  • Patent number: 8716414
    Abstract: The present invention relates to a mixed metallocene catalyst composition including a first metallocene catalyst and a second metallocene catalyst, and a method for preparing a polyolefin using the catalyst composition. According to the catalyst composition and the preparation method, provided is a polyolefin having a wide molecular weight distribution and superior mechanical properties and processability.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: May 6, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Jong-Joo Ha, Choong-Hoon Lee, Don-Ho Kum, Eun-Jung Lee, Beom-Doo Seo
  • Patent number: 8716415
    Abstract: The present invention provides a method for preparing a supported metallocene catalyst, a supported metallocene catalyst prepared by the method, and a method for preparing a polyolefin using the supported metallocene catalyst. The supported metallocene catalyst according to the present invention contains catalyst components uniformly distributed deep into the whole porous carrier particles to secure a high catalytic activity and facilitates polymerization of polyolefins with high bulk density.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: May 6, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Hyeon-Gook Kim, Ki-Soo Lee, Eun-Kyoung Song, Yong-Ho Lee, Dae-Sik Hong
  • Patent number: 8716418
    Abstract: A process for producing a syndiotactic ?-olefin polymer having high racemic diad fraction and high molecular weight with excellent polymerization activity through a method permitting high-temperature polymerization. The production process comprises polymerizing a monomer that comprises at least one C3-10 ?-olefin and a small amount of ethylene, in the presence of an olefin polymerization catalyst comprising a transition metal compound (A) represented by the general formula [1], at least one compound (B) selected from an organoaluminum oxy-compound (b-1), a compound (b-2) that reacts with the transition metal compound (A) to form an ion pair and an organoaluminum compound (b-3), which process for producing a syndiotactic ?-olefin polymer satisfies the relationship: 0.001?PE/PO?0.030, provided that the molar amounts of ethylene and an ?-olefin having 3 to 10 carbon atoms that are fed into a polymerization reactor under a polymerization temperature of not lower than 25° C. are PE and PO, respectively.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: May 6, 2014
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Masayoshi Yamamoto, Takashi Yukita, Masahiro Yamashita, Hiromu Kaneyoshi
  • Patent number: 8691715
    Abstract: The present invention provides a polymerization process utilizing a dual ansa-metallocene catalyst system. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, a non-bimodal molecular weight distribution, a ratio of Mw/Mn from about 3 to about 8, and a ratio of Mz/Mw from about 3 to about 6.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: April 8, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, William B. Beaulieu, Joel L. Martin, Tony R. Crain
  • Patent number: 8692009
    Abstract: The present invention relates to a novel metallocene compound, a catalyst composition comprising the same, and to olefinic polymers produced using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used when producing olefinic polymers, have outstanding copolymerization properties, and can produce olefinic polymers of high molecular weight. In particular, when the metallocene compound according to the present invention is employed, highly heat resistant block copolymers can be produced, and olefinic polymers can be produced which have a high melting point (Tm) even if the comonomer content is increased when producing the olefinic polymer.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: April 8, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Yong Ho Lee, Manseong Jeon, Ki-Soo Lee, Heon-Yong Kwon, Min-Seok Cho, Jong-Sang Park, Joon Hee Cho, Hyeon-Gook Kim, Eunkyoung Song, Seon-Kyoung Kim, Dae-Sik Hong
  • Patent number: 8680001
    Abstract: The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises: a) firstly combining the finely divided support with the aluminoxane and subsequently b) adding the reaction product of a metallocene compound with at least one organometallic compound to the modified support, catalyst solids obtainable by this process, catalyst systems comprising these catalyst solids, their use for the polymerization of olefins and a process for the polymerization of olefins.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: March 25, 2014
    Assignee: Basell Polyolefine GmbH
    Inventors: Heike Gregorius, Volker Fraaije, Manfred Lutringshauser
  • Patent number: 8674026
    Abstract: Disclosed are an ethylene polymerization process, a catalyst for use in the process, a production method employing the catalyst, and a product produced thereby. More specifically, disclosed is a process of producing an ethylene copolymer from ethylene and an alpha-olefin comonomer, in which the produced ethylene copolymer has a multimodal molecular weight distribution and excellent processability and physical properties, and thus can increase the value and productivity of products, including pipes and films. Particularly, the produced ethylene copolymer has a trimodal or higher molecular weight distribution or density distribution, and thus, when it is a linear low-density copolymer, it has an excellent effect of improving the impact strength of films, and when it is a medium-density ethylene copolymer, it can be produced into pipes, which have slow crack growth rate and can be used even at high temperature.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: March 18, 2014
    Assignee: SK Innovation Co., Ltd.
    Inventors: Choon Sik Shim, Hyeong Taek Ham, Sung Seok Chae, Dae Ho Shin, Seung Bum Kwon, Jong Sok Hahn, Myung Ahn Ok
  • Patent number: 8664461
    Abstract: This invention is directed to new mono-cyclopentadienyl (“mono-Cp”) metallocene catalyst compounds useful for producing high viscosity PAOs with narrow molecular weight distribution and good shear stability. Specifically, this invention relates to a group of bridged mono-Cp catalysts wherein, in an embodiment of the invention, the aromatic ring structure is substituted with: 1) at least one phenyl group, 2) at least one alkyl group, and 3) at least one other group, such as a hydrocarbyl group, a heteroatom, or a heteroatom-containing group.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: March 4, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Bruce A. Harrington, Abhimanyu O. Patil, Donna J. Crowther, Phillip T. Matsunaga, Kevin B. Stavens, Catalina L. Coker
  • Patent number: 8664140
    Abstract: Process for supportation of a catalyst system comprising at least two different active catalyst components on a support wherein in an earlier supportation step a first active catalyst component is applied to the support at a first predetermined temperature and in a later supportation step a second active catalyst component is applied to the support at a temperature which is at least 20° C. lower than the first predetermined temperature.
    Type: Grant
    Filed: December 12, 2009
    Date of Patent: March 4, 2014
    Assignee: Basell Polyolefine GmbH
    Inventors: Harald Schmitz, Fabiana Fantinel, Jürgen Hilz, Shahram Mihan
  • Patent number: 8658556
    Abstract: This invention relates to a method to polymerize olefins comprising contacting olefins with a catalyst system comprising a transition metal catalyst compound and: 1) at least two NCA activators represented by the formula: Zd+ (Ad-), where Z is a Bronsted acid or a reducible Lewis acid, Ad- is a boron containing NCA, d is 1, 2, or 3, and where Z is a Bronsted acid and Z is a reducible Lewis acid in the first and second NCA activators, respectively; or 2) at least two NCA activators, one as described in Formula I and one not as described in Formula I; or 3) two NCA activators as described in Formula I except that the N in the second NCA in the ArNHal is at a different position in the nitrogen containing aromatic ring than the N in the first NCA.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: February 25, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Ian C. Stewart
  • Patent number: 8653290
    Abstract: Disclosed are a metallocene complex represented by the general formula (I), (II) or (III), and a polymerization catalyst composition containing such a metallocene complex. In the formulae (I), (II) and (III), M represents a lanthanoid element, scandium or yttrium; CpR independently represents an unsubstituted or substituted indenyl; CpR? represents an unsubstituted or substituted cyclopentadienyl, indenyl or fluorenyl; Ra-Rf independently represents a hydrogen or an alkyl group having 1-3 carbon atoms; X and X? respectively represent a hydrogen atom, a halogen atom, an alkoxide group, a thiolate group, an amide group, a silyl group or a hydrocarbon group having 1-20 carbon atoms; L represents a neutral Lewis base; w represents an integer of 0-3; and [B]? represents a non-coordinating anion.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: February 18, 2014
    Assignees: Riken, Bridgestone Corporation, JSR Corporation
    Inventors: Shojiro Kaita, Olivier Tardif
  • Patent number: 8653209
    Abstract: This invention relates to a co-oligomer having an Mn of 300 to 30,000 g/mol comprising 10 to 90 mol % propylene and 10 to 90 mol % of ethylene, wherein the oligomer has at least X % allyl chain ends, where: 1) X=(?0.94(mole % ethylene incorporated)+100), when 10 to 60 mole % ethylene is present in the co-oligomer, and 2) X=45, when greater than 60 and less than 70 mole % ethylene is present in the co-oligomer, and 3) X=(1.83*(mole % ethylene incorporated)?83), when 70 to 90 mole % ethylene is present in the co-oligomer. This invention also relates to a homo-oligomer, comprising propylene, wherein the oligomer has: at least 93% allyl chain ends, an Mn of about 500 to about 20,000 g/mol, an isobutyl chain end to allylic vinyl group ratio of 0.8:1 to 1.2:1.0, and less than 100 ppm aluminum. This invention also relates to a process of making homo-oligomer, comprising propylene, wherein the productivity is greater than 4500 g/mmol Hf (or Zr)/hour.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: February 18, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick Brant, Donna J. Crowther, Andrew G. Narvaez, Jr.
  • Patent number: 8637615
    Abstract: Provided is a method for making a polyolefin comprising contacting one or more olefins in a reactor containing a catalyst; polymerizing the one or more olefins to produce an olefin polymer characterized by a first melt flow ratio (MFR) and a first haze; and altering the reaction temperature in the reactor to shift the first MFR to a MFR that is different than the first MFR and to shift the first haze to a haze that is different than the first haze.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: January 28, 2014
    Assignee: Univation Technologies, LLC
    Inventors: Dongming Li, Ching-Tai Lue, Chi-I Kuo, Mark G. Goode, Stefan B. Ohlsson
  • Patent number: 8637616
    Abstract: The present invention provides polymerization processes utilizing an ansa-metallocene catalyst system for the production of olefin polymers. Polymers produced from the polymerization processes have properties that vary based upon the presence or the absence of hydrogen and/or comonomer in the polymerization process.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: January 28, 2014
    Assignee: Chevron Philips Chemical Company LP
    Inventors: Richard M. Buck, Qing Yang, Albert P. Masino, Christopher E. Wittner
  • Patent number: 8633287
    Abstract: A polymerization process for copolymerizing ethylene and a series of ?-olefins to form a branched polyethylene, in which the series of ?-olefins is generated in-situ by an ethylene oligomerization catalyst, is improved if the oligomerization catalyst has a Schulz-Flory constant of about 0.30 to about 0.55. This makes very little higher molecular weight ?-olefins, which allows for easy removal of unpolymerized ?-olefins from the polyolefin product.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: January 21, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Joel David Citron
  • Patent number: 8633286
    Abstract: A catalyst composition that includes a support material having an improved particle-size distribution is provided. Processes for producing polyolefin composition also are provided. Polymers and films also are provided. An example of a catalyst composition is a supported multi-transition-metal catalyst composition that includes: (a) at least two catalyst components selected from the group consisting of: a nonmetallocene catalyst component and a metallocene catalyst component; (b) a support material that has a D50 of less than about 30 microns and a particle size distribution having a D90/D10 ratio of less than about 6; and (c) an activator.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: January 21, 2014
    Assignee: Univation Technologies, LLC
    Inventors: Chi-I Kuo, Tae Hoon Kwalk, Dongming Li, Porter Clarke Shannon
  • Patent number: 8623974
    Abstract: This invention relates to a process for polymerization, comprising (i) contacting, at a temperature greater than 35° C., one or more monomers comprising ethylene and/or propylene, with a catalyst system comprising a metallocene catalyst compound and an activator, (ii) converting at least 50 mol % of the monomer to polyolefin; and (iii) obtaining a branched polyolefin having greater than 50% allyl chain ends, relative to total unsaturated chain ends. The invention also relates to the branched polyolefins and functionalized branched polyolefins.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: January 7, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Peijun Jiang, Patrick Brant