Elemental Silicon, Soil, Or Inorganic Silicon Compound As Dnrm Patents (Class 524/789)
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Patent number: 7335410Abstract: The invention relates to a composition suitable for catalysis in a process for the manufacture of polyester containing as Component I a carrier substance on which catalytically effective metal compounds are adsorbed and as Component II a phosphonic acid compound.Type: GrantFiled: October 19, 2001Date of Patent: February 26, 2008Assignee: Zimmer AGInventors: Brigitta Otto, Eckhard Seidel, Thomas Steinbrecher
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Patent number: 7230044Abstract: The invention provides intimate physical mixtures of macrocyclic polyester oligomer (MPO) and filler, as well as methods for their preparation and use. Improved dispersion of filler in a polymer matrix is achieved upon polymerization, and larger amounts of filler with high aspect ratio can be used. In one aspect, the invention provides mixtures of MPO with magnesium silicate. In another aspect, the invention provides a mixture of MPO, filler, and polymerization catalyst as a one-part, ready-to-polymerize material with a long shelf life. The one-part material can be used, for example, in the manufacture of parts without modification of existing processing equipment.Type: GrantFiled: October 27, 2005Date of Patent: June 12, 2007Assignee: Cyclics CorporationInventors: Tohru Takekoshi, Steven R. Bahr, Steven J. Winckler
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Patent number: 7208546Abstract: A method for making a golf ball including the steps of providing a core; providing a nanoparticulate; providing a first monomer including an olefin; providing a second monomer including an ?,?-ethylenically unsaturated carboxylic acid; in-situ polymerizing the first monomer and the second monomer in the presence of the nanoparticulate to form a nanocomposite non-ionic polymer; and forming a cover layer about the core from the nanocomposite non-ionic polymer.Type: GrantFiled: June 10, 2005Date of Patent: April 24, 2007Assignee: Acushnet CompanyInventors: Murali Rajagopalan, Michael J. Sullivan
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Patent number: 7189789Abstract: A curable fluoropolyether composition comprising (A) a fluoropolyether compound containing alkenyl radicals and having a fluorine content of at least 40% by weight, (B) a curing agent in the form of a fluorinated organosilicon compound which is fully soluble in the fluoropolyether compound, and (C) a hydrosilylation catalyst, is curable at room temperature or under heat, has a low viscosity and transparency, and exhibits improved water repellence, oil repellence, solvent resistance, chemical resistance and weather resistance.Type: GrantFiled: July 18, 2003Date of Patent: March 13, 2007Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Noriyuki Koike, Takashi Matsuda, Yasunori Sakano
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Patent number: 7129287Abstract: A method for preparing exfoliated clay nanocomposites by in-situ polymerization comprising the steps of (a) providing a mixture of at least one type of monomer and at least one type of organophilic clay; and (b) initiating an in-situ polymerization reaction in the mixture so as to cause the at least one type of monomer to polymerize thereby forming the exfoliated clay nanocomposite. The exfoliated clay nanocomposite produces an x-ray diffraction pattern that is substantially devoid of an intercalation peak. The exfoliated clay nanocomposite may then be used as a masterbatch.Type: GrantFiled: April 29, 2003Date of Patent: October 31, 2006Assignee: The Ohio State UniversityInventors: L. James Lee, Changchun Zeng
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Patent number: 7115683Abstract: The present invention relates to an organic-inorganic nanocomposite and preparation thereof and particularly to a method for preparing an organic-inorganic nanocomposite capable of uniformly dispersing a silicate compound in a polymer medium by adding monomers, an initiator, and an emulsifier to an ion-exchanged layered silicate salt that is prepared by adding a cationic initiator and a cationic chain transfer agent to a layered silicate compound to cause polymerization.Type: GrantFiled: January 22, 2003Date of Patent: October 3, 2006Assignee: LG Chem, Ltd.Inventors: Hee-Jung Kim, Dong-Ryul Kim
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Patent number: 7094830Abstract: A process for preparing an aqueous dispersion of composite particles composed of addition polymer and finely divided inorganic solid is described.Type: GrantFiled: June 14, 2002Date of Patent: August 22, 2006Assignee: BASF AktiengesellschaftInventors: Zhijian Xue, Harm Wiese
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Patent number: 7029755Abstract: The invention is drawn to silane copolymers prepared from the reaction of one or more polyisocyanates with one or more lubricious polymers having at least two functional groups, which may be the same or different, that are reactive with an isocyanate functional group and with one or more organo-functional silanes having at least two functional groups, which may be the same or different, that are reactive with an isocyanate functional group and at least one functional group reactive with a silicone rubber substrate. The silane copolymers of the invention can be used as coatings that are elastic when dry, lubricious when wet, and resist wet abrasion. These copolymers are useful as coatings for polysiloxane (rubber) and other difficult to coat substrates, especially for medical devices, such as catheters. These silane copolymers can contain active agents such as antimicrobials, pharmaceuticals, herbicides, insecticides, algaecides, antifoulants, and antifogging agents.Type: GrantFiled: May 30, 2003Date of Patent: April 18, 2006Assignee: C. R. Bard, Inc.Inventors: Richard N. Terry, Kevin Walsh
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Patent number: 7014918Abstract: The present invention discloses articles containing a coating composition, as well as methods of making and using the compositions which, when applied to a substrate and cured, provide articles having transparent abrasion resistant coatings, wherein the coatings have a matched refractive index to that of the substrate and can be tailored to control the extent of tint absorption (vide infra). The coating compositions comprise an aqueous-organic solvent mixture containing a mixture of hydrolysis products and partial condensates of an epoxy-functional silane, a carboxylic acid functional compound selected from the group consisting of carboxylic acids, multifunctional carboxylic acids, anhydrides, and combinations thereof, a metal oxide composite colloid, and a disilane. The coating compositions may further include a mixture of hydrolysis products and partial condensates of one or more silane additives, a colloidal silica material, and a tetrafunctional silane.Type: GrantFiled: November 12, 2003Date of Patent: March 21, 2006Assignee: SDC Technologies, Inc.Inventors: Karl W. Terry, Bryan S. Lembo
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Patent number: 7001642Abstract: A process for providing a coating composition which, provides an abrasive resistant coating having a refractive index of the substrate and controlled tintability. The composition which, when applied to at least one surface of a substrate comprises an aqueous-organic solvent mixture containing a mixture of hydrolysis products and partial condensates of an epoxy-functional silane, a carboxylic acid functional compound selected from the group consisting of carboxylic acids, multifunctional carboxylic acids, anhydrides, and combinations thereof, a metal oxide composite colloid, a disilane and an effective amount of a leveling agent for permitting the aqueous-organic mixture to spread on the substrate and thereby provide substantially uniform contact of the aqueous-organic mixture with the substrate. The coating compositions may further include a mixture of hydrolysis products and partial condensates of one or more silane additives, a colloidal silica material, and a tetrafunctional silane.Type: GrantFiled: November 12, 2003Date of Patent: February 21, 2006Assignee: SDC Technologies, Inc.Inventors: Karl W. Terry, Bryan S. Lembo
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Patent number: 6998462Abstract: Disclosed is a process that comprises contacting, in the presence of an esterification or transesterification or polycondensation catalyst composition, a toner, and a phosphorus compound, a carbonyl compound and an alcohol under a condition suitable for esterification, transesterification, or polymerization.Type: GrantFiled: June 11, 2003Date of Patent: February 14, 2006Assignee: E.I. du Pont de Nemours and CompanyInventors: Jiwen F. Duan, Donald E. Putzig
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Patent number: 6967235Abstract: In a process of producing PBT, a mixture of BDO and TPA is esterified in the presence of a catalyst solution, and the esterification product is polycondensated. To avoid the formation of deposits in the PBT, the catalyst solution contains 0.05 to 10 wt-% alkyl titanate, 85 to 99 wt-% BDO, 50 to 50,000 ppm bifunctional carboxylic acid equivalents and/or monofunctional hydroxycarboxylic acid equivalents and not more than 0.5 wt-% water.Type: GrantFiled: April 16, 2002Date of Patent: November 22, 2005Assignee: Zimmer AktiengesellschaftInventors: Eckhard Seidel, Fritz Wilhelm
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Patent number: 6960626Abstract: The invention provides intimate physical mixtures of macrocyclic polyester oligomer (MPO) and filler, as well as methods for their preparation and use. Improved dispersion of filler in a polymer matrix is achieved upon polymerization, and larger amounts of filler with high aspect ratio can be used. In one aspect, the invention provides mixtures of MPO with magnesium silicate. In another aspect, the invention provides a mixture of MPO, filler, and polymerization catalyst as a one-part, ready-to-polymerize material with a long shelf life. The one-part material can be used, for example, in the manufacture of parts without modification of existing processing equipment.Type: GrantFiled: June 3, 2004Date of Patent: November 1, 2005Assignee: Cyclics CorporationInventors: Tohru Takekoshi, Steven R. Bahr, Steven J. Winckler
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Patent number: 6924039Abstract: A composition comprising a hydrolyzable organosilicon compound and porous fine particles, a coating made from the composition and a laminated plate comprising a substrate and the coating are provided. The coating is superior in adhering properties to a substrate and is equipped with an adequate hardness.Type: GrantFiled: November 8, 2002Date of Patent: August 2, 2005Assignee: Sumitomo Chemical Company, LimitedInventor: Shinsuke Ochiai
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Patent number: 6914093Abstract: Polyamideimide coating compositions for magnet wire which exhibit solvent or varnish-induced craze resistance. The polyamideimide compositions include a compound selected from the group consisting of diacid compounds, trimellitic anhydrides, benzophenonetetracarcoxylic anhydrides and mixtures thereof, a diisocyanate compound, dihydroxyl compound, a trihydroxyl compound, a fluoropolymer, and a mineral filler.Type: GrantFiled: October 16, 2001Date of Patent: July 5, 2005Assignee: Phelps Dodge Industries, Inc.Inventor: James J. Xu
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Patent number: 6881764Abstract: There is disclosed a polyurethane composition with a glass cullet filler. The composition comprises at least one polyol, an isocyanate, a catalyst and glass cullet. The glass cullet has an average particle size of not greater than 100 mesh and not less than 325 mesh. A method of producing a polyurethane composition with a glass cullet filler is also disclosed.Type: GrantFiled: December 4, 2001Date of Patent: April 19, 2005Assignee: Textile Rubber & Chemical Company, Inc.Inventors: Van I. Doesburg, Milton Bradley Giddens
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Patent number: 6872767Abstract: A method of protecting a surface has the steps of providing a coating material containing sufficient aluminum flakes to provide a physical barrier to corrosion; and applying the coating material to a surface, thereby protecting the surface with an armor of aluminum. The method provides a coating material comprising about 3% to about 25% by weight of aluminum flakes, about 5% to about 20% by weight of aluminum flakes and about 7% to about 15% by weight of aluminum flakes. The aluminum flakes in the coating material can be non-leafing. A method of treating old concrete and rusting rebar, calls for providing a coating material containing sufficient aluminum flakes to provide a physical barrier to corrosion and polyisocyanates with sufficient unreacted NCO groups to scavenge water and provide a water-tight coating; and applying the coating material to the surfaces of damaged concrete and exposed rebar, thereby protecting the surfaces with an armor of aluminum.Type: GrantFiled: November 14, 2002Date of Patent: March 29, 2005Assignee: Rust Bullett, LLCInventor: Jacques T. LeFave
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Patent number: 6838170Abstract: An adhesive which comprises (1) 100 parts by weight of an epoxy resin and a hardener therefor, (2) 75 to 300 parts by weight of an epoxidized acrylic copolymer having a glycidyl (meth)acrylate unit content of 0.5 to 6 wt. %, a glass transition temperature of ?10° C. or higher and a weight average molecular weight of 100,000 or more and (3) 0.1 to 20 parts by weight of a latent curing accelerator; an adhesive member having a layer of the adhesive; an interconnecting substrate for semiconductor mounting having the adhesive member; and a semiconductor device containing the same.Type: GrantFiled: January 27, 2003Date of Patent: January 4, 2005Assignee: Hitachi Chemical Company, Ltd.Inventors: Yuko Tanaka, Yasushi Shimada, Teiichi Inada, Hiroyuki Kuriya, Kazunori Yamamoto, Yasushi Kumashiro, Keiji Sumiya
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Patent number: 6794447Abstract: A golf ball incorporates nanocomposite material, nanofiller material, or both, in its core, cover, or intermediate layers. Also, a method includes a step of blending into a composition for a golf ball nanocomposite material, nanofiller material or both. The nanocomposite and/or nanofiller materials impart favorable properties to materials used for golf balls, and they provide for greater versatility in usage than materials previously used. Particular compositions incorporating nanocomposite material also are described as suited for use in golf ball compositions.Type: GrantFiled: July 28, 2000Date of Patent: September 21, 2004Assignee: Taylor Made Golf Co., Inc.Inventors: Hyun Jin Kim, Cheol Jin Kim
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Patent number: 6777480Abstract: A networked polymer/clay alloy is produced from a monomer/clay mixture comprising a monomer, a cross-linking agent and clay particles. An initiator means is used to initiate polymerization of the monomer/clay mixture. The clay is chemically integrated with the polymer such that, on exposure to water, the networked polymer/clay alloy swells with substantially no clay separating from the alloy.Type: GrantFiled: March 26, 2003Date of Patent: August 17, 2004Assignee: Alberta Research Council Inc.Inventors: John Donald Payzant, Zhihong Zhou
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Patent number: 6753438Abstract: The specification describes preparation of materials comprising selected boron anions and processes using them as catalysts for condensation reaction of compounds having silicon-bonded hydroxy or alkoxy groups. Preferred anion compounds comprise borates incorporating quadri-substituted boron in which the substituents include highly halogenated hydrocarbon groups for example pentafluorinated phenyl groups or bis (trifluoromethyl) phenyl groups. Preferred anions are {B(C6F5)4}− and {B(C6(CF3)2H3)4}−.Type: GrantFiled: October 11, 2002Date of Patent: June 22, 2004Assignee: Dow Corning CorporationInventors: Richard Gregory Taylor, Stuart Leadey, Jean De La Croi Habimana
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Patent number: 6743510Abstract: A composition comprising a cationic polymerization compound and a porous fine particle, a coating made from the composition and a laminated plate comprising a substrate and the coating are provided. The coating is superior in adhering properties to a substrate and is equipped with an adequate hardness.Type: GrantFiled: November 7, 2002Date of Patent: June 1, 2004Assignee: Sumitomo Chemical Company, LimitedInventor: Shinsuke Ochiai
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Patent number: 6737472Abstract: A reinforced networked polymer/clay alloy composite is produced by contacting a monomer/clay mixture with a reinforcing agent. The monomer/clay mixture comprises a monomer, a cross-linking agent and clay particles. An initiator means is used to initiate polymerization of the monomer/clay mixture, while the cross-linking agent concurrently acts to network oligomeric and polymeric species formed during polymerization to produce a networked polymer/clay alloy in the presence of the reinforcing agent. The networked polymer/clay alloy is intimately integrated with the reinforcing agent such that, on exposure to water, the networked polymer/clay alloy swells with substantially no clay separating from the composite.Type: GrantFiled: April 15, 2003Date of Patent: May 18, 2004Assignees: Alberta Research Council Inc., Nilex, Inc.Inventors: Zhihong Zhou, John Donald Payzant, Walter Van Woudenberg
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Patent number: 6737458Abstract: The invention relates to silicone compositions which can be crosslinked to give elastomers and which comprises the constituents (A) from 20 to 99% by weight of polyorganosiloxane containing at least two alkenyl groups per molecule and having a viscosity at 25° C. of from 0.1 to 500,000 Pa.s, (B) from 1 to 80% by weight of non-reinforcing filler having a mean particle size of from 0.1 to 200 &mgr;m and a specific surface area of <100 m2/g, (C) a crosslinking component comprising (C1) an organic peroxide, or (C2) an organosilicon compound containing at least two SiH functions per molecule in combination with a hydrosilylation catalyst, and (D) a nitrogen compound which is selected from amino, ammonium and amido compounds and nitrogen-containing organosilicon compounds. The compositions exhibit improved thermal stability and resistance to oil at elevated temperatures.Type: GrantFiled: January 8, 2003Date of Patent: May 18, 2004Assignee: Wacker-Chemie GmbHInventors: Christof Woerner, Richard Birneder
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Patent number: 6730388Abstract: In one embodiment the present invention provides a coated substrate comprising a substrate, a radiation-cured coating or a thermally-cured on at least a portion of the substrate, wherein the coating comprises an inherent macroscopic texture. In another embodiment, the present invention provides a pre-cured coating mixture comprising a radiation-curable resin and an initiator, or a thermally-curable resin and thermal initiator, wherein the radiation- or thermally-curable resin and the respective initiator form a pre-cured coating mixture capable of forming a macroscopic texture upon application of the mixture on a substrate. In another embodiment the present invention provides a pre-cured coating mixture comprising a radiation- or thermally-curable resin, an initiator, and texture-producing particles having an effective size to provide a macroscopic texture upon application of the mixture on a substrate.Type: GrantFiled: January 19, 2001Date of Patent: May 4, 2004Assignee: Congoleum CorporationInventors: Richard C. MacQueen, Loyd J. Burcham, Anthony A. Parker, Deborah A. Sciangola, Donald B. Henry, Donald C. Ferguson
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Patent number: 6723439Abstract: A curable composition comprising (A) an organopolysiloxane having functional groups capable of condensation reaction at both molecular terminals thereof and (B-1) a hydrophobic silica and a hydrophilic silica. A curable composition comprising (A) an organopolysiloxane having functional groups capable of condensation reaction at both molecular terminals thereof and (B-2) a hydrophobic silica, wherein the hydrophobic silica (B-2) is thermally treated together with the organopolysiloxane (A).Type: GrantFiled: March 20, 2002Date of Patent: April 20, 2004Assignees: Chugoku Marine Paints, Ltd., Shin-Etsu Chemical Co., Ltd.Inventors: Katsuyoshi Amidaiji, Toshiharu Yamamoto, Hironobu Muramatsu
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Patent number: 6723825Abstract: The invention relates to a process for preparing a liquid melamine urea formaldehyde resin that has long term stability. The invention also relates to a liquid MUF resin with a high formaldehyde and melamine content. The invention further relates to a liquid suspension hardener including a catalyst, a thickener, a filler, and water. The invention also relates to a adhesive composition for use in wood bonding that is made by adding a hardener to the resin.Type: GrantFiled: February 25, 2003Date of Patent: April 20, 2004Assignee: Cytec Technology Corp.Inventors: Huide Dennis Zhu, William Jacobs, III, Robert G. Lees, Luis Mendonca, Roger C. Rasch
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Publication number: 20040063855Abstract: An aqueous composition comprising at least 18% surfactant and colloidal inorganic clay. This composition is stable with regard to phase separation at 40° C. for at least three months and exhibits increased low-shear viscosity relative to a composition without clay. The composition comprises at least one lipophilically-modified copolymer containing acrylic acid residues and C2-C4 alkyl (meth)acrylate residues.Type: ApplicationFiled: September 18, 2003Publication date: April 1, 2004Inventor: Thomas Richard Tepe
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Patent number: 6713547Abstract: The present invention relates to processes for preparing a nanocomposite comprising: a. preparing an organoclay material by reacting a swellable layered clay with an onium ion represented by Formula (I): wherein i) M is nitrogen or phosphorus, ii) R1 is a straight or branched alkyl group having at least 8 carbon atoms, iii) R2, R3, and R4 are independently selected from organic or oligomeric ligands or hydrogen, and iv) at least one of R2, R3, and R4 comprises an alkylene oxide group having from 2 to 6 carbon atoms or a polyalkylene oxide group, and b. melt mixing the organoclay material with an expanding agent, and c. melt extruding the expanded organoclay and a polymer to provide a nanocomposite.Type: GrantFiled: March 6, 2002Date of Patent: March 30, 2004Assignee: University of South Carolina Research FoundationInventors: Robert Boyd Barbee, James Christopher Matayabas, Jr., Jack Wesley Trexler, Jr., Rodney Layne Piner, John Walker Gilmer, Gary Wayne Connell, Jeffrey Todd Owens, Sam Richard Turner
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Patent number: 6713601Abstract: Physical properties, such as melting temperature of MPO compositions may be significantly modified by modifying the weight percentage of one or more of the constituent MPOs. For example, removal of a significant portion of the tetramer can afford low melting MPO compositions. In one aspect, the invention is related to a method for modifying a physical property of a MPO composition that includes the steps of (a) providing a composition that has at least two species of MPOs, and (b) changing the weight percentage of at least one species of the MPOs in the composition. In another aspect, the invention is related to a MPO composition that includes at least two species of MPOs where a species of the MPOs having the highest melting temperature is present in an amount less than or equal to 5%.Type: GrantFiled: June 3, 2002Date of Patent: March 30, 2004Assignee: Cyclics CorporationInventor: Peter D. Phelps
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Patent number: 6683122Abstract: A filler mixture comprising an organophilic layer silicate obtainable by treatment of a natural or synthetic layer silicate with a swelling agent selected from sulfonium, phosphonium and ammonium compounds (salts of melamine compounds and cyclic amidine compounds being excluded as ammonium compounds) and a mineral filler different therefrom, yields, in combination with thermosetting resins, nanocomposites having improved mechanical properties.Type: GrantFiled: January 14, 2002Date of Patent: January 27, 2004Assignee: Vantico A&T US Inc.Inventors: Carsten Zilg, Rolf MĂĽlhaupt, JĂĽrgen Finter
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Patent number: 6680123Abstract: An embedding resin embeds an electronic part in an object and has a dielectric constant of about 5 or less and tan &dgr; of about 0.08 or less.Type: GrantFiled: December 21, 2001Date of Patent: January 20, 2004Assignee: NGK Spark Plug Co., Ltd.Inventors: Hiroki Takeuchi, Toshifumi Kojima, Kazushige Obayashi, Hisahito Kashima
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Patent number: 6649690Abstract: The present invention generally relates to a process polymerizing a feedstock which comprises glycerol or derivatives thereof, said process comprising heating said feedstock, in the presence of at least one synthetic magnesium saponite clay catalyst in the H form, to a temperature at which condensation polymerization takes place, for a time sufficient to produce polymers of glycerol or derivatives thereof.Type: GrantFiled: November 25, 2002Date of Patent: November 18, 2003Assignee: Akzo Nobel N.V.Inventor: Axel Kraft
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Publication number: 20030207981Abstract: A reinforced networked polymer/clay alloy composite is produced by contacting a monomer/clay mixture with a reinforcing agent. The monomer/clay mixture comprises a monomer, a cross-linking agent and clay particles. An initiator means is used to initiate polymerization of the monomer/clay mixture, while the cross-linking agent concurrently acts to network oligomeric and polymeric species formed during polymerization to produce a networked polymer/clay alloy in the presence of the reinforcing agent. The networked polymer/clay alloy is intimately integrated with the reinforcing agent such that, on exposure to water, the networked polymer/clay alloy swells with substantially no clay separating from the composite.Type: ApplicationFiled: April 15, 2003Publication date: November 6, 2003Applicants: Alberta Research Council Inc., Nilex, Inc.Inventors: Zhihong Zhou, John Donald Payzant, Walter Van Woudenberg
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Publication number: 20030191237Abstract: A networked polymer/clay alloy is produced from a monomer/clay mixture comprising a monomer, a cross-linking agent and clay particles. An initiator means is used to initiate polymerization of the monomer/clay mixture. The clay is chemically integrated with the polymer such that, on exposure to water, the networked polymer/clay alloy swells with substantially no clay separating from the alloy.Type: ApplicationFiled: March 26, 2003Publication date: October 9, 2003Applicant: Alberta Research Council Inc.Inventors: John Donald Payzant, Zhihong Zhou
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Patent number: 6620861Abstract: There are provided an inorganic filler, multi-functional filler, an organic compound filler, a modified filler, and a dental coloring filler suitable in use as a filler in a dental composition, compositions having a resin matrix of an organic polymer material, as well as a process for producing the same. Disclosed are an inorganic filler which comprises an inorganic fine particle, wherein the surface of the inorganic fine particle is covered with polysiloxane. Also disclosed is a multi-functional filler which comprises an inorganic fine particle containing an acid reactive element, wherein a cement reactive phase is formed on the surface of the inorganic fine particle, and the cement reactive phase is further covered with polysiloxane. Also disclosed is an organic compound filler which comprises an organic-inorganic polymer particle or an organic polymer particle, wherein the surface of the organic-inorganic polymer particle or an organic polymer particle is covered with an inorganic film.Type: GrantFiled: November 17, 2000Date of Patent: September 16, 2003Assignee: Kabushiki Kaisha ShofuInventors: Toshiyuki Nakatuka, Yasuhisa Yasuda, Katsuya Kimoto, Mitsuharu Mizuno, Noriyuki Negoro
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Patent number: 6610780Abstract: A networked polymer/clay alloy is produced from a monomer/clay mixture comprising a monomer, a cross-linking agent and clay particles. An initiator means is used to initiate polymerization of the monomer/clay mixture. The clay is chemically integrated with the polymer such that, on exposure to water, the networked polymer/clay alloy swells with substantially no clay separating from the alloy.Type: GrantFiled: May 26, 2000Date of Patent: August 26, 2003Assignee: Alberta Research Council Inc.Inventors: John Donald Payzant, Zhihong Zhou
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Patent number: 6610781Abstract: A reinforced networked polymer/clay alloy composite is produced by contacting a monomer/clay mixture with a reinforcing agent. The monomer/clay mixture comprises a monomer, a cross-linking agent and clay particles. An initiator means is used to initiate polymerization of the monomer/clay mixture, while the cross-linking agent concurrently acts to network oligomeric and polymeric species formed during polymerization to produce a networked polymer/clay alloy in the presence of the reinforcing agent. The networked polymer/clay alloy is intimately integrated with the reinforcing agent such that, on exposure to water, the networked polymer/clay alloy swells with substantially no clay separating from the composite.Type: GrantFiled: May 26, 2000Date of Patent: August 26, 2003Assignees: Alberta Research Council Inc., Nilex, Inc.Inventors: Zhihong Zhou, John Donald Payzant, Walter Van Woudenberg
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Patent number: 6596401Abstract: The invention is drawn to silane copolymers prepared from the reaction of one or more polyisocyanates with one or more lubricious polymers having at least two functional groups, which may be the same or different, that are reactive with an isocyanate functional group and with one or more organo-functional silanes having at least two functional groups, which may be the same or different, that are reactive with an isocyanate functional group and at least one functional group reactive with a silicone rubber substrate. The silane copolymers of the invention can be used as coatings that are elastic when dry, lubricious when wet, and resist wet abrasion. These copolymers are useful as coatings for polysiloxane (rubber) and other difficult to coat substrates, especially for medical devices, such as catheters. These silane copolymers can contain active agents such as antimicrobials, pharmaceuticals, herbicides, insecticides, algaecides, antifoulants, and antifogging agents.Type: GrantFiled: May 10, 2000Date of Patent: July 22, 2003Assignee: C. R. Bard Inc.Inventors: Richard N. Terry, Kevin Walsh
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Publication number: 20030119981Abstract: A slush molding process in which the moldable thermoplastic composition powder dosed to the mold is prepared by blending ethylene carboxylic acid copolymers or ionomers with ethylene/glycidyl acrylate or methacrylate copolymer and cross-linking promoter at a temperature and for a time that does not cause significant cross-linking prior to dosing to mold, which is held for sufficient time and temperature to cause cross-linking in-situ, and optionally, other additives including release agents.Type: ApplicationFiled: October 31, 2002Publication date: June 26, 2003Inventors: Karlheinz Hausmann, George K. Kodokian, George W. Prejean
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Patent number: 6559272Abstract: Disclosed is a method for preparing polyester resins copolymerized with glycol for modification such as 1,4-cyclohexanedimethanol, in which the content of said glycol ingredient for modification ranges from 20 to 80 mol % of the total glycol content. Dicarboxylic acid such as terephthalic acid is esterified with ethylene glycol and said glycol for modification. The esterification product is subjected to polycondensation in the presence of a titanium dioxide/silicon dioxide coprecipitate catalyst, said catalyst being in the form of 4% or less strength by weight suspension in glycol. The copolyester prepared as above shows excellent transparency and color properties in addition to being produced at high efficiency.Type: GrantFiled: January 24, 2002Date of Patent: May 6, 2003Assignee: SK Chemicals Co. Ltd.Inventors: Jae-Young Jeon, Yoon-Hee Hong, Sung-Gi Kim
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Patent number: 6548625Abstract: The invention relates to a process for preparing a liquid melamine urea formaldehyde resin that has long term stability. The invention also relates to a liquid MUF resin with a high formaldehyde and melamine content. The invention further relates to a liquid suspension hardener including a catalyst, a thickener, a filler, and water. The invention also relates to a adhesive composition for use in wood bonding that is made by adding a hardener to the resin.Type: GrantFiled: March 23, 2001Date of Patent: April 15, 2003Assignee: Cytec Technology Corp.Inventors: Huide Dennis Zhu, William Jacobs, III, Robert G. Lees, Luis Mendonca, Roger C. Rasch
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Patent number: 6544652Abstract: Disclosed are a cyanate ester based resin-containing insulating composition, an insulating film made therefrom and a multilayer printed board having the insulating film. The insulating composition comprises 1-75% by weight of epoxy resin, 1-60% by weight of cyanate ester resin, up to 20% by weight of a filler, a curing agent and a metal catalyst, from which the insulating film can be prepared, and the film-applied multilayer printed board can be manufactured. Use of epoxy resins having excellent electrical properties and cyanate ester based resins having high heat resistance causes the reaction of hydroxy groups in some epoxy resins with cyanate ester, thus forming such net structures as to increase the heat resistance of the insulating composition, the insulating film and the multilayer printed circuit board.Type: GrantFiled: June 13, 2001Date of Patent: April 8, 2003Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang-Jun Bae, Choong-Nam Park
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Patent number: 6538092Abstract: The present invention discloses compositions as well as methods of making and using said compositions, having improved stability which, when applied to a variety of substrates and cured, form transparent coatings having abrasion resistant properties and a matched refractive index to that of the substrate. The compositions comprise an aqueous-organic solvent mixture containing a mixture of hydrolysis products and partial condensates of an epoxy-functional silane, a carboxylic acid functional compound selected from the group consisting of carboxylic acids, multifunctional carboxylic acids, anhydrides, and combinations thereof, a metal oxide composite colloid, a colloidal silica material, and a tetrafunctional silane. The coating compositions of the present invention may further include a mixture of hydrolysis products and partial condensates of one or more silane additives.Type: GrantFiled: April 20, 2000Date of Patent: March 25, 2003Assignee: SDC Coatings, Inc.Inventors: Karl W. Terry, Bryan S. Lembo
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Patent number: 6515099Abstract: The polyamide resin shaped article of the present invention is produced by preliminarily melt-kneading a m-xylylene-containing polyamide resin and a layered silicate subjected to a swelling treatment to prepare a resin composition containing the layered silicate in high concentration, melt-kneading the resin composition with another portion of m-xylylene-containing polyamide resin, and then formed into the shaped article. Since the amount of the m-xylylene-containing polyamide resin exposed to the heat history twice in the melt-kneading steps is minimized, the gel formation due to the thermal degradation can be reduced and the lowering of the relative viscosity due to the decrease of the molecular weight caused by the thermal degradation of the m-xylylene-containing polyamide resin is prevented.Type: GrantFiled: May 18, 2001Date of Patent: February 4, 2003Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kazunobu Sato, Koji Yamamoto, Kazunobu Maruo, Satoshi Okada
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Publication number: 20030004298Abstract: The invention relates to a process for preparing a liquid melamine urea formaldehyde resin that has long term stability. The invention also relates to a liquid MUF resin with a high formaldehyde and melamine content. The invention further relates to a liquid suspension hardener including a catalyst, a thickener, a filler, and water. The invention also relates to a adhesive composition for use in wood bonding that is made by adding a hardener to the resin.Type: ApplicationFiled: March 23, 2001Publication date: January 2, 2003Inventors: Huide Dennis Zhu, William Jacobs, Robert G. Lees, Luis Mendonca, Roger C. Rasch
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Patent number: 6498200Abstract: A cationically polymerizable resin composition which comprises (A) a compound containing at least one ring selected from the group consisting of an oxirane ring and an oxetane ring; (B) an onium salt; (C) an organic peroxide; and (D) an alkaline filler except for a hydroxide.Type: GrantFiled: January 11, 2000Date of Patent: December 24, 2002Assignee: Namics CorporationInventors: Osamu Suzuki, Haruyuki Yoshii, Hisao Kondo, Kenichi Suzuki
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Patent number: 6479582Abstract: A rubber composition is obtained which exhibit improved strength, abrasion resistance and antistatic properties, as well as low rolling resistance. The rubber composition is characterized as being rendered conductive by incorporating into rubber a silica filler having a conductive surface layer as composed of carbon or conductive tin oxide.Type: GrantFiled: November 18, 1999Date of Patent: November 12, 2002Assignee: Otsuka Chemical Co., Ltd.Inventors: Yukiya Hareyama, Hidetoshi Ogawa
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Patent number: 6479563Abstract: A radiation—and/or heat-curable adhesive with high thermal conductivity includes the following recipe: 19 to 40 wt % of a difunctional acrylated, aromatic polyurethane; 9 to 25 wt % of (2-hydroxypropyl) acrylate or methacrylate; 1 to 5 wt % of one or more photoinitiators; 35 to 70 wt % of one or more mineral fillers; 0.5 to 3 wt. % of an SiO2-containing thixotropizing agent; and 0.5 to 2 wt % of an organic peroxide.Type: GrantFiled: January 30, 2001Date of Patent: November 12, 2002Assignee: Robert Bosch GmbHInventors: Gerhard Liebing, Volker Brielmann, Achim Battermann, Juergen Perl
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Patent number: 6436548Abstract: Physical properties, such as melting temperature of MPO compositions may be significantly modified by modifying the weight percentage of one or more of the constituent MPOs. For example, removal of a significant portion of the tetramer can afford low melting MPO compositions. In one aspect, the invention is related to a method for modifying a physical property of a MPO composition that includes the steps of (a) providing a composition that has at least two species of MPOs, and (b) changing the weight percentage of at least one species of the MPOs in the composition. In another aspect, the invention is related to a MPO composition that includes at least two species of MPOs where a species of the MPOs having the highest melting temperature is present in an amount less than or equal to 5%.Type: GrantFiled: September 12, 2000Date of Patent: August 20, 2002Assignee: Cyclics CorporationInventor: Peter D. Phelps