From Ethylene Only Patents (Class 526/352)
  • Patent number: 10099970
    Abstract: Methods of preparing oligomers of an olefin are provided. The methods can include providing a composition that includes an alkylaluminum compound, a chromium compound, and a hydrocarbon solvent. The hydrocarbon solvent can include n-undecane, a C8-C11 alkane compound having one branch, or a mixture thereof. The methods can further include contacting an olefin with the composition to form oligomers of the olefin. The olefin can include ethylene, and the oligomers of the olefin can include 1-hexene.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: October 16, 2018
    Assignee: PUBLIC JOINT STOCK COMPANY “SIBUR HOLDING”
    Inventors: Timur Mikhailovich Zilbershtein, Denis Alekseevich Lenev
  • Patent number: 10066326
    Abstract: The invention provides a high-strength fabric and a manufacturing method thereof. The manufacturing method includes: connecting at least one group of single yarns according to a certain law to manufacture a fabric body, wherein the high-strength fabric includes at least the fabric body, and each single yarn is manufactured by converging or converging and twisting an ultra-high molecular weight polyethylene thin film or strip. The high-strength fabric has the advantages of good structural integrity, simple manufacturing process, high production efficiency, high strength, high strength utilization ratio, light weight, no pollution and good bulletproof performance.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: September 4, 2018
    Assignee: Zhengzhou Zhongyuan Defense Material Co., Ltd.
    Inventors: Changgan Ji, Ruiwen Yin, Junying Ma
  • Patent number: 9926416
    Abstract: Ultra high molecular weight polyethylene (UHMWPE) polymers that have an average molecular weight of at least 500,000 g/mol and an enthalpy of at least 190 J/g is provided. The UHMWPE polymer may include at least one comonomer. The UHMWPE polymer is used to form a membrane, that, when expanded, has a node and fibril structure. The UHMWPE membrane has an endotherm of about 150° C. associated with the fibrils in the membrane. The membrane has a percent porosity of at least 25%, and in exemplary embodiments, the percent porosity is at least 60%. Additionally, the UHMWPE membrane has a thickness less than 1 mm. An UHMWPE membrane may be formed by lubricating the UHMWPE polymer, subjecting the lubricated polymer to pressure at a temperature below the melting point of the UHMWPE polymer to form a tape, and expanding the tape at a temperature below the melting temperature of the UHMWPE polymer.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: March 27, 2018
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Guy A Sbriglia
  • Patent number: 9889224
    Abstract: Provided is a method of making a polymeric material with a spatially controlled distribution of one or more additives including the steps of blending the one or more additives with a polymeric material, consolidating the polymeric material, heating at least a portion of at least one surface of the consolidated additive-blended polymeric material, and cooling the heated consolidated additive-blended polymeric material, thereby forming a polymeric material with a spatially controlled distribution of additive.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: February 13, 2018
    Assignee: The General Hospital Corporation
    Inventors: Ebru Oral, Chhavi Gupta, Orhun Muratoglu
  • Patent number: 9751965
    Abstract: Disclosed herein is a polymerization method of propylene, which can prepare a propylene homopolymer with both high fluidity and high rigidity as well as a propylene/?-define copolymer having both high fluidity and a good rigidity-toughness balance by, for example, control of polymerization steps and elevation of polymerization temperature, while the catalyst still maintains a relatively high polymerization activity.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 5, 2017
    Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
    Inventors: Luqiang Yu, Zhichao Yang, Jiangbo Chen, Jianxin Zhang, Yafeng Du, Qinyu Tong, Kang Sun, Yang Liu, Jie Zou, Lusheng Wang, Zengyue Dai, Zhong Tan
  • Patent number: 9695309
    Abstract: This disclosure relates to rotomolded articles, having a wall structure, where the wall structure contains at least one layer containing an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Yd) greater than ?1.0; total catalytic metal ?3.0 ppm; ?0.03 terminal vinyl unsaturations per 100 carbon atoms. The ethylene interpolymer products have a melt index from about 0.5 to about 15 dg/minute, a density from about 0.930 to about 0.955 g/cm3, a polydispersity (Mw/Mn) from about 2 to about 6 and a CDBI50 from about 50% to about 98%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: July 4, 2017
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Celine Bellehumeur, XiaoChuan Wang, Tieqi Li, Christopher John Brooke Dobbin, Fazle Sibtain, Kenneth Edward Taylor, Hamidreza Khakdaman
  • Patent number: 9676172
    Abstract: The present invention relates to film structure suitable for use in stand up pouches comprising all polyethylene material. The film structure can be a monolayer film or a multilayer film structure having specific requirements for each layer. The combination results in a film structure having adequate stiffness to function as a stand-up pouch while also providing acceptable water vapor transmission rates and good tear resistance. Such films have improved sustainability characteristics as they should permit down-gauging of the films and, can more easily be recycled, at least for the preferred embodiment comprising only polyethylene resins.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: June 13, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Rosana Rosa, Nicolas C. Mazzola, Jorge C. Gomes
  • Patent number: 9637568
    Abstract: The present disclosure generally relates to a process for separating polymeric and gaseous components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers in the presence of free-radical polymerization initiators into a gaseous fraction and a liquid fraction in a separation vessel, wherein the filling level of the liquid fraction in the separation vessel is measured by a radiometric level measurement system comprising at least two radioactive sources and at least three radiation detectors, and the filling level is controlled by a product discharge valve which operates based on data coming from the level measurement system.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: May 2, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Danir Khayrullin, Michael Deuerling, Christoph Wolf, Erich Neumann, Claudio Fibla
  • Patent number: 9605091
    Abstract: Process for enhancing the separation of monomer components from light components other than monomer by providing a first stream containing monomer and light components other than monomer and passing the first stream to a first separator at a first pressure to separate a gaseous second stream containing at least some of the light components other than monomer and provide a liquid third stream containing monomer. A portion of the third stream and a fourth stream containing monomer and light components other than monomer is passed to a second separator at a second pressure which is lower than the first pressure to separate a gaseous fifth stream containing at least some of the light components other than monomer from the fourth stream and provide a liquid sixth stream containing monomer.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: March 28, 2017
    Assignee: INEOS EUROPE AG
    Inventors: Daniel Marissal, Philip Van Breuseghem, Brent R. Walworth
  • Patent number: 9422374
    Abstract: A continuous polymerization apparatus uses at least a first reactor and a second reactor (10, 20). Each of the reactors (10, 20) includes at least one supply port (11a, 21a, and 21b), an effluent port (11b, 21d), and a temperature detecting means (T1, T2), each of which detects the temperature in the reactor. The supply port (11a) of the first reactor (10) is connected to supply sources (1, 3) of a raw material monomer and a polymerization initiator, and the effluent port (11b) is connected to the first supply port (21a) of the second reactor (20) through a connection line (15a). The second supply port (21b) of the second reactor (20) is connected to a replenishing line (15b) that supplies a new raw material monomer to the second reactor.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: August 23, 2016
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Masakazu Sumida, Kazuhiro Yamazaki
  • Patent number: 9394381
    Abstract: Process for maintaining a continuous gas-phase (co-) polymerization of olefins in a large fluidized bed reactor in a homogeneous mode while operating at high space time yield and condensation rate in the presence of a polymerization catalyst.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: July 19, 2016
    Assignee: INEOS SALES (UK) LIMITED
    Inventors: Jean-Louis Chamayou, Daniel Marissal
  • Patent number: 9303107
    Abstract: An ethylene-based polymer, which is a low density polyethylene (LDPE), obtained by free radical polymerization of ethylene, and wherein the LDPE has a GPC parameter “LSP” less than 1.60. An ethylene-based polymer that comprises the following features: a) at least 0.1 amyl groups per 1000 total carbon atoms; b) a melt index of 0.01 to 0.3; c) a z-average molecular weight of Mz (conv.) of greater than 350,000 g/mol and less than 425,000 g/mol; d) a gpcBR value from 1.50 to 2.05, and e) a MWD(conv) [Mw(conv)/Mn(conv)] from 6 to 9. An ethylene-based polymer that comprises the following features: a) at least 0.1 amyl groups per 1000 total carbon atoms; b) a melt viscosity ratio (V0.1/V100), at 190° C., greater than, or equal to, 58; c) a melt viscosity at 0.1 rad/s, 190° C., greater than, or equal to, 40,000 Pa·s, and d) a gpcBR value from 1.50 to 2.25.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: April 5, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Lori L. Kardos, Wallace W. Yau, Jose Ortega, Alfred E. Vigil, Jr.
  • Patent number: 9175108
    Abstract: The present invention relates to a non-cryogenic process for the large scale synthesis of disentangled ultra high molecular weight polyethylene (DUHMWPE) polymers. The process comprises of the following steps: a. mixing FI catalyst of formula I with a hydrocarbon solvent containing poly-methyl aluminoxane (P-MAO) co-catalyst in a vessel under stirring before polymerization or directly in the polymerization vessel at a temperature ranging between 25° C. and 29° C. under a dry Nitrogen atmosphere; and lower concentration of co-catalyst resulting in the associated benefits as described earlier in the claims and descriptions. b. pressurizing ethylene in the polymerization vessel and polymerizing ethylene in a solution or a suspension, continuously or batch wise, in one or more stages at a temperature is in the range of 30° C. to 50° C.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: November 3, 2015
    Assignee: RELIANCE INDUSTRIES LIMITED
    Inventors: Krishna Renganath Sarma, Ajit Behari Mathur, Rakshvir Jasra, Sudhakar Padmanabhan, Shashikant, Viralkumar Patel
  • Patent number: 9103966
    Abstract: Plastic optical fibers or plastic optical fiber cores with good high temperature resistance to optical attenuation loss are prepared from a cyclic block copolymer characterized by a: A. Weight ratio of hydrogenated conjugated diene polymer block to hydrogenated vinyl aromatic polymer block of 35:65 to 10:90; B. Number average molecular weight (Mn) of from 40,000 to 150,000, grams per mole (g/mol); and C. Hydrogenation level such that each hydrogenated vinyl aromatic polymer block and each hydrogenated conjugated diene polymer block has a hydrogenation level of at least 95 percent.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: August 11, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Thomas S. Lin, Anny Flory, Dirk B. Zinkweg, Jeffrey M. Cogen, Mary Anne Leugers, Weijun Zhou
  • Patent number: 9079993
    Abstract: A first embodiment which is a bimodal polymer having a weight fraction of a lower molecular weight (LMW) component ranging from about 0.25 to about 0.45, a weight fraction of a higher molecular weight (HMW) component ranging from about 0.55 to about 0.75 and a density of from about 0.931 g/cc to about 0.955 g/cc which when tested in accordance with ASTM D1003 using a 1 mil test specimen displays a haze characterized by equation: % Haze=2145?2216*FractionLMW?181*a molecular weight distribution of the LMW component (MWDLMW)?932*a molecular weight distribution of the HMW component (MWDHMW)+27*(FractionLMW*MWDLMW)+1019*(FractionLMW*MWDHMW)+73*(MWDLMW*MWDHMW) wherein fraction refers to the weight fraction of the component in the polymer as a whole.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: July 14, 2015
    Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Guylaine St. Jean, Elizabeth M. Lanier, J. Todd Lanier, Qing Yang, Brooke A. Gill
  • Publication number: 20150148504
    Abstract: The invention provides a process to form an ethylene-based polymer, said process comprising polymerizing ethylene in presence of at least the following: A) a free-radical agent; B) an alkylated phenol selected from Formula (I), wherein R1, R2, R3, R4 and R5 are each, independently, hydrogen or an alkyl; and C) a “metal alkyl-containing compound” selected from the group consisting of the following: i) at least one “Group II metal alkyl-containing compound,” ii) at least one “Group III metal alkyl-containing compound,” and iii) a combination of i) and ii).
    Type: Application
    Filed: March 8, 2013
    Publication date: May 28, 2015
    Applicant: Dow Global Technologies LLC
    Inventors: Sean W. Ewart, Teresa P. Karjala, Michael J. Zogg, JR., Sarat Munjal
  • Publication number: 20150148506
    Abstract: A gas-phase polyolefin reactor system for rapidly transitioning from one polyolefin product to another is disclosed. The reactor system comprises a control valve, a high-flow valve, a polyolefin reactor, a flow meter, a totalizer and an empirical model. During a transition, the empirical model predicts a required amount based upon an initial concentration and a selected ending concentration, the flow meter measures a flow rate, the totalizer determines a totalized amount when the flow rate of the first stream reaches the required amount based upon the measured flow rate and outputs the totalized amount to the empirical model, and the empirical model compares the required amount to the totalized amount and determines a transition endpoint. A method of rapidly transitioning the reactor system from one polyolefin product to another is also disclosed.
    Type: Application
    Filed: February 4, 2015
    Publication date: May 28, 2015
    Applicant: Ineos USA, LLC
    Inventors: Gregory Dudish, Ernest Chan
  • Publication number: 20150141598
    Abstract: Disclosed herein are catalyst compositions containing boron bridged, cyclopentadienyl-indenyl metallocene compounds with an alkenyl substituent. These catalyst compositions can be used for the polymerization of olefins. For example, ethylene homopolymers produced using these catalyst compositions can be characterized by a density less than 0.97 g/cm3 and a melt index greater than 50 g/10 min.
    Type: Application
    Filed: April 17, 2014
    Publication date: May 21, 2015
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Jeffrey F. Greco, Qing Yang, Tony R. Crain
  • Publication number: 20150133615
    Abstract: Spray-dried catalyst compositions comprising a transition metal complex and polymerization processes employing the same are disclosed herein. An embodiment provides a spray-dried catalyst composition comprising a transition metal catalyst component represented by the following formula: (I) and polymerization process employing the same.
    Type: Application
    Filed: March 28, 2012
    Publication date: May 14, 2015
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Wesley R. Mariott, Phuong A. Cao, Daniel P. Zilker, JR., John H. Oskam, Cliff R. Mure
  • Patent number: 9029478
    Abstract: A film comprising a polymer blend of: (a) 0.15 to 0.8 wt % of an LDPE having an MI of 0.1 to 0.6 dg/min; and (b) 99.2 to 99.85 wt % of an LLDPE produced with a single-site catalyst comprising a metallocene and having a haze (HZlldpe), dart impact (DIlldpe), MD-Tear (MDTlldpe), and a slice long chain branching index of at least 0.90 for any portion of the composition having a molecular weight of 100,000 or above, wherein the film has a haze (HZblend), a dart impact (DIblend), and an MD-Tear (MDTblend), and HZblend=a*HZlldpe, where a is 0.20 to 0.70; DIblend=b*DIlldpe, where b is 0.9 to 1.3; and MDTblend=c*MDTlldpe, where c is 0.8 to 1.1.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: May 12, 2015
    Assignee: Equistar Chemicals, LP
    Inventor: Harilaos Mavridis
  • Patent number: 9023967
    Abstract: 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.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: May 5, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Youlu Yu, Eric D. Schwerdtfeger, Max P. McDaniel, Alan L. Solenberger, Kathy S. Collins
  • Publication number: 20150119538
    Abstract: The invention relates to a process for the production of polyethylene by gas phase polymerisation of ethylene in the presence of a supported chromium oxide based catalyst which is modified with an amino alcohol wherein the molar ratio of amino alcohol:chromium ranges between 0.5:1 and 1:1, wherein the support is silica having a surface area (SA) between 250 m2/g and 400 m2/g and a pore volume (PV) between 1.1 cm3/g and less than 2.0 cm3/g and wherein the amount of chromium in the supported catalyst is at least 0.1% by weight and less than 0.5% by weight.
    Type: Application
    Filed: June 11, 2013
    Publication date: April 30, 2015
    Applicant: Saudi Basic Industries Corporation
    Inventors: Vugar O. Aliyev, Jose Fernando Cevallos-Candau
  • Publication number: 20150119544
    Abstract: The invention relates to processes for converting a mixture of hydrocarbon and sulfur-containing molecules such as mercaptan into products comprising acetylene, ethylene, and hydrogen sulfide, to processes utilizing the acetylene and ethylene resulting from the conversion, and to equipment useful for such processes.
    Type: Application
    Filed: May 31, 2012
    Publication date: April 30, 2015
    Inventors: Paul F. Keusenkothen, Frank Hershkowitz, Robert D. Denton, Gary D. Mohr
  • Publication number: 20150119545
    Abstract: Provided is a method of fabricating a thermal conductive polymer, including: a) fabricating a gel filament by primarily elongating a solution filament formed by spinning a mixed solution containing an ultra high molecular weight polyolefin (UHMWPO) resin and a first solvent, followed by cooling; b) secondarily elongating the gel filament; c) fabricating a dry filament by removing the solvent from the gel filament, followed by tertiary elongation; and d) converting the dry filament into the gel filament by adding the first solvent to the dry filament; e) removing the first solvent from the converted gel filament; and f) quaternarily elongating the gel filament from which the first solvent is removed.
    Type: Application
    Filed: October 29, 2014
    Publication date: April 30, 2015
    Inventors: Yongrak MOON, Kangmin JUNG
  • Patent number: 9018329
    Abstract: A unimodal polymer having a melt index of from about 0.5 g/10 min to about 4 g/10 min, a density of equal to or greater than about 0.945 g/cc which when formed into a film displays a moisture vapor transmission rate of less than about 0.55 g-mil/100 in2 in 24 hours as determined in accordance with ASTM F 1249. A unimodal polymer having a melt index of from about 0.5 g/10 min to about 4 g/10 min, a density of equal to or greater than about 0.945 g/cc which when formed into a film displays a moisture vapor transmission rate of less than about 0.44 g-mil/100 in2 in 24 hours as determined in accordance with ASTM F 1249.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: April 28, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Mark L. Hlavinka, Guylaine St. Jean, Brooke A. Gill
  • Patent number: 9018328
    Abstract: The invention provides a solution polymerization process comprising: A) polymerizing one or more monomers in the presence of a solvent that comprises a heavy hydrocarbon solvent and a light hydrocarbon solvent, to form a polymer solution; B) transferring the polymer solution to a Liquid-Liquid Separator, without adding heat to the solution, and wherein the pressure of the polymer solution is actively reduced in a controlled manner prior to, or within, the Liquid-Liquid Separator, to induce at least two liquid phases, a polymer-rich phase and a solvent-rich phase, and wherein the concentration of polymer in the polymer-rich phase is higher than that in the polymer solution transferred to the Liquid-Liquid Separator; and C) removing the solvent-rich phase.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: April 28, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Prasanna K. Jog, Robert D. Swindoll, Nile A. Mead, Pradeep Jain, Alec Y. Wang, Job D. Guzman
  • Publication number: 20150112038
    Abstract: A method for controlling the temperature in a polymerization reactor equipped with a cycle gas line for withdrawing reactor gas from the reactor, leading the reactor gas through a heat-exchanger, which is cooled by a cooling medium, which is conveyed in a cooling system through the heat-exchanger, and feeding the reactor gas back to the reactor by adjusting the temperature of the cooling medium entering the heat exchanger, wherein the temperature of the cooling medium entering the heat exchanger is controlled by adjusting the flow rate of the cooling medium in a part of the cooling system by a flow control system comprising two continuously operating flow control devices of different size, which are connected in parallel, a process for polymerizing olefins and a process for controlling the flow rate of a fluid medium.
    Type: Application
    Filed: June 13, 2013
    Publication date: April 23, 2015
    Inventors: Holger Strecker, Manfred Hecker, Rainer Karer, Axel Hamann, Maria De Lange
  • Patent number: 9000116
    Abstract: A blow molding ethylene resin composition satisfies the following requirements [a], [b], [c] and [d] at the same time: [a] the melt flow rate (MFR) at a temperature of 190° C. under a load of 21.6 kg is in the range of 1.0 to 15 g/10 min; [b] the density is in the range of 955 to 970 kg/m3; [c] the number of methyl branches per 1000 carbon atoms is less than 0.1 according to 13C-NMR; [d] the tensile impact strength measured at ?40° C. in accordance with JIS K 7160 is not less than 270 kJ/m2.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: April 7, 2015
    Assignees: Prime Polymer Co., Ltd., Mitsui Chemicals, Inc.
    Inventors: Yoshiyuki Hirase, Kenji Iwamasa
  • Publication number: 20150093550
    Abstract: Solution casting a nanostructure. Preparing a template by ablating nanoholes in a substrate using single-femtosecond laser machining. Replicating the nanoholes by applying a solution of a polymer and a solvent into the template. After the solvent has substantially dissipated, removing the replica from the substrate.
    Type: Application
    Filed: December 4, 2014
    Publication date: April 2, 2015
    Inventors: William Hudson Hofmeister, Alexander Yuryevich Terekhov, Jose Lino Vasconcelos de Costa, Kathleen Stacia Lansford, Deepak Rajput, Lloyd M. Davis
  • Patent number: 8993704
    Abstract: In a process for producing an elongated polyethylene component, such as a fiber or membrane, polyethylene powder having a molecular weight of at least 3×105 g/mol as determined by ASTM 4020 is dissolved in a solvent to produce an extrudable solution. The solution is then extruded through a die to form an elongated component and at least part of said solvent is removed from the elongated component. The polyethylene powder used in the process is produced by polymerizing ethylene in the presence of a catalyst composition comprising a Group 4 metal complex of a phenolate ether ligand.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: March 31, 2015
    Assignee: Ticona GmbH
    Inventors: Dominique Robert, Julia Hufen, Kerstin Lüdtke, Jens Ehlers
  • Publication number: 20150087031
    Abstract: The present invention relates to methods of processing lignocellulosic material to obtain hemicellulose sugars, cellulose sugars, lignin, cellulose and other high-value products. Also provided are hemicellulose sugars, cellulose sugars, lignin, cellulose, and other high-value products.
    Type: Application
    Filed: May 3, 2013
    Publication date: March 26, 2015
    Inventors: Robert Jansen, Claire Gregoire, philip Travisano, Lee Madsen, Neta Matis, Yael Har-Tal, Shay Eliahu, James Alan Lawson, Noa Lapidot, Luke Burke, Aharon M. Eyal, Timothy Allen Bauer, Hagit Sade, Paul Mcwilliams, Ziv-Vladimir Belman, Bassem Hallac, Michael Zviely, Yelena Gershinksy, Adam Carden
  • Publication number: 20150086736
    Abstract: A polyethylene article comprises crystalline polyethylene in an orthorhombic unit cell. The b-axes of the crystalline polyethylene are substantially aligned with the machine direction of the article. In particular, the Herman's index of the b-axes in the machine direction is greater than zero and greater than the Herman's indices of the b-axes in both the transverse and normal directions. The unique physical attributes exhibited by a polyethylene article having this new morphology are also described.
    Type: Application
    Filed: September 22, 2014
    Publication date: March 26, 2015
    Inventors: Darin L. Dotson, Chi-Chun Tsai, Haihu Qin, John W. Miley, Mary Angela Cooley, Sanjeev K. Dey, Eduardo Torres, Francisco Alvarez
  • Patent number: 8980781
    Abstract: The present invention relates to novel metallocene catalysts of formula I, which is defined herein. The present invention also provides processes for making these catalysts and their use in olefin polymerisation reactions.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: March 17, 2015
    Assignee: Isis Innovation Limited
    Inventors: Dermot O'Hare, Paul Ransom, Andrew Ashley
  • Patent number: 8975355
    Abstract: A novel UHMW polyethylene material, which is displaying excellent abrasion resistance amongst other properties, is devised.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: March 10, 2015
    Assignee: Basell Polyolefine GmbH
    Inventors: Lenka Lukesova, Lars Kölling, Shahram Mihan
  • Publication number: 20150065595
    Abstract: The present disclosure relates to a polyethylene resin composition contains an ethylene homopolymer.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 5, 2015
    Applicant: Asahi Kasei Chemicals Corporation
    Inventors: Hideki NASU, Akio FUJIWARA, Ryoji TANAKA
  • Patent number: 8957158
    Abstract: A novel PE material is devised showing excellent mechanical/optical properties and process ability, e.g. for film extrusion. The polyethylene of the invention is produced in one single e.g. gas phase reactor.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: February 17, 2015
    Assignee: Basell Polyolefine GmbH
    Inventors: Fabiana Fantinel, Gerd Mannebach, Shahram Mihan, Gerhardus Meier, Iakovos Vittorias
  • Publication number: 20150025204
    Abstract: Provided are a hybrid supported metallocene catalyst, a method for preparing the same, and a process for preparing an olefin polymer using the same, and more particular, a hybrid supported metallocene catalyst characterized in that two kinds of metallocene compounds containing a new cyclopenta[b]fluorenyl transition metal compound are supported on an inorganic or organic porous carrier surface-treated with an ionic compound and a co-catalyst, a method for preparing the same, and a process for preparing an olefin polymer using the hybrid supported metallocene catalyst.
    Type: Application
    Filed: March 5, 2013
    Publication date: January 22, 2015
    Applicant: SK Innovation Co., Ltd.
    Inventors: Ho Seong Lee, Dong Cheol Shin, Sung Seok Chae, Kyu Cheol Cho, Seung Yeol Han, Jong Sok Hahn
  • Patent number: 8937139
    Abstract: An ethylene polymer having (i) a density defined by equation (1) ?>a?b Log M??(1) where ? is a density of the polymer in g/cc, log M is a log weight average molecular weight of the polymer, a is about 1.0407, and b is about 0.0145; and (ii) a polydispersity index of greater than about 5.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: January 20, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Mark L. Hlavinka, Guylaine St. Jean, Qing Yang
  • Patent number: 8933175
    Abstract: A composition comprising a polyethylene wherein the composition is enriched in polymer molecules having topological variations by an enrichment factor ? and wherein the composition displays a long chain branching frequency of greater than about 0.5 long chain branches per 1000 total carbon atoms. A composition comprising an isolated Ziegler-catalyzed polyethylene having a long chain branching frequency of greater than about 0.5 long chain branches per 1000 total carbon atoms at the high molecular weight end.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: January 13, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Youlu Yu, Chung C. Tso, David C. Rohlfing, Paul J. Deslauriers, Melvin Hildebrand, Max P. McDaniel, Qing Yang
  • Publication number: 20150011702
    Abstract: The invention relates to linear low density polyethylene having a density in the range from about 900 kg/m3 to less than about 940 kg/m3 as determined using IS01872-2, having a molecular weight distribution (Mw/Mn) in the range from 2.5 to 3.5, having an area under the peak in the temperature range from 20 to 40° C. determined using an analytical temperature rising elution fractionation analysis using 1,2-dichlorobenzene and a heating rate of 1° C./min, wherein the area is in the range from 5 to 20% of the sum of the areas under all peaks determined with the analytical temperature rising elution fractionation analysis.
    Type: Application
    Filed: December 20, 2012
    Publication date: January 8, 2015
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Bart Albertus Hubertus van den Esschert, Maria Johanna Willems, Abdulaziz Hamad Al-Humydi, Yahya Banat, Said Fellahi
  • Publication number: 20150011719
    Abstract: Methods for making olefin polymerization catalysts and methods for making polymers using the catalysts are provided. The method for making the catalyst can include combining one or more supports with one or more magnesium-containing compounds under reaction conditions to form a first reacted product. One or more chlorinating compounds selected from the group consisting of aluminum alkyl chlorides and chloro substituted silanes can be combined with the first reacted product under reaction conditions to form a second reacted product. One or more titanium-containing compounds selected from the group consisting of titanium alkoxides and titanium halides can be combined with the second reacted product under reaction conditions to form a catalyst.
    Type: Application
    Filed: February 18, 2013
    Publication date: January 8, 2015
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Wesley R. Mariott, Kevin J. Cann, John H. Moorhouse, Mark G. Goode, Thomas Oswald
  • Publication number: 20150005462
    Abstract: A gas-phase polyolefin reactor system for rapidly transitioning from one polyolefin product to another is disclosed. The reactor system comprises a steady-state control valve, a high-flow valve, a polyolefin reactor, a flow meter, a totalizer, an online analyzer and an empirical model. During a transition, the on-line analyzer measures an initial concentration of a reaction component, the empirical model predicts a required amount based upon the measured initial concentration and a selected ending concentration, the flow meter measures a flow rate, the totalizer determines a totalized amount when the flow rate of the first stream reaches the required amount based upon the measured flow rate and outputs the totalized amount to the empirical model, and the empirical model compares the required amount to the totalized amount and determines a transition endpoint. A method of rapidly transitioning the reactor system from one polyolefin product to another is also disclosed.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Applicant: Ineos USA, LLC
    Inventors: Gregory Dudish, Ernest Chan
  • Publication number: 20140378640
    Abstract: A method for the delivery of a catalyst to a polymerization reactor is disclosed, comprising: contacting a catalyst with a carrier fluid comprising an inert hydrocarbon in gaseous form, the inert hydrocarbon having a normal boiling point of about ?1° C. to about 81° C.; and flowing the carrier fluid to the polymerization reactor such that the carrier fluid transports the catalyst to the polymerization reactor. A catalyst delivery system is disclosed, comprising: a catalyst vessel for containing a catalyst; a catalyst injection line for delivering the catalyst to a polymerization reactor, the catalyst injection line being in fluid communication with the catalyst vessel and the polymerization reactor; and a carrier fluid line in fluid communication with the catalyst injection line for delivering a carrier fluid comprising an inert hydrocarbon to the catalyst injection line, the inert hydrocarbon having a normal boiling point of about ?1° C. to about 81° C.
    Type: Application
    Filed: October 25, 2012
    Publication date: December 25, 2014
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Dale A. Wright, John R. Parrish, James L. Swecker, II, Mark G. Goode
  • Patent number: 8916649
    Abstract: The present invention relates to a process of producing an ethylene polymer composition in multiple stages, of which the first stage is preferably a slurry polymerization stage, in the presence of a catalyst system, comprising: a) a solid catalyst precursor, comprising a transition metal selected from titanium and vanadium; magnesium; a halide, optionally an electron donor; and a solid particulate material comprising an inorganic oxide, and wherein the median particle diameter, D50, of the solid catalyst precursor, based upon the total volume of solid catalyst precursor, is from 1 to 13 micrometers; and b) an organoaluminium compound.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: December 23, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Patrick J. C. Schouterden, Ruddy A. J. Nicasy, Sarat Munjal, Robert J. Jorgesen, Burkhard E. Wagner
  • Patent number: 8916664
    Abstract: An ethylene oligomerization catalyst that oligmerizes ethylene to a series of ?-olefins and that has a Schulz-Flory constant of about 0.75 to 0.995 produces a stream of ?-olefins. This stream is then added to a vessel containing ethylene and a copolymerization catalyst that copolymerizes ethylene and ?-olefins. The resulting branched polyethylene often has good processing properties. The good processing is presumably due to the presence of “long chain branching”. Such polymers are useful for films and other packaging materials, and for molding resins for molding parts such as industrial, automotive or electrical parts.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: December 23, 2014
    Assignee: E I Du Pont de Nemours and Company
    Inventors: Joel David Citron, Alex Sergey Ionkin
  • Patent number: 8916667
    Abstract: An ethylene-based polymer, which is a low density polyethylene (LDPE), obtained by free radical polymerization of ethylene, and wherein the LDPE has a GPC parameter “LSP” less than 1.60. An ethylene-based polymer that comprises the following features: a) at least 0.1 amyl groups per 1000 total carbon atoms; b) a melt index of 0.01 to 0.3; c) a z-average molecular weight of Mz (conv.) of greater than 350,000 g/mol and less than 425,000 g/mol; d) a gpcBR value from 1.50 to 2.05, and e) a MWD(conv) [Mw(conv)/Mn(conv)] from 6 to 9. An ethylene-based polymer that comprises the following features: a) at least 0.1 amyl groups per 1000 total carbon atoms; b) a melt viscosity ratio (V0.1/V100), at 190° C., greater than, or equal to, 58; c) a melt viscosity at 0.1 rad/s, 190° C., greater than, or equal to, 40,000 Pa·s, and d) a gpcBR value from 1.50 to 2.25.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: December 23, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Lori L. Kardos, Wallace W. Yau, Jose Ortega, Alfred E. Vigil, Jr.
  • Publication number: 20140370551
    Abstract: This disclosure provides a business method and system for generating sugars and recycling a non-biomass component from a waste stream. In some embodiments, a waste stream comprising cellulose and a non-biomass component is saccharified to produce glucose, followed by recovery of the glucose and non-biomass component, which may be recycled to another site associated with production of a cellulose-containing product that contains the non-biomass component. In certain scenarios, the waste stream is generated at a first location, cellulose pretreatment (if desired) and hydrolysis are conducted at a second location, and the non-biomass component is recycled to the first location or a third location. The non-biomass component may include metals, metal oxides, salts, organic compounds, inorganic compounds, oligomers, or polymers, for example.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 18, 2014
    Inventors: Theodora RETSINA, Kimberly NELSON
  • Publication number: 20140364577
    Abstract: Solid-state shear pulverization of semi-crystalline polymers and copolymers thereof and related methods for enhanced crystallization kinetics and physical/mechanical properties.
    Type: Application
    Filed: May 16, 2014
    Publication date: December 11, 2014
    Inventors: John M. Torkelson, Cynthia Pierre, Amanda Flores
  • Publication number: 20140342141
    Abstract: Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin.
    Type: Application
    Filed: May 14, 2013
    Publication date: November 20, 2014
    Inventors: Lili Cui, Ashish M. Sukhadia, Vivek Rohatgi
  • Patent number: 8889805
    Abstract: The present invention provides a metal complex of group 10 elements of the periodic table having a carboxylate structure represented by formula (C2); a catalyst for polymerization of olefin mainly comprising the metal complex; and a method for producing polymers by homopolymerizing olefin represented by formula (1), polymerizing two or more kinds of the above olefin, or copolymerizing olefin represented by formula (1) with polar group-containing olefin represented by formula (2) (the meaning of the symbols are as set forth in the description) using the catalyst. A metal complex of group 10 elements of the periodic table, in which all of the coordinating atoms to the metal are a hetero atom is stable and useful as a catalyst component for olefin polymerization, and can be used for a long time in homopolymerization of olefin or copolymerization of two or more kinds of olefin.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: November 18, 2014
    Assignees: Showa Denko K.K., The University of Tokyo
    Inventors: Shingo Ito, Kyoko Nozaki, Yoshikuni Okumura, Junichi Kuroda