Patents Assigned to Nova Chemical (International) S.A
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Publication number: 20220289953Abstract: 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, toughness, and environmental stress crack resistance. The polyethylene compositions are suitable for the preparation of rotomolded parts.Type: ApplicationFiled: July 2, 2020Publication date: September 15, 2022Applicant: NOVA Chemicals (International) S.A.Inventors: Celine Bellehumeur, Douglas Checknita, Henry Hay, Derek Wasylenko, Tony Tikuisis
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Publication number: 20220267577Abstract: A polyethylene composition which when made into a film layer having a thickness of about 1 mil exhibits a machine direction (MD) 1% secant modulus of ?190 MPa and an oxygen transmission rate (OTR) of ?650 cm3 per 100 inch2 per day, and when made into a film layer having a thickness of about 2 mil exhibits a seal initiation temperature (SIT) of ?100° C. and an area of hot tack window (AHTW) of ?160 Newtons·° C.Type: ApplicationFiled: May 12, 2022Publication date: August 25, 2022Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: XiaoChuan Wang, Peter Zoricak, Brian Molloy, Qinyan Wang, Lawrence VanAsseldonk, Norman Aubee
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Patent number: 11413604Abstract: Provided in this disclosure are catalyst compositions. The catalyst compositions include an oxidative dehydrogenation catalyst that includes a mixed metal oxide having the empirical formula: Mo1.0V0.12-0.49Te0.05-0.17Nb0.10-0.20AlcOd wherein c is from 0 to 2.0 and d is a number to satisfy the valence of the oxide. The compositions are at least 40 wt. % amorphous as measured by XRD. The disclosure also provides methods of making the compositions.Type: GrantFiled: August 1, 2019Date of Patent: August 16, 2022Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Xiaoliang Gao, Marie Barnes, David Sullivan, Yoonhee Kim
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Patent number: 11414538Abstract: 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: GrantFiled: March 5, 2020Date of Patent: August 16, 2022Assignee: NOVA Chemicals (International) S.A.Inventors: Jason Michael Rycroft, Gilbert Alexander Arnould, Matthew Zaki Botros, Mark Rejman
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Publication number: 20220251353Abstract: A polyethylene composition which when made into a film layer having a thickness of about 1 mil has a machine direction (MD) 1% secant modulus of ?200 MPa and an oxygen transmission rate (OTR) of ?600 cm3 per 100 inch2 per day and when made into a film layer having a thickness of about 2 mil has a seal initiation temperature (SIT) of ?90° C. and an area of hot tack window (AHTW) of ?160 Newtons·° C.Type: ApplicationFiled: April 19, 2022Publication date: August 11, 2022Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: XiaoChuan Wang, Peter Zoricak, Brian Molloy, Qinyan Wang, Lawrence VanAsseldonk, Norman Aubee
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Patent number: 11407160Abstract: A multilayer film having Machine Direction Orientation (MDO) is prepared by first co-extruding a multilayer film, then stretching the multilayer film in the machine direction at a temperature lower than the melting point of the polyethylene resin that is used to prepare the film. At least one layer of the film is a first polyethylene composition having a density of from about 0.94 to about 0.97 g/cc and at least one second layer is prepared from a polyethylene composition having a lower density than the first polyethylene composition. This disclosure enables the manufacture of films having outstanding barrier properties (low Water Vapor Transmission Rate, WVTR, and low Oxygen Transmission Rate, OTR) and good physical properties.Type: GrantFiled: June 26, 2020Date of Patent: August 9, 2022Assignee: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Nitin Borse, Norman Aubee
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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