Patents Assigned to Nova Chemical (International) S.A
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Publication number: 20240140012Abstract: A polymer processing aid (PPA) reduces melt defects in extruded polyolefins in the absence of fluoropolymers. The polymer processing aid comprises a polyalkylene glycol such as a polyethylene glycol together with a high pressure low density polyethylene (LDPE) and reduces melt defects well in a thermoplastic polyolefin such as a linear low density polyethylene (LLDPE).Type: ApplicationFiled: January 10, 2024Publication date: May 2, 2024Applicant: NOVA Chemicals (International) S.A.Inventors: Jared Taylor, Tony Tikuisis, P. Scott Chisholm, Norman Aubee, Douglas Checknita
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Patent number: 11958961Abstract: A polyethylene homopolymer composition comprises: a first ethylene homopolymer having a density, d1 of from 0.930 to 0.975 g/cm3, a melt index, I21 of from 0.01 to 10 g/10 min, and a molecular weight distribution, Mw/Mn of less than 2.5; and a second ethylene homopolymer having a density, d2 of from 0.945 to 0.980 g/cm3, a melt index, I22 of at least 1.0 g/10 min, and a molecular weight distribution, Mw/Mn of less than 2.5; wherein melt index, I22 of the second ethylene homopolymer is greater than the melt index, I21 of the first ethylene homopolymer. The polyethylene homopolymer compositions which may be nucleated have a weight average molecular weight, Mw of ?75,000, a molecular weight distribution, Mw/Mn of less than 4.0 and may be usefully employed in molding applications, such as, for example, in compression molded closures.Type: GrantFiled: November 28, 2019Date of Patent: April 16, 2024Assignee: NOVA Chemicals (International) S.A.Inventor: XiaoChuan Wang
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Patent number: 11958962Abstract: A polyethylene homopolymer composition comprises: a first ethylene homopolymer having a density, d1 of from 0.943 to 0.975 g/cm3, a melt index, I21 of from 0.01 to 10 g/10 min, and a molecular weight distribution, Mw/Mn of less than 3.0; and a second ethylene homopolymer having a density, d2 of from 0.950 to 0.985 g/cm3, a melt index, I22 of at least 500 g/10 min, and a molecular weight distribution, Mw/Mn of less than 3.0; wherein the ratio of the melt index, I22 of the second ethylene homopolymer to the melt index, I21 of the first ethylene homopolymer is at least 50. The polyethylene homopolymer compositions which may be nucleated have a weight average molecular weight, Mw of ?75,000, a high load melt index, I21 of at least 200 g/10 min, a molecular weight distribution, Mw/Mn of from 4.0 to 12.0 and may be usefully employed in molding applications, such as, for example, in compression molded closures.Type: GrantFiled: November 28, 2019Date of Patent: April 16, 2024Assignee: NOVA Chemicals (International) S.A.Inventor: XiaoChuan Wang
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Publication number: 20240110024Abstract: A biaxially oriented polyethylene film structure comprises at least three layers, including a core layer, wherein the core layer comprises: i) from 50 to 99.5 weight percent of a first polyethylene which is an ethylene copolymer having a density of greater than 0.940 g/cm3; and ii) from 0.5 to 50 weight percent of a second polyethylene which is a polyethylene homopolymer composition having a density of at least 0.950 g/cm3; wherein the polyethylene homopolymer composition further comprises a nucleating agent or a mixture of nucleating agents. The biaxially oriented film has very good optical properties.Type: ApplicationFiled: April 14, 2022Publication date: April 4, 2024Applicant: NOVA Chemicals (International) S.A.Inventors: Norman AUBEE, Bronwyn GILLON, Christian CARELLO, Jared TAYLOR, Maryam FEREYDOON, Shivendra GOYAL, Owen LIGHTBODY
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Patent number: 11939544Abstract: In chemical processes for cracking hydrocarbons, reactors are subject to coking. This results in carburization of the metal substrate for the reactor leading to a reduced reactor life. If the reactor is subject to a decoke process, followed by a steam scour and nitrogenating there is a reduced tendency to carburization of the metal substrate improving the reactor life.Type: GrantFiled: February 7, 2020Date of Patent: March 26, 2024Assignee: NOVA Chemicals (International) S.A.Inventors: Michael Koselek, Leslie Benum, Vasily Simanzhenkov, Hany Farag
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Publication number: 20240093007Abstract: Polyethylene blends made from recycled polyethylene and a bimodal polyethylene composition are disclosed. The polyethylene blends are suitable for compression molding or injection molding applications and are particularly useful in the manufacture of caps and closures for bottles.Type: ApplicationFiled: October 13, 2020Publication date: March 21, 2024Applicant: NOVA Chemicals (International) S.A.Inventors: XiaoChuan WANG, Brant WUNDERLICH, Derek WASYLENKO, Tony TIKUISIS, Gilbert ARNOULD
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Publication number: 20240052147Abstract: 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 9, 2023Publication date: February 15, 2024Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Qinyan WANG, XiaoChuan WANG, Peter ZORICAK, Steven CLEMENS, Brian MOLLOY
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Publication number: 20240052146Abstract: Ethylene copolymer compositions having a density of 0.902 g/cm3 or less exhibit rapid crystallization behavior. The ethylene copolymer compositions comprise a first ethylene copolymer, a second ethylene copolymer and optionally a third ethylene copolymer, where the number average molecular weight of the first ethylene copolymer is greater than the number average molecular weight of the second ethylene copolymer. The ethylene copolymer compositions are useful in the formation of monolayer and multilayer films.Type: ApplicationFiled: March 1, 2022Publication date: February 15, 2024Applicant: NOVA Chemicals (International) S.A.Inventors: Vinod Konaganti, Shivendra Goyal, Niousha Kazemi, Marcia Pires Fortes Ferreira, Marzieh Ebrahimi, Mehrnaz Rahimi, Stephen Brown
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Patent number: 11891357Abstract: A method that includes (a) providing a stream containing ethane and oxygen to an ODH reactor; (b) converting a portion of the ethane to ethylene and acetic acid in the ODH reactor to provide a stream containing ethane, ethylene, acetic acid, oxygen and carbon monoxide; (c) separating a portion of the acetic acid from the stream to provide an acetic acid stream and a stream containing ethane, ethylene, oxygen and carbon monoxide; (d) providing the stream to a CO Oxidation Reactor containing a catalyst that includes a group 11 metal to convert carbon monoxide to carbon dioxide and reacting acetylene to produce a stream containing ethane, ethylene and carbon dioxide; and (e) providing a portion of the stream and a portion of the acetic acid stream to a third reactor containing a catalyst that includes a metal selected from group 10 and group 11 metals to produce vinyl acetate.Type: GrantFiled: March 8, 2019Date of Patent: February 6, 2024Assignee: NOVA Chemicals (International) S.A.Inventors: David Gent, Shahin Goodarznia, Vasily Simanzhenkov, Kamal Serhal, Claire Ennis, Robert Ladd
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Patent number: 11885489Abstract: 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: GrantFiled: February 3, 2022Date of Patent: January 30, 2024Assignee: 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: 11879693Abstract: Provided herein are components for a fluid network, specifically a U bend structure connected to at least two pipes which is modified for one or more objective functions of interest such as pressure drop, erosion rate, fouling, coke deposition and operating costs. The U bend structure is so designed to have a specific ARQ between 1.0 to 1.02 for 5% of the flow passage from the inlet and from the outlet, and an ARQ from 1.02 to 1.15 over the remaining 90% of the flow passage through an Rb/D ratio being greater than 1 and less than 4.Type: GrantFiled: May 6, 2019Date of Patent: January 23, 2024Assignee: NOVA Chemicals (International) S.A.Inventors: Grazyna Petela, Eric Clavelle, Edgar Yajure
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Patent number: 11867470Abstract: Provided herein are components for a fluid network modified for one or more objective functions of interest such as pressure drop, erosion rate, fouling, coke deposition and operating costs.Type: GrantFiled: January 8, 2020Date of Patent: January 9, 2024Assignee: NOVA Chemicals (International) S.A.Inventors: Grazyna Petela, Eric Clavelle, Edgar Yajure
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Publication number: 20240002561Abstract: The copolymerization of ethylene with vinylcyclohexane (VCH) is carried out with a catalyst system comprising a bridged hafnocene. High levels of vinylcyclohexane incorporation can be achieved affording ethylene-vinylcyclohexane copolymers having low degrees of crystallinity as measured by differential scanning calorimetry (Xc in %). These copolymers have good barrier properties when made into film.Type: ApplicationFiled: December 3, 2021Publication date: January 4, 2024Applicant: NOVA Chemicals (International) S.A.Inventors: XiaoChuan Wang, Peter Zoricak, Brian Molloy
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Patent number: 11859291Abstract: A substrate steel of the comprising from 0.01 to 0.60 wt. % of La, from 0.0 to 0.65 wt. % of Ce; from 0.06 to 1.8 wt. % of Nb up to 2.5 wt. % of one or more trace elements and carbon and silicon may be treated in an oxidizing atmosphere to product a coke resistant surface coating of MnCr2O4 having a thickness up to 5 microns.Type: GrantFiled: March 26, 2021Date of Patent: January 2, 2024Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Hany Farag, Leslie Benum, Billy Santos, Kathleen Donnelly, Nobuyuki Sakamoto, Kunihide Hashimoto, Michael Gyorffy
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Publication number: 20230416429Abstract: The copolymerization of ethylene with vinylcyclohexane is carried out with a catalyst system comprising a bridged hafnocene. When relatively low levels of vinylcyclohexane are incorporated, the ethylene-vinylcyclohexane copolymers have high degrees of crystallinity as measured by differential scanning calorimetry (Xc in %). These copolymers have good thermoformability.Type: ApplicationFiled: December 3, 2021Publication date: December 28, 2023Applicant: NOVA Chemicals (International) S.A.Inventors: XiaoChuan Wang, Peter Zoricak, Brian Molloy
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Patent number: 11827775Abstract: 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: GrantFiled: October 11, 2019Date of Patent: November 28, 2023Assignee: NOVA Chemicals (International) S.A.Inventors: Qinyan Wang, XiaoChuan Wang, Peter Zoricak, Steven Clemens, Brian Molloy
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Patent number: 11828405Abstract: The present invention provides a transfer line exchanger which is optimized for one or more objective functions of interest such as pressure drop, erosion rate, fouling, coke deposition and operating costs. The transfer line exchanger is designed by computer modeling a transfer line exchanger in which the cross section of flow path is substantially circular and modeling the operation of the transfer line under industrial conditions to validate the model design and its operation. Then iteratively the model design is deformed and the operation of the deformed part is modeled and compared to values obtained with other deformed models until the value of the objective function is optimized (e.g. at an extreme) or the change in the objective function is approaching zero.Type: GrantFiled: September 24, 2020Date of Patent: November 28, 2023Assignee: NOVA Chemicals (International) S.A.Inventors: Eric Clavelle, Edgar Yajure, Leslie Wilfred Benum, Edward Christopher Foy, David Eisenhawer
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Patent number: 11807589Abstract: A process, a system, and an apparatus are provided for converting a lower alkane to an alkene. Oxygen and a lower alkane are provided to an ODH reactor. At least a portion of the lower alkane is converted to an alkene and an ODH stream comprising the alkene, an oxygenate, water, and carbon monoxide is produced. The ODH stream is provided to a water gas shift/hydrogenation (WGS/H) reactor including a WGS/H catalyst. The ODH stream is reacted within the WGS/H reactor and hydrogen and carbon dioxide are generated from the carbon monoxide and water. At least a portion of the oxygenate and hydrogen are converted to an alcohol. Additionally, the alcohol may be dehydrated to form additional alkene and water.Type: GrantFiled: December 20, 2019Date of Patent: November 7, 2023Assignee: NOVA Chemicals (International) S.A.Inventors: Shahin Goodarznia, Vasily Simanzhenkov, Bolaji Olayiwola, Yipei Styles
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Publication number: 20230348703Abstract: This disclosure relates to ethylene interpolymer products comprising a Melt Flow-Intrinsic Viscosity Index value, MFIVI, from ?0.05 to ?0.80; a first derivative of a melt flow distribution function, formula (I) at a loading of 4000 g, from >?1.51 to ??1.15; a sum of unsaturation, SUMU, from ?0.005 to <0.047 unsaturations per 100 carbon atoms; and a residual catalytic metal from ?0.03 to ?5 ppm of hafnium. Ethylene interpolymer products comprise at least two ethylene interpolymers. Ethylene interpolymer products are characterized by a melt index (I2) from 0.3 to 500 dg/minute, a density from 0.855 to 0.975 g/cc and from 0 to 25 mole percent of one or more a-olefins. Ethylene interpolymer products have polydispersity, Mw/Mn, from 1.7 to 25; and CDBI50 values from 1% to 98%. These ethylene interpolymer products have utility in flexible as well as rigid applications.Type: ApplicationFiled: May 6, 2021Publication date: November 2, 2023Applicant: NOVA Chemicals (International) S.A.Inventors: Zengrong Zhang, Fazle Sibtain, Stephen Brown, Monika Kleczek
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Publication number: 20230347629Abstract: In some embodiments a Stand Up Pouch (SUP) is prepared using a polyethylene structure having a first web and a second web. The webs are laminated together to form the polyethylene structure that is used to prepare the SUP. One web contains a layer of recycled polyethylene (r.PE). In some instances, the use of r.PE has been observed to reduce the effectiveness of the sealant layer of the overall structure. In some embodiments, the SUP disclosed herein has a two layer sealant system to mitigate this problem.Type: ApplicationFiled: September 14, 2020Publication date: November 2, 2023Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Robert Clare, Ian Gibbons, Daniel Ward, Allister Davey