From Ethylene Only Patents (Class 526/352)
-
Patent number: 8933175Abstract: 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: GrantFiled: August 30, 2012Date of Patent: January 13, 2015Assignee: Chevron Phillips Chemical Company LPInventors: Youlu Yu, Chung C. Tso, David C. Rohlfing, Paul J. Deslauriers, Melvin Hildebrand, Max P. McDaniel, Qing Yang
-
Publication number: 20150011719Abstract: 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: ApplicationFiled: February 18, 2013Publication date: January 8, 2015Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Wesley R. Mariott, Kevin J. Cann, John H. Moorhouse, Mark G. Goode, Thomas Oswald
-
Publication number: 20150011702Abstract: 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: ApplicationFiled: December 20, 2012Publication date: January 8, 2015Applicant: SAUDI BASIC INDUSTRIES CORPORATIONInventors: Bart Albertus Hubertus van den Esschert, Maria Johanna Willems, Abdulaziz Hamad Al-Humydi, Yahya Banat, Said Fellahi
-
Publication number: 20150005462Abstract: 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: ApplicationFiled: June 28, 2013Publication date: January 1, 2015Applicant: Ineos USA, LLCInventors: Gregory Dudish, Ernest Chan
-
Publication number: 20140378640Abstract: 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: ApplicationFiled: October 25, 2012Publication date: December 25, 2014Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Dale A. Wright, John R. Parrish, James L. Swecker, II, Mark G. Goode
-
Patent number: 8916649Abstract: 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: GrantFiled: May 3, 2012Date of Patent: December 23, 2014Assignee: Dow Global Technologies LLCInventors: Patrick J. C. Schouterden, Ruddy A. J. Nicasy, Sarat Munjal, Robert J. Jorgesen, Burkhard E. Wagner
-
Patent number: 8916667Abstract: 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: GrantFiled: March 13, 2013Date of Patent: December 23, 2014Assignee: Dow Global Technologies LLCInventors: Teresa P. Karjala, Lori L. Kardos, Wallace W. Yau, Jose Ortega, Alfred E. Vigil, Jr.
-
Patent number: 8916664Abstract: 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: GrantFiled: March 28, 2011Date of Patent: December 23, 2014Assignee: E I Du Pont de Nemours and CompanyInventors: Joel David Citron, Alex Sergey Ionkin
-
Publication number: 20140370551Abstract: 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: ApplicationFiled: June 16, 2014Publication date: December 18, 2014Inventors: Theodora RETSINA, Kimberly NELSON
-
Publication number: 20140364577Abstract: Solid-state shear pulverization of semi-crystalline polymers and copolymers thereof and related methods for enhanced crystallization kinetics and physical/mechanical properties.Type: ApplicationFiled: May 16, 2014Publication date: December 11, 2014Inventors: John M. Torkelson, Cynthia Pierre, Amanda Flores
-
Publication number: 20140342141Abstract: 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: ApplicationFiled: May 14, 2013Publication date: November 20, 2014Inventors: Lili Cui, Ashish M. Sukhadia, Vivek Rohatgi
-
Patent number: 8889805Abstract: 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: GrantFiled: July 22, 2011Date of Patent: November 18, 2014Assignees: Showa Denko K.K., The University of TokyoInventors: Shingo Ito, Kyoko Nozaki, Yoshikuni Okumura, Junichi Kuroda
-
Publication number: 20140335321Abstract: A polymeric sheet comprising: a first surface and a second surface; and a first embossed pattern on at least one of the first surface or the second surface and method of preparing same is provided. In one aspect, the sheet comprises at least two protrusions, the at least two protrusions direct, impede, and/or control gas movement between the at least two protrusions when arranged in contact with a surface and externally compressed. In another aspect, the sheet is at least partially cross-linked and/or foamed.Type: ApplicationFiled: November 29, 2012Publication date: November 13, 2014Inventors: Benjamin Joshua Reisman, Baruch Zur, Gregory A. Brooker
-
Patent number: 8877881Abstract: This invention relates to Group 4 catalyst compounds containing anionic bidentate nitrogen/oxygen based ligands catalyst compounds useful for polymerization and or oligomerization of unsaturated monomers. The catalyst compounds are particularly useful, with or without activators, to polymerize olefins, particularly ?-olefins, or other unsaturated monomers.Type: GrantFiled: November 22, 2011Date of Patent: November 4, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventor: Garth R. Giesbrecht
-
Publication number: 20140323675Abstract: The present invention relates to the field of ethylene polymerisation with a supported late transition metal catalyst system.Type: ApplicationFiled: July 7, 2014Publication date: October 30, 2014Inventors: Sabine Sirol, Olivier Lhost
-
Patent number: 8871887Abstract: The invention provides a composition comprising a low density polyethylene (LDPE) obtained by free radical polymerization of ethylene, and wherein the LDPE has a GPC-Viscometer parameter “DPP” less than 1.3. The invention also provides a composition comprising 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 from 0.5 to 0.9 c) a MWD(conv) [(Mw(conv)/Mn(conv))] from 9 to 13. The invention also provides a composition comprising an ethylene-based polymer that comprises the following features: a) at least 0.1 amyl groups per 1000 total carbon atoms; b) a MWD(conv) from 9 to 13; c) a gpcBR value from 2.0 to 5.0; and d) a melt strength (MS) greater than 20 cN.Type: GrantFiled: March 7, 2013Date of Patent: October 28, 2014Assignee: Dow Global Technologies LLCInventors: Teresa P. Karjala, Lori L. Kardos, Wallace W. Yau, Jose Ortega
-
Patent number: 8871878Abstract: The present invention generally relates to a new method of polymerizing ethylene. In one embodiment, the present invention relates to compounds utilized in the polymerization of ethylene and to a synthesis/polymerization method that uses same. In another embodiment, branched polyethylene is synthesized from an ethylene monomer using, in this embodiment, at least one nickel iminophosphonamide (PN2) complex. In still another embodiment, the reaction of (phenyl)(triphenylphosphine)(diphenyl-bis(trimethylsilylimino)phosphorato)-nickel, with Rh(acac) (C2H4)2 and ethylene yield a branched polyethylene. In an alternative of this embodiment, the reaction of (phenyl)(triphenylphosphine)(methyl-cis(trimethylsilyl)amino-bis(trimethylsilylimino)phosphorato)-nickel and ethylene, with or without Ni(COD)2, yields a branched polyethylene.Type: GrantFiled: November 2, 2012Date of Patent: October 28, 2014Assignee: The University of AkronInventors: Scott Collins, Russell A Stapleton
-
Patent number: 8859704Abstract: Disclosed is an ethylene-based polymer with a density from about 0.90 to about 0.94 in grams per cubic centimeter, with a molecular weight distribution (Mw/Mn) from about 2 to about 30, a melt index (I2) from about 0.1 to about 50 grams per 10 minutes, and further comprising sulfur from about 5 to about 4000 parts per million. The amount of sulfur is also determined based upon the total weight of the ethylene-based polymer. Also disclosed is process for making an ethylene-based polymer which includes the steps of splitting a process fluid for delivery into a tubular reactor; feeding an upstream process feed stream into a first reaction zone and at least one downstream process feed stream into at least one other reaction zone, where the process fluid has an average velocity of at least 10 meters per second; and initiating a free-radical polymerization reaction.Type: GrantFiled: April 8, 2013Date of Patent: October 14, 2014Assignee: Dow Global Technologies LLCInventors: Teresa P. Karjala, Christopher R. Eddy, Mehmet Demirors, Wallace W. Yau, Sarat Munjal, Stefan Hinrichs, Jian Wang, Otto J. Berbee, Werner Zschoch, Cornelis J. Hosman, Lonnie G. Hazlitt
-
Patent number: 8859671Abstract: Film structures made from a polymeric blend comprising an ethylene/carbon monoxide (ECO) copolymer and an olefinic, particularly an ethylenic, polymer, e.g., LDPE, exhibit not only photodegradation, but also desirable tensile and dart properties. In one embodiment the film structure is a monolayer in which ECO copolymer comprises at least 40 weight percent with the remainder of the structure comprising at least one of LDPE, LLDPE and HDPE.Type: GrantFiled: December 7, 2010Date of Patent: October 14, 2014Assignee: Dow Global Technologies LLCInventors: Colleen M Tice, Teresa P. Karjala, Lori L. Kardos
-
Patent number: 8859703Abstract: Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from 0.930 g/cc to 0.960 g/cc, and a molecular weight distribution of from 10 to 25, wherein an article formed therefrom has a PENT of at least 1500. Also disclosed is a method of preparing a tubular article including obtaining a bimodal polyethylene having a density of from 0.930 g/cc to 0.960 g/cc and a molecular weight distribution of from 10 to 25, and processing the polyethylene under conditions where a specific energy input (SEI) is less than 300 kW·h/ton, and wherein the article has a PENT of at least 1500. Further disclosed is a method for controlling the degradation of polyethylene including polymerizing ethylene monomer, recovering polyethylene, extruding the polyethylene, and controlling the degradation of polyethylene by measuring the SEI to the extruder and adjusting throughput and/or gear suction pressure keep SEI less than 300 kW·h/ton, and forming an article.Type: GrantFiled: December 28, 2011Date of Patent: October 14, 2014Assignee: Fina Technology, Inc.Inventors: Tim Coffy, Steven Gray, David Knoeppel, Cyril Chevillard, David Rauscher, Carlos Corleto, Gerhard Guenther, Brian B. Cole, Stan Biesert, Vincent Barre, Ruby L. Curtis, Son Nguyen, Danielle Childress
-
Publication number: 20140303340Abstract: A polyethylene can be prepared with a metallocene catalyst system. The polyethylene can have a density of at least 0.945 g/cm3 measured according to ISO 1183, and a Si content of 5 to 40 ppm by weight.Type: ApplicationFiled: September 6, 2012Publication date: October 9, 2014Applicant: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Aurélien Vantomme, Christopher Willocq
-
Publication number: 20140303339Abstract: An apparatus and method are provided for processing hydrocarbon feeds. The method enhances the conversion of hydrocarbon feeds into conversion products, such as ethylene and propylene. In particular, the present techniques utilize a high-severity reactor integrated with another reactor type to convert hydrocarbons to other petrochemical products.Type: ApplicationFiled: December 20, 2011Publication date: October 9, 2014Applicant: ExxonMobil Chemical Patents Inc.Inventors: Paul F. Keusenkothen, Frank Hershkowitz, Jason D. Davis
-
Patent number: 8853340Abstract: Methods of stretching thermoplastic films in the machine direction include elongating the films in the machine direction without significantly reducing the films' machine-direction tear resistance. In one or more implementations, methods of stretching thermoplastic films include reducing the gauge of the films while substantially maintaining the films' machine-direction tear resistance. The methods can involve uniformly cold stretching the films by stretching the films to a draw of about one hundred and eighty percent, or less, of the films' original length.Type: GrantFiled: August 26, 2011Date of Patent: October 7, 2014Assignee: The Glad Products CompanyInventors: Michael G. Borchardt, Robert Thomas Dorsey, Shaun T. Broering
-
Patent number: 8852748Abstract: A polymeric resin having a density of greater than about 0.960 g/cc, a melt index of from about 1.3 g/10 min. to about 2.8 g/10 min., a zero shear viscosity of from about 1×104 Pa*s to about 1×105 Pa*s, a recoverable shear parameter of from about 220 to about 370, and a CY-a parameter of from about 0.155 to about 0.200. A polymeric resin having an initial tension defined by the equation IT??1.67*(MI)+b where b is 5.17 and a percent decrease in the extrusion pressure of the resin of about 30% when compared to polymer resin of similar melt index prepared with a catalyst that has not undergone an activation comprising an oxidation, reduction, oxidation sequence wherein the resin when formed into a film has a moisture vapor transmission rate of from about 0.21 g.mil/100 in2/day to about 0.33 g.mil/100 in2/day.Type: GrantFiled: February 27, 2009Date of Patent: October 7, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Ashish M. Sukhadia, Max P. McDaniel, Ted Cymbaluk, Rajendra K. Krishnaswamy, Lawrence Szmutko
-
Publication number: 20140295184Abstract: A rope including polyethylene elongate elements oriented in the length direction of the rope, where for at least part of the elongate elements the distance of the element to a central longitudinal rope axis varies over the length of the rope. The polyethylene elongate elements including tapes of ultra-high molecular weight polyethylene, the tapes having a width to thickness ratio of at least 10 and a polymer solvent content below 0.05 wt. %. The distance of at least part of the elements to the central longitudinal rope axis varies over the length of the rope between a longitudinal line which is at most 30% from the outside of the rope and a longitudinal line which is at most 30% from the central longitudinal axis of the rope. Such a rope shows a high strength-strength ratio (the ratio between the strength under use conditions and the fresh strength of the rope).Type: ApplicationFiled: November 2, 2012Publication date: October 2, 2014Inventors: Otto Grabandt, Frits Elkink, Bertil Van Berkel
-
Publication number: 20140296454Abstract: The invention relates to a catalyst system for the production of ultrahigh molecular weight polyethylene comprising I. a solid reaction product obtained by reaction of: (a) a hydrocarbon solution comprising (1) an organic oxygen containing magnesium compound or a halogen containing magnesium compound and (2) an organic oxygen containing titanium compound and (b) a mixture comprising a metal compound having the formula MeRnX3-n wherein X is a halogenide, Me is a metal of Group III of Mendeleev's Periodic System of Chemical Elements, R is a hydrocarbon radical containing 1-10 carbon atoms and 0?n?3 and a silicon compound of formula RmSiCl4.m wherein 0?m?2 and R is a hydrocarbon radical containing 1-10 carbon atoms wherein the molar ratio of metal from (b): titanium from (a) is lower than 1:1 II. an organo aluminium compound having the formula AIR3 in which R is a hydrocarbon radical containing 1-10 carbon atoms and III.Type: ApplicationFiled: December 10, 2012Publication date: October 2, 2014Applicant: Saudi Basic Industries CorporationInventors: Aurora Alexandra Batinas-Geurts, Nicolaas Hendrika Friederichs, Tom Schoffelen, Erik Zuidema
-
Publication number: 20140296466Abstract: The present invention relates to a method of producing bio-based homoserine lactone and bio-based organic acid through hydrolysis of O-acyl homoserine produced by a microorganism in the presence of an acid catalyst. According to the present invention, O-acyl homoserine produced by a microorganism is used as a raw material for producing 1,4-butanediol, gamma-butyrolactone, tetrahydrofuran and the like, which are industrially highly useful. The O-acyl homoserine produced by a microorganism can substitute conventional petrochemical products, can solve environmental concerns, including the emission of pollutants and the exhaustion of natural resources, and can be continuously renewable so as not to exhaust natural resources.Type: ApplicationFiled: March 19, 2014Publication date: October 2, 2014Inventors: Han Won Lee, Young Lyeol Yang, So Young Kim, Yong Uk Shin, Jin Sook Chang, Hye Won Um, Young Hyoung Goh, Sung Hoo Jhon
-
Patent number: 8846830Abstract: The present invention relates to production of polymer, and in particular provides an interlock for use in a process for production of a polymer in a reactor, which process comprises: a. polymerising a monomer and optionally a comonomer in the reactor to produce polymer, optionally in the presence of an inert hydrocarbon, and b. withdrawing produced polymer from the reactor, said interlock being based on the temperature in the reactor, and comprising: 1. measuring the temperature in the reactor or a temperature representative of the temperature in the reactor, and 2. comparing said measured temperature to a threshold temperature, said interlock being characterized in that withdrawal is allowed if the measured temperature is greater than the threshold temperature but is prevented if the measured temperature is lower than the threshold temperature.Type: GrantFiled: June 28, 2011Date of Patent: September 30, 2014Assignee: Ineos Sales (UK) LimitedInventors: Jean-Louis Chamayou, Stephen Kevin Lee
-
Patent number: 8846834Abstract: Mineral oil is added to a supported chromium catalyst in amounts which maintain a free flowing particulate material. Chromium catalysts so treated, provide polyethylene in a gas phase ethylene polymerization process with reduced reactor fouling or static.Type: GrantFiled: April 30, 2012Date of Patent: September 30, 2014Assignee: NOVA Chemicals (International) S.A.Inventors: Xiaoliang Gao, Patrick Drew Evans
-
Publication number: 20140288258Abstract: The invention relates to A process for the polymerisation of ethylene to produce a polyethylene resin in at least two slurry loop reactors connected to each other in series, the resin having a bimodal molecular weight distribution, a molecular weight distribution MWD of at least 7.0, an HLMI of from 1 to 100 g/10 min, and a density of from 0.935 to 0.960 g/cm3, wherein in one reactor 30 to 47 wt % based on the total weight of the polyethylene resin of a high molecular weight (HMW) polyethylene fraction is produced having an HL275 of from 0.05 to 1.8 g/10 min (the equivalent of HLMI of from 0.01 to 1.56 g/10 min), a density of from 0.925 to 0.942 g/cm3 and an MWD of at least 5.0, and in the other reactor a low molecular weight (LMW) polyethylene fraction is produced having an HLMI of from 10 to 1500 g/10 min and a density of from 0.960 to 0.975 g/cm3, in the presence of a Ziegler-Natta catalyst system.Type: ApplicationFiled: June 9, 2014Publication date: September 25, 2014Inventors: Aurélien Vantomme, Daniel Siraux, Alain Van Sinoy, Jean-Léon Gielens
-
Publication number: 20140288256Abstract: Disclosed are a method for preparing gelatinized pre-oriented filaments and the gelatinized pre-oriented filaments prepared by the method. The method comprises: feeding a spinning dope into a twin-screw extruder for blending and extruding the same to obtain a first spinning solution having a non-Newtonian index of 0.1-0.8 and a structural viscosity index of 10-50; feeding the first spinning solution into a spinning box, and drawing at a spinneret with a factor of 5-20 so as to obtain a second spinning solution; and flash cooling and curing the second spinning solution so as to obtain the gelatinized pre-oriented filaments. Also provided are a method for preparing ultra-high molecular weight polyethylene fibers by using the above method and the fibers prepared by this method.Type: ApplicationFiled: June 8, 2012Publication date: September 25, 2014Applicant: BEIJING TONGYIZHONG SPECIALTY FIBRE TECHNOLOGY & DEVELOPMENT CO., LTD.Inventors: Peng He, Xingliang Huang, Fengqi Lin
-
Publication number: 20140288257Abstract: The invention provides a high pressure polymerization process to form an ethylene-based polymer, the process comprising at least the following steps: feeding ethylene to a first reaction zone and to one or more subsequent reaction zones, and wherein for each subsequent reaction zone that receives fresh ethylene, the ratio, Rn (n=reaction zone number, n>1), of “mass fraction of fresh ethylene fed to the first reaction zone (RZ1)” to “mass fraction of fresh ethylene fed to the nth reaction zone (RZn)” is (Rn=RZ1/RZn) greater than 1, or is from 0 to 0.Type: ApplicationFiled: October 10, 2012Publication date: September 25, 2014Applicant: Dow Global Technologies LLCInventors: Werner Zschoch, Otto J. Berbee, Cornelis J. Hosman
-
Publication number: 20140275455Abstract: The invention relates to a metallocene complex according to the following formula (1) wherein R1 and R2 are the same or different and are a substituted or unsubstituted, linear or branched, hydrocarbyl group comprising 1 to 30 carbon atoms; M is titanium, zirconium, or hafnium and X1 and X2 are the same and are halogen or a hydrocarbyl group comprising 1 to 20 carbon atoms.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Applicant: SAUDI BASIC INDUSTRIES CORPORATIONInventors: Haif AL-SHAMMARI, Jason MORTON, Douglas STEPHAN
-
Publication number: 20140275462Abstract: An ethylene polymer having a density greater than about 0.930 g/ml and a level of long chain branching ranging from about 0.001 LCB/103 carbons to about 1.5 LCB/103 carbons as determined by SEC-MALS. An ethylene polymer having a level of short chain branching ranging from about 0 to about 10 mol. % and a level of long chain branching ranging from about 0.001 LCB/103 carbons to about 1.5 LCB/103 carbons as determined by SEC-MALS. An ethylene polymer having a polydispersity index ranging from about 8 to about 25 and a level of long chain branching ranging from about 0.001 LCB/103 carbons to about 1.5 LCB/103 carbons as determined by SEC-MALS.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Inventors: Qing YANG, Max P. MCDANIEL, Joel L. MARTIN, Tony R. CRAIN, Steve M. WHARRY, Carlos A. CRUZ, Jared L. BARR, Youlu YU
-
Patent number: 8835576Abstract: Provided are processes and systems for recovering hydrocarbons in a vent stream from a polymerization process. The methods and systems may include the recovery of an olefin monomer from a polymerization vent gas using ethylene refrigeration to condense and recover the olefin monomers from the vent gas. In some embodiments, the methods and systems may also include compression and condensation of polymerization vent gas, recompression of ethylene refrigerant, and use of an expander compressor turbine device for ethylene refrigeration.Type: GrantFiled: July 7, 2011Date of Patent: September 16, 2014Inventors: Randall L. Force, Donald A. Fischer
-
Publication number: 20140250835Abstract: A method for detecting and removing foreign particles in polymeric resin powder comprising drying the resin powder; removing static energy from the resin powder; producing a layer of resin powder 0.2 to 0.8 mm in height in a feeding tray which feeds a conveyor; conveying the layer of resin powder with a transparent conveyor belt at a speed of between 12.2 and 36.64 meters/minute into a foreign particle detection zone; illuminating the polymeric resin powder in the detection zone from above and below with a light; continuously imaging the resin powder from above with a high speed digital CCD camera; continuously analyzing the images with a control device to detect particles having nonwhite colors; and actuating a suction system with the controller to suction off any detected particles to produce a polymeric resin powder having a reduced number of foreign particles.Type: ApplicationFiled: March 5, 2013Publication date: September 11, 2014Applicant: HOWMEDICA OSTEONICS CORP.Inventors: Balaji Prabhu, Jerome Mascles
-
Patent number: 8828529Abstract: A unimodal polymeric resin having a density of from about 0.946 g/ml to about 0.97 g/ml and a zero shear viscosity of from about 8×102 Pa-s to about 6×104 Pa-s. A method comprising (a) providing a catalyst system comprising a half-sandwich transition metal complex; (b) contacting the catalyst system with an olefin under conditions suitable to form a polyolefin, wherein the polyolefin is unimodal; and (c) recovering the polyolefin, wherein the polyolefin has a density of from about 0.946 g/ml to about 0.97 g/ml and a zero shear viscosity of from about 8×102 Pa-s to about 6×104 Pa-s. A unimodal polymeric resin having a density of from about 0.946 g/ml to about 0.97 g/ml and a CY-a parameter of from about 0.5 to about 0.6.Type: GrantFiled: September 24, 2010Date of Patent: September 9, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Guylaine St. Jean, Errun Ding, Chung Tso, Qing Yang, Albert P. Masino, Joel L. Martin
-
Patent number: 8829137Abstract: Polyethylene films having a good balance of optical and mechanical properties are disclosed. The films are derived from ethylene copolymer compositions made with a suitably substituted phosphinimine catalyst. The ethylene copolymers have very narrow molecular weight distributions and broadened comonomer distributions.Type: GrantFiled: February 27, 2012Date of Patent: September 9, 2014Assignee: Nova Chemicals (International) S.A.Inventors: Patrick Lam, Victoria Ker, Charles Ashton Garret Carter, Benjamin Milton Shaw, Cliff Robert Baar, Alexei Kazakov, Ian Douglas McKay, Dusan Jeremic
-
Patent number: 8829124Abstract: The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor.Type: GrantFiled: December 2, 2013Date of Patent: September 9, 2014Assignee: Total Research & Technology FeluyInventors: Eric Damme, Louis Fouarge, Jerome Bette, Alvaro Fernandez, Aurelien Vantomme, Renaud Oreins, Daniel Siraux
-
Publication number: 20140249287Abstract: The present invention relates to a process for operating a vertical fixed bed polymer powder degasser.Type: ApplicationFiled: October 3, 2012Publication date: September 4, 2014Applicant: Ineos Europe AGInventors: Jean-Louis Chamayou, Luc Girardot
-
Patent number: 8822608Abstract: A system and method for producing polyolefin, including a polyolefin reactor system having: a first reactor to produce a first reactor discharge stream having a first polyolefin and a first diluent; and a second reactor to receive at least a portion of the first reactor discharge stream and to produce a second reactor discharge stream having a second polyolefin and a second diluent, wherein the second diluent is different than the first diluent.Type: GrantFiled: March 12, 2013Date of Patent: September 2, 2014Assignee: Chevron Phillips Chemical Co. LP.Inventors: Maruti Bhandarkar, Elizabeth A Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
-
Patent number: 8822612Abstract: The present invention relates to the field of ethylene polymerization with a supported late transition metal catalyst system.Type: GrantFiled: October 28, 2010Date of Patent: September 2, 2014Assignee: Total Research & Technology FeluyInventors: Sabine Sirol, Olivier Lhost
-
Publication number: 20140242332Abstract: A cover for a body, including at least one layer having a low emissivity coefficient for radiation associated with radiative heat loss from the body with wavelengths in a first frequency band.Type: ApplicationFiled: August 2, 2012Publication date: August 28, 2014Applicant: SUNBUBBLE LIMITEDInventors: Alan Sinclair Tucker, Campbell James Whyte, Charlie Michael Borrell, Edward Frederick Burger, George Ross Arana Bell, John Rombulow Pearse
-
Publication number: 20140242304Abstract: An artificial turf comprising a turf yarn prepared from an ethylene-based polymer composition comprising less than or equal to 100 percent by weight of the units derived from ethylene; and less than 30 percent by weight of units derived from one or more ?-olefin comonomers; wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant of equal to or greater than 40, a vinyl unsaturation of less than 100 vinyls per one million carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) equal to or greater than 1.75; a density in the range of 0.915 to 0.930 g/cm3, a melt index (12) in the range of from 0.8 to 5 g/10 minutes, a molecular weight distribution (Mw/Mn) in the range of from 2 to 3.6, and a molecular weight distribution (Mz/Mw) equal to or less than 3; and wherein the turf yarn exhibits one or more of the following properties (a) shrink of less than 4.8%, and (b) curl of less than 0.5 is provided.Type: ApplicationFiled: October 24, 2011Publication date: August 28, 2014Inventors: Peter Sandkuehler, Selim Bensason
-
Patent number: 8816024Abstract: A polymerization reactor system includes features for operating two or more reactors in series or parallel. The system includes a discharge line coupled to an outlet of a first polymerization reactor, a first conduit connecting the first polymerization reactor to a second polymerization reactor via the discharge line, a second conduit connecting the first polymerization reactor to a flashline apparatus via the discharge line, and a diverter valve coupling the first and second conduits to the discharge line. The diverter valve is configured to selectively open the discharge line to the first conduit and close the discharge line to the second conduit in a first valve state and to selectively open the discharge line to the second conduit and close the discharge line to the first conduit in a second valve state. The diverter valve is capable of switching between the first and second valve states.Type: GrantFiled: November 28, 2012Date of Patent: August 26, 2014Assignee: Chevron Phillips Chemical Company LPInventor: John D. Hottovy
-
Patent number: 8802768Abstract: A novel polymer composition is described comprising ethylene homopolymers and/or copolymers of ethylene with C3-C8-alpha-olefins which polymer composition has a density of from 0.940 to 0.949 g/cm3, a melt index (HLMI) according to DIN EN ISO 1133:2005, condition G at 190° C. and 21.6 kg, of from 3 to 7 g/10 min. and a Hostalen Long Chain Branching Index (HLCBI) of from 3 to 8, and which polymer composition is produced by polymerisation with one or more Ziegler catalysts in a series of at least two polymerization reactors. The new polymer composition can in particular be used for blow moulding of intermediate bulk containers.Type: GrantFiled: April 19, 2012Date of Patent: August 12, 2014Assignee: Basell Polyolefine GmbHInventors: Diana Dotsch, Bernd Lothar Marczinke, Gerhardus Meier, Maclovio Herrera Salinas
-
Patent number: 8802802Abstract: Disclosed is a method for producing polyethylene films which have high resistance to deformation or elongation under loading in tension. The method comprises orienting in the machine direction (MD) a high density polyethylene film at a drawdown ratio effective to give the film an MD tensile strength at yield greater than or equal to 50,000 psi, wherein the HDPE has a density greater than 0.940 g/cm3.Type: GrantFiled: April 16, 2013Date of Patent: August 12, 2014Assignee: Equistar Chemicals, LPInventor: D. Ryan Breese
-
Patent number: 8802794Abstract: Interlock for use in a process for degassing of a polymer powder in a degassing vessel. The interlock includes the steps of 1. measuring the temperature of the polymer powder within or exiting the degassing vessel, 2. comparing the measurement value to a threshold value in order to ascertain whether it is lower than the threshold value or not, and 3. if the measured temperature is lower than the threshold value taking one or more actions to reduce the concentration of hydrocarbons in the polymer powder exiting the degassing vessel and/or to stop the polymer powder withdrawal from that degassing vessel.Type: GrantFiled: June 28, 2011Date of Patent: August 12, 2014Assignee: Ineos Commercial Services UK LimitedInventors: Jean-Louis Chamayou, Gregori Patrick Liotard, Kevin Peter Ramsay
-
Publication number: 20140220280Abstract: The present disclosure relates to a process for recycling of plastic waste comprising: segregating plastic waste collected from various sources followed by cleaning of the segregated plastic waste to obtain segregated cleaned waste; grinding of the segregated cleaned waste to obtain grinded waste; introducing the grinded waste into an extrusion line having a venting extruder component as part of the extrusion line, to obtain molten plastic; and removing the impurities by vacuum venting of the molten plastic to obtained recycled plastic free from impurities. The present disclosure further relates to various articles like Industrial Post Recycled (IPR) plastic tubes, blow moulded bottles, pallates, manufactured from the recycled plastic waste.Type: ApplicationFiled: June 19, 2012Publication date: August 7, 2014Applicant: ESSEL PROPACK LTD.Inventors: Natarasan Sethu, Chandrashekhar Ramchandra Abhyankan, Mrinal Kanti Banerjee
-
Patent number: 8796409Abstract: The invention describes the preparation of long chain branching in high density polyethylene by using metallocene catalysts in the presence of ethylene.Type: GrantFiled: October 4, 2011Date of Patent: August 5, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Mosha H. Zhao, Cesar A. Garcia-Franco, Patrick Brant