Patents by Inventor Shivendra Goyal
Shivendra Goyal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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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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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: 11773197Abstract: 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: May 5, 2020Date of Patent: October 3, 2023Assignee: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Niousha Kazemi, Monika Kleczek, Vinod Konaganti, Bronwyn Gillon, Shivendra Goyal, Fazle Sibtain, Sepideh Kasiri, Stephen Salomons, Kenneth Taylor, Mehdi Keshtkar
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Publication number: 20230295355Abstract: An ethylene interpolymer product comprises a first component with an undetectable level of long-chain branches and a second component with a detectable level of long-chain branches wherein said first component has a weight-average molecular weight higher than said second component. The ethylene interpolymer product is characterized as having (a) an Arrhenius type flow activation energy Ea greater than or equal to 33 kJ/mol and less than or equal to 45 kJ/mol; and (b) a number-average relaxation time tn measured at 190° C. greater than or equal to 2 ms and less than or equal to 15 ms, wherein said number-average relaxation time is calculated using zero-shear viscosity ?0 at 190° C. in kPa·s and plateau modulus Formula (I) at 190° C. in MPa, according to Formula (II). Film made from the ethylene interpolymer product may be characterized by a hot-tack peak strength from about 12 N to about 20 N and a lubricated puncture resistance from about 100 J/mm to about 150 J/mm.Type: ApplicationFiled: October 6, 2021Publication date: September 21, 2023Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Vinod Konaganti, Shivendra Goyal, Sepideh Kasiri, Bronwyn Gillon
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Publication number: 20230235106Abstract: An ethylene copolymer comprising ethylene and at least one alpha olefin having from 4 to 8 carbon atoms has a density f from 0.940 to 0.960 g/cm3, a molecular weight distribution, Mw/Mn of from 9 to 12, and a Z-average molecular weight, Mz of greater than 500,000. The ethylene copolymer is made in a multi-zone reactor system under solution phase polymerization conditions and is useful in the preparation of biaxially oriented polyethylene (BOPE) films.Type: ApplicationFiled: June 23, 2021Publication date: July 27, 2023Applicant: NOVA Chemicals (International) S.A.Inventors: Maryam Fereydoon, Shivendra Goyal, Stephen Brown, Owen Lightbody, Norman Aubee, Bronwyn Gillon, Thomas Green, Lison Mark, Christian Carello
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Patent number: 11708437Abstract: This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless Long Chain Branching Factor, LCBF, greater than or equal to 0.001; a residual catalytic metal of from ?0.03 to ?5 ppm of hafnium, and; a dimensionless unsaturation ratio, UR, of from ??0.40 to ?0.06, wherein UR is defined by the following relationship; UR=(SCU?TU)/TU, where SCU is the amount of a side chain unsaturation per 100 carbons and TU is amount of a terminal unsaturation per 100 carbons, in said ethylene interpolymer product. 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 (Mw/Mn) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.Type: GrantFiled: March 31, 2021Date of Patent: July 25, 2023Assignee: NOVA Chemicals (International) S.A.Inventors: Niousha Kazemi, Monika Kleczek, Vinod Konaganti, Bronwyn Gillon, Shivendra Goyal, Fazle Sibtain, Sepideh Kasiri, Stephen Salomons, Kenneth Taylor, Mehdi Keshtkar
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Patent number: 11584845Abstract: 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 22, 2022Date of Patent: February 21, 2023Assignee: 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: 20230002596Abstract: 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: August 25, 2022Publication date: January 5, 2023Applicant: NOVA Chemicals (International) S.A.Inventors: Zengrong Zhang, Fazle Sibtain, Niousha Kazemi, Kenneth Taylor, Shivendra Goyal
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Publication number: 20220402192Abstract: A Biaxially Oriented Polyethylene (BOPE) process uses a selected polyethylene having a medium density and a very broad molecular weight distribution. The use of this selected polyethylene facilitates stretching in the BOPE process in comparison to previously used polyethylene resins having a higher density and/or a narrower molecular weight distribution.Type: ApplicationFiled: October 19, 2020Publication date: December 22, 2022Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Norman AUBEE, Owen LIGHTBODY, Maryam FEREYDOON, Bronwyn GILLON, Patrick LAM, Shivendra GOYAL
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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: 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: 20220024190Abstract: Multilayer films are prepared from an ethylene interpolymer product having a density of from 0.905 to 0.914 g/cc and a melt index, I2, of from 2.5 to 4.5 g/10 minutes, wherein the ethylene interpolymer product comprises: (i) a first ethylene interpolymer; (ii) a second ethylene interpolymer, and; (iii) optionally a third ethylene interpolymer; and wherein the ethylene interpolymer product has a Dilution Index, Yd, of greater than 0 degrees. In an embodiment, the first ethylene interpolymer is made with a single site catalyst and the second ethylene interpolymer is made with a heterogeneous Ziegler Natta catalyst.Type: ApplicationFiled: December 9, 2019Publication date: January 27, 2022Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Maryam Fereydoon, Stephen Salomons, Norman Aubee, Shivendra Goyal, Patrick Lam
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Publication number: 20210221929Abstract: This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless Long Chain Branching Factor, LCBF, greater than or equal to 0.001; a residual catalytic metal of from ?0.03 to ?5 ppm of hafnium, and; a dimensionless unsaturation ratio, UR, of from ??0.40 to ?0.06, wherein UR is defined by the following relationship; UR=(SCU?TU)/TU, where SCU is the amount of a side chain unsaturation per 100 carbons and TU is amount of a terminal unsaturation per 100 carbons, in said ethylene interpolymer product. 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 (Mw/Mn) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.Type: ApplicationFiled: March 31, 2021Publication date: July 22, 2021Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Niousha Kazemi, Monika Kleczek, Vinod Konaganti, Bronwyn Gillon, Shivendra Goyal, Fazle Sibtain, Sepideh Kasiri, Stephen Salomons, Kenneth Taylor, Mehdi Keshtkar
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Patent number: 11053332Abstract: Embodiments of the invention described herein relate to a polyethylene polymer composition suitable for use in the manufacture of packaging articles, flexible films and/or sheets. In one embodiment, the copolymer comprises a polyethylene resin with density 0.918 g/cm3 to about 0.935 g/cm3, G? at G?(500 Pa) value, as determined from Dynamic Mechanical Analysis at 190° C., of less than 40 Pa, Mz/Mw of greater than 2, CDBI50 of greater than 60. Other embodiments relate to polymer compositions with defined molecular characteristics and formulations suitable for use in the manufacture of articles including films, sheets, bags and pouches with improved creep resistance and high toughness and a good balance of film stiffness and processability in monolayer and/or multi-layer film structures.Type: GrantFiled: February 1, 2019Date of Patent: July 6, 2021Assignee: NOVA Chemicals (International) S.A.Inventors: Shivendra Goyal, Bronwyn Gillon, Stephen Salomons
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Patent number: 11046843Abstract: An ethylene copolymer composition comprises: a first ethylene copolymer having a density of from 0.855 to 0.913 g/cm3, a molecular weight distribution, Mw/Mn of from 1.7 to 2.3, and a melt index, I2 of from 0.1 to 20 g/10 min; a second ethylene copolymer having a density of from 0.875 to 0.936 g/cm3, a molecular weight distribution, Mw/Mn of from 2.3 to 6.0, and a melt index, I2 of from 0.3 to 100 g/10 min; and optionally a third ethylene copolymer; where the first ethylene copolymer has more short chain branches per thousand carbon atoms than the second ethylene copolymer and the density of the second ethylene copolymer is equal to or higher than the density of the first ethylene copolymer. The ethylene copolymer composition has a density of from 0.865 to 0.913 g/cm3; a melt index, I2 of from 0.5 to 10 g/10 min; and a fraction eluting at from 90 to 105° C., having an integrated area of greater than 4 weight percent in a CTREF analysis; and at least 0.0015 parts per million (ppm) of hafnium.Type: GrantFiled: July 29, 2019Date of Patent: June 29, 2021Assignee: NOVA Chemicals (International) S.A.Inventors: Vinod Konaganti, Sepideh Kasiri, Shivendra Goyal, Monika Kleczek, Fazle Sibtain, Marzieh Ebrahimi
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Patent number: 10954365Abstract: This disclosure relates to ethylene interpolymer compositions. Specifically, ethylene interpolymer products having: a Dilution Index (Yd) greater than 0; total catalytic metal ?3.0 ppm; ?0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (Xd) greater than 0. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.869 to about 0.975 g/cm3, a polydispersity (Mw/Mn) from about 2 to about 25 and a CDBI50 from about 20% to about 97%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation.Type: GrantFiled: April 16, 2019Date of Patent: March 23, 2021Assignee: NOVA Chemicals (International) S.A.Inventors: Brian Molloy, Shivendra Goyal, Stephen Salomons, Fazle Sibtain
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Publication number: 20210032450Abstract: An ethylene copolymer composition comprises: a first ethylene copolymer having a density of from 0.855 to 0.913 g/cm3, a molecular weight distribution, Mw/Mn of from 1.7 to 2.3, and a melt index, 12 of from 0.1 to 20 g/10 min; a second ethylene copolymer having a density of from 0.875 to 0.936 g/cm3, a molecular weight distribution, Mw/Mn of from 2.3 to 6.0, and a melt index, 12 of from 0.3 to 100 g/10 min; and optionally a third ethylene copolymer; where the first ethylene copolymer has more short chain branches per thousand carbon atoms than the second ethylene copolymer and the density of the second ethylene copolymer is equal to or higher than the density of the first ethylene copolymer. The ethylene copolymer composition has a density of from 0.865 to 0.913 g/cm3; a melt index, 12 of from 0.5 to 10 g/10 min; and a fraction eluting at from 90 to 105° C., having an integrated area of greater than 4 weight percent in a CTREF analysis; and at least 0.0015 parts per million (ppm) of hafnium.Type: ApplicationFiled: July 29, 2019Publication date: February 4, 2021Applicant: NOVA Chemicals (International) S.A.Inventors: Vinod Konaganti, Sepideh Kasiri, Shivendra Goyal, Monika Kleczek, Fazle Sibtain, Marzieh Ebrahimi
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Publication number: 20210024726Abstract: 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: October 13, 2020Publication date: January 28, 2021Applicant: NOVA Chemicals (International) S.A.Inventors: Zengrong Zhang, Fazle Sibtain, Niousha Kazemi, Kenneth Taylor, Shivendra Goyal
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Patent number: 10882987Abstract: 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: GrantFiled: January 9, 2019Date of Patent: January 5, 2021Assignee: NOVA Chemicals (International) S.A.Inventors: Zengrong Zhang, Fazle Sibtain, Niousha Kazemi, Kenneth Taylor, Shivendra Goyal
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Publication number: 20200325258Abstract: 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: ApplicationFiled: May 5, 2020Publication date: October 15, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Niousha Kazemi, Monika Kleczek, Vinod Konaganti, Bronwyn Gillon, Shivendra Goyal, Fazle Sibtain, Sepideh Kasiri, Stephen Salomons, Kenneth Taylor, Mehdi Keshtkar