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公开(公告)号：US11945889B2
公开(公告)日：2024-04-02
申请号：US17049627
申请日：2019-06-07
发明人： Bo Liu , Joel D. Wieliczko , John F. Szul , Daudi A. Abe , Roger L. Kuhlman , Ayush A. Bafna , Timothy R. Lynn
CPC分类号： C08F210/16 , B29C48/0018 , B29C48/022 , B29C48/10 , C08J5/18 , B29K2023/08 , B29L2023/001 , C08F2500/04 , C08F2500/05 , C08F2500/12 , C08F2500/18 , C08F2500/26 , C08J2323/08
摘要： A bimodal ethylene-co-1-hexene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A blown film consisting essentially of the bimodal ethylene-co-1-hexene copolymer. A method of synthesizing the bimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the bimodal ethylene-co-1-hexene copolymer.
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公开(公告)号：US11840596B2
公开(公告)日：2023-12-12
申请号：US16972280
申请日：2020-02-20
申请人： LG Chem, Ltd.
发明人： Seungmi Lee , Ki Soo Lee , Hyun Jee Kwon , Poeun Kim , Yongwoo Kwon
IPC分类号： C08F4/6592 , C08F4/653 , C08F210/16 , C08L23/08 , C07F7/00 , C08F4/52 , C08F4/659 , C08F110/02
CPC分类号： C08F4/65925 , C07F7/00 , C08F4/52 , C08F4/65904 , C08F4/65912 , C08F4/65916 , C08F110/02 , C08F2420/07 , C08F2500/08 , C08F2500/12 , C08F2500/18 , C08L23/0815
摘要： A catalyst composition, a method of preparing a polyolefin including the same, and a polyolefin prepared from the same are disclosed herein. In some embodiments, a catalyst composition comprises a first transition metal compound represented by Chemical Formula 1, and a second transition metal compound represented by Chemical Formula 2, wherein a molar ratio of the first transition compound to the second transition metal compound ranges from 1:0.3 to 1:3.5. The catalyst composition is capable of preparing a polyolefin having excellent mechanical stability, while exhibiting excellent process stability and high polymerization activity during the preparation of a polyolefin in a slurry process.
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公开(公告)号：US11834528B2
公开(公告)日：2023-12-05
申请号：US17051983
申请日：2019-12-10
申请人： LG Chem, Ltd.
发明人： Si Jung Lee , Bog Ki Hong , Sunghyun Park , Sun Mi Kim , Yi Young Choi , Cheolhwan Jeong , Jinseok Lee
IPC分类号： C08F110/02 , C08F8/22
CPC分类号： C08F110/02 , C08F8/22 , C08F2500/12 , C08F2500/18 , C08F2810/20
摘要： The polyethylene according to the present disclosure reacts with chlorine to prepare a chlorinated polyethylene having excellent processability during extrusion with a high tensile strength by implementing a molecular structure having a high content of medium molecular weight, and may also prepare a CPE compound including the chlorinated polyethylene.
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公开(公告)号：US11702487B2
公开(公告)日：2023-07-18
申请号：US17049989
申请日：2019-05-07
申请人： BOREALIS AG
IPC分类号： C08F210/16 , C08F4/64 , C08F10/06 , C08F4/642
CPC分类号： C08F10/06 , C08F4/64003 , C08F4/6428 , C08F210/16 , C08F2420/07 , C08F2500/03 , C08F2500/12 , C08F2500/17 , C08F2500/18 , C08L2207/02
摘要： The present invention relates to a process for producing a propylene polymer, such as a propylene homopolymer, a propylene-ethylene random copolymer or a heterophasic propylene copolymer using a specific class of metallocene complexes in combination with a cocatalyst system comprising a boron containing cocatalyst and an aluminoxane cocatalyst, preferably in a multistage polymerization process including a gas phase polymerization step.
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公开(公告)号：US11655316B2
公开(公告)日：2023-05-23
申请号：US17123310
申请日：2020-12-16
发明人： Charles D. Lester , Mark G. Goode , Timothy R. Lynn , Kevin J. Cann , John H. Moorhouse , William Albert Matthews , Kefu Sun , Francois Alexandre
IPC分类号： C08F2/38 , C08F10/02 , C08F210/02 , C08F2/34 , C08F4/69 , C08F210/16 , C08K3/00 , C08K5/01
CPC分类号： C08F210/02 , C08F2/38 , C08F4/69 , C08F210/16 , C08K3/00 , C08K5/01 , C08F2/34 , C08F2500/12 , C08F210/16 , C08F2/38 , C08F210/16 , C08F2/34 , C08F210/16 , C08F4/69 , C08F210/16 , C08F210/14 , C08F2500/12 , C08F2500/18 , C08F2500/24 , C08F2500/07 , C08F210/16 , C08F4/025
摘要： Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.
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公开(公告)号：US20190247818A1
公开(公告)日：2019-08-15
申请号：US16387093
申请日：2019-04-17
发明人： Linfeng Chen
IPC分类号： B01J8/18 , C08F10/06 , C08F110/06 , C08F10/02
CPC分类号： B01J8/1809 , B01J8/1872 , B01J31/0201 , B01J31/0212 , B01J31/0272 , B01J31/128 , B01J31/143 , B01J31/2213 , B01J31/2226 , C08F10/02 , C08F10/06 , C08F110/06 , C08F210/06 , C08F2400/02 , C08F2/40 , C08F2/34 , C08F2/00 , C08F4/6465 , C08F4/6494 , C08F4/651 , C08F2500/12 , C08F2500/18 , C08F2500/24 , C08F210/16
摘要： The present disclosure provides a Ziegler-Natta catalyst composition comprising a procatalyst, a cocatalyst and a mixed external electron donor comprising a first selectivity control agent, a second selectivity control agent, and an activity limiting agent. A polymerization process incorporating the present catalyst composition produces a high-stiffness propylene-based polymer with a melt flow rate greater than about 50 g/10 min. The polymerization process occurs in a single reactor, utilizing standard hydrogen concentration with no visbreaking.
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公开(公告)号：US20190185594A1
公开(公告)日：2019-06-20
申请号：US16228987
申请日：2018-12-21
申请人： NORNER VERDANDI AS
发明人： Tore Dreng , Morten Lundquist , Jarmo Lindroos , Dermot O'Hare , Jean-Charles Buffet , Zoe Turner , Fraser Duncan
CPC分类号： C08F10/02 , B29C48/022 , B29C48/09 , B29K2023/06 , B29K2105/0094 , B29K2995/0063 , B29K2995/0088 , C08F4/65912 , C08F4/65925 , C08F210/16 , F16L9/127 , C08F2/001 , C08F4/65927 , C08F210/08 , C08F2500/04 , C08F2500/05 , C08F2500/07 , C08F2500/12 , C08F2500/17 , C08F2500/18 , C08F2500/24
摘要： The present invention provides a process for the preparation of a multimodal polyethylene, said multimodal polyethylene preferably having a bimodal or trimodal M.W. distribution, comprising: (i) polymerizing ethylene and optionally an α-olefin comonomer in a first polymerization stage to produce a first ethylene polymer; and (ii) polymerizing ethylene and optionally an α-olefin comonomer, in the presence of said first ethylene polymer, in a second polymerization stage, wherein said first and second polymerization stages are carried out in the presence of an unsupported metallocene catalyst, which is a complex of a group 4-10 metal having at least two ligands, wherein at least one of the ligands is persubstituted and comprises a delocalized pi system of electrons, each polymerization stage produces at least 5% wt of said multimodal polyethylene, and said multimodal polyethylene has a multimodal M.W. distribution, a M.W. of at least 50,000 g/mol and a bulk density of at least 250 g/dm3.
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公开(公告)号：US20180355076A1
公开(公告)日：2018-12-13
申请号：US15776859
申请日：2016-11-21
IPC分类号： C08F10/02
CPC分类号： C08F10/02 , C08F110/02 , C08F210/16 , C08F2500/01 , C08F2500/07 , C08F2500/12 , C08F2500/18 , C08F210/08 , C08F210/02 , C08F2/001
摘要： The invention is directed to polyethylene having a density in the range≥940 and ≤960 kg/m3, Melt Flow Rate 190/21.6≥1.5 and ≤4.0 g/10 min at 190 degrees Celsius and MWD≥3 and ≤12. The polyethylene is applied in the production of pipes.
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公开(公告)号：US20180265603A1
公开(公告)日：2018-09-20
申请号：US15918075
申请日：2018-03-12
发明人： Lei Zhang , David Knoeppel
CPC分类号： C08F4/6421 , C08F10/00 , C08F10/02 , C08F110/02 , C08F2410/03 , C08F4/6557 , C08F4/6574 , C08F2500/04 , C08F2500/07 , C08F2500/11 , C08F2500/12 , C08F2500/17 , C08F2500/18 , C08F2500/20 , C08F2500/23 , C08F2500/26
摘要： A process may include contacting ethylene monomer with Ziegler-Natta catalyst to form polyethylene. The Ziegler-Natta catalyst may be formed by contacting an alkyl magnesium compound with an alcohol and a metal reagent to form a blend, and contacting the blend with a first agent to form a solution of reaction product “A”. The solution of reaction product “A” may be contacted with a second agent to form a solid reaction product “B”, and the solid reaction product “B” may be contacted with a third agent to form a solid reaction product “C”. The solid reaction product “C” may be contacted with a fourth agent to form a solid reaction product “D”, and the solid reaction product “D” may be contacted with a fifth agent to form a catalyst component.
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公开(公告)号：US20180230253A1
公开(公告)日：2018-08-16
申请号：US15750391
申请日：2016-07-14
发明人： GIUSEPPINA MARIA ALGOZZINI , DIEGO BRITA , MASSIMO CENCI , GIANNI COLLINA , TIZIANO DALL'OCCO , MARIA DI DIEGO , BENEDETTA GADDI , OFELIA FUSCO , GIAMPIERO MORINI , LORELLA PEDRIALI
IPC分类号： C08F110/06 , C08F110/02 , C08F2/34 , C08F4/649 , C08F4/651
CPC分类号： C08F110/06 , C08F2/34 , C08F4/6492 , C08F4/651 , C08F10/06 , C08F110/02 , C08F2500/12 , C08F2500/15 , C08F2500/18 , C08F4/6543
摘要： A Prepolymerized catalyst component for the polymerization of olefins comprising a solid catalyst component which comprises Mg, Ti, and chlorine atoms and an electron donor (ID) said prepolymerized catalyst component being characterized by the fact that: the electron donor (ID) is constituted by at least 80% mol of 1,3 diethers with respect to the total molar amount of electron donor compounds; the prepolymerized catalyst has a porosity due to pores with diameters up to 1 μm of less than 0.2 cm3/g; it contains an amount of ethylene prepolymer of less than 45% with respect to the total weight of prepolymerized catalyst.
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