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公开(公告)号：US12104284B2
公开(公告)日：2024-10-01
申请号：US17293202
申请日：2019-11-20
Applicant: DOW GLOBAL TECHNOLOGIES LLC
Inventor： Yinglong Chen , Akanksha Garg , Yijian Lin , Sanjib Biswas , Jeffrey D. Weinhold , Pavan Kumar Valavala , Fabricio Arteaga Larios , Jill Martin , Didem Oner-Deliormanli , Mehmet Demirors
IPC: D01D5/32 , C08F10/06 , C08F210/16 , D01D5/22 , D01F8/06
CPC classification number: D01D5/32 , C08F10/06 , C08F210/16 , D01D5/22 , D01F8/06 , C08F2500/05 , C08F2500/12 , C08F210/16 , C08F4/64193 , C08F210/16 , C08F2/001 , C08F210/16 , C08F210/14 , C08F2500/05 , C08F2500/10 , C08F2500/12
Abstract: Disclosed is a curly fiber having a fiber centroid and comprising a first region having a first centroid and a second region wherein the first region comprises an ethylene/alpha olefin interpolymer composition in an amount of at least 75 weight percent based on total weight of the first region and wherein the ethylene/alpha olefin interpolymer composition is characterized by a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure, and a full width at half maximum of the high temperature peak is less than 6.0° C. and the second region is a material comprising a polymer which is different from the ethylene/alpha-olefin interpolymer of the first region and wherein the regions are arranged such that at least one of the first centroid and the second centroid is not the same as the fiber centroid.
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公开(公告)号：US11891463B2
公开(公告)日：2024-02-06
申请号：US17254987
申请日：2019-06-26
Applicant: Dow Global Technologies LLC
Inventor： John O. Osby , Hayley A. Brown , Mehmet Demirors , Carmelo Declet Perez
IPC: C08F210/02 , C08F236/20 , C08L23/08 , C08F220/40 , C08F2/38 , C08F210/06
CPC classification number: C08F210/02 , C08F2/38 , C08F210/06 , C08F236/20 , C08L23/0869 , C08F220/40 , C08L2201/08 , C08L2203/16 , C08L2203/30 , C08L2207/066
Abstract: An ethylene-based polymer formed from reacting at least the following: ethylene and at least one asymmetrical polyene, of Structure 1, as described herein.
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公开(公告)号：US11649306B2
公开(公告)日：2023-05-16
申请号：US17371728
申请日：2021-07-09
Applicant: Dow Global Technologies LLC
Inventor： Linfeng Chen , Mehmet Demirors
IPC: C08F210/16 , C08F10/00
CPC classification number: C08F210/16 , C08F10/00 , C08F2410/04 , C08F210/16 , C08F4/6545 , C08F210/16 , C08F4/64193 , C08F210/16 , C08F210/14 , C08F2500/05
Abstract: A modified Ziegler-Natta procatalyst that is a product mixture of modifying an initial Ziegler-Natta procatalyst with a molecular (pro)catalyst, and optionally an activator, the modifying occurring before activating the modified Ziegler-Natta procatalyst with an activator and before contacting the modified Ziegler-Natta procatalyst with a polymerizable olefin. Also, a modified catalyst system prepared therefrom, methods of preparing the modified Ziegler-Natta procatalyst and the modified catalyst system, a method of polymerizing an olefin using the modified catalyst system, and a polyolefin product made thereby.
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4.发明授权公开(公告)号：US11261544B2
公开(公告)日：2022-03-01
申请号：US16486521
申请日：2018-03-07
Applicant: Dow Global Technologies LLC
Inventor： Viraj Shah , Yijian Lin , Ronald Wevers , Rongjuan Cong , Mehmet Demirors
IPC: D01F6/30 , D04H1/56 , C08F210/16 , D01D5/34 , D01F8/06 , D04H1/4291 , D04H3/007 , D04H3/16
Abstract: An ethylene/alpha-olefin interpolymer suitable for use in fibers and nonwovens having a density of from 0.911 to 0.939 g/cc, a Brookfield viscosity of less than or equal to 50,000 cP, and a molecular weight distribution (Mw,cc/Mn,cc) of 1.8 to 3.5, and articles thereof.
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公开(公告)号：US11242422B2
公开(公告)日：2022-02-08
申请号：US16689657
申请日：2019-11-20
Applicant: Dow Global Technologies LLC
Inventor： Philip P. Fontaine , Jerzy Klosin , Endre Szuromi , Carl N. Iverson , Zach T. Rickaway , Andrew J. Young , Susan G. Brown , Ruth Figueroa , Mehmet Demirors , Mridula Kapur
Abstract: The invention provides a process to form an olefin-based polymer, said process comprising polymerizing at least one olefin in the presence of at least one catalyst system comprising the reaction product of the following: A) at least one cocatalyst; and B) a procatalyst comprising a metal-ligand complex of Formula (I), as described herein:
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Patent Agency Ranking
公开(公告)号：US20220010038A1
公开(公告)日：2022-01-13
申请号：US17482719
申请日：2021-09-23
Applicant: Dow Global Technologies LLC
Inventor： Linfeng Chen , Marc A. Springs , Mehmet Demirors
IPC: C08F4/654 , C08F10/02 , C08F4/642 , C08F4/659 , C08F210/16
Abstract: A magnesium halide-supported titanium procatalyst, a catalyst prepared therefrom, an enhanced catalyst consists essentially of a product of a reaction of the magnesium halide-supported titanium procatalyst and a hydrocarbylaluminoxane. Also methods of preparing the (pro)catalysts, a method of polymerizing an olefin, and a polyolefin made by the polymerization method.
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公开(公告)号：US20220008893A1
公开(公告)日：2022-01-13
申请号：US17295264
申请日：2019-11-22
Applicant: Dow Global Technologies LLC
Inventor： Andrew T. Heitsch , Yijian Lin , Barbara Bonavoglia , Kyle E. Hart , Mehmet Demirors , Rou Hua Chou , Manoj Thota
Abstract: A film includes 20.0 weight percent to 69.5 weight percent of a linear low density polyethylene (LLDPE) based polymer. The LLDPE having a high density fraction (HDF) from 3.0% to 8.0%, an I10/I2 ratio from 5.5 to 6.9, and a short chain branching distribution (SCBD) of less than or equal to 8.0° C. The film also includes 0.0 weight percent to 10.0 weight percent low density polyethylene (LDPE) based polymer, and 30.0 weight percent to 70.0 weight percent pore former.
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公开(公告)号：US11193009B2
公开(公告)日：2021-12-07
申请号：US16639620
申请日：2018-09-14
Applicant: Dow Global Technologies LLC , PBBPolisur S.R.L.
Inventor： Surya Ssubramaniam , Mehmet Demirors , Teresa P. Karjala , Jorge C. Gomes , Guillermo A. Raimondi , Davidson Lütkenhaus , Marie De Luján Tricotti
Abstract: Provided is a method for increasing the melt strength and/or low shear viscosity of a polyethylene resin. The method includes: a) providing a polyethylene composition including the reaction product of ethylene and optionally, one or more alpha-olefin comonomers, wherein the polyethylene composition is characterized by the following properties: a density ranging from 0.900 g/cm3 to 0.970 g/cm3, a molecular weight distribution (Mw/Mn) ranging from 2.6 to 3.5, and from 0.10 to 0.27 vinyl groups per 1,000 total carbon atoms; b) providing a masterbatch composition including a free radical generator and a polyethylene resin, wherein the free radical generator has a half-life at 220° C. of less than 200 seconds, and a decomposition energy higher than −250 kJ/mol, and wherein the polyethylene resin has a density ranging from 0.900 g/cm3 to 0.970 g/cm3, melt index ranging from 0.01 g/10 min to 100 g/10 min; and c) reacting the polyethylene composition with the masterbatch composition to form a modified polyethylene composition.
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公开(公告)号：US20210261702A1
公开(公告)日：2021-08-26
申请号：US17254987
申请日：2019-06-26
Applicant: Dow Global Technologies LLC
Inventor： John O. Osby , Hayley A. Brown , Mehmet Demirors , Carmelo Declet Perez
IPC: C08F210/02 , C08F210/06 , C08F236/20 , C08F2/38 , C08L23/08
Abstract: An ethylene-based polymer formed from reacting at least the following: ethylene and at least one asymmetrical polyene, of Structure 1, as described herein.
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公开(公告)号：US20210253757A1
公开(公告)日：2021-08-19
申请号：US16973626
申请日：2019-06-13
Applicant: Dow Global Technologies LLC
Inventor： Timothy W. Gambel , Curvel Hypolite , Daniel S. Rynearson , Michael J. Zogg, Jr. , Kyle E. Hart , Michael D. Turner , Jorge Rubalcaba , Pradeep Jain , Mehmet Demirors
Abstract: A method of producing bimodal ethylene-based polymer includes reacting ethylene monomer and C3-C12 α-olefin comonomer in the presence of a first catalyst in an agitated reactor to produce a first polymer fraction, and outputting effluent from the agitated reactor. A second catalyst is added to the effluent downstream of the agitated reactor and upstream from a non-agitated reactor, the second catalyst facilitates production of a second polymer fraction having a density and melt index (I2) different from the first polymer fraction. The second catalyst and effluent are mixed in at least one mixer. The second catalyst, second polymer fraction, and the first polymer fraction are passed to the non-agitated reactor; and additional ethylene monomer, additional C3-C12 α-olefin comonomer, and solvent are passed to the non-agitated reactor to produce more second polymer fraction and thereby the bimodal ethylene-based polymer.
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