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公开(公告)号：US20210221929A1
公开(公告)日：2021-07-22
申请号：US17219622
申请日：2021-03-31
发明人： Niousha Kazemi , Monika Kleczek , Vinod Konaganti , Bronwyn Gillon , Shivendra Goyal , Fazle Sibtain , Sepideh Kasiri , Stephen Salomons , Kenneth Taylor , Mehdi Keshtkar
IPC分类号： C08F210/16 , C08J5/18 , C08L23/08 , B32B27/32
摘要： 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%.
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公开(公告)号：US11046843B2
公开(公告)日：2021-06-29
申请号：US16524600
申请日：2019-07-29
发明人： Vinod Konaganti , Sepideh Kasiri , Shivendra Goyal , Monika Kleczek , Fazle Sibtain , Marzieh Ebrahimi
IPC分类号： C08L23/00 , C08L23/16 , C08L23/08 , C08F4/02 , C08F4/6592 , C08F210/14 , C08F210/16 , C08F4/659 , C08F2/00
摘要： 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.
Blown film made from the ethylene copolymer composition has a hot tack window (HTW) of at least 45° C. (at a film thickness of about 2 mil) and a seal initiation temperature (SIT) of less than 95° C. (at a film thickness of about 2 mil).-
公开(公告)号：US11312845B2
公开(公告)日：2022-04-26
申请号：US16826689
申请日：2020-03-23
发明人： Soheil Sadeghi , Fazle Sibtain , Zengrong Zhang , Niousha Kazemi , Monika Kleczek , Vinod Konaganti , Bronwyn Gillon , Shivendra Goyal , Sepideh Kasiri , Stephen Salomons , Kenneth Taylor , Mehdi Keshtkar
IPC分类号： C08L23/08 , C08F210/16 , C08F4/6592 , C08J5/18 , B32B27/32 , B32B27/34 , B32B27/08
摘要： This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δint., greater than or equal to 0.01, satisfying 0.01×(Z−50)0.78≤Δint.≤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%.
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公开(公告)号：US10683376B2
公开(公告)日：2020-06-16
申请号：US15805287
申请日：2017-11-07
发明人： Niousha Kazemi , Monika Kleczek , Vinod Konaganti , Bronwyn Gillon , Shivendra Kumar Goyal , Fazle Sibtain , Sepideh Kasiri , Stephen Salomons , Kenneth Edward Taylor , Mehdi Keshtkar
IPC分类号： C08F4/6592 , C08F210/16 , C08J5/18 , B32B27/08 , B32B27/32 , C08F4/659
摘要： 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.
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公开(公告)号：US20190135959A1
公开(公告)日：2019-05-09
申请号：US15805287
申请日：2017-11-07
发明人： Niousha Kazemi , Monika Kleczek , Vinod Konaganti , Bronwyn Gillon , Shivendra Kumar Goyal , Fazle Sibtain , Sepideh Kasiri , Stephen Salomons , Kenneth Edward Taylor , Mehdi Keshtkar
IPC分类号： C08F210/16 , C08J5/18
摘要： 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.
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公开(公告)号：US20230295355A1
公开(公告)日：2023-09-21
申请号：US18041051
申请日：2021-10-06
IPC分类号： C08F210/16 , C08F4/659
CPC分类号： C08F210/16 , C08F4/65908 , C08F4/65912
摘要： 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 η0 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.
G
N
0
Formula
(
I
)
τ
n
=
η
0
G
N
0
.
Formula
(
II
)-
公开(公告)号：US11584845B2
公开(公告)日：2023-02-21
申请号：US17701385
申请日：2022-03-22
发明人： Soheil Sadeghi , Fazle Sibtain , Zengrong Zhang , Niousha Kazemi , Monika Kleczek , Vinod Konaganti , Bronwyn Gillon , Shivendra Goyal , Sepideh Kasiri , Stephen Salomons , Kenneth Taylor , Mehdi Keshtkar
IPC分类号： C08L23/08 , C08F210/16 , B32B27/32 , C08J5/18 , B32B27/34 , B32B27/08 , C08F4/6592
摘要： This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δint., greater than or equal to 0.01, satisfying 0.01×(Z−50)0.78≤Δint.≤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%.
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公开(公告)号：US20190135958A1
公开(公告)日：2019-05-09
申请号：US15805268
申请日：2017-11-07
发明人： Niousha Kazemi , Monika Kleczek , Vinod Konaganti , Bronwyn Gillon , Shivendra Kumar Goyal , Fazle Sibtain , Sepideh Kasiri , Stephen Salomons , Kenneth Edward Taylor , Mehdi Keshtkar
IPC分类号： C08F210/16 , C08J5/18 , C08L23/08 , B32B27/32
摘要： 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%.
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公开(公告)号：US20240301184A1
公开(公告)日：2024-09-12
申请号：US18550421
申请日：2022-03-16
发明人： Maryam Fereydoon , Shivendra Goyal , Sepideh Kasiri , Owen Lightbody , Norman Aubee , Bronwyn Gillon
CPC分类号： C08L23/0815 , B29C55/12 , B29K2023/08 , B29K2995/0088 , C08L2203/16 , C08L2205/025 , C08L2207/07 , C08L2314/02 , C08L2314/06
摘要： A polyethylene composition has a density of from 0.941 to 0.962 g/cm3; a melt index, I2 of from 0.5 to 5.0 g/10 min; a melt flow ratio, I21/I2 of ≥40; a Z-average molecular weight distribution, Mz/Mw of ≥2.5; a comonomer distribution breadth index, CDBI50 of >50 wt %; and a long chain branching factor, LCBF of >0.0010. In a temperature rising elution fractionation (CTREF) analysis, the polyethylene composition has greater than 70 weight percent of material eluting at a temperature of greater than 90° C.
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公开(公告)号：US20240174778A1
公开(公告)日：2024-05-30
申请号：US18550477
申请日：2022-03-16
发明人： Céline Bellehumeur , Sepideh Kasiri
IPC分类号： C08F210/02
CPC分类号： C08F210/02 , C08F2410/05
摘要： A polyethylene composition has a density of ≥0.945 g/cm3, a melt index. I2 of from 0.8 to 4.0 g/10 min. an environmental stress crack resistance, an ESCR of greater than 400 hours as determined by ASTM D1693 in 100% IGEPAL CO-630 under conditions A or B. and a melt strength of ≥3.0 cN.
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