From Acyclic Mono-unsaturated Halogenated Reactant Patents (Class 521/145)
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Publication number: 20110098373Abstract: A foam form sheet material having a first large surface comprising substantially only closed cells and an opposite large surface and an interior comprising substantially only open cells. This material comprises a cross linked olefin thermoplastic polymer or copolymer. The foam is made by mixing the polymer with a blowing agent and a cross linking agent. The mixture is maintained in a two roll mill means for a time sufficient to initiate cross linking and to initiate foaming to form closed cells. The sheet material is then disposed in a second two roll mill means having a nip that is larger than the thickness of the foamed sheet material and maintained under elevated temperature and pressure sufficient to initiate further cross linking and foaming. The fully cross linked cell foam is then compressed to rupture the closed cells that are disposed in the interior to form open cells.Type: ApplicationFiled: July 9, 2008Publication date: April 28, 2011Applicant: SENSTAT PRODUCTS & TECHNOLOGIES, INC.Inventor: Edward Benjaminsen
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Publication number: 20110049959Abstract: Building materials formed from synthetic polymer materials have an appearance which simulates natural woods. The building materials may be used in the construction of fences, sheds, decking materials, indoor/outdoor furniture, railings and numerous other products. The faux wood material is constructed to include reinforcing fibers and voids for weight reduction. The aesthetic appearance of the finished product can be enhanced by applying a color wash which includes a polymer component and a color component adhering to the surface of the material.Type: ApplicationFiled: August 26, 2010Publication date: March 3, 2011Applicant: ENVIO PRODUCTS, LLCInventor: Larry Schwartz
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Publication number: 20110039960Abstract: A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.Type: ApplicationFiled: September 21, 2010Publication date: February 17, 2011Inventors: Ping Xu, Jack J. Hegenbarth, Rachel Radspinner, Paul D. Drumheller, William B. Johnson, Wen K. Liu, Xin Kang Chen
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Patent number: 7879922Abstract: Expanded products, more specifically, rigid or semi-flexible foams of low density from 1.5 to 12 lbs/ft3 or more, with closed cells can be manufactured. The products have a PVC backbone with branches with methacrylate crosslinked with isocyanate through a reaction activated by ultraviolet or microwave radiation. The use of polyfunctional monomers that are sensitive to irradiation yields a higher cross-link density, which improves the physical and mechanical properties such as hardness, resistance to abrasion, ductility, and resistance to friction. The selection of monomers and oligomers allows the manufacturer to determine of the final properties of the foam. The process yields foams with extreme hardness and better shear factors making the foam an ideal product for aerospace and windmill use. These physical properties emerge during the post-curing process, preferably by use of compounds based on methacrylates in dispersion with PVC and isocyanates.Type: GrantFiled: November 20, 2007Date of Patent: February 1, 2011Assignee: PolyuMAC Inc.Inventor: Juan Miguel Vazquez
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Publication number: 20110011793Abstract: According to one embodiment of the present invention, there is provided a porous member formed by providing a member 1 formed of a fluororesin 3 containing carbon fiber 2 and having a predetermined shape and exposing the member 1 to an oxidizing gas to remove the carbon fiber 2 contained in the member 1.Type: ApplicationFiled: February 23, 2009Publication date: January 20, 2011Applicant: Tokyo Electron LimitedInventors: Jiro Higashijima, Satoshi Kaneko
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Patent number: 7872056Abstract: The present invention relates to compositions comprising blends of alkenyl aromatic polymers such as styrenic polymers (i.e. PS and HIPS) and bio-based or biodegradable polymers (i.e. PLA, PGA, PHA, PBS, PCL) compatibilized with styrene-based copolymers (i.e. styrene-ethylene-butylene-styrene (SEBS) block copolymers, maleated SEBS, styrene-maleic anhydride (SMA) copolymer, styrene-methyl methacrylate (SMMA) copolymer) or a mixture of two or more styrene-based copolymers such as SEBS and SMA. These novel compositions can be extruded and thermoformed to produce very low density food service and consumer foam articles such as plates, hinged lid containers, trays, bowls, and egg cartons with good mechanical properties.Type: GrantFiled: February 2, 2009Date of Patent: January 18, 2011Assignee: Pactiv CorporationInventors: Yunwa Wilson Cheung, David V. Dobreski, Richard Turner, Mark Wheeler, Y. Paul Handa
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Publication number: 20100326697Abstract: The present invention discloses an article made from a foamable thermoplastic polymer composition. The foamable composition of the article includes a partially-crystalline melt processible perfluoropolymer and a foam nucleating package. The foamable composition of the article has a uniform foam cell size where the foam cell size of at least 90% of the foamed cells is 50 micrometers or less. The foam nucleating package ranges from 0.1 to 10 wt % of the combined weight of the perfluoropolymer and the foam nucleating package.Type: ApplicationFiled: September 9, 2010Publication date: December 30, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: SUNDAR KILNAGAR VENKATARAMAN, ROBERT THOMAS YOUNG
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Patent number: 7842735Abstract: Described is a process for making closed cell fluoropolymer foam, and the foam so made. The process includes subjecting a fluoropolymer resin an inert gas at a pressure higher than atmospheric to drive gas into the resin, raising the temperature of the resin to or above its softening point, and reducing the pressure while maintaining the temperature at or above the softening point of the resin, in order to expand the resin to result in closed cell fluoropolymer foam. The resin is cross-linked prior to expansion. The resulting foams can be used in various applications, such as in flotation devices and for making thermal and/or acoustic insulation.Type: GrantFiled: April 28, 2005Date of Patent: November 30, 2010Assignee: Zotefoams PLCInventors: Paul Jacobs, Roger Lock, Neil Witten, Michael Werth, Ramin Amin-Sanayei
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Publication number: 20100288533Abstract: A foamable fluoropolymer composition containing foam cell nucleating agent is provided, wherein the fluoropolymer comprises melt-fabricable tetrafluoroethylene-/hexafluoropropylene copolymer and tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, wherein the alkyl contains 1 to 4 carbon atoms, wherein the melting temperature of said tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer is no more than 35° C. greater than the melting temperature of said tetrafluoroethylene/hexafluoropropylene copolymer, and/or wherein said tetrafluoroethylene/hexafluoropropylene copolymer and said tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer each have a melt flow rate (MFR) within the range of 1 to 40 g/10 min and the MFR of one of said copolymers is at least twice that of the other of said copolymers.Type: ApplicationFiled: May 7, 2010Publication date: November 18, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Heidi Elizabeth Burch, Sundar Kilnagar Venkataraman, Robert Thomas Young
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Publication number: 20100270509Abstract: A method for producing a vinylidene fluoride based polymer powder having a high molecular weight and excellent solubility in an organic solvent, which is useful as an electrode binder for nonaqueous cells, is provided. Methods for producing an NMP solution and an electrode mixture are also provided. A vinylidene fluoride based polymer powder produced by supercritical suspension polymerization in an aqueous dispersion medium wherein a volume of pores having a pore diameter of 0.03 ?m to 1.0 ?m, as measured by a mercury porosimeter, is 77 vol % to 93 vol % of a total pore volume and an inherent viscosity is 2.0 dl/g or greater is obtained.Type: ApplicationFiled: September 12, 2008Publication date: October 28, 2010Applicant: KUREHA CORPORATIONInventors: Mitsuyasu Sakuma, Hiroshi Sato, Michihisa Miyahara, Katsuo Horie, Hiroshi Sakabe
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Publication number: 20100267853Abstract: The invention provides a formulation for rendering surfaces fireproof by application thereon.Type: ApplicationFiled: October 29, 2008Publication date: October 21, 2010Applicant: E.M.A.T. TECHNOLOGIES LTD.Inventors: Eyal Edry, Felix Lerner
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Publication number: 20100247894Abstract: The present invention provides microporous polymers and methods for producing and using the same. In particular, microporous polymers of the present invention are highly porous as indicated by a Gurley air permeability flow rate of about 4 seconds or less per mL of air flow per 25 micron of microporous polymer thickness per square inch.Type: ApplicationFiled: June 9, 2010Publication date: September 30, 2010Applicant: POROUS POWER TECHNOLOGIES, LLCInventor: Kirby W. Beard
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Publication number: 20100248324Abstract: A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.Type: ApplicationFiled: March 24, 2009Publication date: September 30, 2010Inventors: Ping Xu, Jack J. Hegenbarth, Xin Kang Chen
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Publication number: 20100249255Abstract: Fluoropolymer foams are prepared by mixing fluoropolymer resin with blowing agents and additives to produce foamable compounds at temperatures below the activation temperature of the blowing agent. The compounded material is expanded at temperatures above both the softening point of the fluoropolymer resin and the activation temperature of the blowing agent. The resulting fluoropolymer foam can be fabricated into any desired shape, such as pipes, sheets, tapes, blocks and rods, using techniques such as cutting, welding, thermoforming and adhesive bonding. Alternatively the fluoropolymer compound may be expanded directly into the desired shape, for example, by expanding the compound in a mould.Type: ApplicationFiled: November 12, 2008Publication date: September 30, 2010Applicant: ZOTEFOAMS PLCInventors: Paul Jacobs, Roger Lock, Neil Witten
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Microporous Membranes Having a Relatively Large Average Pore Size and the Methods of Making the Same
Publication number: 20100221522Abstract: Microporous membranes having a relatively large average pore size, methods of making microporous membranes having a relatively large average pore size, and methods of using microporous membranes having a relatively large average pore size are disclosed.Type: ApplicationFiled: September 24, 2008Publication date: September 2, 2010Inventor: James S. Mrozinski -
Patent number: 7767725Abstract: A foaming composition comprising a melt processible fluoropolymer, and a chemical foaming agent, where the chemical foaming agent is ammonium polyphosphate.Type: GrantFiled: November 26, 2008Date of Patent: August 3, 2010Assignee: NexansInventors: Susanne Brix, Friedrich Müller, Christian Lankes, Alfred Gemmel, Olivier Pinto, Mikael Abeguile, Jérôme Alric, Thierry Auvray, Paul Kroushl
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Publication number: 20100147763Abstract: The present invention describes a method of modifying pores of a porous membrane, comprising contacting the membrane with a pore modifying agent, wherein the pore modifying agent modifies the pore opening at the first surface of the membrane differently than the pore opening at the second surface of the membrane. The invention also describes a porous membrane having a first surface and a second surface, comprising a plurality of pores extending between the first and second surfaces, wherein the pores have been modified by a pore modifying agent such that the pore opening at one membrane surfaces is distinct from the pore opening of the other membrane surface, or the pore shape is distinct at one or more locations between the first and second surfaces.Type: ApplicationFiled: January 23, 2008Publication date: June 17, 2010Applicant: Whatman, Inc.Inventors: Dean T. Tsou, Manuel M. Pacheco
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Publication number: 20100151243Abstract: The disclosure provides a composition as well as a set of compositions and method for producing cellular or foamed or blown fluoropolymers such as perfluoropolymers and other thermoplastics articles allowing for the creation of a lower cost communications cable, conductor separator, conductor support-separator, jacketing, tape, wire insulation and in some cases a conduit tube as individual components or combined configurations that exhibit improved electrical, flammability and optical properties. Specifically, the foamable or blown fluoropolymer such as a perfluoropolymer cellular insulation composition comprises; talc and the selected fluoropolymer such as perfluoropolymers. Compounded pellets or products resulting in cellular or foamable products using these pellets has also been realized by providing the melt combination in the pellets of only talc and a perfluoropolymer.Type: ApplicationFiled: August 1, 2008Publication date: June 17, 2010Applicant: Cable Components GroupInventor: Charles A. Glew
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Publication number: 20100041123Abstract: Disclosed are bioanodes comprising a quaternary ammonium treated Nafion® polymer membrane and a dehydrogenase incorporated within the treated Nafion® polymer. The dehydrogenase catalyzes the oxidation of an organic fuel and reduces an adenine dinucleotide. The ion conducting polymer membrane lies juxtaposed to a polymethylene green redox polymer membrane, which serves to electro-oxidize the reduced adenine dinucleotide. The bioanode is used in a fuel cell to produce high power densities.Type: ApplicationFiled: October 8, 2009Publication date: February 18, 2010Applicant: St. Louis UniversityInventors: Shelley D. Minteer, Niki L. Akers, Christine M. Moore
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Patent number: 7662324Abstract: In an exemplary embodiment, the present method includes the stops of providing a polymer resin to be processed: blending particulate boron nitride (BN) and a fluorine-containing polymer with said polymer resin to provide a resin blend: heating said resin blend to obtain a desired flowability value: and processing said resin blend into a desired shape.Type: GrantFiled: April 30, 2002Date of Patent: February 16, 2010Assignee: Saint-Gobain Ceramics & Plastics, IncInventors: Eugene A. Pruss, Thomas M. Clere, Stuart K. Randa
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Publication number: 20090326084Abstract: The invention relates to e new environmentally friendly process in which cellular foamed polymer particles selected from the group consisting of cross-linked PVC rigid foam, polyurethane, polyester, polyether and polystyrene are recycled and reused in new extruded acoustics products together with other plastic components.Type: ApplicationFiled: June 25, 2009Publication date: December 31, 2009Inventor: Nenna Olsson
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Publication number: 20090285764Abstract: Provided are azeotrope-like compositions comprising tetrafluoropropene and hydrofluorocarbons and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.Type: ApplicationFiled: July 28, 2009Publication date: November 19, 2009Applicant: HONEYWELL INTERNATIONAL INC.Inventors: RAJIV R. SINGH, HANG T. PHAM, GARY KNOPECK, LOUIS E. HERENA, JEREMY N. DIRINGER
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Publication number: 20090277141Abstract: First, a mixture of a polytetrafluoroethylene fine powder and a liquid lubricant into a sheet-form body extending in a first direction. Next, the liquid lubricant is removed from the sheet-form body. Then, the sheet-form body is stretched by a factor of 40 to 250 in the longitudinal direction at a temperature equal to or higher than a melting point of polytetrafluoroethylene, and the stretched sheet-form body is further stretched by a factor of 3 to 40 in the width direction. Thus, a highly air-permeable porous polytetrafluoroethylene membrane is obtained.Type: ApplicationFiled: April 16, 2009Publication date: November 12, 2009Applicant: NITTO DENKO CORPORATIONInventors: Yuuichi ABE, Masaaki MORI, Kousei TAKIISHI
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Publication number: 20090250391Abstract: A modified substrate for a protein chip wherein a protein adsorptive membrane and a protein non-adsorptive membrane are arranged on the same flat surface is provided as a substrate. A Method for manufacturing a modified polyvinylidene fluoride membrane is characterized in that a polyvinylidene fluoride membrane is subjected to a heat and pressure treatment under a condition of a temperature of 30° C. to 170° C., a pressure of 1000 to 5000 N/cm2, and the following formula: T??0.015P+105 wherein T is a temperature (° C.) and P is a pressure (N/cm2).Type: ApplicationFiled: April 1, 2009Publication date: October 8, 2009Applicant: LINTEC CorporationInventor: Kentaro MIYAZAKI
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Publication number: 20090236118Abstract: A foaming composition includes a fluoropolymer, a nucleating agent and a pigment, wherein said pigment is a manganese-antimony-titanium (Mn—Sb—Ti) oxide pigment.Type: ApplicationFiled: March 24, 2008Publication date: September 24, 2009Inventors: Mikael Abeguile, Jerome Alric, Thierry Auvray, Paul Kroushl
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Patent number: 7582703Abstract: The invention pertains to a cross-linkable compound comprising a perfluoropolyether (PFPE) moiety derived from an hydroxy-terminated PFPE-oil, which is bonded through a spacer with an ethylenically unsaturated group, wherein the spacer extends over at least three carbon atoms. The invention further relates to a perfluoropolyether rubber obtainable by hydrosilating said cross-linkable compound and to an apparatus for transferring a toner image from an image-forming medium to a receiving medium.Type: GrantFiled: July 25, 2003Date of Patent: September 1, 2009Assignee: Oce-Technologies B.V.Inventors: Ronald Hubert Carlos Cornelissen, Karel Pieter Daniël Van Zeeventer, Peter Richard Markies, Guy Peter Maria Verbeek, Joannes Adrianus Verbunt, Sandra Mei-Iing De Jong, Peter Maria Cornelis Zeelen
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Publication number: 20090186956Abstract: The present invention discloses a foamable composition. The foamable composition includes a partially-crystalline melt processible perfluoropolymer and a foam nucleating package. The foamable composition has a uniform foam cell size where the foam cell size of at least 90% of the foamed cells is 50 micrometers or less. The foam nucleating package ranges from 0.1 to 10 wt % of the combined weight of the perfluoropolymer and the foam nucleating package.Type: ApplicationFiled: March 24, 2009Publication date: July 23, 2009Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Sundar Kilnagar Venkataraman, Robert Thomas Young
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Publication number: 20090082479Abstract: Disclosed herein is a method of preparing a fused aerogel-polymer composite in which aerogel and an organic polymer is mixed in a dry state to adsorb polymer particles on the surface of the aerogel and are then subjected to thermal treatment, thus forming a polymer coating on the aerogel. The fused aerogel-polymer composite can be used for thermal insulation in a variety of applications. The fused aerogel-polymer composite exhibits high thermal insulation properties and superior physical strength and processability while still maintaining the properties of an aerogel that does not have a polymer coated on its surface.Type: ApplicationFiled: April 10, 2008Publication date: March 26, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Myung Dong CHO
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Publication number: 20090071339Abstract: Provided is a method of manufacturing a porous polytetrafluoroethylene (PTFE) membrane capable of achieving both a high collection efficiency and a low pressure drop, though it has a larger average pore size and a greater thickness than conventional porous PTFE membranes. This manufacturing method includes: stretching an unsintered polytetrafluoroethylene sheet by a factor of 5 to 30 in a predetermined direction at a temperature equal to or higher than the melting point of polytetrafluoroethylene; further stretching the stretched sheet by a factor of 5 to 40 in a direction different from the predetermined direction at a temperature lower than the melting point; and after the stretchings, heating the stretched sheet at a temperature equal to or higher than the melting point.Type: ApplicationFiled: March 23, 2007Publication date: March 19, 2009Applicant: NITTO DENKO CORPORATIONInventors: Masatoshi Suzuki, Youji Uchida
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Publication number: 20090018225Abstract: A foaming composition includes a polymer having a melting temperature above 250° C., and an organic salt as chemical foaming agent having a decomposition temperature above the melting point of the polymer, where the organic salt is selected from the group of citrate derivatives and tartrate derivatives, or a mixture thereof.Type: ApplicationFiled: December 11, 2007Publication date: January 15, 2009Inventors: Alfred Gemmel, Jerome Alric, Lawrence Letch, Greg Heffner, Gilberto Lunardi, Mikael Abeguile, Thierry Auvray
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Patent number: 7475686Abstract: An earplug comprising a foam composition containing a polyvinyl chloride resin and less than about 5 wt % monomeric phthalate, based on the total weight of the foam composition, is described. The foam composition may include a plasticizer containing less than or equal to about 2 wt % monomeric phthalate, based on the total weight of the plasticizer. The earplugs have slow recovery times from 60 percent compression to 10 percent compression of about 10 to about 60 seconds.Type: GrantFiled: October 15, 2004Date of Patent: January 13, 2009Assignee: Cabot Safety Intermediate CorporationInventors: Richard E. Knauer, Alan R. Seville
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Publication number: 20090005466Abstract: The invention relates to a foam which has been made hydrophobic/oleophobic and comprises a foam matrix having open cells and having an impregnation which is made up essentially of a polyvinylidene halide (co)polymer which may optionally comprise further substituents and, if appropriate, additionally a fluorocarbon resin and/or silicone resin. The invention further relates to a process for producing this foam.Type: ApplicationFiled: August 22, 2006Publication date: January 1, 2009Applicant: BASF SEInventors: Horst Baumgartl, Christof Mock, Bernhard Vath
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Publication number: 20080287560Abstract: This invention relates to foam insulating products, particularly extruded polystyrene foam, containing nano-graphite as a process additive for improving the physical properties of foam products.Type: ApplicationFiled: July 5, 2006Publication date: November 20, 2008Inventors: Roland R. Loh, Mark E. Polasky, Joseph P. Rynd, Yadollah Delaviz, Manoj K. Choudhary, Bharat Patel
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Patent number: 7439297Abstract: A composition comprising: A) 50-99.9% by weight of at least a copolymer (1) of ethylene (E) with chlorotrifluoroethylene (CTFE) wherein CTFE is comprised between 53 and 70% by moles, having a crystallinity in the range 5-45%; B) 0.1-50% by weight of a fine powder of a nucleating agent, having an average particle size lower than 50 micron and a melting temperature higher than 300° C.Type: GrantFiled: September 24, 2004Date of Patent: October 21, 2008Assignee: Solvay Solexis S.p.A.Inventors: Julio A. Abusleme, Claudia Manzoni
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Publication number: 20080207790Abstract: An earplug comprising a foam composition comprising a polyvinyl chloride resin and less than about 5 wt % monomeric phthalate, based on the total weight of the foam composition, is described. The foam composition may comprise a plasticizer comprising less than or equal to about 2 wt % monomeric phthalate, based on the total weight of the plasticizer. The earplugs have slow recovery times from 60 percent compression to 10 percent compression of about 10 to about 60 seconds.Type: ApplicationFiled: March 21, 2008Publication date: August 28, 2008Inventors: Richard E. Knauer, Alan R. Seville
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Publication number: 20080176971Abstract: An object of the present invention is to provide an extruded propylene-based resin foam in which a average diameter of cells therein can be reduced while a high expansion ratio remains high, thereby providing an excellent insulation efficiency. The extruded propylene-based resin foam according to the present invention is extruded propylene-based resin foam that is formed by extrusion-foaming a propylene-based resin, and the extruded propylene-based resin foam has the expansion ratio of 10 or more and the average cell diameter of less than 400 ?m. With this configuration, the extruded foam can have a plurality of air bubble walls therein. Thus, the extruded propylene-based resin foam can efficiently block external radiant heat, thereby realizing excellent insulation efficiency.Type: ApplicationFiled: November 18, 2005Publication date: July 24, 2008Inventors: Minoru Sugawara, Yasuhiko Otsuki, Ryoichi Tsunori
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Publication number: 20080149899Abstract: The present invention discloses a foamable composition. The foamable composition includes a partially-crystalline melt processible perfluoropolymer and a foam nucleating package. The foamable composition has a uniform foam cell size where the foam cell size of at least 90% of the foamed cells is 50 micrometers or less. The foam nucleating package ranges from 0.1 to 10 wt % of the combined weight of the perfluoropolymer and the foam nucleating package.Type: ApplicationFiled: December 19, 2007Publication date: June 26, 2008Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Sundar Kilnagar Venkataraman, Robert Thomas Young
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Publication number: 20080153936Abstract: The present invention discloses an article made from a foamable thermoplastic polymer composition. The foamable composition of the article includes a partially-crystalline melt processible perfluoropolymer and a foam nucleating package. The foamable composition of the article has a uniform foam cell size where the foam cell size of at least 90% of the foamed cells is 50 micrometers or less. The foam nucleating package ranges from 0.1 to 10 wt % of the combined weight of the perfluoropolymer and the foam nucleating package.Type: ApplicationFiled: December 19, 2007Publication date: June 26, 2008Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Sundar Kilnagar Venkataraman, Robert Thomas Young
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Patent number: 7060736Abstract: The selection of additives to improve the solubility of blowing agents may be facilitated by using a method that involves determining and comparing the activity coefficients of prospective additives to the activity coefficients of candidate blowing agents in a given base polymer for producing a polymeric foam article. The method for the selection of an additive may comprise selecting a representative compound for the base polymer and determining a first activity coefficient for a blowing agent in the representative compound. Also selected are several candidate additives, each having a different functional group, and determining a second activity coefficient for the blowing agent in each of the candidate additives. Among the candidate additives is selected the additive, wherein the second activity coefficient is lower than the first activity coefficient. The method may be incorporated into a process for forming polymeric foams and the manufacture of a polymeric foam.Type: GrantFiled: May 7, 2003Date of Patent: June 13, 2006Assignee: Fine Technology, Inc.Inventors: Jay Reimers, Doug Berti
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Patent number: 7026366Abstract: An olefinic thermoplastic elastomer composition which includes an acrylic-modified polytetrafluoroethylene. When foamed, such compositions produce a very soft foam with improved processing properties and physical characteristics. A process of foaming and foamed articles are also disclosed.Type: GrantFiled: August 18, 2004Date of Patent: April 11, 2006Assignee: Advanced Elastomer Systems, L.P.Inventors: Abdelhadi Sahnoune, Terry M. Finerman, Sunny Jacob, Sydney Ham
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Patent number: 6971211Abstract: The present invention is a component such as a siding panel that may be comprised of various formulations of cellulosic/polymer composite materials. One embodiment of the present invention is a siding panel that is comprised of a cellulosic/PVC composite material. This composite material may include at least one cellulosic filler in the amount of about 30% to about 60% by weight and a PVC material in the amount of about 40% to about 70% by weight. The PVC material may include about 1 to about 10 parts stabilizer(s) per 100 parts of the PVC resin, about 2 to about 12 parts lubricant(s) per 100 parts of the PVC resin, and about 0.5 to about 8 parts process aid(s) per 100 parts of the PVC resin. Another embodiment of the present invention is a siding panel that may be comprised of a cellulosic/polypropylene composite material.Type: GrantFiled: March 17, 2004Date of Patent: December 6, 2005Assignee: Crane Plastics Company LLCInventor: Burch E. Zehner
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Patent number: 6902693Abstract: Open celled membranes from thermoplastic polymers are prepared from foamed polymer melts by extrusion through a die.Type: GrantFiled: January 22, 2002Date of Patent: June 7, 2005Assignee: Sartorius AGInventor: Rebecca Klötzer
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Patent number: 6812263Abstract: Formulations of polyvinyl chloride blended with nitrile rubber are provided. These formulations have been found to be useful in floor cleaning units, and provide a cost savings benefit, while meeting the physical and chemical property demands for the floor cleaning unit parts into which they are formed.Type: GrantFiled: July 3, 2003Date of Patent: November 2, 2004Assignee: The Hoover CompanyInventor: John J. Morgan
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Patent number: 6765033Abstract: An expandable vinyl chloride resin composition that the expansion ratio of a vinyl chloride resin can be greatly increased by the use of thermally decomposable inorganic blowing agents without the use of organic solvent blowing agents, and which comprises 100 parts by weight of a vinyl chloride resin, 5 to 30 parts by weight of, as a processing aid, a (meth)acrylic acid ester polymer having a specific viscosity of not less than 0.73 measured at 30° C. with respect to a solution of 0.1 g of the polymer dissolved in 100 ml of chloroform, and 2 to 25 parts by weight of a thermally decomposable inorganic blowing agent.Type: GrantFiled: August 17, 2000Date of Patent: July 20, 2004Assignee: Kaneka CorporationInventors: Takenobu Sunagawa, Noriko Sakashita, Toshiyuki Mori, Akira Takaki
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Patent number: 6746608Abstract: The invention is directed to fluorinated particles having adsorbent properties for superior performance as the stationary phase for use in chromatographic separations. In particular, the fluorinated surface of such particles of the invention presents unusual and unexpected polarity that is beneficial in performing chromatographic separations such as that used for DNA.Type: GrantFiled: December 12, 2002Date of Patent: June 8, 2004Assignee: Prometic Biosciences, Inc.Inventor: Leonard H. Smiley
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Patent number: 6723762Abstract: There is provided a foamable poly(vinyl chloride) resin composition which can remarkably improve an expansion ratio. There is used a foamable poly(vinyl chloride) resin composition comprising 100 parts by weight of (A) a poly(vinyl chloride) resin, 0.5 to 30 parts by weight of (B) a processing aid, and 0.Type: GrantFiled: March 7, 2002Date of Patent: April 20, 2004Assignee: Kaneka CorporationInventors: Takenobu Sunagawa, Noriko Sakashita, Mitsutaka Sato, Mamoru Kadokura
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Patent number: 6635687Abstract: An expandable vinyl chloride resin composition which can provide foamed articles having a greatly enhanced expansion ratio without remarkably lowering the surface property and strength by the use of thermally decomposable blowing agents without the use of organic solvent blowing agents, and which comprises 100 parts by weight of a vinyl chloride resin, 0.5 to 30 parts by weight of, as a processing aid, a two stage (meth)acrylic ester polymer having a specific viscosity of at least 0.5 (0.1 % chloroform solution, 30° C.) prepared by polymerizing a monomer component containing as a main component a monomer selected from acrylic esters and methacrylic esters excepting methyl methacrylate in the presence of a latex of a methyl methacrylate polymer having a specific viscosity of at least 0.7, 0.3 to 25 parts by weight of a thermally decomposable inorganic blowing agent, 0.01 to 15 parts by weight of a thermally decomposable organic blowing agent and 0 to 20 parts by weight of a filler.Type: GrantFiled: March 7, 2002Date of Patent: October 21, 2003Assignee: Kaneka CorporationInventors: Takenobu Sunagawa, Mitsutaka Sato, Mamoru Kadokura
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Patent number: 6627277Abstract: In an extruder for producing a polytetrafluoroethylene tube having a minimum thickness deviation by extruding a polytetrafluoroethylene paste through an annular portion formed by a core pin (30) and a die orifice (50) around it, the core pin comprises a mandrel connection end (34) which is connected to a mandrel and a die orifice outlet end (36) which is located at a die orifice outlet end, and the core pin has between the ends a portion of which cross-section perpendicular to an axial direction of the core pin has a smaller area than that of a cross-section of each end of the core pin. By using the extruder, the tube having a thickness deviation of not larger than 15% can be obtained.Type: GrantFiled: February 18, 2000Date of Patent: September 30, 2003Assignee: Daikin Industries Ltd.Inventors: Tatsuro Uchida, Shinji Murakami, Shoji Kawachi
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Patent number: 6610757Abstract: An expandable vinyl chloride resin composition that the expansion ratio of a vinyl chloride resin can be greatly increased by the use of thermally decomposable inorganic blowing agents without the use of organic solvent blowing agents, and which comprises 100 parts by weight of a vinyl chloride resin, 0.5 to 30 parts by weight of, as a processing aid, a (meth)acrylic acid ester polymer having a specific viscosity of not less than 0.73 measured at 30° C. with respect to a solution of 0.1 g of the polymer dissolved in 100 ml of chloroform, and not less than 0.3 to less than 2 parts by weight of a thermally decomposable inorganic blowing agent such as sodium bicarbonate.Type: GrantFiled: October 31, 2001Date of Patent: August 26, 2003Assignee: Kaneka CorporationInventors: Takenobu Sunagawa, Mitsutaka Sato, Noriko Sakashita, Mamoru Kadokura
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Patent number: 6608115Abstract: Polyvinyl chloride resin compositions and methods of preparation and use thereof for increasing the degree of whiteness in finished polyvinyl chloride foam. The resin compositions contain sulfur compounds selected from sulfonic acid derivatives, sulfinic acid derivatives, and mercapto acetic acid sodium salt, and optionally contain water soluble salts and/or t-butyl hydroperoxide.Type: GrantFiled: January 21, 2003Date of Patent: August 19, 2003Assignee: Occidental Chemical CorporationInventors: Michael T. Moran, Thomas E. Moses, Sherry Rohn Clancy