Carbon And Hyrogen Only Patents (Class 522/125)
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Patent number: 10688743Abstract: A method for reducing the stickiness on the surface exposed to the air of a sealant layer applied on an inner cavity of a tyre. The method establishes that the surface exposed to the air of the sealant layer is subject to a UV radiation.Type: GrantFiled: December 2, 2016Date of Patent: June 23, 2020Assignee: BRIDGESTONE CORPORATIONInventors: Giuseppe Pezzullo, Marco Bruni, John Nazareno House
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Patent number: 8889239Abstract: The present invention is concerned with the process for preparing a cross-linked stabilized polymer composition using at least one graftable polymer stabilizer, and the subsequent use of that composition for forming pipes, for example PEX pipes. The graftable stabilizer becomes anchored to the polymer such that stabilizer activity is retained in the cross-linked product. Cross-linking can be achieved by conventional processes such as PEXa, PEXb and PEXc. Embodiments demonstrate excellent levels of antioxidant retention (as measured by oxidative induction retention after exhaustive solvent extraction) and the cross-linked product are suitable for portable water applications, including hot water applications.Type: GrantFiled: January 28, 2011Date of Patent: November 18, 2014Assignee: Aston UniversityInventors: Sahar Al-Malaika, Cezary Lewucha
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Publication number: 20130197121Abstract: A method for making a crosslinked polymeric material for use in an orthopaedic device is described. The method may include the use of one or more crosslinking enhancers to enhance the crosslinking process.Type: ApplicationFiled: April 26, 2012Publication date: August 1, 2013Inventors: Richard S. King, Mark D. Hanes, Fu-wen Shen, Venkat Narayan
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Patent number: 8431065Abstract: Methods for making a crosslinked elastomeric composition and articles made of the same are provided. In at least one specific embodiment, an elastomeric composition comprising at least one propylene-based polymer is blended with at least one component selected from the group consisting of multifunctional acrylates, multifunctional methacrylates, functionalized polybutadiene resins, functionalized cyanurate, and allyl isocyanurate; and blended with at least one component selected from the group consisting of hindered phenols, phosphites, and hindered amines. The propylene-based polymer can include propylene derived units and one or more dienes, and have a triad tacticity of from 50% to 99% and a heat of fusion of less than 80 J/g. The blended composition can then be extruded and crosslinked. The extruded polymer can be crosslinked using electron beam radiation having an e-beam dose of about 100 KGy or less. The crosslinked polymers are particularly useful for making fibers and films.Type: GrantFiled: April 13, 2012Date of Patent: April 30, 2013Assignee: ExxonMobil Chemical Patents Inc.Inventor: Sunny Jacob
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Patent number: 8372894Abstract: A method for producing a graft polymer comprises the steps of: a) irradiating a base polymer with an electron beam or a source of ?-radiation, b) contacting a grafting solution with the base polymer, wherein the grafting solution contains at least one oxygen scavenger and at least one graft monomer selected from the group consisting of styrene and styrene derivatives, and c) graft polymerizing the mixture of the base polymer and the grafting solution obtained in step b).Type: GrantFiled: February 23, 2009Date of Patent: February 12, 2013Assignee: Belenos Clean Power Holding AGInventor: Dirk Henkensmeier
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Patent number: 8299139Abstract: This invention relates to a process for producing high molecular weight (HMW) and ultra-high molecular weight (UHMW) acrylic polymers having unique polymer tacticity and exhibiting enhanced thermal and mechanical properties. This process comprises polymerizing ethylenically unsaturated monomer in the presence of a free radical initiator that results in a “living-like polymer” utilizing a multi-step approach. In conducting the process of this invention the “living-like polymer” is further dissolved in a liquid carrier, wherein the said liquid carrier is a reactive diluent that can be reacted subsequently by an addition polymerization process to create a block- or multi-block, copolymer or homopolymer. This process can be progressively repeated with the same or various different reactive diluents to generate desired architecture and molecular weight polymer(s) which can be used in further processing procedures to be manufactured directly into finished articles.Type: GrantFiled: September 3, 2010Date of Patent: October 30, 2012Assignee: Ovation Polymer Technology and Engineered Materials, Inc.Inventors: Prasad Taranekar, Austin L. Schuman, Asis Banerjie
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Patent number: 8288451Abstract: A photo-curable resin composition for the UV-LED light source, which is rapidly cured and particularly has excellent surface curing property, is disclosed. The resin composition contains (a) polybutadiene (meth)acrylate; (b) a polythiol compound; and (c) a photo radical initiator and is photo-curable by an irradiation with an ultraviolet light-LED. Accordingly, production efficiency can be significantly increased in the production of liquid crystal displays and electrical and electronic components.Type: GrantFiled: May 27, 2011Date of Patent: October 16, 2012Assignee: Henkel CorporationInventor: Chunfu Chen
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Publication number: 20120077899Abstract: A process for constructing multi-arm star macromolecules with uniform properties, high molecular weight and narrow molecular weight distribution using free radical polymerization is described.Type: ApplicationFiled: March 29, 2010Publication date: March 29, 2012Applicant: CARNEGIE MELLON UNIVERSITYInventors: Krzysztof Matyjaszewski, Haifeng Gao, James Spanswick
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Patent number: 8129441Abstract: The present invention relates to radiation-curable coating compositions which are of low viscosity and comprise (meth)acrylates and divinyl adipate.Type: GrantFiled: November 8, 2007Date of Patent: March 6, 2012Assignee: BASF AktiengesellschaftInventors: Oscar Lafuente Cerda, Yvonne Heischkel, Michael Vetter, Reinhold Schwalm, Nick Gruber
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Patent number: 8076387Abstract: The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of making irradiated crosslinked polyethylene by irradiating the polyethylene in contact with a sensitizing environment at an elevated temperature that is below the melting point, in order to reduce the concentration of residual free radicals to an undetectable level. A process of making irradiated crosslinked polyethylene composition having reduced free radical content, preferably containing substantially no residual free radicals, by mechanically deforming the polyethylene at a temperature that is below the melting point of the polyethylene, optionally in a sensitizing environment, is also disclosed herein.Type: GrantFiled: June 25, 2010Date of Patent: December 13, 2011Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg, Gareth H. McKinley
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Patent number: 8053486Abstract: The invention provides a coating composition comprising a thermal plastic resin selected from the group consisting of a polycycloolefin resin, polyester resin, polyacrylate resin, and a mixture thereof; and a radiation curable resin comprising a radiation polymer containing at least one mono- or multi-functional acrylic acid based monomer as a polymerization unit, an oligomer containing an ethylenically unsaturated functional group, and a photoinitiator, wherein the radiation curable resin is used in an amount of 220-1000% by weight on the basis of the weight of the thermal plastic resin. The invention improves the hardness of the coating composition, prevent the coated substrate from being scratched or impaired, and impart the substrate with high transparency without causing warping problem.Type: GrantFiled: December 19, 2008Date of Patent: November 8, 2011Assignee: Eternal Chemical Co., Ltd.Inventors: Lung-Lin Hsu, Sue-Hong Liu
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Publication number: 20110245365Abstract: A method for producing a graft polymer comprises the steps of: a) irradiating a base polymer with an electron beam or a source of ?-radiation, b) contacting a grafting solution with the base polymer, wherein the grafting solution contains at least one oxygen scavenger and at least one graft monomer selected from the group consisting of styrene and styrene derivatives, and c) graft polymerizing the mixture of the base polymer and the grafting solution obtained in step b).Type: ApplicationFiled: February 23, 2009Publication date: October 6, 2011Applicant: Belenos Clean Power Holding AGInventor: Dirk Henkensmeier
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Patent number: 8030367Abstract: The invention relates to the field of chemistry and relates to radically coupled PTFE polymer powders that can be used, for example, as tribomaterials, and a method for the production thereof. There is disclosed radically coupled PTFE polymer powders which, when incorporated into a matrix as PTFE polymer compound, exhibit improved wear resistance, and furthermore a simple and efficient method for the production thereof. There is provided radically coupled PTFE polymer powders comprising radiation-chemically and/or plasma-chemically modified PTFE powders, onto the particle surface of which homopolymers, copolymers or terpolymers are radically coupled via a reaction in dispersion or in solid.Type: GrantFiled: July 30, 2010Date of Patent: October 4, 2011Assignee: Leibniz-Institut Fuer Polymerforschung Dresden E.V.Inventors: Dieter Lehmann, Bernd Kluepfel
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Publication number: 20100298461Abstract: The invention relates to the field of chemistry and relates to radically coupled PTFE polymer powders that can be used, for example, as tribomaterials, and a method for the production thereof. The object of the invention is to disclose radically coupled PTFE polymer powders which, when incorporated into a matrix as PTFE polymer compound, exhibit improved wear resistances, and furthermore a simple and efficient method for the production thereof. The object is attained through radically coupled PTFE polymer powders comprising radiation-chemically and/or plasma-chemically modified PTFE powders, onto the particle surface of which homopolymers, copolymers or terpolymers are radically coupled via a reaction in dispersion or in substance.Type: ApplicationFiled: July 30, 2010Publication date: November 25, 2010Applicant: LEIBNIZ-INSTITUT FUER POLYMERFORSCHUNG DRESEDEN E. V.Inventors: Dieter LEHMANN, Bernd KLUEPFEL
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Patent number: 7790780Abstract: Radically coupled PTFE polymer powders useful, for example, as tribomaterials, and a method for production thereof. Radically coupled PTFE polymer powders are provided which, when incorporated into a matrix as PTFE polymer compound, exhibit improved wear resistances, and furthermore there is provided a simple and efficient method for the production thereof. Radically coupled PTFE polymer powders are provided comprising radiation-chemically and/or plasma-chemically modified PTFE powders, onto the particle surface of which homopolymers, copolymers or terpolymers are radically coupled via a reaction in dispersion or in substance. A method is provided in which PTFE powders with reactive perfluoroalkyl-(peroxy) radical centers after a radiation-chemical and/or plasma-chemical modification are reacted in dispersion or in substance with the addition of polymerizable, olefinically unsaturated monomers, whereby during the reaction a polymer-forming reaction is obtained.Type: GrantFiled: October 22, 2004Date of Patent: September 7, 2010Assignee: Leibniz-Institut fuer Polymerforschung Dresden E.V.Inventors: Dieter Lehmann, Bernd Kluepfel
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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: 20090182066Abstract: Crosslinkable polymers and crosslinked fluoropolymers are prepared from selected fluorinated dienes and monomers containing Br and I. Also disclosed are proton conductive membranes of these crosslinked fluoropolymers.Type: ApplicationFiled: December 29, 2008Publication date: July 16, 2009Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Zhen-Yu Yang, Mark Gerrit Roelofs, Randal L. Perry, Amy Qi Han
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Patent number: 7507774Abstract: The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of making irradiated crosslinked polyethylene by irradiating the polyethylene in contact with a sensitizing environment at an elevated temperature that is below the melting point, in order to reduce the concentration of residual free radicals to an undetectable level. A process of making irradiated crosslinked polyethylene composition having reduced free radical content, preferably containing substantially no residual free radicals, by mechanically deforming the polyethylene at a temperature that is below the melting point of the polyethylene, optionally in a sensitizing environment, is also disclosed herein.Type: GrantFiled: October 17, 2007Date of Patent: March 24, 2009Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg, Gareth H. McKinley
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Patent number: 7468235Abstract: Provided are a barrier coating composition and a method of forming photoresist pattern by an immersion photolithography process using the same. The barrier coating composition includes a polymer corresponding to formula I having a weight average molecular weight (Mw) of 5,000 to 100,000 daltons and an organic solvent, wherein the expressions 1+m+n=1; 0.1?1/(1+m+n)?0.7; 0.3?m/(1+m+n)?0.9; and 0.0?n/(1+m+n)?0.6 are satisfied; Rf is a C1 to C5 fluorine-substituted hydrocarbon group; and Z, if present, includes at least one hydrophilic group. Compositions according to the invention may be used to form barrier layers on photoresist layers to suppress dissolution of photoresist components during immersion photolithography while allowing the barrier layer to be removed by alkaline developing solutions.Type: GrantFiled: June 7, 2006Date of Patent: December 23, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Mitsuhiro Hata, Sang-Jun Choi, Man-Hyoung Ryoo
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Patent number: 7432037Abstract: The invention provides a curable resin composition having an addition polymerization-based block copolymer (I) and an ethylenic unsaturated compound (II). Also provided is a flexographic plate material using the curable resin composition as its constituent. The flexographic plate material containing the curable resin composition of the present invention, can be cured to form strong and extendable areas and can be used to make flexographic plates that can form a sharp image plate surface even for a fine image. The flexographic plate material of the present invention is particularly useful in printing on cardboards, recycled paper or other paper articles with rough surfaces.Type: GrantFiled: October 20, 2003Date of Patent: October 7, 2008Assignee: Kuraray Co., Ltd.Inventors: Kenji Suzuki, Kenji Shachi, Mizuho Maeda
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Patent number: 7304097Abstract: The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of making irradiated crosslinked polyethylene by irradiating the polyethylene in contact with a sensitizing environment at an elevated temperature that is below the melting point, in order to reduce the concentration of residual free radicals to an undetectable level. A process of making irradiated crosslinked polyethylene composition having reduced free radical content, preferably containing substantially no residual free radicals, by mechanically deforming the polyethylene at a temperature that is below the melting point of the polyethylene, optionally in a sensitizing environment, is also disclosed herein.Type: GrantFiled: August 16, 2006Date of Patent: December 4, 2007Assignees: Massachusetts General Hospital, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg, Gareth H. McKinley
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Patent number: 7300984Abstract: A process for preparing a graft copolymers is provided comprising exposing a polymeric base material to a dose of ionizing radiation, and then contacting the irradiated base material with a microemulsion comprising at least one fluorostyrenic monomer, water and water-miscible solvent. The graft copolymer may be formed into a membrane, including ion exchange membranes.Type: GrantFiled: November 3, 2004Date of Patent: November 27, 2007Assignee: Ballard Power Systems Inc.Inventor: Sean M MacKinnon
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Patent number: 7238732Abstract: A radiation-curable adhesive composition comprising at least one tackifier resin and at least one radiation-curable composition is provided wherein the tackifier resin comprises monomer repeating units from at least one aromatic monomer and at least one acrylate monomer. Processes to produce the radiation-curable adhesive composition as well as articles comprising the radiation-curable adhesive compositions are also provided.Type: GrantFiled: February 18, 2004Date of Patent: July 3, 2007Assignee: Eastman Chemical CompanyInventors: Derek William Bamborough, Elisabeth Eduarda Catharina Geertruida Gielens, Clazina Cornelia Adriana Adriaanse, Peter Versluijs, Michel Hendrikus Theelen
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Patent number: 7192991Abstract: A cationically curable composition comprises (a) at least one cationically curable species; (b) at least one cationic photoinitiator; and (c) at least one encapsulated, polymer-bound base.Type: GrantFiled: November 26, 2003Date of Patent: March 20, 2007Assignee: 3M Innovative Properties CompanyInventors: Michael A. Kropp, Wayne S. Mahoney, Bridget K. Warmka
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Patent number: 7183334Abstract: A method of preparing fiber sheet molding compounds with a fabric of continuous fiber reinforcement that can be molded under low pressures and temperatures to provide thermoset articles, wherein liquid reactive components are slowly absorbed in solid acrylic resin. The acrylic resin functions as a thickener which delays the viscosity build allowing the fabric of continuous fiber reinforcement to be incorporated before molding.Type: GrantFiled: September 26, 2002Date of Patent: February 27, 2007Assignee: Reinforced Polymers, Inc.Inventor: Robert Guzauskas
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Patent number: 7166650Abstract: The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of making irradiated crosslinked polyethylene by irradiating the polyethylene in contact with a sensitizing environment at an elevated temperature that is below the melting point, in order to reduce the concentration of residual free radicals to an undetectable level. A process of making irradiated crosslinked polyethylene composition having reduced free radical content, preferably containing substantially no residual free radicals, by mechanically deforming the polyethylene at a temperature that is below the melting point of the polyethylene, optionally in a sensitizing environment, is also disclosed herein.Type: GrantFiled: January 7, 2005Date of Patent: January 23, 2007Assignees: Massachusetts General Hospital, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg, Gareth H. McKinley
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Patent number: 7037972Abstract: A multicomponent system curable thermally and with actinic radiation (dual cure), comprising (A) at least one component comprising at least one constituent containing at least one isocyanate-reactive functional group and at least one functional group having at least one bond which can be activated with actinic radiation, and at least one vinylaromatic-allyl alcohol copolymer, and (B) at least one component comprising at least one polyisocyanate, and its use as a coating material, adhesive and sealing compound.Type: GrantFiled: September 26, 2001Date of Patent: May 2, 2006Assignee: BASF Coatings AGInventors: Egbert Nienhaus, Bernhard Lettmann
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Patent number: 7030171Abstract: The objective of the present invention is to provide a production method by which a polymer of a functional group-terminated vinyl monomer can be easily and practically produced. Further, it is another object of the present invention to provide a functional group-terminated vinyl polymer which is useful as a material for the production of various functional products. The first aspect of the present invention is concerned with a production method of a functional group-terminated vinyl polymer comprising a step of synthesizing a halogen atom-terminated vinyl polymer by the radical polymerization reaction of a vinyl monomer in the presence of a halogen compound and a step of introducing a functional group to a terminus by substituting a functional group-containing group for the terminal halogen atom of said vinyl polymer.Type: GrantFiled: October 31, 2003Date of Patent: April 18, 2006Assignee: Sekisui Chemical Co., Ltd.Inventors: Takeshi Wakiya, Takamaro Kakehi
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Patent number: 6852772Abstract: The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of making irradiated crosslinked polyethylene by irradiating the polyethylene in contact with a sensitizing environment at an elevated temperature that is below the melting point, in order to reduce the concentration of residual free radicals to an undetectable level. A process of making irradiated crosslinked polyethylene composition having reduced free radical content, preferably containing substantially no residual free radicals, by mechanically deforming the polyethylene at a temperature that is below the melting point of the polyethylene, optionally in a sensitizing environment, is also disclosed herein.Type: GrantFiled: September 24, 2002Date of Patent: February 8, 2005Assignees: Massachusetts Gerneral Hospital, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg, Gareth H. McKinley
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Patent number: 6828386Abstract: A process for preparing a graft copolymers is provided comprising exposing a polymeric base material to a dose of ionizing radiation, and then contacting the irradiated base material with a microemulsion comprising at least one fluorostyrenic monomer, water and water-miscible solvent. The graft copolymer may be formed into a membrane, including ion exchange membranes.Type: GrantFiled: September 20, 2002Date of Patent: December 7, 2004Assignee: Ballard Power Systems Inc.Inventor: Sean M. MacKinnon
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Patent number: 6693142Abstract: The objective of the present invention is to provide a production method by which a polymer of a functional group-terminated vinyl monomer can be easily and practically produced. Further, it is another object of the present invention to provide a functional group-terminated vinyl polymer which is useful as a material for the production of various functional products. The first aspect of the present invention is concerned with a production method of a functional group-terminated vinyl polymer comprising a step of synthesizing a halogen atom-terminated vinyl polymer by the radical polymerization reaction of a vinyl monomer in the presence of a halogen compound and a step of introducing a functional group to a terminus by substituting a functional group-containing group for the terminal halogen atom of said vinyl polymer.Type: GrantFiled: June 24, 2002Date of Patent: February 17, 2004Assignee: Sekisui Chemical Co., Ltd.Inventors: Takeshi Wakiya, Takamaro Kakehi
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Patent number: 6680144Abstract: A method for producing a battery separator is disclosed. The method comprises applying a coating of an ethylenically unsaturated monomer to the fibers of a non-woven sheet and polymerizing the monomer in situ on the fiber surfaces. The non-woven sheet is from 50 to 3000 microns thick, and is composed of polyolefin fibers having an average fiber diameter from 0.5 to 5 microns and a surface area from 0.2 to 30 square meters per gram.Type: GrantFiled: May 6, 2002Date of Patent: January 20, 2004Assignee: KVG Technologies, Inc.Inventor: Wai M. Choi
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Patent number: 6664306Abstract: This invention relates to polymeric compositions that are processible and may be photochemically cured to produce crosslinked compositions useful in coating, sealants and adhesive applications. The crosslinkable composition comprises a first component having a plurality of pendent, free-radically polymerizable functional groups; a polymeric photoinitiator, and a residual content of less than 2%. The composition is melt processable at temperatures of less than or equal to 100° C.Type: GrantFiled: July 22, 2002Date of Patent: December 16, 2003Assignee: 3M Innovative Properties CompanyInventors: Babu N. Gaddam, Steven M. Hellmann, Ahmed S. Abuelyaman, Maureen A. Kavanagh, Duane D. Fansler, Kevin M. Lewandowski
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Patent number: 6632854Abstract: A process for producing polypropylene having increased melt strength, the process comprising irradiating polypropylene with an electron beam having an energy of at least 5 MeV and with a radiation dose of from 5 to 100 kGray in the presence of a grafting agent for forming long chain branches on the polypropylene molecules.Type: GrantFiled: February 4, 2002Date of Patent: October 14, 2003Assignee: Atofina Research, S.A.Inventor: Yves Charlier
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Patent number: 6515039Abstract: The invention relates to a method for the parallel and combinatory synthesis of compounds bound to a continuous polymeric solid phase supporting material. According to the method, a continuous polymeric solid phase supporting material is prepared, the material comprising a matrix of a supporting polymeric material and graft copolymer chains covalently bound to the supporting matrix, the graft copolymer chains having reactive groups being able to react with organic compounds, thereby forming spatially defined reaction sites. The method then comprises the sequential spotting of synthesis building blocks or reagents at the various reaction sites on the continuous solid phase supporting material to yield a substrate library of compounds bound to the solid phase supporting material, whereby each reaction site on the continuous solid phase supporting material determines the composition of the synthesized compound, which is bound directly on the supporting matrix via the reactive groups of the graft polymer chain.Type: GrantFiled: June 15, 2000Date of Patent: February 4, 2003Assignee: Poly-An GmbHInventors: Mathias Ulbricht, Rudolf Volkmer-Engert, Lothar Germeroth, Holger Wenschuh
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Patent number: 6448301Abstract: This invention relates to polymeric compositions that are processible and may be photochemically cured to produce crosslinked compositions useful in coating, sealants and adhesive applications. The crosslinkable composition comprises a first component having a plurality of pendent, free-radically polymerizable functional groups; a polymeric photoinitiator, and a residual content of less than 2%. The composition is melt processable at temperatures of less than or equal to 100° C.Type: GrantFiled: September 8, 2000Date of Patent: September 10, 2002Assignee: 3M Innovative Properties CompanyInventors: Babu N. Gaddam, Steven M. Heilmann, Ahmed S. Abuelyaman, Maureen A. Kavanagh, Duane D. Fansler, Kevin M. Lewandowski
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Patent number: 6444722Abstract: Graft copolymers with low molecular weight side chains are prepared by (1) irradiating a propylene polymer material in the absence of oxygen, (2) adding a controlled amount of oxygen to the irradiated polymer material so that the polymer is exposed to an amount of oxygen greater than 0.004% but less than 15% by volume at a temperature of 40° C. to 140° C., to produce an oxidized propylene polymer material containing greater than 1 mmol total peroxide per kilogram of propylene polymer material, (3) optionally, heating the oxidized propylene polymer material in a non-oxidizing atmosphere to a temperature of at least 80° C.Type: GrantFiled: November 2, 2000Date of Patent: September 3, 2002Assignee: Basell Poliolefine Italia S.p.A.Inventors: Vu A. Dang, Cheng Q. Song
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Patent number: 6326127Abstract: The present invention relates to a photo-curable polymer composition comprising (a) a first block copolymer comprising at least two blocks A of polymerised monovinyl aromatic monomer, at least one internal block B of polymerised conjugated diene monomer, and at least one tapered or random block C of polymerised monovinyl aromatic monomer and polymerised conjugated diene monomer and/or at least one block D which may be a block of polymerised conjugated diene monomer or a tapered or random block of polymerised monovinyl aromatic monomer and polymerised conjugated diene monomer, wherein block C is an internal polymer block adjacent a terminal block A or an internal block A which is adjacent to a terminal block D, and block D is a terminal block adjacent an internal block A, and, optionally, a residue of a coupling agent, wherein the residue, if present, is derived from a coupling agent containing alkoxy or epoxy functional groups; and (b) a photo-initiator.Type: GrantFiled: December 16, 1999Date of Patent: December 4, 2001Assignee: Kraton Polymers U.S. LLCInventors: Karin Marie-Louise Renee Morren, Xavier Muyldermans
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Patent number: 6231804Abstract: A high molecular weight polyethylene prepared by preliminary polymerization is added at the time of main polymerization of an olefin, for example, propylene, to prepare an olefin (co)polymer composition comprising the above high molecular weight polyethylene finely dispersed as fine particles in the polyolefin, such as polypropylene, and a cross-linked structure is formed in the olefin (co)polymer composition. This process can provide a modified olefin (co)polymer composition improved in the strength in a molten state in terms of melt tension or the like and in crystallization temperature and excellent in moldability such as high-speed producibility, and a molded modified olefin (co)polymer composition excellent in properties such as heat resistance and rigidity.Type: GrantFiled: October 1, 1999Date of Patent: May 15, 2001Assignee: Chisso CorporationInventors: Akira Yamauchi, Shingo Kikukawa, Jun Saito, Hitoshi Sato
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Patent number: 6225368Abstract: A monomer-grafted cross-linked polymer is prepared by the steps of activating a polymer by radiation, quenching the activated polymer so as to effect cross-linking therein, activating the cross-linked polymer by irradiation and contacting the activated cross-linked polymer with an emulsion that includes an unsaturated monomer, an emulsifier and water. The activated cross-linked polymer is contacted with the emulsion for a sufficient time to effect a desired extent of grafting.Type: GrantFiled: September 7, 1999Date of Patent: May 1, 2001Assignee: National Power PLCInventors: Vincent F. D'Agostino, John Michael Newton
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Patent number: 6162843Abstract: Polypropylene is crosslinked by means of an ionizing radiation followed by annealing at a temperature of at least 110.degree. C., in the presence of an unsaturated monomeric compound such as acetylene or 1,3-butadiene or 1,3,5-hexatriene.Type: GrantFiled: September 11, 1998Date of Patent: December 19, 2000Inventors: Harold M. Fisher, Richard Albert Jones, Ian Macmillan Ward
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Patent number: 6020394Abstract: A process for preparing a modified polyalkylene, preferably polyethylene or polypropylene, polymer product is described. The process involves treating the polymer in an impregnation step with UV radiation in the presence of a carbonyl bearing photoinitiator species and a crosslinking species. The radiation may take place in a gaseous or liquid environment which is substantially free of oxygen gas but which comprises at least one of the species.Type: GrantFiled: February 23, 1998Date of Patent: February 1, 2000Assignee: Celgard LLCInventors: Richard A. Jones, Ian M. Ward
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Patent number: 5994426Abstract: A solid-polymer-electrolyte membrane for a polymer-electrolyte fuel cell is formed of a synthetic resin. The synthetic resin includes a main chain, and a hydrocarbon-based side chain. The main chain is formed as a film, and formed of a copolymer made from a fluorocarbon-based vinyl monomer and a hydrocarbon-based vinyl monomer. The hydrocarbon-based side chain involves a sulfonic group. The solid-polymer-electrolyte membrane exhibits a high strength and flexibility, but a low electric resistance, and can be produced at a reduced manufacturing cost. Thus, the solid-polymer-electrolyte membrane can be effectively applied to construct polymer-electrolyte fuel cells.Type: GrantFiled: January 23, 1998Date of Patent: November 30, 1999Assignee: Aisin Seiki Kabushiki KaishaInventors: Shinji Nezu, Masaki Gondo
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Patent number: 5902836Abstract: Solute polymers in solvent monomers form a coatable syrup that can be cured to a viscoelastomeric material when radiation-sensitive .alpha.-cleaving groups in either the polymer or one of the monomers are exposed to ultraviolet radiation. The solute polymers can be formed from the solvent monomers in situ or be added thereto to form the syrup.Type: GrantFiled: August 23, 1995Date of Patent: May 11, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Greggory S. Bennett, Gaddam N. Babu, Kejian Chen, Louis E. Winslow, George F. Vesley, Patrick G. Zimmerman
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Patent number: 5817718Abstract: A solid-polymer-electrolyte membrane for a polymer-electrolyte fuel cell is formed of a synthetic resin. The synthetic resin includes a main chain, and a hydrocarbon-based side chain. The main chain is formed as a film, and formed of a copolymer made from a fluorocarbon-based vinyl monomer and a hydrocarbon-based vinyl monomer. The hydrocarbon-based side chain involves a sulfonic group. The solid-polymer-electrolyte membrane exhibits a high strength and flexibility, but a low electric resistance, and can be produced at a reduced manufacturing cost. Thus, the solid-polymer-electrolyte membrane can be effectively applied to construct polymer-electrolyte fuel cells.Type: GrantFiled: July 31, 1996Date of Patent: October 6, 1998Assignee: Aisin Seiki Kabushiki KaishaInventors: Shinji Nezu, Masaki Gondo
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Patent number: 5773485Abstract: Solute polymers in solvent monomers form a coatable syrup that can be cured to a viscoelastomeric material when radiation-sensitive hydrogen abstracting groups in either the polymer or one of the monomers are exposed to ultraviolet radiation. The solute polymers can be formed from the solvent monomers.Type: GrantFiled: August 23, 1995Date of Patent: June 30, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Greggory S. Bennett, Louis E. Winslow, Gaddam N. Babu
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Patent number: 5743940Abstract: A process for producing a fabric absorbent that is capable of efficient removal of odorous substances, in particular malodorous substances. The absorbent is obtained by exposing an organic high-molecular weight compound, such as polyolefinic polymers or halogenated polyolefinic polymers, to an ionizing radiation and thereafter graft polymerizing the high-molecular weight compound with a polymerizable monomer that contains ion-exchange groups and/or a polymerizable monomer that can be converted to ion-exchange groups so as to incorporate the ion-exchange groups in the high-molecular weight compound.Type: GrantFiled: June 23, 1994Date of Patent: April 28, 1998Assignees: Japan Atomic Energy Research Institute, Ebara CorporationInventors: Takanobu Sugo, Jiro Okamoto, Kunio Fujiwara, Hideaki Sekiguchi, Toshiaki Fujii
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Patent number: 5728747Abstract: A free radical polymerization process for the preparation of polymer comprising:a first heating and photoinitiating with ultraviolet light of a mixture comprised of a stable free radical agent, and at least one polymerizable monomer compound;optionally cooling said mixture;a second heating of said mixture at a temperature of from about 100.degree. C. to about 160.degree. C.;isolating the polymer product formed; andoptionally washing and drying said polymer.Type: GrantFiled: August 8, 1996Date of Patent: March 17, 1998Assignee: Xerox CorporationInventors: Peter M. Kazmaier, Barkev Keoshkerian, Rafik O. Loutfy, Karen A. Moffat, Michael K. Georges, Gordon K. Hamer, Richard P. N. Veregin
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Patent number: 5652281Abstract: Disclosed are graft copolymers of polyolefins and a method of preparing the graft copolymers. The method includes irradiating a mass of olefin polymer particles and thereafter treating the mass of particles with a vinyl monomer in liquid form. A nonoxidizing environment is maintained throughout the process while free radicals produced in the olefin polymer by the irradiation are present, thereby preventing degradation of the polymer. In a final step, residual free radicals are deactivated, and any unreacted monomer is removed.Type: GrantFiled: November 21, 1994Date of Patent: July 29, 1997Assignee: Montell North America Inc.Inventors: Paolo Galli, Anthony J. DeNicola, Jr., Jeanine A. Smith
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Patent number: 5536772Abstract: This invention provides a radiation cured composition which is curable at low levels of radiation. The composition comprises a crosslinked unsaturated epoxidized diene polymer and a terpene tackifying resin. The invention also encompasses adhesive, coating and sealant compositions made with the above composition.Type: GrantFiled: June 18, 1993Date of Patent: July 16, 1996Assignee: Shell Oil CompanyInventors: Steven H. Dillman, James R. Erickson