Patents Examined by Roberto Rabago
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Patent number: 10696774Abstract: A propylene-comonomer block copolymer may have a molecular weight distribution Mw/Mn of at least 1.7, a percentage of enthalpy measured between Ti and [Tm?18° C.] of at least 20% of the total enthalpy, and a ratio E1/Co of at least 0.80. The propylene-comonomer block copolymer may be produced by polymerizing propylene in the presence of at least one comonomer and a bridged metallocene catalyst. The bridged metallocene catalyst may include bridged fluorenyl, bridged indenyl metallocene, or any combination thereof. The propylene-comonomer block copolymer may be used as a heat seal layer for biaxially oriented multi-layer films.Type: GrantFiled: July 9, 2014Date of Patent: June 30, 2020Assignee: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Olivier Lhost, Aurélien Vantomme, Alexandre Welle
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Patent number: 10654948Abstract: An ethylene polymer having a density greater than about 0.930 g/ml and a level of long chain branching ranging from about 0.001 LCB/103 carbons to about 1.5 LCB/103 carbons as determined by SEC-MALS. An ethylene polymer having a level of short chain branching ranging from about 0 to about 10 mol. % and a level of long chain branching ranging from about 0.001 LCB/103 carbons to about 1.5 LCB/103 carbons as determined by SEC-MALS. An ethylene polymer having a polydispersity index ranging from about 8 to about 25 and a level of long chain branching ranging from about 0.001 LCB/103 carbons to about 1.5 LCB/103 carbons as determined by SEC-MALS.Type: GrantFiled: March 13, 2013Date of Patent: May 19, 2020Assignee: Chevron Phillips Chemical Company LPInventors: Carlos A. Cruz, Qing Yang, Max P. McDaniel, Joel L. Martin, Tony R. Crain, Steve M. Wharry, Jared L. Barr, Youlu Yu
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Patent number: 10626201Abstract: The invention relates to an efficient polymerization process and its use to produce novel copolymers with a specific microstructure. In particular, the invention relates to butyl rubbers with novel microstructure, preferably those obtainable by copolymerization of monomer mixtures comprising isobutylene and isoprene. In a further aspect the invention relates to halogenated copolymers obtainable from such novel copolymers by halogenation.Type: GrantFiled: April 30, 2015Date of Patent: April 21, 2020Inventor: Steven John Teertstra
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Patent number: 10619035Abstract: A polyethylene composition having the following features: 1) density from 0.945 to 0.958 g/cm3, determined according to ISO 1183 at 23° C.; 2) ratio MIF/MIP from 20 to 43; 3) MIF from 4.0 to less than 8.5 g/10 min.; 4) HMWcopo index from 3.5 to 20; and 5) long-chain branching index, LCBI, equal to or lower than 0.82. The polyethylene composition can be used to produce blown films.Type: GrantFiled: June 6, 2016Date of Patent: April 14, 2020Assignee: Basell Polyolefine GmbHInventors: Iakovos Vittorias, Gerhardus Meier, Ulf Schüller, Andreas Maus, Jens Wiesecke, Harilaos Mavridis
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Patent number: 10611878Abstract: The present invention is a hydrogenated syndiotactic crystalline dicyclopentadiene ring-opening polymer having a melting point of 280° C. or higher and a syndiotacticity of higher than 90%, and a syndiotactic dicyclopentadiene ring-opening polymer, and a method for producing the syndiotactic dicyclopentadiene ring-opening polymer, and a method for producing the hydrogenated syndiotactic crystalline dicyclopentadiene ring-opening polymer, and a formed article, and a method for producing the formed article. One aspect of the invention provides a hydrogenated syndiotactic crystalline dicyclopentadiene ring-opening polymer having a high melting point of 280° C. or higher, and a syndiotacticity of higher than 90%.Type: GrantFiled: April 30, 2015Date of Patent: April 7, 2020Assignee: ZEON CORPORATIONInventor: Shigetaka Hayano
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Patent number: 10597467Abstract: By the use of special cross-linkers that contain at least two isocyanate groups, hydroxyl group-containing optionally hydrogenated nitrile rubber polymers can be successfully cross-linked. Preferred cross-linkers contain allophanate, biuret, uretdione, uretonimine, bridged carbamate, carbodiimide, isocyanurate, iminooxadiazinedione or oxadiazinetrione structural elements.Type: GrantFiled: April 15, 2011Date of Patent: March 24, 2020Assignee: ARLANXEO DEUTSCHLAND GMBHInventors: Sven Brandau, Michael Klimpel, Hans Magg
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Patent number: 10584048Abstract: A process for obtaining random copolymers from itaconic acid and/or isomers and sodium alkenyl sulfonates is by polymerization in an aqueous solution via free radicals at an acidic pH in the range from 1.0 to 3.5 and with a redox system as initiator. The copolymers can be used as calcium carbonate and calcium, strontium and barium sulfates mineral scale inhibitors and as dispersants of clays, iron oxides, calcium carbonate and strontium, barium and calcium sulfates. Random copolymers prevent and control damage in an oil reservoir, obstruction of water injection and crude oil production pipelines, and in production rigs due to mineral scale precipitation caused by high levels of salinity of the injection water and formation water. Random copolymers are tolerant to high concentrations of divalent ions, such as calcium, magnesium, strontium and barium, and can be added to the reservoir and to injection or production pipelines, treated water, sea water and water that is used as means of transportation.Type: GrantFiled: April 24, 2014Date of Patent: March 10, 2020Assignee: INSTITUTO MEXICANO DEL PETROLEOInventors: Raul Hernandez Altamirano, Violeta Yasmin Mena Cervantes, Luis Silvestre Zamudio Rivera, Erick Emanuel Luna Rojero, Jose Manuel Martinez Magadan, David Aaron Nieto Alvarez, Mirna Pons Jimenez, Alejandro Ramirez Estrada, Maria del Pilar Arzola Garcia
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Patent number: 10570218Abstract: A vulcanizing composition useful for the vulcanization of vulcanizable formulations is disclosed. The vulcanizing composition includes a vulcanizing agent which in turn includes a cyclododecasulfur compound. A cyclododecasulfur compound characterized by a DSC melt point onset of between 155° C. and 167° C. when measured at a DSC heat rate of 20° C./minute is also disclosed.Type: GrantFiled: May 29, 2018Date of Patent: February 25, 2020Assignee: Eastman Chemical CompanyInventors: Scott Donald Barnicki, Frederick Ignatz-Hoover, Robert Thomas Hembre, Andrew Neil Smith, Henk Kreulen
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Patent number: 10563056Abstract: An expandable thermoplastic resin particle including a polymer obtained by a process including polymerizing monomers including 60 to 80 parts by weight of ?-methylstyrene and 40 to 20 parts by weight of acrylonitrile. A content of residual monomeric components in the expandable thermoplastic resin particle is not more than 0.5% by weight. When an expanded mold article is produced from the expandable thermoplastic resin particle at an expansion ratio of 10 times, foam cells in a cross section of the expanded mold article have an average chord length of from 20 ?m to 60 ?m.Type: GrantFiled: September 16, 2015Date of Patent: February 18, 2020Assignee: KANEKA CORPORATIONInventors: Atsushi Iida, Kirito Suzuki, Tatsuya Henmi
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Patent number: 10556997Abstract: A cross-linked rubber product is obtained by cross-linking an acrylic elastomer composition containing an acrylic elastomer obtained by copolymerization of an acrylate and a cross-linking site monomer. The molar fraction of an oxygen atom (a) in the acrylic elastomer is 11.3 mol % or less, the molar fraction of a nitrogen atom (b) in the acrylic elastomer is 0.5 mol % or less, and a volume change is from ?3 to 6% when the cross-linked rubber product is dipped in distilled water at 80° C. for 200 hours.Type: GrantFiled: February 23, 2016Date of Patent: February 11, 2020Assignee: ZEON CORPORATIONInventors: Nobuyoshi Emori, Tomonori Ogawa, Takanori Arakawa
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Patent number: 10550216Abstract: Provided is a multi-component copolymer having excellent crack growth resistance and wear resistance. The multi-component copolymer comprises conjugated diene units, non-conjugated olefin units and aromatic vinyl units, wherein: a peak top molecular weight of non-conjugated olefin parts linking only the non-conjugated olefin units is 500 or more and less than 40,000.Type: GrantFiled: October 11, 2016Date of Patent: February 4, 2020Assignee: BRIDGESTONE CORPORATIONInventors: Madoka Kimura, Shigeki Oishi, Tomoe Tanabe
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Patent number: 10544234Abstract: The present invention relates to functionalized copolymer rubbers containing nitrile groups and to the preparation thereof, to vulcanizable mixtures comprising functionalized copolymer rubbers containing nitrile groups and to the preparation thereof, and to vulcanizates based on functionalized copolymer rubbers containing nitrile groups, to the preparation thereof and to the use thereof as technical material.Type: GrantFiled: October 29, 2014Date of Patent: January 28, 2020Assignee: ARLANXEO DEUTSCHLAND GMBHInventors: Susanna Lieber, Karola Schneiders, Christoph Kins, Werner Obrecht
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Patent number: 10544238Abstract: Provided herein are methods for preparing a functionalized polyolefin from an unsaturated polyolefin containing one or more non-aromatic main-chain double bonds and for reducing the size and/or polydispersity index (i.e., increasing the homogeneity) of the unsaturated polyolefin.Type: GrantFiled: September 30, 2016Date of Patent: January 28, 2020Assignees: Chevron Oronite Company LLC, The University of Southern MississippiInventors: Robson F. Storey, Subramanyam Ummadisetty, Christopher Garrett Campbell, Casey D. Stokes, Young Chang
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Patent number: 10538599Abstract: The present invention relates to a modified polymer having a high modification ratio and an excellent affinity with a filler, a method of preparing the same, a rubber composition including the modified polymer, and a molded article prepared from the rubber composition. The modified polymer according to the present invention may exhibit a high modification ratio by including functional groups in a polymer main chain and on at least one end thereof, and thus, an affinity with a filler, such as silica, may be excellent. Also, the rubber composition according to the present invention may have excellent processability by including the modified polymer having an excellent affinity with the filler, and, as a result, a processed product (e.g., tire) prepared by using the rubber composition may have excellent tensile strength, abrasion resistance, and wet road surface resistance.Type: GrantFiled: December 1, 2016Date of Patent: January 21, 2020Assignee: LG Chem, Ltd.Inventors: Min Soo Kim, Seung Ho Choi, Dae June Joe, Won Mun Choi
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Patent number: 10538636Abstract: Specific benzocyclobutenes serve as intramolecular or intermolecular or both intramolecular or intermolecular crosslinkers. The benzocyclobutenes can be incorporated into polymers post polymerization or can be provided as monomers that participate in homopolymerization or copolymerization with other monomer to create the polymers having benzocyclobutenes that are exploited to carry out the crosslinking. At least some of the benzocyclobutenes taught herein can be used to carry out crosslinking a ambient temperatures.Type: GrantFiled: October 9, 2017Date of Patent: January 21, 2020Assignee: The University of AkronInventors: Coleen Pugh, Ajay Ramesh Amrutkar
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Patent number: 10526476Abstract: The invention relates to a high-pressure polymerisation process for the preparation of polyethylene. A polymer is added to the extruder via a side feed dosage unit wherein the MFIsf of the polymer added via the side feed dosage unit has a higher value than the melt flow index (MFLend) of the polyethylene end product and wherein the Mw/Mn of the end product increases at least 15% compared to the product wherein no polymer is dosed via the side feed.Type: GrantFiled: March 10, 2016Date of Patent: January 7, 2020Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Jacobus Christinus Josephus Franciscus Tacx, Franciscus Petrus Hermanus Schreurs, Diego Mauricio Castaneda Zuniga
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Patent number: 10525443Abstract: Provided is: a water-absorbent resin which has a better water absorption performance and with which it is possible to improve absorption performance under a load when used in an absorbent material. This water-absorbent resin, obtained by polymerising a water soluble ethylenically unsaturated monomer in the presence of an internal-crosslinking agent and by post-crosslinking using a post-crosslinking agent, has a water-absorption capacity of physiological saline under a load of 4.14 kPa of 16 mL/g or more, has a mass proportion of particles from 150 to 850 ?m relative to the whole proportion of 85 mass % or more, moreover has a mass proportion of particles from 300 to 400 ?m relative to the whole proportion of 20 mass % or more, and has an absorption capacity elasticity index represented by formula (I) of 68,000 or more. Absorption capacity elasticity index=storage elastic modulus [Pa]×centrifugal retention rate [g/g] . . . (I).Type: GrantFiled: November 4, 2014Date of Patent: January 7, 2020Assignee: Sumitomo Seika Chemicals Co. Ltd.Inventors: Masahiro Murakami, Tetsuhiro Hinayama, Hiroki Yabuguchi, Hideki Yokoyama
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Patent number: 10519304Abstract: A dual reactor solution process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have good processability, stiffness, and environmental stress crack resistance. The polyethylene compositions are suitable for compression molding or injection molding applications and are particularly useful in the manufacture of caps and closures for bottles.Type: GrantFiled: March 16, 2017Date of Patent: December 31, 2019Assignee: NOVA Chemicals (International) S.A.Inventor: XiaoChuan Wang
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Patent number: 10494538Abstract: Various embodiments of the present invention are directed to switchable carboxybetaine-based polymers, hydrogels, and/or elastomers, along with novel related monomers, crosslinkers, and methods. Under acidic conditions, the materials undergo self-cyclization and can catch and kill bacteria. Under neutral/basic conditions, these materials undergo ring-opening and can release killed bacterial cells and resist protein adsorption and bacterial attachment. These smart polymers, hydrogels and elastomers also show excellent mechanical properties making them highly desirable for many biomedical applications.Type: GrantFiled: May 30, 2014Date of Patent: December 3, 2019Assignee: THE UNIVERSITY OF AKRONInventors: Gang Cheng, Bin Cao
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Patent number: 10465021Abstract: An uncompounded particulate metallocene-produced polyethylene can have a multimodal molecular weight distribution and particle size distribution measured by obtaining at least four fractions by sieving. A set of Mw values including an Mw value for each fraction can be obtained. A set of Mn values including an Mn value for each fraction can be obtained. A ratio between a standard deviation value of the Mw set and a mean value of the Mw set can be equal to or less than 0.15. A ratio between a standard deviation value of the Mn set and a mean value of the Mn set can be equal to or less than 0.15. The uncompounded particulate metallocene-produced polyethylene can be prepared by a process that includes polymerization in an apparatus. The apparatus can include at least three serially connected loop reactors.Type: GrantFiled: July 26, 2013Date of Patent: November 5, 2019Assignee: FINA TECHNOLOGY, INC.Inventors: Aurelien Vantomme, Christopher Willocq, Daan Dewachter