Patents Assigned to NOVA Chemicals (International) S.A.
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Patent number: 11401392Abstract: Barrier films are prepared from a composition comprising 1) a blend of two high density polyethylene HDPE blend components, 2) zinc glycerolate and 3) a dispersion aid/synergist. The two high density polyethylene blend components have substantially different melt indices. It is difficult to properly mix the zinc glycerolate into this HDPE blend. The use of the dispersion aid/synergist improves the water vapor transmission rate (WVTR) of polyethylene film (in comparison to barrier films made with zinc glycerolate, in the absence of the dispersion aid/synergist). The resulting barrier films are suitable for the preparation of packaging for dry foods such as crackers and breakfast cereals.Type: GrantFiled: November 13, 2019Date of Patent: August 2, 2022Assignee: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Derek Wasylenko, Owen Lightbody, Tony Tikuisis, P. Scott Chisholm
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Publication number: 20220227977Abstract: Large volumes of recycled polyethylenes are available for reuse. It would be desirable to prepare films from recycled polyethylene, however, the technical demands for many types of films can make this very difficult. Provided herein are films, for example, stretch films; shrink films; films for vacuum packages and films for dunnage packaging, that may be prepared from a blend of recycled polyethylene with “virgin” polyethylene.Type: ApplicationFiled: May 1, 2020Publication date: July 21, 2022Applicant: NOVA Chemicals (International) S.A.Inventors: Monika KLECZEK, John BAYLEY
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Publication number: 20220227902Abstract: A polyethylene composition having a high flow index and a bimodal composition provides an outstanding combination of environmental stress crack resistance (ESCR) and ductility in rotomolded articles. The composition is easy to process/mold.Type: ApplicationFiled: May 25, 2020Publication date: July 21, 2022Applicant: NOVA Chemicals (International) S.A.Inventors: Celine Bellehumeur, Brian Molloy
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Publication number: 20220227978Abstract: 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 22, 2022Publication date: July 21, 2022Applicant: 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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Patent number: 11359081Abstract: A polyethylene composition includes a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 15,000 to 100,000 and a molecular weight distribution Mw/Mn of <2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of >2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition has a soluble fraction in a CEF analysis of at least 10 weight percent. Film made from the polyethylene composition may have a machine direction 1% secant modulus of ?190 MPa (at a film thickness of about 1 mil), a seal initiation temperature (SIT) of ?100° C.Type: GrantFiled: July 11, 2019Date of Patent: June 14, 2022Assignee: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: XiaoChuan Wang, Peter Zoricak, Brian Molloy, Qinyan Wang, Lawrence VanAsseldonk, Norman Aubee
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Patent number: 11352485Abstract: A polyethylene composition comprises a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 50,000 to 200,000 and a molecular weight distribution Mw/Mn of <2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 70,000 to 200,000 and a molecular weight distribution Mw/Mn of <2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition has a composition distribution breadth index, CDBI50 obtained from a crystallization elution fractionation (CEF) analysis of <45 weight %.Type: GrantFiled: July 10, 2019Date of Patent: June 7, 2022Assignee: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: XiaoChuan Wang, Peter Zoricak, Brian Molloy, Qinyan Wang, Lawrence VanAsseldonk, Norman Aubee
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Publication number: 20220169758Abstract: The devolatilization of plastomer pellets is undertaken using nitrogen that is recycled in the process. Volatile hydrocarbons are removed from the nitrogen in a hydrocarbon extraction vessel (e.g. an adsorbent bed). In an embodiment, the recycled nitrogen contains less than 300 ppm of volatile hydrocarbons after being treated in the adsorbent bed.Type: ApplicationFiled: February 27, 2020Publication date: June 2, 2022Applicant: NOVA Chemical (International) S.A.Inventors: Abolfazl Noorjahan, Stephen Brown, Lawrence Van Asseldonk, Robert Van Asseldonk, Jeffrey Cahill, Carlos Duque, William Oberg
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Publication number: 20220169763Abstract: A phosphinimide catalyst system comprises: i) a phosphinimide pre-polymerization catalyst having two phosphinimide ligands, at least one of which is substituted by a phosphinimide moiety; and ii) a catalyst activator. The catalyst system polymerizes ethylene with an alpha-olefin to give high molecular weight ethylene copolymer.Type: ApplicationFiled: March 31, 2020Publication date: June 2, 2022Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventor: Cheng Fan
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Publication number: 20220169584Abstract: This document relates to oxidative dehydrogenation catalysts that include molybdenum, vanadium, and oxygen.Type: ApplicationFiled: December 9, 2021Publication date: June 2, 2022Applicant: NOVA Chemicals (International) S.A.Inventors: Xiaoliang Gao, Marie Barnes, Vasily Simanzhenkov, Elena Sebastiao, David Sullivan, Yoonhee Kim
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Patent number: 11345798Abstract: A dual reactor solution process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have good processability, stiffness, and environmental stress crack resistance. The polyethylene compositions are suitable for compression molding or injection molding applications and are particularly useful in the manufacture of caps and closures for bottles.Type: GrantFiled: November 12, 2019Date of Patent: May 31, 2022Assignee: NOVA Chemicals (International) S.A.Inventor: XiaoChuan Wang
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Publication number: 20220162242Abstract: A phosphinimide catalyst system comprises: i) a phosphinimide pre-polymerization catalyst having a cyclopentadienyl ligand and a phosphinimide ligand which is substituted with a guanidinate type group; and ii) a catalyst activator. The catalyst system polymerizes ethylene with an alpha-olefin to give high molecular weight ethylene copolymer.Type: ApplicationFiled: March 31, 2020Publication date: May 26, 2022Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventor: Cheng Fan
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Patent number: 11339278Abstract: A polyethylene composition includes a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 15,000 to 100,000, a molecular weight distribution Mw/Mn of >2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of >2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition has a soluble fraction in a CEF analysis of at least 10 weight percent. Film made from the polyethylene composition may have a machine direction 1% secant modulus of 200 ?MPa (at a film thickness of about 1 mil), a seal initiation temperature (SIT) of ?90° C.Type: GrantFiled: July 11, 2019Date of Patent: May 24, 2022Assignee: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: XiaoChuan Wang, Peter Zoricak, Brian Molloy, Qinyan Wang, Lawrence VanAsseldonk, Norman Aubee
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Patent number: 11338274Abstract: Provided in this disclosure are oxidative dehydrogenation catalysts that include a mixed metal oxide having the empirical formula: Mo1.0V0.12-0.49Te0.05-0.17Nb0.10-0.20Od wherein d is a number to satisfy the valence of the oxide. The oxidative dehydrogenation catalyst is characterized by having XRD diffraction peaks (2? degrees) at 22±0.2, 27±0.2, 28.0±0.2, and 28.3±0.1. The disclosure also provides methods of making the catalysts that include wet ball milling.Type: GrantFiled: August 1, 2019Date of Patent: May 24, 2022Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Xiaoliang Gao, Marie Barnes, David Sullivan, Yoonhee Kim, Perry de Wit
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Publication number: 20220153771Abstract: A one pot synthetic method for making a bridged cyclopentadienyl/fluorenyl type ligand and the corresponding ansa metallocene polymerization catalyst. In a key step, a cyclopentadienide/fluorenide dianion is prepared by combining a fluorene compound, a fulvene compound, and at least 2 molar equivalents of KN(SiMe3)2 in any order in the presence of an ether solvent under ambient conditions. Reaction of the cyclopentadienide/fluorenide dianion with a Group IV transition metal chloride, followed by alkylation gives a metallocene polymerization catalyst in good yields.Type: ApplicationFiled: March 16, 2020Publication date: May 19, 2022Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Charles Carter, Janelle Smiley-Wiens
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Publication number: 20220154927Abstract: The present disclosure seeks to provide a metallic burner tile for use in industrial processes such as cracking. The tile is substantially metallic (e.g. more than 80%) with the balance being ceramic coating on surfaces exposed to high temperature. The tile is lighter and more durable than the current ceramic burners.Type: ApplicationFiled: February 3, 2022Publication date: May 19, 2022Applicant: NOVA Chemicals (International) S.A.Inventors: Jeffrey Stephen Crowe, Eric Clavelle, Leslie Wilfred Benum, Vasily Simanzhenkov, Lucas MacNeil Harding
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Patent number: 11312845Abstract: 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: GrantFiled: March 23, 2020Date of Patent: April 26, 2022Assignee: 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: 20220119628Abstract: The copolymerization of ethylene with a cyclic mono olefin (such as norbornene) is conducted in the presence of a catalyst system comprising a bridged hafnocene catalyst and a three part activator. The catalyst system provides excellent activity at high polymerization temperatures. Copolymers produced according to this invention have unique microstructure (with methyl branching being observed) and unique rheology.Type: ApplicationFiled: October 11, 2019Publication date: April 21, 2022Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Qinyan WANG, XiaoChuan WANG, Peter ZORICAK, Steven CLEMENS, Brian MOLLOY
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Publication number: 20220119933Abstract: An anti-coking surface having a thickness up to 15 microns comprising from 15 to 50 wt. % of MnCr2O4 (for example manganochromite); from 15 to 25 wt. % of Cr0.23Mn0.08Ni0.69 (for example chromium manganese nickel); from 10 to 30 wt. % of Cr1.3Fe0.7O3 (for example chromium iron oxide); from 12 to 20 wt. % of Cr2O3 (for example eskolaite); from 4 to 20 wt. % of CuFe5O8 (for example copper iron oxide); and less than 5 wt. % of one or more compounds chosen from FeO(OH), CrO(OH), CrMn, Si and SiO2 (either as silicon oxide or quartz) and less than 0.5 wt. % of aluminum in any form provided that the sum of the components is 100 wt. % is provided on steel.Type: ApplicationFiled: October 27, 2021Publication date: April 21, 2022Applicant: NOVA Chemicals (International) S.A.Inventors: Evan Mah, Vasily Simanzhenkov, Leslie Benum, Hany Farag, Bolaji Olayiwola
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Patent number: 11306044Abstract: Provided in this disclosure is a process for the oxidative dehydrogenation of a lower alkane into a corresponding alkene. The process includes providing a gas stream comprising the lower alkane to a reactor; contacting, in the oxidative dehydrogenation reactor, the lower alkane with a catalyst that includes a mixed metal oxide; and providing to the last 50% of the oxidative dehydrogenation reactor a stream comprising from 0.01 vol. % to 10 vol. % of a C1-C3 alcohol.Type: GrantFiled: May 10, 2021Date of Patent: April 19, 2022Assignee: NOVA Chemicals (International) S.A.Inventors: Bolaji Olayiwola, Vasily Simanzhenkov, Shahin Goodarznia, Mohamed Aiffa
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Patent number: 11306196Abstract: A polyethylene composition including a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of less than 75,000 and a molecular weight distribution Mw/Mn of <2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 100,000 to 300,000 and a molecular weight distribution Mw/Mn of >2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition has a soluble fraction in a CEF analysis of at least 15 weight percent.Type: GrantFiled: July 10, 2019Date of Patent: April 19, 2022Assignee: NOVA Chemicals (International) S.A.Inventors: XiaoChuan Wang, Peter Zoricak, Brian Molloy, Qinyan Wang, Lawrence VanAsseldonk, Norman Aubee