Patents by Inventor Sepideh Kasiri
Sepideh Kasiri 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).
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
Patent number: 10995166Abstract: 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: November 7, 2017Date of Patent: May 4, 2021Assignee: 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
-
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
-
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
-
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
-
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
-
Publication number: 20190135959Abstract: 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: November 7, 2017Publication date: May 9, 2019Applicant: 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
-
Publication number: 20190135960Abstract: This disclosure relates to an improved solution polymerization process wherein the molecular weight of an ethylene interpolymer product can be increased relative to a comparative process; or at constant ethylene interpolymer molecular weight the improved process can be operated at higher polymerization temperature relative to the comparative process. This disclosure also relates to an improved solution polymerization process wherein an ethylene interpolymer product at target density can be produced at a lower [?-olefin/ethylene] weight ratio in the reactor, relative to a comparative process. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into one or more reactors to form the ethylene interpolymer product. The catalyst is subsequently deactivated, the solution is optionally passivated and following a phase separation process the ethylene interpolymer product is recovered.Type: ApplicationFiled: November 7, 2017Publication date: May 9, 2019Applicant: 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
-
Publication number: 20190135958Abstract: 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: November 7, 2017Publication date: May 9, 2019Applicant: 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