Deoxidant Or Oxygen Scavenging Patents (Class 252/188.28)
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Publication number: 20130256323Abstract: This specification discloses a composition of a melt blend comprising a continuos polyester phase, a cobalt of manganese compound and a first scavenging compound wherein the first scavenging compound comprises at least one allylic group and at least one polar moiety and at least some of the first scavenging compound or the oligomer or the polymer comprising the first scavenging compound is not present in the continuous polyester phase. The partial insolubility is essential for oxygen scavenging and the solubility is essential for reducing haze. The composition is useful in preforms, container walls, and films for packaging.Type: ApplicationFiled: April 1, 2013Publication date: October 3, 2013Applicant: Chemtex Italia, S.p.A.Inventors: Ricardo Knudsen, D. Jeffrey Black, Gianluca Ferrari, Aaron Murray
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Patent number: 8476400Abstract: An oxygen-scavenging composition is provided that includes an oxygen-scavenging polymer and a catalyst. The oxygen-scavenging polymer, which in preferred embodiments is suitable for use in packaging articles, is a dendritic polymer having one or more oxygen-scavenging groups.Type: GrantFiled: August 21, 2008Date of Patent: July 2, 2013Assignee: Valspar Sourcing, Inc.Inventors: Richard D. Joslin, Jeffrey Niederst, Paul E. Share, Grant Schutte
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Publication number: 20130150785Abstract: According to embodiments of the present application, a color changeable dye can comprise a redox indicator, a reduction reaction initiator, an electron donor, an oxygen scavenger, an indicator barrier agent, a thickening agent and an agent to facilitate mixing. The color changeable dye is a first color in the presence of oxygen, capable of changing to a second color upon reduction in a substantially oxygen free environment, and capable of changing back to the first color after exposure to oxygen for a period of time corresponding to the intended use time of a disposable or limited use product. Methods of making and using the color changeable dye and apparatuses incorporating such dye are also disclosed.Type: ApplicationFiled: December 9, 2011Publication date: June 13, 2013Inventors: Gregory Lee Heacock, Dion Arledge Rivera
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Publication number: 20130112916Abstract: A method of dry coating oxidizable particles with activating particles. The method includes accreting at least portions of the activating particles onto surfaces of the oxidizable particles by mechanically induced juxtapositions to form composite particles; and abrading the composite particles to more evenly distribute the activating component over surfaces of the activating particles.Type: ApplicationFiled: December 26, 2012Publication date: May 9, 2013Applicant: Multisorb Technologies, Inc.Inventor: Stanislav E. SOLOVYOV
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Patent number: 8435336Abstract: A deoxidizer includes a porous body of fluorite-type cerium oxide represented by CeOx (where x is a positive number smaller than 2) and having a reversible oxygen deficiency. The deoxidizer has a specific surface area of 0.6 to 1.8 m2/g and a pore median diameter of 1.6 to 5.3 ?m. The cerium oxide used for the deoxidizer is produced by: firing a cerium-containing salt in the atmosphere at 500° C. to 1400° C. for 1 to 20 hours, to produce fluorite-type cerium oxide composed of a porous body; and firing the cerium oxide at 700° C. to 1100° C. for 1 to 3 hours in a reducing atmosphere having a hydrogen concentration equal to or above the lower explosive limit, to remove oxygen from the cerium oxide and produce the fluorite-type cerium oxide represented by CeOx and having a reversible oxygen deficiency.Type: GrantFiled: July 6, 2009Date of Patent: May 7, 2013Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Kazuya Kinoshita, Yuichi Senoo, Yousuke Shibata, Isamu Yashima
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Publication number: 20130095334Abstract: An oxygen-scavenging composition is provided that includes an oxygen-scavenging component and a catalyst. The oxygen-scavenging component, which in preferred embodiments is suitable for use in packaging articles, includes two or more oxygen-scavenging groups having different scavenging properties. In one embodiment, one of the oxygen-scavenging groups is an unsaturated bicyclic group.Type: ApplicationFiled: October 10, 2012Publication date: April 18, 2013Applicant: Valspar Sourcing, Inc.Inventor: Valspar Sourcing, Inc.
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Publication number: 20130075655Abstract: An extruded or molded article containing iron based oxygen scavenger, electrolytes, activated carbon, silica gel, or other water absorbing media, and optionally pore formers, is subjected to deformation to create voids or porosity, and subjected to water spraying or dipping to obtain a water activity of 0.4 or higher. The article is placed in a container or package containing oxygen sensitive articles.Type: ApplicationFiled: September 22, 2011Publication date: March 28, 2013Applicant: Multisorb Technologies, Inc.Inventor: Chieh-Chun CHAU
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Patent number: 8404148Abstract: The present invention relates to a polymer composition with an increased rate of oxygen-uptake by the presence of an oxidation catalyst. The invention further relates to a process to increase the rate of oxygen-uptake by a polymer composition. The invention also relates to a process to increase the oxo-biodegradability of a polymer composition and to the use of such a composition for the preparation of a product having a controlled lifetime. The invention further relates to a process to increase the rate of oxygen-scavenging in a composition containing a carbon-containing polymer, the composition obtained by this method and its use in the preparation of an oxygen-scavenging product. The present invention further relates to objects containing an oxygen scavenging layer containing such a composition.Type: GrantFiled: July 4, 2007Date of Patent: March 26, 2013Assignee: DSM IP Assets B.V.Inventors: Pieter Gijsman, Johan Franz Gradus Antonius Jansen, Dirk Armand Wim Stanssens
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Publication number: 20130068999Abstract: The present invention provides a method for generating a gas that may be used for startup and shutdown of a fuel cell. In a non-limiting embodiment, the method may include generating a nitrogen-rich stream; merging the nitrogen-rich stream with a hydrocarbon fuel stream into a feed mixture stream; and catalytically converting the feed mixture into a reducing gas.Type: ApplicationFiled: November 12, 2012Publication date: March 21, 2013Applicant: LG Fuel Cell Systems Inc.Inventor: LG Fuel Cell Systems Inc.
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Patent number: 8308976Abstract: An oxygen-scavenging composition is provided that includes an oxygen-scavenging component and a catalyst. The oxygen-scavenging component, which in preferred embodiments is suitable for use in packaging articles, includes two or more oxygen-scavenging groups having different scavenging properties. In one embodiment, one of the oxygen-scavenging groups is an unsaturated bicyclic group.Type: GrantFiled: October 10, 2008Date of Patent: November 13, 2012Assignee: Valspar Sourcing, Inc.Inventors: Paul Share, Jeffrey Niederst, Richard Evans, Grant Schutte
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Patent number: 8277892Abstract: A method is disclosed for manufacturing one or more oxygen scavenging particles, wherein the particle(s) comprises an oxidizable metal particle, such as elemental iron; an acidifying electrolyte such as sodium or potassium bisulfate and optionally a water hydrolysable Lewis acid, such as aluminum chloride. The method comprises the step of coating the oxidizable particle with a first compound and then reacting the first compound with a second compound to form a third compound, wherein the third compound promotes the reaction of the oxidizable particle with oxygen.Type: GrantFiled: February 23, 2007Date of Patent: October 2, 2012Assignee: Multisorb Technologies, Inc.Inventor: Kevin L. Rollick
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Patent number: 8268048Abstract: Solid nanoparticulate transition metal complexes of Co(II) salen exhibit reversible oxygen absorption in a near stoichiometric manner. In contrast, no measurable oxygen binding was observed with unprocessed Co(II) salen.Type: GrantFiled: October 14, 2009Date of Patent: September 18, 2012Assignee: University of KansasInventors: Bala Subramaniam, Andrew S. Borovik, Chad A. Johnson
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Patent number: 8226850Abstract: An oxygen scavenging system comprising a free radical scavenger (e.g., ?-tocopherol, trimethylhydroquinone, ubiquinol, carotenoids, flavonoids, etc. and mixtures thereof) and a transition metal (e.g., iron (II), copper, manganese, cobalt, etc. and mixtures thereof) in a medium is generally provided. The medium containing the antioxidant and the transition metal has been thermally processed by heating to at least about 150° F. for at least about 10 minutes. Methods of removing oxygen from an environment surrounded by a medium containing the oxygen scavenging system and methods of making the oxygen scavenging system in a medium are also provided.Type: GrantFiled: September 22, 2009Date of Patent: July 24, 2012Assignee: Clemson University Research FoundationInventors: Youngjae Byun, William S. Whiteside
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Patent number: 8221647Abstract: An oxygen-absorbing composition for use as a component of a plastic packaging material that includes in relatively sufficient proportions iron, acidifier, and electrolyte.Type: GrantFiled: May 23, 2005Date of Patent: July 17, 2012Assignee: Multisorb Technologies, Inc.Inventor: George E. McKedy
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Publication number: 20120175555Abstract: Use of thermoplastic elastomer to increase oxygen scavenger activity of functionalized polyolefin films. An oxygen-scavenging composition comprising (I) an oxidizable metal component, (II) an electrolyte component, (III) a non-electrolytic, acidifying component, and (IV) a copolyester or copolyamide thermoplastic elastomer.Type: ApplicationFiled: August 13, 2010Publication date: July 12, 2012Applicant: BASF SEInventors: Edoardo Menozzi, Enrico Galfré
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Patent number: 8182888Abstract: A polymer with a backbone and an unsaturated side chain attached to the backbone. The polymer may optionally be combined with an oxidation catalyst and/or other ingredients.Type: GrantFiled: July 8, 2011Date of Patent: May 22, 2012Assignee: Valspar Sourcing, Inc.Inventors: Paul E. Share, Keith R. Pillage, Charles I. Skillman, Paul E. Fuchs
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Publication number: 20120118569Abstract: An oxygen scavenger for completion brines effective and stable in high temperature subterranean formations. In one embodiment, the scavenger contains erythorbate and alkylhydroxlyamine.Type: ApplicationFiled: November 16, 2010Publication date: May 17, 2012Inventor: Jay Paul Deville
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Patent number: 8168079Abstract: A molded oxygen absorbent composition and a process of producing the molded oxygen absorbent composition are disclosed. The molded oxygen absorbent composition is composed of a molded product of an oxygen absorbent composition which contains an oxygen absorbing substance, water or moisture, and a swelling component capable of being swelled with water or moisture. The product is formed by pressure molding the composition. The molded oxygen absorbent composition is reduced in its size and excellent in oxygen absorbing property.Type: GrantFiled: March 25, 2011Date of Patent: May 1, 2012Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Ken Sugimoto, Yoshinobu Miyabe, Masaharu Udagawa, Takahiro Seki
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Publication number: 20120095144Abstract: The invention is directed to a concentrate comprising a liquid carrier material and at least one additive for a polymer or polymer blend, wherein the liquid carrier material is a fatty acid ester of trimethylolpropane, wherein the fatty acid is a C6 to C16 fatty acid having a linear or branched chain, oleate or isostearate, and wherein the additive is more specifically a colourant, such as a dye or pigment.Type: ApplicationFiled: April 7, 2010Publication date: April 19, 2012Inventors: Jules Caspar Albert Anton Roelofs, Johan Gerrit
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Patent number: 8137744Abstract: An identification label changes color in an irreversible manner once put into contact with water/humidity. The label has a water-absorbable paper-based substrate having a surface on which an ink zone formed by printing of water-repellent or hydrophobic ink thereon and an opposite second surface on which a coating layer is formed. The ink zone has a color substantially identical to color of the substrate. The coating layer contains water soluble substance, which dissolves into water to form a solution that, once being absorbed by the substrate, changes the color of the substrate, the color of the solution being different from that of the substrate. A layer of adhesive is formed below the coating layer. Alternatively, the coating layer is formed on a surface of a double-sided adhesive layer and is bonded to a surface of the substrate opposite to the surface on which the ink zone is formed.Type: GrantFiled: April 29, 2009Date of Patent: March 20, 2012Assignee: E&I Marketing Consultant Co., Ltd.Inventor: Edison Lu
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Publication number: 20120012784Abstract: The present invention provides an oxygen-scavenging composition and articles formed therefrom. The oxygen-scavenging composition preferably includes an oxygen-scavenging polymer having an unsaturated bicyclic group, a based polymer, and an optional oxidation catalyst. The base polymer preferably includes a substituted or unsubstituted addition backbone, which may include heteratoms.Type: ApplicationFiled: October 10, 2008Publication date: January 19, 2012Applicant: VALSPAR SOURCING, INC.Inventors: Paul Share, Jeffrey Niederst, Richard Evans, Grant Schutte
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Publication number: 20120015159Abstract: Cyclic carbamate functional compounds, which are the reaction product of a cyclic carbamate having an acrylate functional group, such as N-(2-acryloyloxyethyl)oxazolidinone, with aliphatic amine compounds, said cyclic carbamate functional compounds being useful as oxygen scavengers in energy-curable compositions, such as inks, coatings and adhesives, that comprise (a) the cyclic carbamate functional compound, (b) reactive monomers and/or oligomers and, optionally, (c) a photoinitiator.Type: ApplicationFiled: March 11, 2010Publication date: January 19, 2012Applicant: Sun Chemical B.V.Inventors: Shaun Herlihy, Brian Rowatt
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Publication number: 20120001121Abstract: Disclosed is an oxygen-absorbable solvent-soluble resin having both oxygen absorbability and adhesive properties. Specifically disclosed is an oxygen-absorbable solvent-soluble resin which comprises an acid component (A), an acid component (B) and a polyester having a constituent unit derived from a glycol component, wherein the ratio of the amount of the acid component (A) to the total amount of the acid components is 40 to 80 mol % and the ratio of the amount of the acid component (B) to the total amount of the acid components is 15 to 35 mol %. The acid component (A): tetrahydrophthalic acid or a derivative thereof, or tetrahydrophthalic anhydride or a derivative thereof; and the acid component (B): terephthalic acid.Type: ApplicationFiled: March 8, 2010Publication date: January 5, 2012Applicant: Toyo Seikan Kaisha, Ltd.Inventors: Yoichi Ishizaki, Yoshihiro Ohta, Yui Yamaguchi
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Patent number: 8080212Abstract: The invention is a method, triggering unit, and system for activating an oxygen scavenging composition at high speeds. The triggering unit includes a plurality of UV lamps that can operate at increased temperatures and have high output intensites from about 10 to 35 mW/cm2. The triggering unit can activate films at speeds from about 20 to 100 fps. Mercury amalgam lamps are useful in the practice of the invention. The invention also includes a UV dose management system and film tensioning system that facilitates triggering at high film speeds. The UV dose management system controls the amount of UV exposure that the film receives so that the oxygen scavenging rate of the activated composition can be controlled.Type: GrantFiled: August 27, 2010Date of Patent: December 20, 2011Assignee: Cryovac, Inc.Inventors: Drew Ve Speer, Paul D. Spence, Gregory E. McDonald, Timothy S. Dennison, Gregory H. Grossman, Csaba F. Kiss, Jason G. Verrett, Charles C. Zende
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Publication number: 20110278499Abstract: The invention provides an article for oxygen absorption comprising a container containing a water-soluble ion source, an water activated oxygen scavenger, and a rupturable canister of hydrated polymer. The invention provides in another embodiment a method for providing timed or controlled oxygen absorption comprising providing an article for oxygen absorption comprising a container containing a water-soluble ion source, an water activated oxygen scavenger, and a rupturable canister of hydrated polymer, rupturing the canister, whereby the hydrated polymer and water-soluble ion source come in contact and release water, and the water as it is released activates the oxygen scavenger.Type: ApplicationFiled: May 12, 2010Publication date: November 17, 2011Inventors: George E. McKedy, Chieh-Chun Chau, Stanislav E. Solovyov
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Publication number: 20110281125Abstract: The invention provides a biodegradable oxygen absorbing plastic comprising a biodegradable substrate a sufficient concentration of reduced iron particles to adsorb oxygen in significant quantities and reduce the deformation temperature of the substrate substantially below the deformation temperature without iron particles present.Type: ApplicationFiled: May 12, 2010Publication date: November 17, 2011Applicant: Multisorb Technologies, Inc.Inventors: Chieh-Chun Chau, Thomas H. Powers, Stanislav Solovyov
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Patent number: 8057586Abstract: The invention provides a produce preserving article comprising a mixture of humectant and silica gel sorbent.Type: GrantFiled: July 28, 2008Date of Patent: November 15, 2011Assignee: Multisorb Technologies, Inc.Inventors: Thomas H. Powers, John Crump, George E. McKedy
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Patent number: 8048201Abstract: An oxygen scavenger is provided. An oxygen scavenger comprises iron, malic acid, and a wicking agent. A method for scavenging oxygen from an enclosed container comprises providing an oxygen scavenger compound comprising iron, malic acid, and a wicking agent, sealing the composition in an oxygen permeable, water impermeable container, and activating the composition by injecting water into the container.Type: GrantFiled: March 26, 2009Date of Patent: November 1, 2011Assignee: Desiccare, IncInventors: Marcus Dukes, John Hart
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Publication number: 20110259778Abstract: An oxygen-scavenging composition is provided that includes an oxygen-scavenging component and a catalyst. The oxygen-scavenging component, which in preferred embodiments is suitable for use in packaging articles, includes two or more oxygen-scavenging groups having different scavenging properties. In one embodiment, one of the oxygen-scavenging groups is an unsaturated bicyclic group.Type: ApplicationFiled: October 10, 2008Publication date: October 27, 2011Applicant: VALSPAR SOURCING, INC.Inventors: Paul Share, Jeffrey Niederst, Richard Evans, Grant Schutte
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Patent number: 8029842Abstract: An oxygen-absorbing composition, device, and method for oxygen scavenging in a low moisture environment are provided. The present invention provides an oxygen absorbing composition which includes an oxygen reducing agent, water, a carrier, an electrolyte salt, and a humectant salt, which may be the same as the electrolyte salt, present in an amount sufficient to reduce the water activity of the composition to below 0.6. Also included are methods of using the composition.Type: GrantFiled: March 19, 2007Date of Patent: October 4, 2011Assignee: Multisorb Technologies, Inc.Inventor: Thomas Powers
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Patent number: 8026493Abstract: An apparatus is provided for activating an oxygen scavenging composition that includes a plurality of UV lamps arranged in a bank and disposed in a UV chamber; the UV lamps include first and second sides through which UV light is transmittable. A series of guide rolls disposed in the UV chamber define a film pathway for directing a film in close proximity with the first and second sides of the UV lamps. The UV shade is arranged to wrap about the first and second sides of the UV lamps, and may be configured to move between an open, partially open, and closed position so that the dosage of UV light to which the film is exposed may be controlled by adjusting the degree to which the shade is open. As a result, the UV shade may limit UV exposure without having to turn off the UV lamps.Type: GrantFiled: October 26, 2005Date of Patent: September 27, 2011Assignee: Cryovac, Inc.Inventors: Greg Grossman, Jason G. Verrett, Stephen F. Compton, Scott W. Beckwith
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Patent number: 8017033Abstract: A molded oxygen absorbent composition is composed of a molded product of an oxygen absorbent composition which contains an oxygen absorbing substance, water or moisture, and a swelling component capable of being swelled with water or moisture. The molded oxygen absorbent composition is reduced in its size and excellent in oxygen absorbing property.Type: GrantFiled: October 18, 2006Date of Patent: September 13, 2011Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Ken Sugimoto, Yoshinobu Miyabe, Masaharu Udagawa, Takahiro Seki
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Publication number: 20110218269Abstract: A method of dry coating oxidizable particles with activating particles. The method includes accreting at least portions of the activating particles onto surfaces of the oxidizable particles by mechanically induced juxtapositions to form composite particles; and abrading the composite particles to more evenly distribute the activating component over surfaces of the activating particles.Type: ApplicationFiled: May 18, 2011Publication date: September 8, 2011Applicant: Multisorb Technologies Inc.Inventor: Stanislav E. Solovyov
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Publication number: 20110217430Abstract: The invention relates to an oxygen scavenging material comprising an oxygen scavenger disbursed in a low density foam, wherein the oxygen scavenger has a particle size of less than 25 ?m. In another embodiment the invention relates to a product package comprising a foam tray, product in the tray, and a polymer cover surrounding the meat and tray, wherein the foam tray comprises an oxygen scavenging material, wherein the oxygen scavenging material comprises an oxygen scavenger disbursed in the foam and wherein the oxygen scavenger has a particle size of less than 25 ?m.Type: ApplicationFiled: March 8, 2010Publication date: September 8, 2011Inventors: Chieh-Chun Chau, Samuel A. Incorvia, David S. Payne, Thomas H. Powers, Stanislav E. Solovyov
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Patent number: 8003751Abstract: A polymer with a backbone and an unsaturated side chain attached to the backbone. The polymer may optionally be combined with an oxidation catalyst and/or other ingredients.Type: GrantFiled: December 12, 2008Date of Patent: August 23, 2011Assignee: Valspar Sourcing, Inc.Inventors: Paul E. Share, Keith R. Pillage, Charles I. Skillman, Paul E. Fuchs
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Patent number: 7985456Abstract: Polymer blends are disclosed that comprise one or more polybutadiene homopolymers or copolymers having at least one functionality capable of entering into condensation reactions; one or more polyethylene terephthalate homopolymers or copolymers obtained using a catalyst system comprising aluminum atoms and one or more alkaline earth metal atoms, alkali metal atoms, or alkali compound residues, optionally obtained by a melt-phase polymerization process; and one or more transition metal atoms. The blends are useful for packaging, and exhibit improved oxygen-scavenging activity compared with blends made using many conventional polyethylene terephthalate polymers prepared with conventional catalyst systems.Type: GrantFiled: April 29, 2009Date of Patent: July 26, 2011Assignee: Grupo Petrotemex, S.A. de C.V.Inventors: Mark Edward Stewart, Rodney Scott Armentrout
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Patent number: 7947197Abstract: A deoxidant composition comprising 100 parts by weight of iron powder, 0.01 to 20 parts by weight of metal halide and 0.01 to 5 parts by weight of water repellent agent. The deoxidant composition even when used in a high-humidity atmosphere can maintain oxygen absorption potency. A deoxidant pack for high humidity obtained by wrapping the deoxidant composition without mixing of any inorganic filler by means of an air-permeable packaging material can reduce the apparent volume of deoxidant composition, so that the amount of packaging material used in the production of the deoxidant pack can be reduced.Type: GrantFiled: November 9, 2005Date of Patent: May 24, 2011Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takashi Nakata, Tatsuo Iwai, Takahiro Seki
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Publication number: 20110108764Abstract: The formula of deoxidizer and its process is to penetrate and print a designed pattern such as wood texture on the surface of Wood-Plastic Composite (WPC) product. After the penetrate printing, the precise pattern is permanently seamlessly printed and integrated with the surface of the WPC.Type: ApplicationFiled: November 11, 2009Publication date: May 12, 2011Inventors: Xiaoqiang Guo, Rentian Cao, Wenliang Guo
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Patent number: 7923587Abstract: The present invention relates to macromonomer compounds possessing antioxidant properties, antioxidant polymers comprising the antioxidant macromonomers as a recurring unit, and methods of inhibiting oxidation in a substance comprising contacting the substance with the antioxidant polymers. In one embodiment, substantially all of the recurring macromonomeric units of the antioxidant polymers comprise an antioxidant moiety. In another embodiment, all of the recurring macromonomer units of the antioxidant polymers comprise an antioxidant moiety. The method of the present invention, yields antioxidant polymers with substantially all of the recurring units comprising an antioxidant moiety. These antioxidant polymers have greater bulk antioxidative properties than previously known.Type: GrantFiled: May 28, 2008Date of Patent: April 12, 2011Assignee: Polnox CorporationInventor: Ashok L. Cholli
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Patent number: 7910185Abstract: An oxygen absorbing resin comprising a carbon atom bonded to a carbon to carbon double bond group and further bonded to one hydrogen atom, the carbon atom contained in an alicyclic structure, which oxygen absorbing resin having been exposed to radiation. Further, there is provided an oxygen absorbing resin comprising a carbon atom bonded to both of the structure (a) carbon to carbon double bond group and (b) heteroatom-containing functional group or, as a bonding group derived from the functional group, carbon to carbon double bond group or aromatic ring, and further bonded to one or two hydrogen atoms, the carbon atom contained in an alicyclic structure.Type: GrantFiled: October 20, 2006Date of Patent: March 22, 2011Assignee: Toyo Seikan Kaisha, Ltd.Inventors: Yoichi Ishizaki, Nobuo Hirakawa
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Publication number: 20110045966Abstract: Provided is a cellulosic composite comprised of cellulosic material and a binder. The binder comprises a reaction product of an amine and a reactant in the form of an amino-amide intermediate. To the amino-amide is added an aldehyde or ketone to form a curable binder composition. The composition when mixed with cellulosic material and cured forms a cellulosic composite.Type: ApplicationFiled: August 19, 2009Publication date: February 24, 2011Inventors: Kiarash Alavi Shooshtari, Philip Francis Miele, Jawed Asrar
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Publication number: 20100300905Abstract: An article, such as a polymeric film, sachet, purge control pad, or label, includes a sulfur scavenger. In some embodiments, an oxygen scavenger is also included. A method includes providing an article, including a sulfur scavenger and an oxygen scavenger; and subjecting the article to a dosage of actinic radiation effective to trigger the oxygen scavenger. A method of reducing the sulfur content of a package containing a food product includes either (1) providing a film including a layer including a zinc ionomer, and a layer including an oxygen scavenger; packaging the food product in the film; and storing the package for at least 24 hours; or (2) providing the food product at a temperature of 40° F.; providing a film including a layer including a sulfur scavenger; packaging the food product in the film; and storing the package for at least 24 hours.Type: ApplicationFiled: August 13, 2010Publication date: December 2, 2010Applicant: CRYOVAC, INC.Inventors: Drew V. Speer, Cynthia L. Ebner, Michael D. Grah
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Patent number: 7842361Abstract: The invention aims at providing an oxygen-absorbing resin which has excellent oxygen absorption performance and which can dispense with the addition of a transition metal catalyst or the irradiation with a radiation. The invention provides an oxygen-absorbing resin which is obtained by polymerizing a raw material containing a monomer (A) having an unsaturated alicyclic structure bearing a carbon-carbon double bond wherein one carbon atom adjacent to the carbon-carbon double bond is bonded to an electron-donating substituent and a hydrogen atom and another carbon atom adjacent to the carbon atom is bonded to a heteroatom-containing functional group or a bonding group derived from the functional group with the electron-donating substituent and the functional or bonding group taking cis-configuration and which contains the unsaturated alicyclic structure in an amount of 0.Type: GrantFiled: October 10, 2008Date of Patent: November 30, 2010Assignee: Toyo Seikan Kaisha, Ltd.Inventors: Yoshihiro Ohta, Yoichi Ishizaki
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Publication number: 20100279048Abstract: Polymer blends are disclosed that comprise one or more polybutadiene homopolymers or copolymers having at least one functionality capable of entering into condensation reactions; one or more polyethylene terephthalate homopolymers or copolymers obtained using a catalyst system comprising aluminum atoms and one or more alkaline earth metal atoms, alkali metal atoms, or alkali compound residues, optionally obtained by a melt-phase polymerization process; and one or more transition metal atoms. The blends are useful for packaging, and exhibit improved oxygen-scavenging activity compared with blends made using many conventional polyethylene terephthalate polymers prepared with conventional catalyst systems.Type: ApplicationFiled: April 29, 2009Publication date: November 4, 2010Applicant: Eastman Chemical CompanyInventors: Mark Edward Stewart, Rodney Scott Armentrout
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Publication number: 20100255231Abstract: A well dispersed oxygen scavenging particulate compounded in a polymer matrix. The oxygen scavenging formulation consists of iron powder with a mean particle sizes within 1-25 um and pre-coated with at least one or more activating and acidifying powdered compounds, usually in the form of solid organic and inorganic salts of alkaline and alkaline earth metals such as sodium chloride and sodium bisulfate. The pre-coated iron particulate is dispersed into a polymer resin by using a conventional melt processing method such as twin-screw extrusion. The oxygen scavenging compound is mixed with polymer pellets in the solid state prior to melting. The polymer resin pellets and the coated iron powder are preferably treated with a surfactant in the dry state to help dispersing the iron/salt powder with the resin pellets. The melt extruded compounds are pelletized and kept in the dry state to prevent premature activation.Type: ApplicationFiled: April 1, 2009Publication date: October 7, 2010Applicant: Multisorb Technologies, Inc.Inventors: Chieh-Chun Chau, Thomas H. Powers, Stanislav E. Solovyov
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Patent number: 7807111Abstract: The invention is a method, triggering unit, and system for activating an oxygen scavenging composition at high speeds. The triggering unit includes a plurality of UV lamps that can operate at increased temperatures and have high output intensites from about 10 to 35 mW/cm2. The triggering unit can activate films at speeds from about 20 to 100 fps. Mercury amalgam lamps are useful in the practice of the invention. The invention also includes a UV dose management system and film tensioning system that facilitates triggering at high film speeds. The UV dose management system controls the amount of UV exposure that the film receives so that the oxygen scavenging rate of the activated composition can be controlled.Type: GrantFiled: December 8, 2004Date of Patent: October 5, 2010Assignee: Cryovac, Inc.Inventors: Drew Ve Speer, Paul D. Spence, Gregory E. McDonald, Timothy S. Dennison, Gregory H. Grossman, Csaba F. Kiss, Jason G. Verrett, Charles C. Zende
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Publication number: 20100242725Abstract: An oxygen scavenger is provided. An oxygen scavenger comprises iron, malic acid, and a wicking agent. A method for scavenging oxygen from an enclosed container comprises providing an oxygen scavenger compound comprising iron, malic acid, and a wicking agent, sealing the composition in an oxygen permeable, water impermeable container, and activating the composition by injecting water into the container.Type: ApplicationFiled: March 26, 2009Publication date: September 30, 2010Inventors: Marcus Dukes, John Hart
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Publication number: 20100237283Abstract: An oxygen-scavenging composition is provided that includes an oxygen-scavenging polymer and a catalyst. The oxygen-scavenging polymer, which in preferred embodiments is suitable for use in packaging articles, includes a base polymer having a backbone, and an unsaturated side chain attached to the backbone. In one embodiment, the side chain comprises an unsaturated fatty-acid.Type: ApplicationFiled: August 26, 2008Publication date: September 23, 2010Applicant: VALSPAR SOURCING, INC.Inventors: Richard H. Evans, Jeffrey Niederst, Paul E. Share
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Patent number: 7780869Abstract: An efficient oxygen scavenging composition for use in film forming polymers is disclosed wherein the oxygen scavenging composition comprises an oxidizable metal particle, such as elemental iron; a water hydrolysable Lewis acid, such as aluminum chloride; and an acidifying electrolyte such as sodium or potassium bisulfate.Type: GrantFiled: February 27, 2006Date of Patent: August 24, 2010Assignee: M&G USA CorporationInventors: Kevin L. Rollick, Guliz Arf Elliott
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Patent number: 7781018Abstract: This invention discloses a method of making an oxygen scavenging particle comprised of an activating component and an oxidizable component wherein one component is deposited upon the other component from a vapor phase and is particularly useful when the activating component is a protic solvent hydrolysable halogen compound and the oxygen scavenging particle is a reduced metal.Type: GrantFiled: November 23, 2009Date of Patent: August 24, 2010Assignee: M&G USA CorporationInventor: Kevin L. Rollick