Material Contains A Group Viii Metal Atom Patents (Class 528/15)
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Patent number: 6803440Abstract: The invention relates to metal complexes of formula (I) These complexes are particularly suitable for use as catalysts of hydrosilylation reactions.Type: GrantFiled: September 13, 2002Date of Patent: October 12, 2004Assignee: Rhodia ChimieInventors: Istvan Marko, Sebastien Sterin
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Patent number: 6794045Abstract: A system for making a coated substrate, comprising a coating composition, said coating composition comprising an alkenyl functional compound and a hydride functional compound, and a substrate having a precious metal catalyst disposed on at least one surface of the substrate in an amount effective to catalyze cure of the coating composition when the coating composition is applied to the substrate wherein the substrate is selected from papers, polymers films, metal foils and combinations thereof.Type: GrantFiled: June 12, 2002Date of Patent: September 21, 2004Assignee: General Electric CompanyInventors: Larry N. Lewis, Michael J. O'Brien
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Patent number: 6794444Abstract: A silicone emulsion composition of the addition reaction curing type comprising a major proportion of an organopolysiloxane containing at least two alkenyl radicals and T units and having a viscosity of 5-100 mPa·s, a minor proportion of another organopolysiloxane containing at least two alkenyl radicals and having a 30% toluene diluted viscosity of 1,000-10,000 mPa·s, an organohydrogenpolysiloxane, a platinum radical metal catalyst, a surfactant, and water cures into a coating that adheres well to plastic film substrates. The cured coating exhibits release properties to pressure-sensitive adhesives and can be utilized as release film.Type: GrantFiled: December 26, 2002Date of Patent: September 21, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kenji Yamamoto, Shinji Irifune, Tutomu Nakajima, Masahiko Ogawa
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Patent number: 6794464Abstract: A membrane or matrix for controlling the permeation rate of a drug, where the membrane or matrix includes a siloxane-based elastomer composition which contains at least one elastomer and optionally a non-crosslinked polymer. The elastomer composition includes poly(alkylene oxide) groups, and the poly(alkylene oxide) groups are present as blocks in a chain of the elastomer or the polymer, or as blocks and alkoxy-terminated grafts of polysiloxane units, the blocks or blocks and grafts being linked to the polysiloxane units by silicon-carbon bonds, with at least three blocks being present in the elastomer or polymer chain. Methods for the preparation of the elastomer composition are also disclosed.Type: GrantFiled: November 18, 2002Date of Patent: September 21, 2004Assignee: Schering OyInventors: Harri Jukarainen, Tommi Markkula, Juha Ala-Sorvari, Matti Lehtinen, Jarkko Ruohonen
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Patent number: 6783858Abstract: Organopolysiloxane compositions that cure by the addition reaction of silicon-bonded lower alkenyl radicals with silicon-bonded hydrogen atoms and which exhibit select adhesion to a variety of substrates. The compositions comprise an adhesion promoting mixture comprising an epoxy-functional compound, soluble polydiorganosiloxanes, polycycloorganosiloxanes (linear and cyclic) and and hydroxy end blocked hydrocarbons (glycols) thus giving release characteristics to metal substrates while maintaining adhesion to a thermoplastic substrate. Additionally, an additive may be used to produce surface lubricity after curing.Type: GrantFiled: November 19, 2001Date of Patent: August 31, 2004Assignee: Bryant Rubber CorporationInventor: Rick A. Ziebell
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Patent number: 6777485Abstract: The present invention provides a novel sealant and a novel curable resin composition providing for sufficiently high mechanical strength, adhesive strength, rubber elasticity and good workability and a direct glazing method utilizing the composition, which comprises (I) a reactive silicon group-containing polyether oligomer such that the reactive silicon group exists exclusively at the molecular chain terminus and the introduction rate of the reactive silicon group into the molecular chain terminus is not less than 85% as determined by 1H-NMR analysis and (II) a reinforcing filler.Type: GrantFiled: November 7, 2001Date of Patent: August 17, 2004Assignee: Kaneka CorporationInventors: Hiroshi Ito, Hidetoshi Odaka, Hiroshi Iwakiri, Fumio Kawakubo, Hideharu Jyono
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Patent number: 6777566Abstract: A process for producing platinum alkenyl polysiloxane complex compounds, especially platinum divinyltetramethyldisiloxane, by reacting a haloplatinum compound with at least one alkenyl polysiloxane in the initial presence of platinum in the form of a platinum complex compound as an autocatalyst and in the initial presence of at least one base in an organic solvent or mixture of organic solvents that can be oxidized by the haloplatinum compound.Type: GrantFiled: October 16, 2002Date of Patent: August 17, 2004Assignee: W. C. Heraeus GmbH & Co. KGInventors: Ramona Reitz, Richard Walter
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Publication number: 20040132947Abstract: Addition crosslinkable organopolysiloxane compositions which cure to organopolysiloxane elastomers of high elongation at break and high tear resistance contain a high viscosity, alkenyl-terminated, and substantially pendant alkenyl group-free organopolysiloxane, an organopolysiloxane having pendant alkenyl groups and optionally alkenyl-terminal groups, an Si—H functional crosslinker, and a hydrosilylation catalyst.Type: ApplicationFiled: November 3, 2003Publication date: July 8, 2004Inventors: Frank Achenbach, Christof Worner, Birgit Schacherbauer, Norbert Egerter
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Patent number: 6756127Abstract: A primer composition comprising (A) a diorganopolysiloxane having an average degree of polymerization of 500-2,000 and alkenyl groups at both ends of its molecular chain in an amount of 0.001-0.005 mol per 100 g of the diorganopolysiloxane, (B) an organohydrogenpolysiloxane having at least two SiH groups in a molecule, (C) a platinum base curing catalyst, and (D) a retarder is effective for improving the adhesion between various plastic films and silicone pressure-sensitive adhesives and thus forming satisfactory pressure-sensitive adhesive tapes.Type: GrantFiled: October 11, 2002Date of Patent: June 29, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yasuyoshi Kuroda, Shunji Aoki, Masahiko Ogawa
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Patent number: 6753401Abstract: A process for the production of a silicon-containing polymer having a main chain of oxygen atoms, organic groups and Si—H and a process for the production of a silicon-containing polymer having a main chain of oxygen atoms, organic groups and disubstituted silicon atoms are disclosed. The silicon-containing polymer may be produced by dehydrogenative polymerization of quinone and/or diol with trihydrosilane or dihydrosilane in the presence of a palladium-containing catalyst.Type: GrantFiled: August 6, 2002Date of Patent: June 22, 2004Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Poreddy Narsi Reddy, Teruyuki Hayashi, Masato Tanaka
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Patent number: 6749898Abstract: There are disclosed a casting film which is used for producing a ceramic green sheet and which comprises a substrate film and a cured layer formed thereon of an addition reaction type silicone composition containing a photosensitizer, in which the cured layer is formed by heat-treating a layer of a photosensitizer-containing addition reaction type silicone composition in a coating amount expressed in terms of solid content in the range of 0.01 to 0.2 g/m2 at a temperature in the range of 40 to 120° C., followed by a treatment with ultraviolet ray irradiation. The casting film is excellent in coatability of ceramic slurry and releasability of ceramic green sheet, and is imparted with high flatness which has heretofore never been realizable by any of conventional casting films.Type: GrantFiled: September 7, 2001Date of Patent: June 15, 2004Assignee: Lintec CorporationInventors: Toru Nakamura, Tomishi Shibano
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Patent number: 6750279Abstract: A high tear strength, low compression set, low cost heat curable silicon elastomer.Type: GrantFiled: August 11, 2000Date of Patent: June 15, 2004Assignee: General Electric CompanyInventor: Yi-Feng Wang
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Patent number: 6743884Abstract: Dicarboxy functionalized polyorganosiloxanes having the formula X(R4R5SiO)p(R6ASiO)qY (I) wherein the X end group represents a triorganosiloxyl end group of formula R1R2R3SiO, or a Z end group, wherein Z represents —OH the Y end group represents a triorganosilyl end group of formula SiR3R2R1, or a W end group, wherein W represents —H R1 to R6 represent a C1-C8 alkyl or phenyl radical, preferably methyl A represents the dicarboxy radical of formula (I′) or salts thereof —(CH2)3—CH(COOH)—CH2COOH (I′) p is an average value ranging from 0 to 1000 q is an average value ranging from 1 to 100 the ratio of the number of Z and W end groups to the total number of X and Y end groups being from 0/100 to 75/100. They can be used for the water repellent treatment of surfaces, particularly inorganic surfaces or surfaces containing alkaline or earth-alkaline metal, and as anti-corrosion additives for the treatment of metal surfaces.Type: GrantFiled: May 2, 2003Date of Patent: June 1, 2004Assignee: Rhodia ChimieInventor: Philippe Olier
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Patent number: 6743831Abstract: An implantable medical catheter comprising at least one fluid passageway and a cured elastomer composition is disclosed. The cured elastomer composition is obtained by cross-linking an uncured blend composition that comprises an intimately admixed mixture that comprises the following components: (A) silica that had been silyliated by treatment and contains trialkylsilyl groups; (B) a polysiloxane copolymer; (C) a catalyst, and (D) an organohydrogen polysiloxane cross-linker, the catalyst and the cross-linker being present in the uncured blend composition in sufficient amount to cause the cross-linking reaction to occur.Type: GrantFiled: April 23, 2002Date of Patent: June 1, 2004Assignee: Medtronic, Inc.Inventor: James M. Olsen
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Patent number: 6740405Abstract: A liquid form addition curing type silicone rubber composition for roll forming purposes is provided which displays excellent stability and little variation in viscosity over time at room temperature, and yet also offers excellent curability at high temperature.Type: GrantFiled: March 14, 2002Date of Patent: May 25, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Shigeki Shudo
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Patent number: 6740360Abstract: A method of making a coated substrate which includes the steps of applying a layer of a coating composition, said coating composition comprising an alkenyl functional organopolysiloxane and a hydride functional organopolysiloxane, to the substrate, said substrate comprising a catalytically effective amount of a precious metal catalyst, and allowing the layer to cure, allows the use of a non-catalyzed coating bath having a very long useful life, while providing a highly reactive coating layer that may be rapidly cured at low temperature.Type: GrantFiled: June 12, 2002Date of Patent: May 25, 2004Assignee: General Electric CompanyInventors: Larry N. Lewis, Michael J. O'Brien
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Patent number: 6737482Abstract: The present invention is to provide a curable resin composition comprising (I) a reactive silicon group-containing polyoxyalkylene polymer wherein a introduction rate of a reactive silicon group into molecular chain terminus is not less than 85% as analyzed by 1H-NMR spectrometry and (II) an epoxy resin. The curable resin obtained from this composition reflects improvements in tensile strength and tensile shear bond strength and in adhesion to various substrates.Type: GrantFiled: November 20, 2001Date of Patent: May 18, 2004Assignee: Kaneka CorporationInventors: Katsuhiro Ando, Toru Inaya, Masato Kusakabe, Hiroshi Iwakiri
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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: 6734250Abstract: A silicone rubber composition comprising (A) an organopolysiloxane having at least two aliphatic unsaturated groups, (B) finely divided silica, (C) a metal powder or an electrically conductive metal-plated powder, (D) an adhesive aid, and (E) a curing agent cures into silicone rubber having a low volumetric resistivity and a stable high conductivity, exhibiting improved adhesion to resin and metal substrates, and thus suitable as electrically conductive parts and electrical contacts in electrical equipment.Type: GrantFiled: August 17, 2001Date of Patent: May 11, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Syuuichi Azechi, Tsutomu Nakamura
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Patent number: 6727338Abstract: A hydrido-silicone is incompletely reacted with (preferably) a long chain olefin under hydrosilylation conditions to produce a partially substituted hydrido-silicone that is further reacted under hydrosilylation conditions with a vinyl containing MQ resin to partially consume the remaining hydride species which is then reacted under hydrosilylation conditions to consume the remaining hydride species with a long chain diolefin to produce a composition that is useful as an anti-mist agent in the coating of flexible supports.Type: GrantFiled: November 15, 2002Date of Patent: April 27, 2004Assignee: General Electric CompanyInventors: John Alfred Kilgour, Edwin C. Cua, John A. Cummings
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Publication number: 20040068076Abstract: A silicone adhesive comprises (A) a reaction mixture obtained by subjecting a partially condensed mixture of (i) a hydroxy-terminated diorganopolysiloxane and (ii) an organopolysiloxane copolymer having hydroxyl and alkenyl radicals and comprising R33SiO1/2 units and SiO2 units, and (iii) a silicon compound having a silicon atom-bonded hydrogen atom and a silicon atom-bonded alkoxy radical to addition reaction in the presence of a platinum catalyst and (B) a crosslinking agent. The silicone adhesive exhibits at the initial a tackiness sufficient to fixedly secure a substrate. By press bonding another substrate to the adhesive-bearing substrate and heating them, the substrates can be firmly bonded together.Type: ApplicationFiled: October 2, 2003Publication date: April 8, 2004Inventors: Shouhei Kozakai, Akio Suzuki
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Publication number: 20040068075Abstract: Processes have been developed for the manufacture of polyhedral oligomeric silsesquioxanes (POSS), polysilsesquioxanes, polyhedral oligomeric silicates (POS), and siloxane molecules bearing reactive ring-strained cyclic olefins (e.g. norbornenyl, cyclopentenyl, etc. functionalities). The preferred manufacturing processes employ the silation of siloxides (SiOA, where A=H, alkaline or alkaline earth metals) with silane reagents that contain at least one reactive ring-strained cyclic olefin functionality [e.g., X3-ySi(CH3)y(CH2)2 where y=1-2 and X=OH, Cl, Br, I, alkoxide OR, acetate OOCR, peroxide OOR, amine NR2, isocyanate NCO, and R]. Alternatively, similar products can be prepared through hydrosilation reactions between silanes containing at least one silicon-hydrogen bond (Si—H) with ring-strained cyclic olefin reagents [e.g., 5-vinyl, 2 norbornene CH2═CH, cyclopentadiene].Type: ApplicationFiled: August 23, 2001Publication date: April 8, 2004Applicant: Hybrid PlasticsInventors: Joseph D. Lichtenhan, Joseph J. Schwab, Yi-Zong An, William Reinerth, Frank J. Feher
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Patent number: 6716533Abstract: The present invention relates to curable alkenyl based silicone release coating compositions having improved adhesion to paper and polymeric substrates. Furthermore the present invention relates to the process for making a silicone release coating with improved adhesion to paper and polymeric substrates.Type: GrantFiled: August 27, 2001Date of Patent: April 6, 2004Assignee: General Electric CompanyInventors: Roy M. Griswold, Slawomir Rubinsztaijn, Michael J. O'Brien
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Patent number: 6713205Abstract: A sealing material for sealing the edges on at least one side of a solid polymer fuel cell separator is provided. This sealing material includes (A) an organopolysiloxane with at least two alkenyl groups bonded to silicon atoms within each molecule, (B) an organohydrogenpolysiloxane with at least two hydrogen atoms bonded to silicon atoms within each molecule, (C) a fumed silica with a specific surface area of 50 to 250 m2/g which has undergone surface treatment with at least two different surface treatment agents, and (D) an addition reaction catalyst. This sealing material displays excellent moldability, heat resistance and elasticity, has a compression set within air and within an acidic aqueous solution which can be suppressed to a low value, and produces an excellent seal, particularly in an acidic aqueous solution.Type: GrantFiled: April 16, 2002Date of Patent: March 30, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Noriyuki Meguriya, Yujiro Taira
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Patent number: 6706811Abstract: The invention discloses an efficient and convenient method for the preparation of an aqueous emulsion of an organopolysiloxane having long-chain alkyl groups bonded to the silicon atoms. Instead of dispersing and emulsifying an organopolysiloxane modified in advance with long-chain alkyl groups in an aqueous medium, as is the case in the prior art method, an organohydrogenpolysiloxane having silicon-bonded hydrogen atoms and a long-chain &agr;-olefin compound are co-emulsified in an aqueous medium containing a surface active agent and this aqueous emulsion is heated under agitation with addition of a catalytic platinum compound so as to effect the in situ hydrosilation reaction between the silicon-bonded hydrogen atoms in the organohydrogenpolysiloxane and the ethylenically unsaturated bonds in the &agr;-olefin compound. The aqueous emulsion prepared by the inventive method exhibits excellent stability against long-term storage, dilution with water and mechanical shearing force.Type: GrantFiled: June 3, 2002Date of Patent: March 16, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Hiroshi Ohashi
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Patent number: 6706840Abstract: A method for preparing an organosilicon composition from an olefin and a silicon hydride with a hydrosilation catalyst PtL2X2, in an amount less than 1 ppm based on the weight of the product composition, is disclosed. The method is particularly useful in lowering the cost, coloration, and stability of the product, particularly when an oxirane-containing olefin is used in the hydrosilation. In this method no inhibitor is needed to prevent the undesired polymerization of oxiranes in the reaction, and no purification of the product is required after removal of volatile components, including solvent.Type: GrantFiled: October 7, 2002Date of Patent: March 16, 2004Assignee: General Electric CompanyInventor: Darryl Stephen Williams
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Patent number: 6703120Abstract: The present invention provides silicone-based adhesives, preferably pressure sensitive adhesives, adhesive articles, and methods. Preferably, the articles are cover tapes for analytical receptacles, such as microtiter plates, microfluidic devices, and continuous multi-reservoir carriers, or other analytical receptacles or biosensors, for example. Typically, such analytical receptacles are used in bioanalytical applications and are designed for containing solids and fluids, including liquids, gases, powders, and gels, which may include biological samples or organic solvents, for example.Type: GrantFiled: April 11, 2002Date of Patent: March 9, 2004Assignee: 3M Innovative Properties CompanyInventors: John H. Ko, Kurt C. Melancon, Anita L. Schulz
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Publication number: 20040044164Abstract: This invention relates to the kit of parts containing (co)polymers having hydrogen-siloxane groups, a catalyst, a vinyl compound and a hydrosilyl compound. The kits of parts may be used as permanent or temporary, soft or hard elastic, bonding or filling materials on a dental substrate or a bone substrate.Type: ApplicationFiled: June 9, 2003Publication date: March 4, 2004Inventor: Juergen Engelbrecht
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Patent number: 6699956Abstract: A highly dielectric addition type curable composition is provided comprising (A) an organopolysiloxane containing a cyanoalkyl group and a monovalent hydrocarbon group having an aliphatic unsaturated bond, (B) an organohydrogenpolysiloxane containing a cyanoalkyl group, and (C) a platinum group metal catalyst. The composition is easy to handle because of liquid despite solvent-free, less hygroscopic and effectively curable, and has a film-forming ability. The cured composition has excellent dielectric properties as demonstrated by a large dielectric constant and a low dielectric loss.Type: GrantFiled: March 14, 2002Date of Patent: March 2, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Muneo Kudo, Masaaki Yamaya
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Patent number: 6689859Abstract: A hydrosilylation reaction curable composition that includes a silsesquioxane polymer, a mixture of silanes or siloxanes as a cross-linking compound and a hydrosilylation reaction catalyst. The curable composition is cured to form a cured resin having high fracture toughness and strength without the loss of elastic modulus.Type: GrantFiled: March 5, 2002Date of Patent: February 10, 2004Assignee: Dow Corning CorporationInventors: Zhongtao Li, Frederick J. McGarry, John R. Keryk, Bizhong Zhu, Dimitris E. Katsoulis
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Patent number: 6677393Abstract: The invention relates to silicone-based addition-crosslinking impression material, containing (a) organopolysiloxanes with at least two unsaturated groups in the molecule, (b) organohydrogen polysiloxanes with at least three Si—H groups in the molecule, (c) optionally, organopolysiloxanes without reactive groups, (d) platinum catalyst, (e) optionally, hydrophilizing agent, (f) filler, (g) optionally, further customary additives, auxiliaries and dyes, characterized in that it contains, as component (h), polyalkylene oxide and/or its derivatives with an average molar mass of Mw>1000 at the rate of 0.001 to 1.0 wt.-% relative to the total mass of the cured material.Type: GrantFiled: October 1, 2001Date of Patent: January 13, 2004Assignee: 3M ESPE AGInventors: Joachim Zech, Erich Wanek
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Patent number: 6677407Abstract: The present invention relates to a method of making silicone release coating compositions comprising mixing a vinyl functional organopolysiloxane, an organohydrogensilicon compound, a platinum group metal-containing catalyst, and certain silylated acetylenic inhibitors.Type: GrantFiled: August 28, 1996Date of Patent: January 13, 2004Assignee: Dow Corning CorporationInventors: Carl Joseph Bilgrien, Shawn Keith Mealey, Michael Ward Skinner
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Patent number: 6673876Abstract: A fluorinated curable composition in which a fluorinated organohydrogensiloxane as the curing agent is well compatible with a linear polyfluoro compound as the base yields a cured gel having good adhesion to substrates and improved chemical and solvent resistance.Type: GrantFiled: February 20, 2002Date of Patent: January 6, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kenichi Fukuda, Mikio Shiono
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Patent number: 6673887Abstract: A cured fluorine-containing material comprising a perfluoropolyether of the formula: —(Rf—O)q— wherein Rf is a perfluoroalkylene group of 1-6 carbon atoms and q is 1-500 as the backbone is suitable as an antireflection film since it has a low refractive index of up to 1.335 at 25° C.Type: GrantFiled: June 21, 2001Date of Patent: January 6, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Koichi Yamaguchi, Hirofumi Kishita
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Patent number: 6669949Abstract: This invention relates to asymmetrical, substituted polysiloxanes which show good compatibility in a variety of oils and improve the spreading behavior of oil-based formulations, to a process for preparing these asymmetrical polysiloxanes and to oil formulations containing said asymmetrical polysiloxanes. The asymmetrical polysiloxanes of this invention are used in herbicidal and pesticidal compositions, in cosmetic and pharmaceutical preparations as well as in industrial applications. The assymmetrical substituted polysiloxanes have the following formula wherein R1, R2, Z a and b are described herein.Type: GrantFiled: June 14, 2001Date of Patent: December 30, 2003Assignee: Goldschmidt AGInventors: Wayne Kennedy, Arno Knebelkamp, Peter Lersch, Jörg Simpelkamp, Stephen Wilkowski
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Patent number: 6663967Abstract: Organopolysiloxane compositions that cure by the addition reaction of silicon-bonded lower alkenyl radicals with silicon-bonded hydrogen atoms and which exhibit select adhesion to a variety of substrates. The compositions comprise an adhesion promoting mixture comprising an epoxy-functional compound, soluble polydiorganosiloxanes and polycycloorganosiloxanes (linear and cyclic) thus giving release characteristics to metal substrates while maintaining adhesion to the thermoplastic substrate. Additionally, an additive may be used to produce surface lubricity after curing.Type: GrantFiled: November 17, 2000Date of Patent: December 16, 2003Assignee: Bryant Rubber CorporationInventor: Rick A. Ziebell
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Patent number: 6660230Abstract: This invention relates generally to a new class of chemoselective polymer materials. In particular, the invention relates to linear polycarbosilane compounds for use in various analytical applications involving sorbent polymer materials, including chromatoghraphy, chemical trapping, analyte collection, and chemical sensor applications.Type: GrantFiled: July 2, 2001Date of Patent: December 9, 2003Assignee: The United States of America as represented by the Secretary of the NavyInventors: Robert Andrew McGill, Eric J. Houser
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Publication number: 20030212233Abstract: A composition curable by a metathesis reaction and comprising an olefin-containing resin system and metathesis catalyst. The resin system comprises siloxane-based oligomers or polymers end-capped and/or tethered with olefin functional groups that are capable of undergoing a metathesis reaction. The composition also includes a ruthenium carbene complex catalyst, whereby the catalyst initiates the metathesis reaction of the composition. The oligomer or polymer may be, for example, one or a combination of a telechelic polydimethylsiloxane end-capped with norbornenylethyl groups, a polydimethylsiloxane tethered and end-capped with norbornenylethyl groups, a tri-functional polydimethylsiloxane end-capped with norbornenylethyl groups, or a quadri-functional polydimethylsiloxane end-capped with norbornenylethyl groups. The catalyst may be, for example, a ruthenium carbene complex, such as 1,3-bis-(2,4,6-trimethylphenyl)-2-(imidazolidinylidene) dichloro(o-isopropoxyphenylmethylene) ruthenium.Type: ApplicationFiled: May 6, 2003Publication date: November 13, 2003Applicant: Kerr CorporationInventors: Christos Angeletakis, Mingfei Chen
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Patent number: 6645637Abstract: Extinguishing medium in pasty to solid form for quenching electric arcs, consisting of a silicone polymer or a mixture of such silicone polymers, with the silicone polymer or the mixture of silicone polymers containing a mineral compound or a mixture of such compounds in powder form as a filler; use of the extinguishing medium to quench electric arcs in overcurrent-protection elements, in electronics and microelectronics; in high-voltage engineering; or in repeating fuses, and electrical devices, machines and systems which contain an extinguishing medium according to the invention.Type: GrantFiled: May 31, 2001Date of Patent: November 11, 2003Assignee: ABB Research LtdInventors: Uwe Kaltenborn, Jens Rocks, Pal Kristian Skryten
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Hydrosilyation cured silicone resin containing colloidal silica and a process for producing the same
Patent number: 6646039Abstract: A hydrosilylation reaction curable composition including a silsesquioxane polymer, a cross-linking compound, a hydrosilylation reaction catalyst and colloidal silica having a surface coating formed thereon. The curable composition is cured to form a cured resin having high fracture toughness and strength without the loss of elastic modulus and glass transition temperature.Type: GrantFiled: March 5, 2002Date of Patent: November 11, 2003Assignee: Dow Corning CorporationInventors: Zhongtao Li, Frederick J. McGarry, Dimitris E. Katsoulis, John R. Keryk, Debora F. Bergstrom, Kermit S. Kwan, Bizhong Zhu -
Patent number: 6638519Abstract: The first embodiment of the present invention provides a composition, which includes: at least one aqueous phase that includes an aqueous suspension of particles of an at least partially crosslinked organopolysiloxane elastomer; and at least one sugar or sugar derivative. Other embodiments of the invention provide for the use of the above-described composition. Another embodiment of the invention provides a method selected from the group including treating, protecting, caring for, removing make-up from, and cleaning at least one selected from the group including the skin, lips and hair, and combinations thereof, which method includes applying the above-described composition to the skin, lips or hair.Type: GrantFiled: November 8, 2000Date of Patent: October 28, 2003Assignee: L'OrealInventor: Raluca Lorant
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Publication number: 20030191234Abstract: A crosslinkable fluororubber composition comprising (A) a liquid perfluoro compound having alkenyl groups and a divalent perfluorolakylene or perfluoropolyether structure, (B) a reinforcing filler, (C) a surface treating agent having a fluoroalkyl or fluoropolyalkyl ether group and a silanol group, (D) an addition reactive compound having hydrosilyl groups, and (E) a hydrosilyl or peroxide crosslinker is prepared by mixing components (A) to (C) to form a liquid or paste composition, adding component (D) thereto to form a millable composition, and mixing component (E) therewith. The composition is effectively roll workable and cures into products having excellent physical properties.Type: ApplicationFiled: March 21, 2003Publication date: October 9, 2003Inventors: Yasuhisa Osawa, Shinichi Sato, Masatoshi Arai
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Publication number: 20030181624Abstract: A silicone composition of a composition described below which is suitable for sealing semiconductors is provided.Type: ApplicationFiled: January 28, 2003Publication date: September 25, 2003Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Tsutomu Kashiwagi, Masachika Yoshino
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Patent number: 6624231Abstract: A curable composition comprising (A) a fluorinated amide compound having alkenyl radicals, (B) a fluorinated organohydrogensiloxane having SiH radicals, (C) a platinum group compound, (D) a silica powder, (E) an organosilane or organosiloxane having a monovalent perfluorooxyalkyl or perfluoroalkyl, divalent perfluorooxyalkylene or perfluoroalkylene radical and a hydroxy and/or alkoxy radical, and (F) an organosilane or organosiloxane having an alkenyl radical, a monovalent perfluorooxyalkyl or perfluoroalkyl, divalent perfluorooxyalkylene or perfluoroalkylene radical, and a hydroxy and/or alkoxy radical cures into a fluorinated elastomer that has good solvent resistance, chemical resistance, heat resistance, low-temperature properties, mold release, water and oil repellency and weather resistance as well as significantly improved mechanical strength and compression set.Type: GrantFiled: January 16, 2002Date of Patent: September 23, 2003Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Mikio Shiono
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Patent number: 6613434Abstract: The invention concerns a method for treating a surface for the protection and functionalisation of polymers (4) by gas plasma deposit in a confined chamber (10) of one or several silicon alloy layers (43). The silicon alloy is selected among silicon and its oxides, nitrides, oxynitrides; the deposit is performed at a temperature less than the degradation temperature of the polymer, and a physico—chemical surface pre-treatment by plasma is performed in the same chamber before the silicon alloy is deposited; the pre-treatment consisting in a surface treatment comprising etching a surface zone of the polymer and step which consists in depositing a polymeric carbon compound.Type: GrantFiled: January 31, 2002Date of Patent: September 2, 2003Assignee: Centre National de la Recherche ScientifiqueInventors: Bernard Drevillon, Pavel Bulkine, Alfred Franz Hofrichter
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Patent number: 6612836Abstract: The present invention relates to a molding that has a layer of copolymers that are crosslinkable by means of addition or condensation reactions and, optionally, thereon, a layer of silicone that is crosslinkable by means of addition or condensation reactions.Type: GrantFiled: December 7, 1999Date of Patent: September 2, 2003Assignee: S & C Polymer, Silicon- und Composite-Spezialitation GmbHInventor: Jürgen Engelbrecht
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Patent number: 6613440Abstract: An addition reaction curing type silicone rubber composition comprising (A) an alkenyl-containing diorganopolysiloxane, (B) an alkaline earth metal carbonate powder surface treated with a diorganopolysiloxane, (C) an organohydrogenpolysiloxane, and (D) a platinum group metal catalyst has improved storage stability in that it gives off little or no hydrogen gas during storage. The composition has improved adhesion and a good ability to protect electric or electronic parts from corrosion and finds typical use in the sealing of electric or electronic parts.Type: GrantFiled: July 17, 2001Date of Patent: September 2, 2003Assignee: Shin-Etsy Cgenucak Ci, M KtdInventors: Hiroyasu Hara, Hideki Sugahara, Yoshifumi Inoue, Takashi Aketa
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Patent number: 6605360Abstract: A polyorganosiloxane compound obtained by allowing a polyorganosiloxane having silicone resin structure to react with a polyorganosiloxane having silicone oil structure in the presence of a hydrosilylation catalyst, and having the both structures in the molecule. Also disclosed is a coating composition including the polyorganosiloxane compound, a silane or silicone resin having an RO—Si group, and a curing catalyst. The former polyorganosiloxane compound is compatible with silicone resins. The latter coating composition can provide coatings improved in flexibility without lowering the curability, surface hardness and weatherability inherent in silicone resins.Type: GrantFiled: September 14, 2001Date of Patent: August 12, 2003Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroaki Kizaki, Masaaki Yamaya, Akinari Itagaki
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Patent number: 6602964Abstract: Disclosed herein is a composition comprising: A) a moisture curable polymer selected from the group consisting of silylated polyurethanes, silylated polyethers, and mixtures thereof, and B) a silicone oligomer of the formula: [R3SiO1/2]m[O1/2Si(R)2O1/2]n[SiO3/2R]o[SiO4/2]p (I) wherein: each R is independently selected from the group consisting of B, R1, —OR2, R3, and R4; B is an organosilyl functional group bridged to the Si atom of the siloxane oligomer backbone by a Si—C bond; each R1 is independently a saturated or aromatic hydrocarbon group of 1 to 16 carbon atoms; each R2 is independently a group as defined for R1 or an acyl group; each R3 is independently a monovalent organic group containing an aliphatic unsaturated hydrocarbon group; each R4 is a monovalent organic group linked to the Si atom of the siloxane oligomer backbone by a Si—C bond that does not include an aliphatic unsaturated hydrocarbon group and that has thereType: GrantFiled: February 4, 2002Date of Patent: August 5, 2003Assignee: Crompton CorporationInventors: Misty Huang, Richard E. Handel, Herbert Petty
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Patent number: 6602102Abstract: A buoyant silicone rubber compound—and process for preparing same—is disclosed wherein hollow micro spheres are incorporated into the formulation in order to decrease the specific gravity of the compound to less than 1.0. The disclosed compound is prepared by admixing from about 85 to 99 weight percent polydimethyl siloxane with from about 1 to 15 weight percent hollow micro spheres. The micro spheres are selected to have a mean particle diameter of from about 10 to 500 microns. Aquatic gear comprised of the afore-mentioned buoyant silicone rubber exhibiting positive buoyancy/flotation such as ear plugs, swim goggles, dive masks, fins and sun glasses are also disclosed.Type: GrantFiled: October 10, 2001Date of Patent: August 5, 2003Assignee: South Valley SpecialtiesInventors: Brent Gines, Rique Ford