Patents Assigned to Arkema Inc.
  • IRRADIATED FLUOROPOLYMER ARTICLES HAVING LOW LEACHABLE FLUORIDE IONS
    Publication number: 20150329697
    Abstract: The invention relates to fluoropolymer articles that have been irradiated with at least 5 Kilo Gray of radiation, where the resulting articles have low levels of leachable or extractable fluoride ion. The low fluoride ion migration from the irradiated article is due to the presence of low levels of metallic salts or oxides in the fluoropolymer composition. The invention is especially useful for fluoropolymer articles in which the fluoropolymer layer contacts a biological or pharmaceutical fluid, and that are subjected to sterilization by irradiation.
    Type: Application
    Filed: July 24, 2015
    Publication date: November 19, 2015
    Applicant: Arkema Inc.
    Inventor: Saeid Zerafati
  • Method of obtaining a combination of Z and E stereoisomers of hydrofluoroolefins
    Patent number: 9181154
    Abstract: Disclosed are the combinations containing Z and E stereoisomers of hydrofluoroolefins where the more toxic isomer is less than about 30% weight of the combination (vs the sum of Z+E), to minimize the toxicity impact in the applications they will be used for such as cooling and heat fluids, foams blowing agents or solvents. Also disclosed are means to obtain combinations containing Z and E stereoisomers of hydrofluoroolefins.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: November 10, 2015
    Assignee: Arkema Inc.
    Inventors: Philippe Bonnet, Maher Y. Elsheikh
  • Method of recovering carboxylic acids from dilute aqueous streams
    Patent number: 9156769
    Abstract: Improvement in separating lower carboxylic acids from aqueous streams via liquid-liquid extraction with pressurized liquefied propylene and/or propane, wherein carboxylic acid is transferred from the aqueous phase into the liquid solvent phase (extract). The extracted carboxylic acids are recovered as a liquid concentrate by evaporating off the propylene and/or propane solvent from the extract at mild temperatures.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: October 13, 2015
    Assignee: Arkema Inc.
    Inventor: Steven G. Schon
  • COMPOSITE POLYMER MODIFIERS
    Publication number: 20150284553
    Abstract: The invention relates to composite polymer modifiers for thermoplastic resins, and especially for polyvinyl chloride (PVC). The composite modifier is an intimate blend of mineral filler and polymeric process aid, which is formed by the co-powderization of aqueous emulsions, suspensions or slurries of one or more mineral filler(s) and process aid(s). The resulting composite modifier provides more effective modification of the thermoplastic resin than by the use of the dried components formed separately. The composite modifier may also contain other co-powderized components such as impact modifiers, for additional benefits.
    Type: Application
    Filed: June 17, 2015
    Publication date: October 8, 2015
    Applicant: Arkema Inc.
    Inventor: Lisa B. RACHWAL
  • HEAT TRANSFER COMPOSITION OF OXYGENATED LUBRICANT WITH HYDROFLUOROOLEFIN AND HYDROCHLOROFLUOROOLEFIN REFIGERANTS
    Publication number: 20150252240
    Abstract: The present invention relates to heat transfer compositions comprising an oxygenaged lubricant comprising polyvinyl ether oil and a refrigerant comprising hydrofluoroolefins and/or hydrochlorofluoroolefins. The heat transfer compositions of the present invention have the benefit of exhibiting superior thermal stability and are useful in such applications as refrigeration, air conditioning, and heat transfer systems.
    Type: Application
    Filed: May 19, 2015
    Publication date: September 10, 2015
    Applicant: Arkema Inc.
    Inventors: Brett L. Van Horn, Beatrice Boussand
  • Irradiated fluoropolymer articles having low leachable fluoride ions
    Patent number: 9120912
    Abstract: The invention relates to fluoropolymer articles that have been irradiated with at least 5 Kilo Gray of radiation, where the resulting articles have low levels of leachable or extractable fluoride ion. The low fluoride ion migration from the irradiated article is due to the presence of low levels of metalic salts or oxides in the fluoropolymer composition. The invention is especially useful for fluoropolymer articles in which the fluorpolymer layer contacts a biological or pharmaceutical fluid, and that are subjected to sterilization by irradiation.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: September 1, 2015
    Assignee: Arkema Inc.
    Inventor: Saeid Zerafati
  • Radical trap in oil and gas stimulation operations
    Patent number: 9102866
    Abstract: A method for using a fracture fluid in forming subterranean fractures includes delaying degradation of a polymer in a fracture fluid when the fracture fluid comprises a breaker by combining at least one radical scavenger with the fracture fluid. The mixture for use in a fracture fluid comprises a radical scavenger and a breaker. A method of fracturing a subterranean formation may include providing a fracture fluid comprising a proppant, a polymer, and a breaker and adding a radical scavenger to the fracture fluid. The fracture fluid is supplied to a desired location in the subterranean formation to form at least one fracture where the viscosity of the fracture fluid is maintained. The breaker is then allowed to degrade the polymer and reduce the viscosity of the fracture fluid at a specific time or temperature.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: August 11, 2015
    Assignee: Arkema Inc.
    Inventors: Sri R. Seshadri, Leonard H. Palys, James J. Feorino, Jr.
  • Composite polymer modifiers
    Patent number: 9085679
    Abstract: The invention relates to composite polymer modifiers for thermo-plastic resins, and especially for polyvinyl chloride (PVC). The composite modifier is an intimate blend of mineral filler and polymeric process aid, which is formed by the co-powderization of aqueous emulsions, suspensions or slurries of one or more mineral filler(s) and process aid(s). The resulting composite modifier provides more effective modification of the thermoplastic resin than by the use of the dried components formed separately. The composite modifier may also contain other co-powderized components such as impact modifiers, for additional benefits.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: July 21, 2015
    Assignee: Arkema Inc.
    Inventor: Lisa B. Rachwal
  • Aqueous process for making a stable fluoropolymer dispersion
    Patent number: 9068071
    Abstract: A novel aqueous polymerization process for making fluoropolymer dispersions is disclosed in which non-ionic non-fluorinated emulsifier is used to produce fluoropolymer emulsions. The emulsifiers used in the invention are those that contain segments of polyethylene glycol, polypropylene glycol, and/or polytetamethylene glycol with repeating units of 3 to 100. The process and fluoropolymer produced contain no fluorinated surfactant.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: June 30, 2015
    Assignee: Arkema Inc.
    Inventors: Ramin Amin-Sanayei, Christyn B. Olmstead
  • Separation of R-1233 from hydrogen fluoride
    Patent number: 9061958
    Abstract: The invention relates to a process for separating monochloro-trifluoropropenes such as HCFC-1233 from azeotrope or azeotrope like combinations with HF. The process employs a cold, liquid phase separations and multiple azeotropic distillation trains.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: June 23, 2015
    Assignee: Arkema Inc.
    Inventors: John A. Wismer, Benjamin Bin Chen
  • Random copolymer oil return agents
    Patent number: 9062236
    Abstract: The present invention relates to polymeric oil-return agents which solubilize or disperse mineral oil and/or synthetic oil lubricants with hydrofluorocarbon, hydrochlorofluorocarbon, and hydrofluoroolefin-based refrigerants and refrigerant compositions containing them. The polymeric oil-return agents are random copolymers containing less than about 30 wt % fluorine and produced from at least one monomer providing compatibility with the oil phase and at least one monomer providing compatibility with the refrigerant phase. The polymeric oil-return agents provide for more efficient return of mineral oil and/or synthetic oil lubricants from non-compressor zones back to a compressor zone in a refrigeration system.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: June 23, 2015
    Assignee: Arkema Inc.
    Inventors: Brett L. Van Horn, Christopher A. Bertelo, Scott C. Schmidt, Noah E. Macy, George J. Papakonstantopoulos
  • Liquid cleaning composition
    Patent number: 9062280
    Abstract: The present invention relates to a liquid cleaning composition comprising a peroxygen bleach, a sulfonated anionic surfactant and an amphoteric/zwitterionic surfactant where the sulfonated anionic surfactant and the amphoteric/zwitterionic surfactants are in a ratio of from 0.1:1 to 13:1. The combination of the sulfonated anionic surfactant and the amphoteric/zwitterionic surfactants provides for high viscosities and improved cleaning performance.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: June 23, 2015
    Assignee: Arkema Inc.
    Inventors: Shui-Ping Zhu, Keith R. Genco, Stephen W. Carson
  • Flexible multilayer vinylidene fluoride tubes
    Patent number: 9056447
    Abstract: The invention relates to a tough, flexible multi-layer tube or other structure having a vinylidene fluoride contact layer. Such a tube is especially useful for high-purity contact applications, and contact where chemical resistance is needed. The vinylidene fluoride layer is melt-processible and may be a homopolymer, copolymer or terpolymer.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: June 16, 2015
    Assignee: Arkema Inc.
    Inventors: Gregory S. O'Brien, William J. Hartzel, James J. Henry
  • COATING COMPOSITIONS FOR IMPROVED BLOCK RESISTANCE
    Publication number: 20150152280
    Abstract: Embodiments include coating compositions, methods of coating a substrate, and substrates having at least one surface coated according to the methods of the present disclosure. The aqueous, substantially volatile organic compound (VOC)-free coating compositions includes an acrylic latex and a vinyl acetate-ethylene latex including from about 10 to about 90 weight percent of a vinyl acetate-ethylene polymer, based on total weight of acrylic polymer and vinyl acetate-ethylene polymer, having a Tg from about ?20 to about 20 degrees Celsius; and from about 10 to about 90 weight percent of an acrylic polymer, based on the total weight of acrylic polymer and vinyl acetate-ethylene polymer, the acrylic polymer comprising, in polymerized form, at least one ethylenically unsaturated (meth)acrylic monomer and from about 0.
    Type: Application
    Filed: February 4, 2015
    Publication date: June 4, 2015
    Applicant: Arkema Inc.
    Inventors: Wenjun Wu, Jeffrey A. SCHNEIDER, Albert R. MINER, II
  • Multilayer fluoropolymer films
    Patent number: 9044923
    Abstract: The invention relates to a multi-layer film having at least one fluoropolymer layer, useful for high-purity contact applications. Preferably the fluoropolymer layer(s) are polyvinylidene fluoride polymers and copolymers.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: June 2, 2015
    Assignee: Arkema Inc.
    Inventors: William Hartzel, Saeid Zerafati, Gregory S. O'Brien
  • Epoxidized composition and methods for making the same
    Patent number: 9034965
    Abstract: The invention relates to an epoxidized composition and a process for producing the same. The epoxidized composition is useful as a plasticizer for thermoplastics such as polyvinyl chloride (PVC) and other polymers. The process includes forming a blend containing one or more fatty acid esters and one or more bio-based oils; and epoxidizing the blend to form the epoxidized composition. This process has several advantages over a process of forming a blend of already epoxidized fatty acid esters and epoxidized bio-based oils.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: May 19, 2015
    Assignee: Arkema Inc.
    Inventors: Mohammad R. Kazemizadeh, Timothy E. McKinney, David E. Maixner, Zuzanna Donnelly
  • Process and performance aid for carbon nanotubes
    Patent number: 9029458
    Abstract: A polymer composition which includes carbon nanotubes in a resin matrix such as cyclic butylene terephthalate where the resin matrix is compounded into a polymer matrix. The carbon nanotube resin matrix is compatible in a wide variety of polymer matrixes having many end uses. The resin matrix provides good compatibility with many polymer systems, e.g., polyamides, polyesters, acrylics and is easy to use exhibiting a low melting point and low viscosity in melt and provides for a polymer matrix having good properties, including a higher electrical conductivity and/or increased mechanical properties.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: May 12, 2015
    Assignee: Arkema Inc.
    Inventors: Thomas P. McAndrew, Christophe Roger, Emily Bressand, Pierre Laurent
  • BATTERY BASED ON ORGANOSULFUR SPECIES
    Publication number: 20150118535
    Abstract: Metal-sulfur batteries, such as lithium-sulfur batteries, are prepared using one or more organosulfur species such as organic polysulfides and organic polythiolates as part of the liquid or gel electrolyte solution, as part of the cathode, and/or as part of a functionalized porous polymer providing an intermediate separator element.
    Type: Application
    Filed: April 9, 2013
    Publication date: April 30, 2015
    Applicant: Arkema Inc.
    Inventors: Gary S. Smith, Lijuan Wang
  • Process for the manufacture of hydrochlorofluoroolefins
    Patent number: 8987534
    Abstract: The invention also relates a process for the manufacture of trans 1-chloro3,3,3-trifluoropropene. The process comprises an isomerization step from cis 1233zd to trans 1233zd.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: March 24, 2015
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, John A. Wismer, Sri R. Seshadri
  • Process for the manufacture of hydrochlorofluoroolefins
    Patent number: 8987535
    Abstract: The invention also relates a process for the manufacture of trans 1-chloro3,3,3-trifluoropropene. The process comprises an isomerization step from cis 1233zd to trans 1233zd.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: March 24, 2015
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Anne Pigamo, Sri R. Seshadri