Oxygen Compound Contains A Peroxy Group (-o-o-) Patents (Class 525/387)
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Publication number: 20100324161Abstract: A process for producing thermoplastic vulcanizates, the process comprising (i) dynamically vulcanizing a rubber with a curative in a first stage, where the rubber is within a blend that includes the rubber, a thermoplastic resin, and the curative, where said step of dynamically vulcanizing occurs at a temperature at or above the melting point of the thermoplastic resin, where said step of dynamically vulcanizing employs a peroxide curative, and where said rubber includes polymeric units deriving from 5-vinyl-2-norbornene, (ii) continuing said step of dynamically vulcanizing to cause phase inversion of the blend to thereby convert the thermoplastic resin into a continuous phase, (iii) maintaining the blend at or above the melting point of the thermoplastic resin after the phase inversion, and (iv) introducing molten thermoplastic resin into the blend in a second stage, where said step of introducing molten thermoplastic resin occurs after phase inversion but before the blend is cooled to a temperature below thType: ApplicationFiled: August 5, 2010Publication date: December 23, 2010Inventors: Maria Dolores Ellul, Jianya Cheng
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Patent number: 7851519Abstract: A polyester resin emulsion includes crosslinked polyester resin in an emulsion medium, the crosslinked polyester resin having a degree of crosslinking of from about 0.1 percent to about 100 percent. The emulsion can be formed by solvent flashing a mixture of a polyester resin, an initiator, a solvent, and an emulsion medium, wherein the crosslinked polyester resin has a degree of crosslinking of from about 0.1 percent to about 100 percent.Type: GrantFiled: January 25, 2007Date of Patent: December 14, 2010Assignee: Xerox CorporationInventors: Enno E. Agur, Daryl W. Vanbesien, Valerie M. Farrugia, Guerino G. Sacripante, Maria N. V. McDougall, Edward G. Zwartz
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Patent number: 7842759Abstract: Scorch is inhibited during the free-radical crosslinking of a crosslinkable polymer, e.g., an EPDM, by incorporating into the polymer before melt processing and crosslinking a scorch inhibiting amount of a derivative, preferably an ether, ester or urethane derivative, of a TEMPO compound, e.g., 4-hydroxy-tetrahydrocarbylpiperidin-1-oxyl. The scorch inhibitors of this invention perform as well, if not better, than their 4-hydroxy-tetrahydrocarbylpiperidin-1-oxyl counterparts in similar polymer compositions and under similar conditions in terms of scorch inhibition and ultimate degree of crosslinking, but exhibit less volatility and less migration within the polymer composition.Type: GrantFiled: November 10, 2008Date of Patent: November 30, 2010Assignee: Dow Global Technologies Inc.Inventors: Mohamed Esseghir, Bharat I. Chaudhary, Jeffrey M. Cogen, John Klier, Jinder Jow, Robert F. Eaton, Suzanne M. Guerra
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Patent number: 7825059Abstract: Process to prepare a trioxepane compound of the following formula (I) comprising less than 3.5 wt % of dialkyl peroxide based on the total amount of peroxides, said process comprising the steps of reacting a glycol compound of the formula R3CHOH—CH2—C(CH3)2OH with hydrogen peroxide in the presence of an acid to form a glycol hydroperoxide, purifying the glycol hydroperoxide, reacting the purified glycol hydroperoxide with a ketone or aldehyde of the formula R1R2CO in the presence of an acid to form the trioxepane compound, and purifying the trioxepane compound, wherein R1, R2, and R3 are independently selected from hydrogen and a substituted or unsubstituted hydrocarbyl group, with the proviso that if R1 and R2 are both methyl groups, R3 is not hydrogen. Initiator compositions comprising the so-prepared trioxepane compound are characterized by a high safe processing temperature in combination with a good crosslink efficiency.Type: GrantFiled: September 27, 2005Date of Patent: November 2, 2010Assignee: Akzo Nobel N.V.Inventors: John Meijer, Leonardus Bernardus Gerhardus Maria Nijhof, Herman Evert Roelofs, Haimo Tonnaer, Roelof Van De Worp
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Publication number: 20100273945Abstract: The invention relates to a new polymer blend comprising: 20 to 70 wt % of a mixture (A) of two or more polyalkylene phthalates; 2 to 60 wt % of a cross-linked acrylate rubber; 0.5 to 20 wt % of an ionomer; and 1 to 30 wt % of a terpolymer of ethylene, butylacrylate (BA) and glycidylmethacrylate (GMA); wherein the weight percentages are based on the sum of the above ingredients. The polymer blend of the invention is particularly suitable for blow-moulding, to make parts for high-temperature, high-oil-exposure uses.Type: ApplicationFiled: July 7, 2009Publication date: October 28, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Serge Cavalli, Vincent Decombes, Philippe Leboeuf, Jean-Michel Philippoz, Michel C. Renaud
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Patent number: 7807755Abstract: This invention provides a method for removing certain sulfur-containing groups from polymers, especially those made via RAFT polymerization processes.Type: GrantFiled: May 11, 2005Date of Patent: October 5, 2010Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: William Brown Farnham, Graeme Moad, San Hoa Thang, Ezio Rizzardo, Michael Fryd
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Patent number: 7807750Abstract: A thermally-reactive polymer that forms a polymer-coupled reactive species upon heating is described and useful for forming coated surfaces. The polymer-coated surface has improved lubricity and passivity. A thermally-reactive quaternary amine-containing polymer was produced that provides passivity and anti-microbial activity.Type: GrantFiled: September 17, 2004Date of Patent: October 5, 2010Assignee: SurModics, Inc.Inventors: Kristin S. Taton, Patrick E. Guire
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Publication number: 20100233580Abstract: It is an object of the present invention to provide a fluororubber composition for cell seals of fuel cells, which can improve quality, productivity, etc. of a cell seal of a fuel cell by crosslinking a burr formed by an air vent area in the molding process for producing a cell seal of a fuel cell and thereby preventing separation of a fuel cell gasket. The fluororubber composition for cell seals of fuel cells of the present invention comprises a peroxide-crosslinkable fluorine-containing rubber (A) having a fluorine content of not less than 64% by weight and having a crosslinking site derived from a bromine-containing and/or iodine-containing compound, an organic peroxide (B) in an amount of 0.Type: ApplicationFiled: October 23, 2008Publication date: September 16, 2010Inventor: Takayuki Kashihara
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Patent number: 7786205Abstract: A foamable copolymer based coupling is provided for securely affixing a light emitting glass lamp in a metal base to form a lamp assembly. The copolymer is preferably selected from ethylene vinyl acetate, ethylene methyl acrylate, and combinations thereof. The foamable coupling may be placed around one end of the glass lamp or in the lamp base before the lamp and base are matingly engaged. The assembled lamp is then heated to a temperature, which causes the foamable coupling to expand and securely affix the lamp in the base.Type: GrantFiled: March 26, 2007Date of Patent: August 31, 2010Assignee: Tyco Electronics CorporationInventors: Ashok Mehan, Daniel A. Chandler, Erling Hansen, Rene J. Revueltas, Stephen P. Tordoff, Bryan P. Williams
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Patent number: 7781508Abstract: A rubber composition, which comprises 100 parts by weight of an ethylene-alkyl acrylate copolymer rubber, 5-40 parts by weight of EPDM, 1-40 parts by weight of an ?-olefin oligomer, 0.5-4 parts by weight of an organic peroxide cross-linking agent, 0.5-4 parts by weight of an amine-based vulcanizing agent, and 300-1,000 parts by weight of magnetic powder. The rubber composition is a rubber composition filled a magnetic powder at a high packing density, where an ethylene-alkyl acrylate copolymer rubber having amine vulcanizable groups as a binder, and effectively usable in rubber-bonded sensor magnets, etc., without any foaming at the time of vulcanization molding and with distinguished processabilities such as mold releasability, etc.Type: GrantFiled: June 6, 2006Date of Patent: August 24, 2010Assignee: NOK CorporationInventors: Eiji Komiya, Shiro Hirose
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Publication number: 20100204409Abstract: In one embodiment herein there is provided a composition comprising (i) one or more unsaturated silane compounds according to the Formula (1): G1R1SiX1X2??(1) wherein G1 is an olefinically unsaturated hydrocarbon group optionally heteroatom-substituted with one or more oxygen and/or nitrogen atoms; R1 is selected from the group consisting of alkyl, aryl, aralkyl and arenyl; each of X1 and X2 is independently a hydrolyzable group or alternatively each of X1 and X2 is a hydrolyzable group having a direct bond to the silicon atom and also simultaneously a direct bond to each other to form a ring with the silicon atom of the unsaturated silane of Formula (1); and (ii) a system of at least two peroxides comprising a first peroxide having a first 0.1 hour half-life temperature and a second peroxide having a second 0.1 hour half-life temperature, the first and second 0.1 hour half-life temperatures in said composition having a temperature differential of at least about 5° C.Type: ApplicationFiled: March 16, 2010Publication date: August 12, 2010Applicant: MOMENTIVE PERFORMANCE MATERIALS INC.Inventor: Eric R. Pohl
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Publication number: 20100197822Abstract: A method for forming reduced creep high molecular weight polyethylene articles, involves irradiating a high molecular weight polyethylene fiber or block, where the polyethylene is polycrystalline with a preferred crystal orientation. The fiber or block is irradiated in an environment including a molecule with a dual reactive functionality to provide cross-linking in the amorphous regions and/or on the surface and an inert gas at a temperature that is below an average alpha transition temperature of the polyethylene. The irradiation can be carried out on a polyethylene fiber by drawing a fiber through a solution containing a grafting agent that can include a molecule with a dual reactive functionality to primarily apply and cross-link the grafting material to the surface of the fiber. The resulting high molecular weight polyethylene article is highly cross linked and includes a plurality of substantially aligned crystals, the article providing an X-ray diffraction pattern evidencing only 2 sharp reflections.Type: ApplicationFiled: December 1, 2006Publication date: August 5, 2010Inventors: Anthony B. Brennan, Christopher D. Batich
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Publication number: 20100181095Abstract: The invention relates to a method for modifying a polymer composition, to modified polymer compositions, to an article, preferably wire or cable, including said modified polymer composition, to a process for preparing an article, preferably a wire or cable, to the use of said modified polymer in one or more layers of a wire or cable, as well as to a compound for use as a radical generating agent for modifying a polymer composition.Type: ApplicationFiled: July 10, 2008Publication date: July 22, 2010Applicant: BOREALIS TECHNOLOGY OYInventors: Annika Smedberg, Bill Gustafsson, Daniel Nilsson
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Publication number: 20100181096Abstract: The application relates to a method for modifying a polymer composition, to modified polymer compositions, to an article, preferably wire or cable, including said modified polymer composition, to a process for preparing an article, preferably a wire or cable, to the use of said modified polymer in one or more layers of a wire or cable, as well as to a compound for use as a radical generating agent for modifying a polymer composition.Type: ApplicationFiled: July 10, 2008Publication date: July 22, 2010Applicant: BOREALIS TECHNOLOGY OYInventors: Annika Smedberg, Bill Gustafsson, Daniel Nilsson
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Patent number: 7750086Abstract: A process for improving the melt characteristics of propylene-ethylene random block and impact copolymers is provided. The process involves contacting a powder of the copolymer with a low level of free radical initiator followed by heating at a temperature below the melting point of the copolymer and above the free radical initiation temperature.Type: GrantFiled: February 27, 2006Date of Patent: July 6, 2010Assignee: Equistar Chemicals, LPInventors: Andrew J. Scheie, Manivakkam J. Shankernarayanan
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Patent number: 7745530Abstract: The present invention provides an aqueous emulsion resin composition which comprises: (a) a resin composition containing at least one fluoroolefin polymer having crosslinkable group(s) at a terminus and/or a side chain of its molecule and at least one non-fluoroolefin polymer having crosslinkable group(s) at a terminus and/or a side chain of its molecule; and (b) at least one curing agent selected from the group consisting of isocyanates, melamines, hydrazides, carbodiimides, silanes and epoxides; and provides an aqueous emulsion resin compositions containing at least one chemically bonded product of a fluoroolefin polymer and a non-fluoroolefin polymer bonded to each other via at least one covalent bond at a terminus and/or a side chain of the molecules wherein one or both of the fluoroolefin polymer and the non-fluoroolefin polymer have crosslinkable group(s).Type: GrantFiled: June 28, 2002Date of Patent: June 29, 2010Assignee: Daikin Industries, Ltd.Inventors: Nobuo Mitsuhata, Tsunehiko Fuwa, Susumu Wada, Keiko Kunimasa, Haruhiko Mohri, Nobuo Fukita
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Patent number: 7745544Abstract: Disclosed are processes for preparing an epoxidized and/or hydroxylated ?-olefin/diene copolymer materials such as ethylene/dicyclopentadiene. These processes comprise contacting in a reaction medium a) a copolymeric precursor component with b) a hydrogen peroxide oxidizing agent, in the presence of alkyl-trioxorhenium-based catalyst, under certain reaction conditions. The copolymeric precursor component comprises copolymers of ?-olefins and dienes with these copolymers containing at least one double bond in each diene-derived comonomer. The reaction medium is maintained under reaction conditions which promote formation of oxirane rings at, and/or diol formation across, the sites of the diene-derived co-monomer double bonds in the copolymeric precursor material. Epoxidation and hydroxylation generally increases the glass transition temperature, Tg, of these copolymers and imbues polarity which imparts oil resistance.Type: GrantFiled: November 30, 2006Date of Patent: June 29, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventor: Abhimanyu Onkar Patil
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Patent number: 7741410Abstract: A process is described for epoxidizing an ethylenically unsaturated isobutene polymer, in which an organic phase comprising the isobutene polymer is contacted with an aqueous phase which comprises formic acid and hydrogen peroxide. The process affords essentially quantitative conversions after a short reaction time.Type: GrantFiled: August 28, 2006Date of Patent: June 22, 2010Assignee: BASF AktiengesellschaftInventors: Hans Peter Rath, Arno Lange, Helmut Mach, J. Richard Blackborow
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Patent number: 7705098Abstract: Chemically crosslinked polycyclooctene having excellent shape recovery properties is prepared by ring-opening metathesis polymerization of cis-cyclooctene followed by chemical crosslinking. The crosslinked polycyclooctene can be shaped, the shape memorized, a new shape imparted with the original shape being recoverable by suitable temperature adjustment. The dependence of shape memory characteristics on degree of crosslinking was established. In addition to polycyclooctene, blends thereof with other materials such as SBR, EVA, polyurethane rubbers, and inorganic fillers can be utilized to provide chemically crosslinked products having excellent and tailored shape memory properties.Type: GrantFiled: June 9, 2009Date of Patent: April 27, 2010Assignee: University of ConnecticutInventors: Patrick T. Mather, Changdeng Liu, Seung B. Chun, E. Bryan Coughlin
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Publication number: 20100076160Abstract: A method of modifying a tubular low density polyethylene (LDPE) is disclosed. In the method ethylene is polymerized with a free radical initiator in a high pressure reactor to form an LDPE. The LDPE is then reacted with a free radical initiator to produce a modified polyethylene. The modified polymer has an increased long chain branching index as indicated by the increase in the gel permeation chromatography branching index.Type: ApplicationFiled: September 23, 2008Publication date: March 25, 2010Inventors: Debra L. Beran, Mark P. Mack, Anil W. Saraf
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Patent number: 7683134Abstract: A process for the manufacture of maleated polypropylenes having an acid number greater than 6, a yellowness index color of no greater than 76, and a number average molecular weight of at least 20,000. The process for making the maleated polypropylenes includes forming a mixture of molten polypropylene and molten maleic anhydride in a reactor, introducing a free radical initiator into the molten mixture to produce a product having maleic anhydride grafted onto the polypropylene, and recovering a high acid number, high molecular weight maleated polypropylene of low color from the reactor.Type: GrantFiled: July 21, 2008Date of Patent: March 23, 2010Assignee: Eastman Chemical CompanyInventors: Thomas David Roberts, Stephen Wayne Coe
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Patent number: 7659349Abstract: Degraded polypropylene (co)polymer modified with a linear dialkylperoxide in order to retain its impact strength and a process for its preparation.Type: GrantFiled: April 10, 2006Date of Patent: February 9, 2010Assignee: Total Petrochemicals Research FeluyInventor: Kristien Roegiers
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Patent number: 7652105Abstract: A hydroxyl-modified ethylene-?-olefin copolymer with excellent coating properties and adhesion properties are produced by heating a mixture containing 100 parts by weight of an ethylene-?-olefin copolymer and 0.1 to 20 parts by weight of a peroxide having a hydroperoxy group. The heating temperature is adjusted within a range from the 10-hour half-life temperature to the 1-minute half-life temperature of the peroxide.Type: GrantFiled: December 25, 2003Date of Patent: January 26, 2010Assignee: NOF CorporationInventors: Yasumasa Watanabe, Tomoyuki Nakamura, Hiroshi Okada
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Publication number: 20100016515Abstract: The instant invention is a crosslinkable polyethylene composition, a method of making the same, and articles made therefrom. The crosslinkable polyethylene composition according to instant invention includes a polyethylene component, a crosslinking agent, and a crosslinking coagent. The crosslinking agent is an organic peroxide, and the crosslinking coagent is an alkadiene, alkatriene, or alkatetraene compound comprising at least two terminal carbon-carbon double bonds. The crosslinkable polyethylene composition may, optionally, further include a scorch inhibitor, a cure booster, a stable free radical, one or more conventional additives, blends thereof, and/or combinations thereof.Type: ApplicationFiled: January 25, 2008Publication date: January 21, 2010Inventors: Bharat I. Chaudhary, John Klier
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Patent number: 7645833Abstract: Novel crosslinkable compositions based on elastomers, at least one of which has carboxyl and/or carboxylate groups, are provided, these crosslinkable compositions containing special unsaturated organic salts of metal ions and a crosslinking system which acts as a free radical donor. Crosslinked elastomers which have excellent physical properties are obtainable therefrom. The novel crosslinkable compositions have a wide range of uses.Type: GrantFiled: September 25, 2006Date of Patent: January 12, 2010Assignee: LANXESS Deutschland GmbHInventors: Dirk Achten, Claus Wrana, Christopher Ong, Martin Mezger, Hans Magg, Jürgen Ismeier, Hans-Rafael Winkelbach
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Patent number: 7632894Abstract: A process for cross-linking an elastomer-containing thermoplastic polyolefin composition comprising the steps of preparing a masterbatch by mixing and/or masticating an elastomeric polyolefin with a cross-linking co-agent, and optionally an additive, in the presence of a thermoplastic polyolefin; then, cooling the masterbatch obtained in the preceding step at least up to the solidification of the thermoplastic polyolefin; and finally mixing and/or masticating the masterbatch, after the cooling step, with a cross-linking agent and optionally an additive.Type: GrantFiled: May 29, 2002Date of Patent: December 15, 2009Assignee: Basell Poliolefine Italia s.r.l.Inventors: Dino Bacci, Roberta Marchini, Carlo Mulas
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Patent number: 7622534Abstract: A process for preparing an epoxidized ?-olefin/diene copolymer including the steps of contacting in a reaction medium a) copolymers of an ?-olefin and a diene, which copolymers contain at least one double bond in each diene-derived co-monomer, with b) a hydrogen peroxide epoxidizing agent, in the presence of a perfluorinated alcohol reaction solvent, and in the absence of any metal-containing epoxidation catalyst, under reaction conditions which promote formation of oxirane rings at the sites of the diene-derived co-monomer double bonds in the copolymeric precursor material.Type: GrantFiled: November 30, 2006Date of Patent: November 24, 2009Assignee: Exxonmobil Chemical Patents Inc.Inventors: Abhimanyu Onkar Patil, Karla Schall Colle
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Publication number: 20090247690Abstract: Crosslinkable compositions based on polyamide and on ?-olefin-vinyl acetate copolymers, where the compositions comprise a crosslinking initiator, and also a co-crosslinking agent, and crosslinkable compositions based on polyamides and on ?-olefin-vinyl acetate copolymers, where these compositions comprise a crosslinking initiator and the amount of polyamide in the compositions is <30% by weight. The present invention further relates to the preparation of the crosslinkable compositions of the invention, to the use of the crosslinkable compositions of the invention for the production of thermoplastic elastomers, to a process for the crosslinking of the compositions of the invention to give a thermoplastic elastomer, and also to the thermoplastic elastomers themselves and to their use for the production of mouldings.Type: ApplicationFiled: February 27, 2009Publication date: October 1, 2009Applicant: LANXESS Deutschland GmbHInventors: Kay Varnhorn, Jorg Mertinkat
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Patent number: 7592386Abstract: Provided is a curable fluoropolymer composition comprising a fluoropolymer comprising interpolymerized units of tetrafluoroethylene, perfluoro(aliphatic vinyl)ether, and a nitrogen-containing cure site monomer; a catalyst to form cross-links with the nitrogen-containing cure site monomer; an organic peroxide; a co-agent to participate in a peroxide cure; and a hydrotalcite compound. Also provided is an article comprising the cured fluoropolymer reaction product of the curable composition and a method for forming a shaped article.Type: GrantFiled: November 20, 2006Date of Patent: September 22, 2009Assignee: 3M Innovative Properties CompanyInventors: Werner M. A. Grootaert, Robert E. Eggers
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Patent number: 7579412Abstract: The present invention relates to a process for preparing carboxyl-terminated polyisobutenes by ozonolysis of polyisobutenes terminated by an ethylenically unsaturated double bond.Type: GrantFiled: May 14, 2004Date of Patent: August 25, 2009Assignee: BASF AktiengesellschaftInventors: Arno Lange, Helmut Mach, Hans Peter Rath, Ulrich Karl, Bela Ivan, Peter Werner Groh, Zsuzsanna Tamara Nagy, Viktoria Palfi
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Publication number: 20090171000Abstract: An EPDM composition, which comprises 100 parts by weight of EPDM having an ethylene content of 50-58 wt. %, and a Mooney viscosity ML1+4 (100° C.) of 10-48, and 0.2-4.0 parts by weight of an organic peroxide as a cross-linking agent, has a distinguished blister resistance in a mixed state of chlorofluorocarbon gas/refrigerator oil, which has been a problem in practical use, and a distinguished moldability, as a rubber material for molding sealing materials for chlorofluorocarbon refrigerant including R134a. Sealing materials made from the EPDM composition by vulcanization-molding can provide EPDM-made sealing materials having less permeation leakage amount of chlorofluorocarbon refrigerant than that of hydrogenated NBR so far used as sealing materials in shaft sealing devices in compressors of automobile air conditioners.Type: ApplicationFiled: June 21, 2006Publication date: July 2, 2009Inventors: Takashi Amemiya, Osamu Kobayashi
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Publication number: 20090171034Abstract: This invention relates to the use of a cyclic ketone peroxide of half-life time larger than one second at a temperature of 225 ° C., for producing a controlled rheology polypropylene heterophasic copolymer of melt index MI2 larger than 15 g/10 min, having simultaneously a very high impact resistance and a high flexural modulus.Type: ApplicationFiled: March 3, 2009Publication date: July 2, 2009Applicant: TOTAL PETROCHEMICALS RESEARCH FELUYInventors: Philippe VanDeurzen, Lisa K. Albe, William Wheat, Michel Daumerie
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Patent number: 7553802Abstract: A process is described to modify the rheology of EP(D)M copolymers optionally mixed with polyalpha-olefins, which comprises treating in high shear conditions a polymeric mixture comprising one or more EP(D)M polymers, optionally mixed with polyalpha-olefins, in presence of one or more vinyl multifunctional monomers and of one or more hydroperoxides, with the amount of vinyl multifunctional monomer comprised between 0.02 and 2.0 by weight, preferably between 0.05 and 1% by weight, with the molar ratio between the vinyl monomer and hydroperoxide being comprised between 0.005/1 and 2/1, preferably between 0.01/1 and 1/1, said process being performed at a temperature between 75° C. and 260° C., preferably between 140° C. and 210° C.Type: GrantFiled: April 7, 2005Date of Patent: June 30, 2009Assignee: Polimeri Europa S.p.A.Inventor: Tiziano Tanaglia
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Publication number: 20090156750Abstract: This invention relates to unsaturated polyester resin or vinyl ester resin compositions comprising a polymer containing reactive unsaturations as a resin; a 1,3-dioxo-component, and optionally a reactive diluent and/or an inhibitor and/or a stabilizer; the resin compositions being curable with a peroxide component, and wherein the resin in the resin composition has an acid value=10; and the resin composition contains—while being cured—a base, which is either selected from the group of organic or inorganic oxides, hydroxides, alkoxides or carboxylates for each of which the cation has a redox potential of the metal of at most ?1V, or of ammonium ions; or is selected from the group of nitrogen-containing organic compounds. The present invention also relates to objects and structural parts prepared from such resin composition by curing with a peroxide.Type: ApplicationFiled: June 6, 2006Publication date: June 18, 2009Applicant: DSM IP ASSETS B.V.Inventors: Johan Franz Gradds Antonius Jansen, Ivo Ronald Kraeger
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Publication number: 20090131590Abstract: This invention provides methods to form modified hydrogel materials using reactive compounding. The method includes mixing a hydrogel material with a plasticizer in a compounding apparatus. During mixing, a reactive chemical compound is added to the mixture that reacts with the hydrogel material to form a modified hydrogel material.Type: ApplicationFiled: November 16, 2007Publication date: May 21, 2009Applicant: ZIMMER, INC.Inventors: Brian H. Thomas, Donald L. Yakimicki, Steven Charlebois
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Publication number: 20090105424Abstract: A dip-forming latex composition comprising a conjugated diene rubber latex and an organic peroxide, wherein the residual effective activity of organic peroxide defined as the ratio of organic peroxide retaining reactivity to the whole organic peroxide contained in the latex composition is 35% or higher. The invention provides a dip-formed article, which exhibits good softness of touch and comfortable fittingness and excellent in tensile strength and resistance to flexing fatigue; which itself hardly suffers coloration especially when the article thereof is worn as a glove for continuous operation for a long time and is hard to reduce adhesiveness and following characteristics to hand while wearing it; and a dip-forming latex composition capable to give such an article by dip-forming thereof.Type: ApplicationFiled: May 18, 2006Publication date: April 23, 2009Applicant: ZEON CORPORATIONInventors: Kazumi Kodama, Shinji Kato
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Publication number: 20090099317Abstract: A multicomponent system is provided, composed of a thermoplastic component and of a rubber component, which comprises at least two different peroxidic crosslinking agents with specific decomposition temperatures, as also is a process for production of rubber-thermoplastic composite mouldings using the multicomponent system, and also the resultant rubber-thermoplastic composite mouldings.Type: ApplicationFiled: December 15, 2006Publication date: April 16, 2009Inventors: Dirk Achten, Stefanie Nickel, Maik Schulte, Michael Munker, Detlev Joachimi
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Patent number: 7514506Abstract: Compositions including at least one curable fluoropolymer are disclosed which include at least one functional group for crosslinking the fluoropolymer, a curative capable of crosslinking the at least one fluoropolymer selected from the group consisting of functionalized biphenyl-based compounds, various monoamidine and monoamidoxime compounds as well as bisamidine compounds and combinations thereof; and at least one cure accelerator which may be an organic peroxide or an organic peroxide in combination with a colorant. Adhesive fluoroelastomeric compositions comprising colorants are also provided. The compositions described provide beneficial physical properties, increased plasma resistance, unique adhesive properties and/or reduced contamination associated with use of external adhesives. Methods for forming articles which incorporate fluoroelastomers bonded to metallic surfaces are also provided.Type: GrantFiled: March 28, 2005Date of Patent: April 7, 2009Assignee: Greene, Tweed of Delaware, Inc.Inventors: Corinne A. Mansfield, James W. Hughes, Eugene Gurevich, Brian Ux, Carmin Quartapella
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Publication number: 20090075078Abstract: An acid-modified polyolefin-based resin for glass fiber treatment having: (1) an amount of components extractable with boiling methyl ethyl ketone of 8 mass % or less; (2) a number average molecular weight (Mn), measured by gel permeation chromatography (GPC), of 6,000 to 48,000; and (3) an amount of an acid which has been added, measured by Fourier transform infrared spectroscopy, of 0.1 to 12 mass %.Type: ApplicationFiled: October 20, 2005Publication date: March 19, 2009Applicant: PRIME POLYMER CO., LTD.Inventors: Koki Yano, Rikuo Onishi
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Publication number: 20090065737Abstract: The use of nitroxides to control free radical cured resin systems used in the production of thermosetting materials such as bulk molded compositions, sheet molded compositions, and pultrusions is disclosed. The invention could also be employed in other resin systems where control of kinetics would be desirable such as in adhesive formulations, in solid surface composites, and certain types of polyester casting resins.Type: ApplicationFiled: September 11, 2007Publication date: March 12, 2009Applicant: Arkema Inc.Inventors: Michael O. Wells, Scott C. Schmidt
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Publication number: 20090068483Abstract: To provide an acid-modified polypropylene resin which can be used for an adhesive capable of bonding a polyolefin type resin and a polar resin with sufficient force, its production process and a resin composition using it. An acid-modified polypropylene resin, which is obtained by grafting an organic acid component to a polypropylene resin, wherein the polypropylene resin is an isotactic polypropylene resin, the grafted amount X (wt %) of the organic acid component in the acid-modified polypropylene resin is within a range of from 1.0 wt % to 20.0 wt %, and the melt flow rate Y (g/10 min) of the acid-modified polypropylene resin satisfies the expression: Y?18.5 exp(0.82X), a process for producing such an acid-modified polypropylene resin, a resin composition using it and a laminate.Type: ApplicationFiled: April 28, 2006Publication date: March 12, 2009Applicant: Mitsubishi Chemical CorporationInventors: Kenichi Morikawa, Katsutoshi Ohno
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Patent number: 7482408Abstract: Elastomeric blends are described, comprising an elastomeric composition and carbon black, the above elastomeric composition consisting of: (i) one or more elastomers (A) selected from ethylene-propylene (EPM) copolymers and ethylene-propylene-diene (EPDM) terpolymers; (ii) one or more elastomers (B) selected from ethylene-propylene (EPM) copolymers and ethylene-propylene-diene (EPDM) terpolymers and relative mixtures, the above elastomers having been previously treated with at least one hydroperoxide at a temperature ranging from 80° C. to 250° C. so as to undergo a reduction in the molecular weight: the weight ratio between the elastomers (i) and (ii), having a sum of 100, being from 0/100% to 90/10%.Type: GrantFiled: December 20, 2004Date of Patent: January 27, 2009Assignee: Polimeri Europa S.p.A.Inventor: Tiziano Tanaglia
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Publication number: 20090023867Abstract: The present invention provides a process for producing an encapsulating material for solar cell which makes high-speed crosslinking possible and causes no blister phenomenon without significant restrictions being imposed on the conditions for molding the encapsulating material. The present invention provides a process for producing the encapsulating material for solar cell including impregnating a molded form of an ethylene copolymer with an organic peroxide in a liquid state at normal temperature which shows a decomposition temperature (a temperature at which the half-life period is one hour) of not higher than 150° C. A process for producing the encapsulating material for solar cell in which dialkyl peroxide (A) and an organic peroxide (B) selected from peroxycarbonate and peroxyketal at a ratio by weight of 10/90 to 90/10 of (A) and (B) in a liquid state impregnate the molded form of the ethylene copolymer is a preferable embodiment of the present invention.Type: ApplicationFiled: February 10, 2006Publication date: January 22, 2009Inventors: Koichi Nishijima, Manabu Kawamoto, Rie Sato, Tetsuya Nakamura
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Publication number: 20090018274Abstract: A method for the manufacture of an adhesive id described, comprising: (A) Providing an initial reaction product of a solution polymerization reaction, the initial reaction product comprising polymer, unreacted polymerizable reactant, non-poly-merizable material, and solvent; and (B) Purifying the initial reaction product by adding an oxidizing agent and a reducing agent to the initial reaction product and allowing the unreacted polymerizable reactant in the initial reaction product to further react, thereby providing a second reaction product comprising additional polymer and a lower level of unreacted polymerizable reactant than was present in the initial reaction product.Type: ApplicationFiled: September 21, 2006Publication date: January 15, 2009Inventors: Dong-Wei Zhu, Cheryl L. Moore, James T. Wolter
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Patent number: 7473742Abstract: Novel additive systems for lead-free filled cable insulation are disclosed. These systems provide improved electrical and mechanical properties. The base polymer may be metallocene based, non metallocene based or combinations thereof. The additives may contain one or more hindered amine light stabilizers, mercapto compounds, and optionally, amine antioxidants.Type: GrantFiled: October 25, 2006Date of Patent: January 6, 2009Assignee: General Cable Technologies Corp.Inventor: Mark R. Easter
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Patent number: 7465769Abstract: Scorch is inhibited during the free-radical crosslinking of a crosslinkable polymer, e.g., an EPDM, by incorporating into the polymer before melt processing and crosslinking a scorch inhibiting amount of a derivative, preferably an ether, ester or urethane derivative, of a TEMPO compound, e.g., 4-hydroxy-tetrahydrocarbylpiperidin-1-oxyl. The scorch inhibitors of this invention perform as well, if not better, than their 4-hydroxy-tetrahydrocarbylpiperidin-1-oxyl counterparts in similar polymer compositions and under similar conditions in terms of scorch inhibition and ultimate degree of crosslinking, but exhibit less volatility and less migration within the polymer composition.Type: GrantFiled: October 9, 2006Date of Patent: December 16, 2008Assignee: Dow Global Technologies Inc.Inventors: Mohamed Esseghir, Bharat I. Chaudhary, Jeffrey M. Cogen, John Klier, Jinder Jow, Robert F. Eaton, Suzanne M. Guerra
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Patent number: 7442746Abstract: The present invention is directed to a process for synthesizing an epoxidized polymer that includes the steps of: (1) preparing a cationically stabilized polymer latex containing at least one conjugated diolefin monomer in a first stage, (2) treating the polymer latex from step (1) with formic or acetic acid and hydrogen peroxide, and (3) allowing the mixture to react for a predetermined time and predetermined temperature to attain the desired level of epoxidation.Type: GrantFiled: October 19, 2006Date of Patent: October 28, 2008Assignee: The Goodyear Tire & Rubber CompanyInventor: Dane Kenton Parker
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Publication number: 20080251195Abstract: Activated anaerobically curable adhesive compositions are prepared by exposing anaerobic adhesive compositions containing a strong acid precursor, especially a sulfonium salt, to UV light for up to 20 seconds.Type: ApplicationFiled: April 10, 2007Publication date: October 16, 2008Inventors: Bernard M. Malofsky, Adam G. Malofsky, Lisa M. Fine
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Patent number: 7417093Abstract: In a process for functionalizing an ?-olefin/diene copolymer, a copolymer comprising units derived from at least one ?-olefin and units derived from at least one diene, which copolymer contains at least one double bond, is contacted in a reaction medium with an alkyl hydroperoxide in the presence of a catalyst comprising a metal of Group 5 or 6 of the Periodic Table or a compound thereof, under reaction conditions which promote formation of an oxirane ring or hydroxyl groups at the site of the double bond.Type: GrantFiled: May 21, 2007Date of Patent: August 26, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Karla S. Colle, Caiguo Gong, Kevin R. Squire
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Patent number: RE41784Abstract: The adhesive material contains a radical-polymerizable compound, a curing agent, and a thermoplastic resin; gives a negative result of the Ames test; and has a PII, or skin irritation, value of 2 or less. In particular, all the starting ingredients should preferably give a negative result of the Ames test and have a PII, or skin irritation, value of 2 or less.Type: GrantFiled: December 3, 2007Date of Patent: September 28, 2010Assignees: Sony Corporation, Sony Chemical & Information Device CorporationInventor: Tomoyuki Ishimatsu