Patents Examined by Rip Lee
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Patent number: 11897975Abstract: The present invention relates to a multi-stage process for producing a C2 to C8 olefin polymer composition in a process comprising at least two reactors, wherein a pre-polymerized solid Ziegler-Natta catalyst is prepared by carrying out an off-line pre-polymerization of a solid Ziegler-Natta catalyst component with a C2 to C4 olefin monomer before feeding to the polymerization process.Type: GrantFiled: September 19, 2019Date of Patent: February 13, 2024Assignee: BOREALIS AGInventors: Klaus Nyfors, Vasileios Kanellopoulos, Erno Elovainio, Ravindra Tupe, Victor Sumerin
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Patent number: 11879026Abstract: The invention relates to a polypropylene composition comprising a terpolymer containing propylene, ethylene and 1-hexene wherein the polypropylene composition (i) has a content of ethylene derived units of at least 1.5 wt %; (ii) has a content of 1-hexene derived units of at least 1.5 wt %; (iii) has a melt flow rate of 0.10 to 0.70 g/10 min determined by ISO 1133-1:2011 (230° C., 2.16 kg); and (iv) has a ratio of weight average molecular weight (Mw) to numeric average molecular (Mn) weight of the terpolymer of 7.0 to 20.0, wherein Mw and Mn are measured according to ASTM D6474-12.Type: GrantFiled: July 22, 2019Date of Patent: January 23, 2024Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Henrica Norberta Alberta Maria Steenbakkers-Menting, Patrick Elisabeth Luc Voets, Desiree Marie Louise Seegers, Erik Delsman, Ibrahim Mohammad Alsugai, Musaad Al-Sadhan, Martin Alexander Zuideveld, Akhlaq Moman
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Patent number: 11881335Abstract: The invention relates to a semiconductive polymer composition comprising a polymer component, a conducting component and a crosslinking agent, wherein the polymer component comprises a polar polyethylene and the crosslinking agent comprises an aliphatic mono- or bifunctional peroxide or, alternatively, a monofunctional peroxide containing an aromatic group, and the crosslinking agent is present in an amount which is Z wt %, based on the total amount (100 wt %) of the polymer composition, and Z1?Z?Z2, wherein Z1 is 0.01 and Z2 is 5.0, an article being e.g. a cable, e.g. a power cable, and processes for producing a semiconductive polymer composition and an article; useful in different end applications, such as wire and cable (W&C) applications.Type: GrantFiled: December 18, 2018Date of Patent: January 23, 2024Assignee: BOREALIS AGInventors: Fredrik Skogman, Emil Hjärtfors, Annika Smedberg, Daniel Nilsson
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Patent number: 11879057Abstract: The invention relates to a process for producing a polypropylene composition by sequential polymerization, said polypropylene composition having low sealing initiation temperature (SIT) and high melting point (Tm), thus providing abroad sealing window.Type: GrantFiled: September 6, 2018Date of Patent: January 23, 2024Assignee: BOREALIS AGInventors: Pauli Leskinen, Luca Boragno
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Patent number: 11873393Abstract: A bimodal ethylene-based polymer, including a high density fraction (HDF) from 3.0% to 25.0%, wherein the high density fraction is measured by crystallization elution fractionation (CEF) integration at temperatures from 93° C. to 119° C., an I10/I2 ratio from 5.5 to 7.5, wherein I2 is the melt index when measured according to ASTM D 1238 at a load of 2.16 kg and temperature of 190° C. and I10 is the melt index when measured according to ASTM D 1238 at a load of 10 kg and temperature of 190° C., and a short chain branching distribution (SCBD) less than or equal to 10° C., wherein the short chain branching distribution is measured by CEF full width at half height.Type: GrantFiled: June 13, 2019Date of Patent: January 16, 2024Assignee: Dow Global Technologies LLCInventors: Kyle E. Hart, Mehmet Demirors, Timothy W. Gambrel, Philip P. Fontaine, Pradeep Jain
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Patent number: 11873377Abstract: A blown film having a bimodal ethylene-based polymer including a high density fraction (HDF) from 3.0% to 25.0%, an I10/I2 ratio from 5.5 to 7.5, a short chain branching distribution (SCBD) less than or equal to 10 C, a zero shear viscosity ratio from 1.0 to 2.5, a density from 0.902 g/cc to 0.925 g/cc, and a melt index (I2) from 0.5 g/10 mins to 2.0 g/10 mins.Type: GrantFiled: June 13, 2019Date of Patent: January 16, 2024Assignee: Dow Global Technologies LLCInventors: Kyle E. Hart, Mehmet Demirors, Timothy W. Gambrel, Philip P. Fontaine, Vivek Kalihari, Francis O. Olajide, Jr., Rajen M. Patel
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Patent number: 11873355Abstract: Propylene-ethylene copolymer compositions and production methods are provided. The copolymer compositions can be particularly advantageous for use in hot fill packaging of foodstuffs. The propylene-ethylene copolymers can be produced using a Ziegler-Natta catalyst and an alkoxysilane electron donor. The compositions can have propylene as a primary monomer with an ethylene content ranging from 2.0 to 6.0 percent by weight with a xylene soluble content of less than 7.0 percent by weight.Type: GrantFiled: June 7, 2019Date of Patent: January 16, 2024Assignee: W.R. Grace & Co.-Conn.Inventors: Matthew John Fedec, Jan Willem Van Egmond, Manu Rego, John Kalevi Kaarto, Li-Min Tau
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Patent number: 11859041Abstract: This disclosure provides new methods for the design and development of ethylene polymerization catalysts, including Group 4 metallocene catalysts such as zirconocenes, which are based on an improved ability to adjust co-monomer incorporation into the polymer. Computational analyses with and without dispersion corrections revealed that designing catalyst scaffolds which induce stabilizing non-covalent dispersion type interactions with incoming ?-olefin co-monomers can be used to modulate co-monomer selectivity into the polyethylene chain. Demonstrated herein is a lack of correlation of computed ??G‡ values against experimental ??G‡ values when the dispersion correction (D3BJ) was disabled, and B3LYP was used in the absence of Grimme's D3 dispersion and Becke-Johnson (BJ) dampening, but a correlation of computed against experimental ??G‡ with B3LYP+D3BJ, which are used to design new catalyst scaffolds.Type: GrantFiled: August 16, 2021Date of Patent: January 2, 2024Assignee: Chevron Phillips Chemical Company LPInventors: Steven M. Bischof, Qing Yang, Orson L. Sydora, Graham R. Lief, Richard M Buck, Daniel H. Ess, Steven M. Maley
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Patent number: 11859030Abstract: The present invention relates to a process for producing a heterophasic propylene copolymer (RAHECO) having a xylene cold soluble fraction (XCS) determined according to ISO 16152 (25° C.) of more than 30 wt.-%, a heterophasic propylene copolymer (RAHECO) produced by the process as well as an article, preferably a film, a flexible tube or cable insulation, comprising the heterophasic propylene copolymer (RAHECO).Type: GrantFiled: September 24, 2019Date of Patent: January 2, 2024Assignee: BOREALIS AGInventors: Pauli Leskinen, Jingbo Wang, Markus Gahleitner
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Patent number: 11859025Abstract: Disclosed herein are oligomerization processes in which ethylene and a catalyst system are first combined for a suitable residence time in an activation vessel, prior to introduction into a reaction zone to oligomerize ethylene to form a desired oligomer product, such as 1-hexene and/or 1-octene. Related oligomerization reaction systems that include the activation vessel also are disclosed. In these oligomerization processes and reaction systems, the catalyst system can be fully activated as it leaves the activation vessel and enters the reaction zone, thus providing greater catalyst utilization and less catalyst waste.Type: GrantFiled: September 7, 2021Date of Patent: January 2, 2024Assignee: Chevron Phillips Chemical Company LPInventors: Steven M. Bischof, James L. Hillier, Uriah J. Kilgore, Steve R. Hutchison, Bruce E. Kreischer, Orson L. Sydora
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Patent number: 11859024Abstract: Ethylene-based polymers are characterized by a melt index less than 1 g/10 min, a density from 0.94 to 0.965 g/cm3, a Mw from 100,000 to 250,000 g/mol, a relaxation time from 0.5 to 3 sec, and an average number of long chain branches (LCBs) per 1,000,000 total carbon atoms in a molecular weight range of 300,000 to 900,000 g/mol that is greater than that in a molecular weight range of 1,000,000 to 2,000,000 g/mol, or an average number of LCBs per 1,000,000 total carbon atoms in a molecular weight range of 1,000,000 to 2,000,000 g/mol of less than or equal to about 5 and a maximum ratio of ?E/3? at an extensional rate of 0.1 sec?1 from 1.2 to 10. These polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in a lower molecular weight fraction, such that polymer melt strength and parison stability are maintained for the fabrication of blow molded products and other articles of manufacture.Type: GrantFiled: January 10, 2022Date of Patent: January 2, 2024Assignee: Chevron Phillips Chemical Company LPInventors: Jeremy M. Praetorius, Alfred E. Brown, Jr., Yongwoo Inn, Youlu Yu, Qing Yang, Ashish M. Sukhadia
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Patent number: 11857935Abstract: A heterogeneous procatalyst includes a titanium species, a magnesium chloride component, and a chlorinating agent having a structure A(Cl)x(R1)3-x, where A is aluminum or boron, R1 is a (C1-C30) hydrocarbyl, and x is 1, 2, or 3. The magnesium chloride component may be thermally treated at a temperature greater than 100 C for at least 30 minutes before or after introduction of the chlorinating agent and titanium species to the heterogeneous procatalyst. The heterogeneous procatalyst having the thermally treated magnesium chloride exhibits improved average molecular weight capability. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.Type: GrantFiled: May 23, 2019Date of Patent: January 2, 2024Assignee: Dow Global Technologies LLCInventors: Mingzhe Yu, David Gordon Barton, Kurt F. Hirsekorn, Sadeka Onam, Peter N. Nickias, Andrew T. Heitsch, Thomas H. Peterson
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Patent number: 11859031Abstract: A compound of formula (1) as drawn herein, wherein M is a Group 4 metal and each R independently is a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.Type: GrantFiled: October 11, 2019Date of Patent: January 2, 2024Assignee: Dow Global Technologies LLCInventors: Bethany M. Neilson, Roger L Kuhlman, Ian M. Munro, John F. Szul
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Patent number: 11851518Abstract: The present disclosure provides for a separations system for separating ethylene, 2-methylbutane and at least one unsubstituted (C6-C12) hydrocarbon in a multi-component condensate mixture. The separations system includes a feed conduit in fluid communication with a source of the multi-component condensate mixture, a stripper column in fluid communication with the feed conduit, where the stripper column separates the multi-component condensate mixture into a heavies component mixture with at least one unsubstituted (C6-C12) hydrocarbon, and a top mixture having a medium component (s) that include at least the 2-methylbutane and a light component (s) that include at least the ethylene. The separations system further includes a flash drum that separates the top mixture into the medium component (s) and the light component (s). The separations system does not include a distillation column disposed between the source of the multi-component condensate mixture and the flash drum.Type: GrantFiled: June 12, 2019Date of Patent: December 26, 2023Assignee: Dow Global Technologies LLCInventors: Mark W. Blood, Brent J. Sherman
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Patent number: 11851535Abstract: A copolymer composition including a method having a first step involving heating and submerging of water-resistant polymer into a solvent bath until the water-resistant polymer dissolves into the solvent bath resulting in a water-like solution. A second step includes precipitating the water-like solution forming a wax within the water-like solution. A third step involving filtering and distilling of the water-solution separating the wax from the solvent bath. A fourth step involving dispersing of the wax in a liquid carrier resulting in a combination. A fifth step involving polymerizing of the wax into the water-resistant polymer by introducing the combination into water-soluble polymer during an extrusion process resulting in a homogeneous mixture. A sixth step involving programming the water solubility of the homogeneous mixture.Type: GrantFiled: March 29, 2023Date of Patent: December 26, 2023Inventor: Manuel Rendon
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Patent number: 11845855Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.Type: GrantFiled: December 10, 2020Date of Patent: December 19, 2023Assignee: UNIVATION TECHNOLOGIES LLCInventors: Swapnil Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
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Patent number: 11845826Abstract: Methods for preparing a metallocene-based catalyst composition that can impact the long chain branching of ethylene homopolymers and copolymers produced using the catalyst composition are described. The catalyst composition can be prepared by contacting a metallocene compound, a hydrocarbon solvent, and a first organoaluminum compound for a first period of time to form a metallocene solution, and then contacting the metallocene solution with an activator-support and a second organoaluminum compound for a second period of time to form the catalyst composition.Type: GrantFiled: August 26, 2021Date of Patent: December 19, 2023Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Tony R. Crain
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Patent number: 11845854Abstract: A polyethylene composition for producing blown films, made from or containing an ethylene homopolymer or copolymer A) and an ethylene copolymer B) having a MIE value lower than the MIE value of A), the composition having the following features: 1) density from 0.948 to 0.960 g/cm3; 2) ratio MIF/MIP from 20 to 40; 3) MIF from 6 to less than 15 g/10 min.; 4) HMWcopo index from 0.5 to 3.5; 5) long-chain branching index, LCBI, equal to or lower than 0.82; 6) ?0.02 of equal to or less than 150000.Type: GrantFiled: September 4, 2019Date of Patent: December 19, 2023Assignee: Basell Polyolefine GmbHInventors: Gerhardus Meier, Ulf Schueller, Andreas Maus, Harilaos Mavridis
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Patent number: 11834534Abstract: A propylene ethylene copolymer having the following features: an ethylene content of between 1.0 and 4.0% by weight; a molecular weight distribution (MWD), expressed in terms of Mw/Mn, of greater than 4.0; a content of xylene soluble fraction (XS) and ethylene content (C2) that fulfills the following relationship: (C2×1.1)+1.25<XS<(C2×1.1)+2.50 where: XS=% by weight of the fraction soluble in xylene at 25° C.; C2=% by weight of ethylene units in the copolymer determined via NMR; a melt flow rate (MFR; 230° C., 2.16 kg) of between 30 to 75 g/10 min; an intrinsic viscosity of the copolymer of lower than 1.5 dl/g; and an intrinsic viscosity of the fraction soluble in xylene at 25° C. of higher than 0.32 dl/g.Type: GrantFiled: August 12, 2019Date of Patent: December 5, 2023Assignee: Basell Poliolefine Italia S.r.l.Inventors: Gianpiero Ferraro, Gianni Vitale, Fabrizio Piemontesi, Benedetta Gaddi, Gianni Collina, Giampiero Morini, Caroline Cathelin, Marco Ciarafoni, Claudio Cavalieri
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Patent number: 11827777Abstract: The present invention is directed to a polypropylene composition (P) comprising a first random propylene copolymer (A) and a second random propylene copolymer (B), said first random propylene copolymer (A) and said second random propylene copolymer (B) being copolymers of propylene and 1-hexene. Further, the present invention is directed to a blown film comprising said polypropylene composition (P).Type: GrantFiled: September 9, 2019Date of Patent: November 28, 2023Assignee: Borealis AGInventors: Jingbo Wang, Markus Gahleitner, Klaus Bernreitner, Pauli Leskinen, Peter Niedersüss