Patents Assigned to NOVA Chemicals (International) S.A.
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Patent number: 10730036Abstract: A process for preparing an oxidative dehydrogenation catalyst or oxidative dehydrogenation catalyst precursor that includes mixing solutions of molybdenum and tellurium at a pH from about 3.3 to 7.5; adjusting the pH of the resulting solution back to about 5 and adding VOSO4 and adding a solution of Nb2O5 and oxalic acid and treating the resulting precursor slurry in a controlled pressure hydrothermal process to obtain the catalyst.Type: GrantFiled: January 30, 2019Date of Patent: August 4, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Xiaoliang Gao, Vasily Simanzhenkov, Marie Barnes, David Sullivan, Hanna Drag, Yoonhee Kim, Perry de Wit
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Publication number: 20200238260Abstract: Oxidative dehydrogenation catalysts for converting lower paraffins to alkenes such as ethane to ethylene when prepared as an agglomeration, for example extruded with supports chosen from slurries of TiO2, ZrO2 Al2O3, AlO(OH) and mixtures thereof have a lower temperature at which 25% conversion is obtained.Type: ApplicationFiled: April 13, 2020Publication date: July 30, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Yoonhee Kim, Vasily Simanzhenkov, Xiaoliang Gao, David Sullivan, Marie Annette Barnes, Renee Laurel Anseeuw, Yipei Styles
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Publication number: 20200238250Abstract: The various embodiments of the present invention relate to a polymerization reactor where the agitator mixing performance is optimized for use with a high activity catalyst and methods for developing the same.Type: ApplicationFiled: March 12, 2020Publication date: July 30, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Yves Lacombe, Eric Clavelle, Stephen Salomons, Andrew Hawryluk, Stephen John Brown, Marion Walls
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Publication number: 20200224012Abstract: A dual reactor solution polymerization process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer. The polyethylene compositions can be used in the manufacture of injection molded closures or cast film having good barrier properties.Type: ApplicationFiled: January 17, 2020Publication date: July 16, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: XiaoChuan Wang, Stephen Salomons
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Publication number: 20200224013Abstract: This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, ?int., greater than or equal to 0.01, satisfying 0.01×(Z?50)0.78??int.?0.01×(Z?60)0.78 inequality wherein Z is a normalized molecular weight defined by Z = M w M e where Mw and Me are the weight average and entanglement molecular weights, and; a residual catalytic metal of from ?0.03 to ?5 ppm of hafnium. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.855 to about 0.975 g/cc, a polydispersity, M w M n , from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.Type: ApplicationFiled: March 23, 2020Publication date: July 16, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Soheil Sadeghi, Fazle Sibtain, Zengrong Zhang, Niousha Kazemi, Monika Kleczek, Vinod Konaganti, Bronwyn Gillon, Shivendra Goyal, Sepideh Kasiri, Stephen Salomons, Kenneth Taylor, Mehdi Keshtkar
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Publication number: 20200216645Abstract: This disclosure relates to ethylene interpolymer product having intermediate branching. Intermediate branching was defined as branching that was longer than the branch length due to comonomer and shorter than the entanglement molecular weight (Me). Intermediately branched ethylene interpolymer products were produced in a continuous solution polymerization process employing an intermediate branching catalyst formulation. Intermediately branched ethylene interpolymer products were characterized by a Non-Comonomer Index Distribution (NCIDi), a melt index from 0.3 to 500 dg/minute, a density from 0.858 to 0.965 g/cm3, a polydispersity (Mw/Mn) from about 2 to about 25 and a CDBI50 from about 10% to about 98%. A method based on triple detection cross fractionation chromatography (3D-CFC) was disclosed to measure NCIDi.Type: ApplicationFiled: January 9, 2019Publication date: July 9, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Zengrong Zhang, Fazle Sibtain, Niousha Kazemi, Kenneth Taylor, Shivendra Goyal
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Patent number: 10695754Abstract: Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420° C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with H2O2 in an amount equivalent to 0.30-2.8 mL H2O2 of a 30% solution per gram of catalyst precursor prior to calcining.Type: GrantFiled: May 24, 2019Date of Patent: June 30, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Xiaoliang Gao, David Jeffrey Sullivan, Hanna Drag, Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina
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Publication number: 20200199338Abstract: A polymer suitable for use in a thin film hinge (living hinge) comprising from about 0.1 to about 5 weight % of a C4-8 comonomer and the balance ethylene, said composition having a density as determined according to ASTM D 792 from about 0.945 to about 0.965 g/cm3; a melt index as determined according to ASTM D1238 (2.16 kg/190° C.) from about 10 to about 20 g/10 min; a weight average molecular weight (Mw) from about 45,000 to about 55,000 g/mol; a polydispersity from about 2.5 to about 3.1 and when molded into a strip having a length of about 13 cm and gross thickness from about 50 to about 70 mil (about 1 to about 2 mm) and completely bent over end to end four times to create a thinned region or crease having a thickness from about 15 to about 30 mil (about 0.3 to about 0.7 mm) tested by bending and releasing the deformed thinned region of the strip through a radius of curvature from about 180 to about 190° about a rounded plate goes through not less than 500 cycles without breaking.Type: ApplicationFiled: March 5, 2020Publication date: June 25, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Jason Michael Rycroft, Gilbert Alexander Arnould, Matthew Zaki Botros, Mark Rejman
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Patent number: 10683376Abstract: This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered.Type: GrantFiled: November 7, 2017Date of Patent: June 16, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Niousha Kazemi, Monika Kleczek, Vinod Konaganti, Bronwyn Gillon, Shivendra Kumar Goyal, Fazle Sibtain, Sepideh Kasiri, Stephen Salomons, Kenneth Edward Taylor, Mehdi Keshtkar
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Patent number: 10675605Abstract: The various embodiments of the present invention relate to a polymerization reactor where the agitator mixing performance is optimized for use with a high activity catalyst and methods for developing the same.Type: GrantFiled: January 4, 2016Date of Patent: June 9, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Yves Lacombe, Eric Clavelle, Stephen Salomons, Andrew Hawryluk, Stephen John Brown, Marion Walls
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Patent number: 10676552Abstract: The disclosure provides an ethylene copolymer having a density of from 0.912 g/cm3 to 0.925 g/cm3, a melt flow ratio (I21/I2) of from 20 to 30, and a normal comonomer distribution profile in a GPC-FTIR analysis, wherein the normal comonomer distribution profile has a slope of from ?3.5 to ?7.5, where the slope is defined as the number of short chain branches per 1000 carbons at a molecular weight of 300,000 minus the number of short chain branches per 1000 carbons at a molecular weight of 30,000. The ethylene copolymers have improved bulk density and when made into film, provide good physical properties.Type: GrantFiled: May 21, 2018Date of Patent: June 9, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Patrick Lam, Victoria Ker, Mark Kelly
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Publication number: 20200171469Abstract: A catalyst for oxidative dehydrogenation (ODH) of ethane with an empirical formula Mo—V—Te—Nb—Pd—O produced using a process comprising impregnation of the Pd component on the surface of the catalyst following a calcination step using a Pd compound free of halogens. The resulting catalyst can be used in both diluted and undiluted ODH processes and shows higher than expected activity without any loss of selectivity.Type: ApplicationFiled: January 20, 2020Publication date: June 4, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Xiaoliang Gao, David Jeffrey Sullivan, Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina
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Publication number: 20200171468Abstract: A catalyst for oxidative dehydrogenation (ODH) of ethane with an empirical formula Mo—V—Te—Nb—Pd—O produced using a process comprising impregnation of the Pd component on the surface of the catalyst following a calcination step using a Pd compound free of halogens. The resulting catalyst can be used in both diluted and undiluted ODH processes and shows higher than expected activity without any loss of selectivity.Type: ApplicationFiled: January 20, 2020Publication date: June 4, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Xiaoliang Gao, David Jeffrey Sullivan, Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina
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Patent number: 10668441Abstract: Incorporating into a fixed bed reactor for an exothermal reaction having a catalyst supported on a support having a thermal conductivity typically less than 30 W/mk within the reaction temperature control limits heat dissipative particles having a thermal conductivity of at least 50 W/mk less than 30 W/mk within the reaction temperature control limits helps control the temperature of the reactor bed.Type: GrantFiled: September 8, 2016Date of Patent: June 2, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Kamal Elias Serhal, Shahin Goodarznia
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Patent number: 10669355Abstract: Provided in this disclosure are organometallic complexes that contain i) a metal atom selected from Hf and Zr; 2) a phosphinimine ligand; 3) an amido-ether ligand and at least one other ancillary ligand. The use of such a complex, in combination with an activator, as an olefin polymerization catalyst is demonstrated. The catalysts are effective for the copolymerization of ethylene with an alpha olefin (such as 1-butene, 1-hexene, or 1-octene) and enable the production of high molecular weight copolymers (Mw greater than 25,000) with good comonomer incorporation at high productivity.Type: GrantFiled: April 25, 2019Date of Patent: June 2, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Darryl Morrison, P. Scott Chisholm, Cliff Baar, Graham Lee, Janelle Smiley-Wiens
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Patent number: 10668454Abstract: The preparation of an oxidative dehydrogenation catalyst comprising Mo, V, Nb and Te using a hydrothermal step. In some embodiments, the activity and reproducibility of the catalyst is improved by conducting the hydrothermal step while permitting gaseous products to leave the reactor. In some instances a condenser may be upstream of the outlet of the reactor.Type: GrantFiled: October 10, 2017Date of Patent: June 2, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Xiaoliang Gao, David Jeffrey Sullivan
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Publication number: 20200165422Abstract: This disclosure relates to a continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst formulation are injected into a first reactor forming a first ethylene interpolymer. Process solvent, ethylene, optional comonomers, optional hydrogen and a heterogeneous catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in an optional third reactor, wherein an optional heterogeneous catalyst formulation may be employed. In a solution phase, the first, second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is passivated and following a phase separation process an ethylene interpolymer product is recovered.Type: ApplicationFiled: January 24, 2020Publication date: May 28, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Fazle Sibtain, Christopher John Brooke Dobbin, Donald Gary Hartlen, Kenneth Edward Taylor, Hamidreza Khakdaman
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Patent number: 10661256Abstract: Oxidative dehydrogenation catalysts for converting lower paraffins to alkenes such as ethane to ethylene when prepared as an agglomeration, for example extruded with supports chosen from slurries of TiO2, ZrO2 Al2O3, AlO(OH) and mixtures thereof have a lower temperature at which 25% conversion is obtained.Type: GrantFiled: July 20, 2018Date of Patent: May 26, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Yoonhee Kim, Vasily Simanzhenkov, Xiaoliang Gao, David Sullivan, Marie Annette Barnes, Renee Laurel Anseeuw, Yipei Styles
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Publication number: 20200157023Abstract: A process, a system, and an apparatus are provided for converting a lower alkane to an alkene. Oxygen and the lower alkane are provided to an ODH reactor to convert at least a portion of the lower alkane to an alkene. An ODH stream comprising the alkene, an oxygenate, steam, and a carbon-based oxide is produced. The bulk of the oxygenate is removed from the ODH outlet stream by non-dilutive cooling, with residual oxygenate being removed using dilutive quenching with a carbonate. Subsequently, separation of the carbon-based oxide from the alkene is achieved using a caustic tower, which also produces spent caustic in the form of a carbonate, which is then used as the carbonate for dilutive quenching. Dilutive quenching using a carbonate allows conversion of the oxygenate to an acetate, which can then be used to simplify separation of the oxygenate from water.Type: ApplicationFiled: October 9, 2019Publication date: May 21, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Bolaji Olayiwola, Vasily Simanzhenkov, Shahin Goodarznia, Kamal Serhal
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Publication number: 20200156055Abstract: Oxidative dehydrogenation of alkanes employs a catalyst, usually a mixed metal oxide, to convert, in the presence of oxygen, a lower alkane into its corresponding alkene. Continuous operation of an oxidative dehydrogenation process may result in a gradual decrease of catalyst activity and or selection, requiring downtime for regeneration. Provided herein is a process for regeneration of an oxidative dehydrogenation catalyst including initiating regeneration by passing a regeneration gas over the catalyst, monitoring regeneration by comparing the oxygen concentration of the regeneration gas before and after being passed over the catalyst, and ceasing regeneration when the oxygen concentration of the regeneration gas after passed over the catalyst is at least 90% of the concentration of the regeneration gas before being passed over the catalyst.Type: ApplicationFiled: November 21, 2019Publication date: May 21, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Shahin Goodarznia, Vasily Simanzhenkov, Kamal Serhal