Wherein One Of Said Silicon Materials Contains Si-h Bond Patents (Class 525/478)
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Patent number: 6875516Abstract: An ?SiH/?SiOH silicone composition polymerizable/crosslinkable by dehydrogenating condensation in the presence of a catalyst judiciously selected to achieve at least one of the following: kinetics, concentration/efficiency ratio of the catalyst, cost, lowering of the catalyst activation temperature (room temperature), control of the release of gaseous hydrogen and the quality of the polymerized product and the crosslinked network, and finally limitation of the secondary reactions. This composition includes: —A— at least one ?SiH POS; —B— at least one ?SiOH POS; —C— at least one metal catalyst selected from the group of organometallic complexes including at least one of the following metals: Ir, Ru, Mn; —D— optionally at least one crosslinking inhibitor; —E— optionally at least one POS resin; and —F— optionally at least one filler. Also disclosed is the catalyst —C— and processes which involve crosslinking of silicone by dehydrogenating condensation (non-stick coating on paper).Type: GrantFiled: April 18, 2002Date of Patent: April 5, 2005Assignee: Rhodia ChimieInventors: Jean-Paul Benayoun, Delphine Blanc-Magnard, Gérard Mignani, Christian Mirou
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Patent number: 6867374Abstract: A coating composition containing a zirconium compound and a silicon compound is applied on a conductor 1 and baked to develop a ceramic insulating coating 2. A bonding agent made by dissolving a polyamide resin or a polyimide resin into an organic agent is then applied on the ceramic insulating coating 2 and baked to develop a fusible coating 3. This produces a self-fusible ceramic insulation coated wire which can retain the favorable properties of coil at high temperatures. Also, it can be used as windings such as high-power loudspeaker voice coils.Type: GrantFiled: January 22, 2002Date of Patent: March 15, 2005Assignees: Totoku Electric Co., Ltd., Tohoku Pioneer Corp., Kabushiki Kaisya Nippan KenkyujoInventors: Toshihiro Ishigaki, Yoshitaka Kobayashi, Tomoyuki Shimada, Masatake Uehara
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Patent number: 6846896Abstract: A curable composition comprising (A) a polyfluorodialkenyl compound having at least two alkenyl radicals, (B) a fluorinated organohydrogensiloxane having at least two Si—H radicals, (C) a platinum group compound, (D) a hydrophobic silica powder, and (E) an organosiloxane having a Si—H radical and a trialkyl or trialkoxy-containing organic radical attached to a silicon atom cures into a product having improved solvent resistance, chemical resistance, heat resistance, low-temperature properties, low moisture permeability and electric properties and exhibiting good adhesion to a variety of substrates including metals and plastics by brief heating at relatively low temperatures.Type: GrantFiled: October 23, 2003Date of Patent: January 25, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiromasa Yamaguchi, Mikio Shiono
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Patent number: 6841647Abstract: A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer.Type: GrantFiled: November 6, 2001Date of Patent: January 11, 2005Assignee: National Starch and Chemical Investment Holding CorporationInventors: Elizabeth M. Walker, Jiazhong Luo, Rose Ann Schultz, Katharine Louise Pearce
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Patent number: 6838182Abstract: Heat-curable silicone compositions employing a reactive silicone, a silicone hydride crosslinker and a catalyst system which includes a rhodium-based catalyst, a stabilizing system are disclosed. A combination of rhodium and platinum-based catalysts are employed as well. The compositions are low temperature curing and are capable of providing low coefficient of thermal expansion compositions. A stabilizer system which includes in combination a peroxide and an acetylenic compound is also disclosed.Type: GrantFiled: January 14, 2003Date of Patent: January 4, 2005Assignee: Henkel CorporationInventors: Philip L. Kropp, Lester D. Bennington, Robert P. Cross, Bahram Issari
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Patent number: 6828360Abstract: In fluorinated curable compositions comprising alkenyl group-bearing perfluoropolyethers as the base polymer to ensure chemical resistance and solvent resistance together with an organohydrogensiloxane and a platinum group metal catalyst, a hydrophobized silica fine powder is used in combination therewith to render the compositions thixotropic.Type: GrantFiled: December 19, 2002Date of Patent: December 7, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kenichi Fukuda, Mikio Shiono
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Patent number: 6828031Abstract: An optical device is described comprising at least one fiber-optic component arrange inside said device and a particular polymer composition capable of holding said optical component(s) in a predetermined position and protecting them inside said device. The polymer composition is a silicone elastomer obtained by crosslinking a mixture comprising at least one polysiloxane containing two or more hydrogen-siloxane functional groups of formula >SiH—O—, and at least one polysiloxane containing at least two vinyl groups of formula —CH═H2, where said polysiloxane are reacted in an amount such that the molar ratio between the hydrogen-siloxane groups and the vinyl groups is less than or equal to 1:1. The polymer composition has extremely low emission of hydrogen, less than 1 cm3 per kg of composition.Type: GrantFiled: September 16, 2002Date of Patent: December 7, 2004Assignee: Corning IncorporatedInventors: Claudio Bosisio, Giovanni DelRosso, Marco De Donno, Danilo Scarano
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Publication number: 20040214966Abstract: A curable silicone resin composition is provided which is useful as a material for optical devices or parts, insulation material for electronic devices or parts, or coating material, and which produces a cured product having high hardness and strength and further having good optical transmission in the short wavelength region. The composition includes (A) an aromatic hydrocarbon compound having at least two hydrogen atoms bonded to silicon atoms with the silicon atoms being bonded to the hydrocarbon skeleton of the aromatic hydrocarbon compound, (B) a cyclic siloxane compound having at least two silicon atom-bonded alkenyl groups, and (C) a hydrosilylation reaction catalyst, or (D) an aromatic hydrocarbon compound having at least two alkenyl groups bonded to silicon atoms with the silicon atoms being bonded to the hydrocarbon skeleton of the aromatic hydrocarbon compound, (E) a cyclic siloxane compound having at least two silicon atom-bonded hydrogen atoms, and (C) a hydrosilylation reaction catalyst.Type: ApplicationFiled: April 22, 2004Publication date: October 28, 2004Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Eiichi Tabei, Mitsuhiro Takarada
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Patent number: 6805712Abstract: A process for producing polysiloxane prepolymers of improved homogeneity for use in the production of relatively high refractive index polymeric compositions is described herein. Polymeric compositions so produced are useful in the production of ophthalmic devices such as for example intraocular lenses and corneal inlays. The preferred polymeric compositions are produced through the copolymerization of one or more polysiloxane prepolymers with hydrosilane-containing polysiloxanes.Type: GrantFiled: March 20, 2002Date of Patent: October 19, 2004Assignee: Bausch & Lomb IncorporatedInventors: Yu-Chin Lai, Edmond T. Quinn
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Patent number: 6805914Abstract: This invention relates to silicone coating composition comprising a solventless silicone coating composition and a liquid silicone mist suppressant composition obtained by a method comprising reacting a large excess of at least one organohydrogensilicon compound containing at least three silicon-bonded hydrogen groups with at least one compound containing at least two alkenyl groups in the presence of a platinum group metal-containing catalyst.Type: GrantFiled: November 26, 2002Date of Patent: October 19, 2004Assignee: Dow Corning CorporationInventors: Joseph Norbert Clark, Robert Alan Ekeland, Michael Sean Owens, Paul Cornelius Van Dort
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Patent number: 6797772Abstract: A composition comprises the product obtained by homogeneously blending: (A) 100 parts by weight of a polyorganosiloxane containing at least two alkenyl radicals per molecule, (B) an organohydrogensiloxane containing at least two silicon-bonded hydrogen atoms per molecule in a quantity sufficient to provide from 0.5 to 3 silicon-bonded hydrogen atoms per alkenyl radical of (A), (C) from 50-2000 parts by weight of silver particles pre-treated with an organosilicon compound selected from the group consisting of (i) alkoxy group(s)-containing silanes and (ii) organosiloxanes, (D) a platinum catalyst, (E) up to 20 weight percent based on the weight of (A) of an organosilicon compound containing at least one silicon-bonded alkoxy group per molecule, and (F) from 0.001 to 5 parts by weight per 100 parts by weight of (A) of a cure inhibitor.Type: GrantFiled: January 18, 2002Date of Patent: September 28, 2004Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Kazumi Nakayoshi, Katsutoshi Mine, Rikako Tazawa
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Patent number: 6797742Abstract: The cross-linked hydrosilylation reaction product of an alkenyl functional silicone compound, a silylhydride functional silicone compound, and one or more allyl started, hydrogen, alkyl, aryl or acyl terminated polyether compounds exhibits stability, compatibility with polar organic solvents and is useful as a component in personal care compositions.Type: GrantFiled: October 5, 2001Date of Patent: September 28, 2004Assignee: General Electric CompanyInventors: John A. Kilgour, Atchara Chaiyawat, An-Li Kuo, Donald E. Firstenberg
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Patent number: 6787615Abstract: The invention comprises a networked polymer comprising the formula: wherein n≧1; wherein n is an average value obtained by averaging all repeating units of the networked polymer; wherein m≧1; wherein Y is a divalent group containing one or more acetylenic groups, one or more crosslinks, or both; wherein z is the average number of crosslinks per Y group; wherein Ar1 and Ar2 are independently selected aromatic groups; and wherein each R is independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl, and combinations thereof. The invention also includes prepolymers and precursors needed to make the networked polymer and processes for making all of the above. The invention also includes a ceramic composition made by pyrolysis of the networked polymer.Type: GrantFiled: January 25, 2002Date of Patent: September 7, 2004Assignee: The United States of America as Represented by the Secretary of the NavyInventors: Teddy M. Keller, Craig L. Homrighausen
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Patent number: 6787241Abstract: A film obtained by heating a coating of a resin composition at a temperature lower than 300° C. but not lower than 40° C. in air or in an inert atmosphere. The resin composition includes a hydrosilylated polymer obtained by reacting at least one hydridosilsesquioxane compound of the following formula (1): (HSiO3/2)n (1) wherein n is an integer of 4-1000, with at least one compound of the following formula (2) R1—C≡C—R2 (2) wherein R1 represents a hydrogen atom, a monovalent organic group or a monovalent organosilicon group and R2 represents a hydrogen atom or a group of the formula: —(R′)q—C≡C—R where R′ represents a divalent organic group or a divalent organometallic group, R represents a monovalent organic group or a monovalent organosilicon group and q is 0 or 1 with the proviso that when R1 is a hydrogen atom R2 is a hydrogen atom.Type: GrantFiled: March 14, 2002Date of Patent: September 7, 2004Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Toshiaki Kobayashi, Teruyuki Hayashi, Masato Tanaka, Kouichi Yamaguchi
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Patent number: 6787610Abstract: An elastomer sealing material having low dielectric constant and low dielectric dissipation, which is satisfactory with both of resistance to oxygen plasma and non-adhesion to quartz and can be applied to apparatus utilizing microwaves, is disclosed. The plasma-resistant fluorine-based elastomer sealing material comprises a fluorine-based elastomer having a divalent perfluoropolyether or divalent perfluoroalkylene structure in the main chain thereof and having two or more hydrosilyl groups and addition-reactive alkenyl groups in the terminals or side chains thereof, and a polymer having two or more hydrosilyl groups in the molecule and being capable of addition reacting with the alkenyl groups, the fluorine-based elastomer being crosslinked with the polymer.Type: GrantFiled: October 10, 2002Date of Patent: September 7, 2004Assignee: Nichias CorporationInventors: Kazuki Morimoto, Mitsuyuki Nakano, Kazuo Nishimoto
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Patent number: 6780518Abstract: A silicone rubber adhesive composition comprising (A) a heat curable organopolysiloxane composition of the addition curing type or peroxide curing type, (B) reinforcing silica fines, and (C) an organic compound or organosilicon compound having an epoxy equivalent of 100-5,000 g/mol and containing at least one aromatic ring in a molecule is easily moldable within a short time by injection molding, suitable in primerless molding, and bondable with various thermoplastic resins. Integrally molded articles in which the silicone rubber adhesive composition is firmly bonded to the thermoplastic resin are obtainable without a need for modification of the resin.Type: GrantFiled: January 4, 2002Date of Patent: August 24, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Syuuichi Azechi, Naoki Yamakawa
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Patent number: 6780919Abstract: An organopolysiloxane composition for molding purposes is provided which includes: (A) an organopolysiloxane with at least two alkenyl groups bonded to silicon atoms, (B) a straight chain organopolysiloxane with a hydrogen atom bonded to a silicon atom at both terminals, (C) an organohydrogenpolysiloxane with at least three hydrogen atoms bonded to silicon atoms within a single molecule and including a RHSiO unit and a R2XSiO1/2 unit (wherein R is an unsubstituted or a substituted monovalent hydrocarbon group with no alkenyl groups, and X represents either a hydrogen atom or a group represented by R as defined above) within the molecule, (D) a hydrosilylation reaction catalyst, and (E) finely powdered silica, wherein the total number of hydrogen atoms bonded to silicon atoms within the constituent (B) and the constituent (C) ranges from 1 to 5 per alkenyl group within the constituent (A), and the number of hydrogen atoms bonded to silicon atoms within the constituent (B) accounts for 20 to 70 mol % of the comType: GrantFiled: December 18, 2001Date of Patent: August 24, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masayuki Ikeno, Masaya Arakawa, Kouichi Tanaka
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Patent number: 6774200Abstract: A molding obtained by heating a hydrosilylated polymer at a temperature higher than the softening point or melting point thereof. The hydrosilylated polymer is obtained by reacting at least one hydridosilsesquioxane compound of the following formula (1): (HSiO3/2)n (1) wherein n is an integer of 4-1000, with at least one divinylsiloxane compound of the following formula (2): CH2═CH—SiR2—O—(SiR2.O)q—(SiR′2.O)q′—SiR2—CH═CH2 (2) wherein R and R′ are independently selected from alkyl groups, substituted alkyl groups, aryl groups and substituted aryl groups, and q and q′ are each an integer of 0 or more.Type: GrantFiled: February 28, 2002Date of Patent: August 10, 2004Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Toshiaki Kobayashi, Teruyuki Hayashi, Masato Tanaka
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Patent number: 6774201Abstract: Star branched siloxane compounds suitable as anti-mist additives in the coating of flexible supports are made as the reaction product of: Mg′MaMHb−gDcDh′DHd−hTeTi′THf−i and (MjMVikDlDVimTnTVioQp)q, in the presence of a noble metal hydrosilylation catalyst where the ratio between the hydride containing precursor and the vinyl containing precursor is defined by a mathematical relationship between the stoichiometric subscripts of the precursors, (b+d+f−g−h−i)/(((k+m+o)p)q) ranging from 4.59 to 0.25 and where the compound: Mg′MaMHb−gDcDh′DHd−hTeTi′THf−i may be obtained by the following reaction: MaMHbDcDHdTeTHf+&agr;CH2═CHR1→Mg′MaMHb−gDcDh′DHd−hTeTi′THf−I, which compound itself is a star branched siloxane compound useful as an anti-mist additive.Type: GrantFiled: November 15, 2002Date of Patent: August 10, 2004Assignee: General Electric CompanyInventors: John Alfred Kilgour, Edwin C. Cua, John A. Cummings
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Patent number: 6762242Abstract: Silicone material crosslinkable into silicone elastomer by polyaddition reactions is described. A material is provided offering a compromise between the following characteristics: fluidity (in non-crosslinked state), hydrophilicity (in non-crosslinked or crossliked state) and high mechanical properties (in crosslinked state). The following materials are added to crosslinkable silicone material: (i) a reinforcing siliceous filler in the form of a suspension obtained by subjecting the filler to a treatment in two stages by an agent providing compatibility and by operating in the presence of a polyorganosiloxane with Si-alkenyl functions; and (ii) one or more non-ionic, ionic or amphoteric surfactants. Said silicone material is particularly useful for impressions, for example dental impressions and for making pads used in pad printing techniques.Type: GrantFiled: February 5, 2002Date of Patent: July 13, 2004Assignee: Rhodia ServicesInventors: Marco Del Torto, Fabienne Howe, Alain Pouchelon, Christian Pusineri
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Patent number: 6759487Abstract: Re-processable thermoplastic elastomer composition comprising (A) a thermoplastic polyurethane polymer, and (B) a silicone elastomer, wherein the weight ratio of the silicone elastomer to the thermoplastic polyurethane polymer is from 5:95 to 85:15, are disclosed along with methods for making such compositions.Type: GrantFiled: October 23, 2002Date of Patent: July 6, 2004Assignee: Dow Corning CorporationInventors: Gerald Alphonse Gornowicz, Craig Steven Gross, Mark Daniel Hartmann, Jun Liao, Jeffrey Paul Sage, Gifford Neale Shearer, Thomas John Tangney
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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: 6756077Abstract: A composition that is preferably an aqueous emulsion is disclosed that comprises: 1) a compound of a defined formula comprising a silicon moiety and an epoxy functionality; 2) a compound of a defined formula comprising a silicon moiety and an alkoxy functionality; 3) a crosslinker of a defined formula comprising a silicon moiety; and 4) a catalyst. Upon treating fibers or fabrics with the composition, a condensation reaction product is formed upon reaction with the catalyst at curing temperatures that imparts superior durability, water repellency, and softness to the fibers or fabrics.Type: GrantFiled: February 20, 2002Date of Patent: June 29, 2004Assignee: General Electric CompanyInventor: Hua Yu
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Patent number: 6743856Abstract: Novel processes for preparing hydridosiloxane and organohydridosiloxane resins are disclosed. The processes of the invention broadly provide for the steps of contacting a silane monomer with a phase transfer catalyst in the presence of a reaction mixture that includes a nonpolar, e.g., hydrocarbon, solvent, and a polar solvent, e.g., alcohol and water. The process is conducted under conditions effective to catalytically convert said silane monomer into hydridosiloxane and organohydridosiloxane resins. Recovery of the products is advantageously aided by the ease of separating the phase transfer catalyst from the dual phase reaction mixture by separating the immiscible polar solvent carrying the catalyst from the nonpolar solvent, that carries the product. Hydridosiloxane and organohydridosiloxane resins produced by the processes of the invention are also provided.Type: GrantFiled: February 16, 2000Date of Patent: June 1, 2004Assignee: Honeywell International Inc.Inventors: Nigel P. Hacker, Lisa K. Figge, Scott Lefferts
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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: 6730453Abstract: The invention provides a high molecular weight silicone compound comprising recurring units of formula (1) and having a weight average molecular weight of 1,000-50,000. Some or all of the hydrogen atoms of carboxyl groups or carboxyl and hydroxyl groups in the silicone compound may be replaced by acid labile groups. Z is a di- to hexavalent, non-aromatic, monocyclic or polycyclic hydrocarbon or bridged cyclic hydrocarbon group; Z is a di- to hexavalent, normal or branched hydrocarbon group or non-aromatic, monocyclic or polycyclic hydrocarbon or bridged cyclic hydrocarbon group; x, y and z are integers of 1-5 corresponding to the valence of Z and Z′; R1 is —OCHR—R′—OH or —NHCHR—R′—OH; R2 is alkyl or alkenyl or a monovalent, non-aromatic, polycyclic hydrocarbon or bridged cyclic hydrocarbon group; p1, p2, p3 and p4 are 0 or positive numbers.Type: GrantFiled: June 25, 2001Date of Patent: May 4, 2004Assignee: Shin Etsu Chemical Co., Ltd.Inventors: Mutsuo Nakashima, Ichiro Kaneko, Toshinobu Ishihara, Junji Tsuchiya, Jun Hatakeyama, Shigehiro Nagura
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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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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: 6709756Abstract: An adhesive in the form of a liquid epoxy resin composition comprising (A) a liquid epoxy resin, (B) 20 to 90% by weight based on the entire composition of an inorganic filler having an average particle size from more than 1 &mgr;m to 20 &mgr;m and containing up to 1% by weight of a fraction of particles having a particle size of at least 45 &mgr;m and optionally, (C) a silicone-modified resin is suitable for bonding optical elements in optical devices.Type: GrantFiled: May 21, 2002Date of Patent: March 23, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Haruyoshi Kuwabara, Miyuki Wakao, Toshio Shiobara
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Patent number: 6709753Abstract: A resin composition is provided comprising a silicone-modified epoxy or phenolic resin obtained by reacting an epoxy or phenolic resin having specific structural units with an organopolysiloxane. The modified epoxy or phenolic resin is such that after the modified epoxy or phenolic resin is cured alone or together with another epoxy resin and/or phenolic resin to form a cured product, the organopolysiloxane component does not form a phase separation structure in the cured product. The composition cures into a product having both the adherence, heat resistance and humidity resistance characteristic of epoxy or phenolic resins and the flexibility and impact resistance characteristic of silicone resins.Type: GrantFiled: February 22, 2002Date of Patent: March 23, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tsuyoshi Honda, Toshio Shiobara, Tatsuya Kanamaru
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Patent number: 6706812Abstract: Polyorganosiloxane mixtures are obtainable by reacting linear polysiloxanes containing Si—H-bonds with linear dihydroxypolysiloxanes and amino-functional silanes. The reaction is carried out in such a way that the resultant product mixture still contains Si—H— bonds and leads to crosslinked structures. The polysiloxane mixtures obtained are useful for hydrophobicizing fiber materials, especially nonwovens.Type: GrantFiled: October 17, 2002Date of Patent: March 16, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Harald Chrobaczek, Ingo Görlitz, Erich Rössler, Mark Oelschläger
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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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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: 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: 6670418Abstract: Crosslinkable organopolysiloxane compositions, comprising; (1) an organopolysiloxane which contains SiC-bonded radicals with aliphatic carbon—carbon multiple bonds, and (2) an organopolysiloxane with Si-bonded hydrogen atoms or, instead of (1) and (2), or (3) an organopolysiloxane which contains SiC-bonded radicals with aliphatic carbon—carbon multiple bonds and Si-bonded hydrogen atoms, (4) a catalyst which promotes the addition of Si-bonded hydrogen onto an aliphatic multiple bond, (5) a reinforcing filler (6) a non-reinforcing filler having an average particle diameter of less than 30 &mgr;m and a BET surface area of less than 30 m2/g and, optionally, further substances.Type: GrantFiled: January 2, 2003Date of Patent: December 30, 2003Assignee: Wacker-Chemie GmbHInventors: Johann Mueller, Adolf Eller
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Patent number: 6667369Abstract: (Meth)acrylic polymers having alkenyl or curable silyl groups at the chain ends in high functionality ratios are prepared by a process which comprises (i) preparing a (meth)acrylic polymer having halogen atoms at the chain ends, using an organohalogenated compound or a halosulfonyl compound as an initiator and a metal complex catalyst wherein the central metal atom is selected from the group consisting of the elements of Groups 8, 9, 10 and 11 of the periodic table; and (ii) transforming the halogen atom into an alkenyl group- or a curable silyl group-containing substituent. The obtained (meth)acrylic polymers form homogeneous curing materials.Type: GrantFiled: May 13, 2002Date of Patent: December 23, 2003Assignee: Kaneka CorporationInventors: Masato Kusakabe, Kenichi Kitano
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Patent number: 6667104Abstract: A phenol resin composition for wet friction material comprising a curable resin composition obtained by mixing a resol-type phenol resin and a hydrolysis solution of an alkoxysilane or a condensate thereof, wherein the ratio by weight of the nonvolatile components of the resol-type phenol resin (R) and the nonvolatile components of the hydrolysis solution of the alkoxysilane or the condensate thereof (S), obtained after heat-treatment at 135° C. for one hour, is in the range of 64/36 to 10/90.Type: GrantFiled: June 4, 2002Date of Patent: December 23, 2003Assignees: Sumitomo Bakelite Company Limited, NSK-Warner K.K.Inventors: Hiroshi Aiba, Masahiro Mori
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Patent number: 6660394Abstract: Disclosed are a coating composition comprising a polymer dispersed in an aqueous medium, the polymer containing (a) a hydrolysate of an organosilane and/or a condensation product thereof and (b) a vinyl polymer containing a silyl group having a silicon atom bound to a hydrolytic group and/or a hydroxyl group, and further comprising (c) an oxazoline derivative as a crosslinking agent and a hardened film obtained therefrom. The above coating composition completes the hardening reaction of a coating film at low temperature for a short period of time, high in hardness immediately after hardening, and having water resistance, weather resistance, organic chemical resistance, acid resistance, alkali resistance, wear resistance and durable adhesion.Type: GrantFiled: November 14, 2000Date of Patent: December 9, 2003Assignee: JSR CorporationInventors: Kenji Ishizuki, Tatsuya Shimizu, Michiaki Ando, Mibuko Shimada, Hiroshi Shiho
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Patent number: 6641922Abstract: An isocyanate adduct comprising the reaction product of a composition comprising in admixture a polyisocyanate, a silicone having dimethylsiloxane segments containing one or more of an isocyanate-reactive group bonded to said segments through an intermediate organic group, a reactant containing one or more of an isocyanate-reactive group, and one or more acid group or amine group, optionally an organic substance having one or more isocyanate-reactive groups, and compound providing counterion for said acid or amine group, wherein either the silicone, or the reactant, or both, have a single isocyanate-reactive group.Type: GrantFiled: May 2, 2001Date of Patent: November 4, 2003Inventor: A. Andrew Shores
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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: 6602551Abstract: A silicone composition is provided which comprises a vulcanizable adhesive formulation which comprises at least one oxygen-substituted allyl aromatic compound, a vinyl-containing polydiorganosiloxane, a hydrogen-containing polysiloxane, and a catalytic amount of a hydrosilylation catalyst. Further embodiments of the present invention include the oxygen-substituted allyl aromatic compound which provides adhesion to a substrate when present in a silicone composition and a method to provide cohesive failure to a silicone composition and a polyamide substrate.Type: GrantFiled: July 2, 2001Date of Patent: August 5, 2003Assignee: General Electric CompanyInventors: Rachid Kerboua, Judith Stein
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Patent number: 6599974Abstract: An impression material for the use with an impression spoon in patients, wherein the impression material comprises curable components and at least one first filler, characterized in that said at least first filler has a BET surface of from 20 to 50 m2/g, preferably from 30 to 40 m2/g, whereby the impression material attains a low thixotropy and a viscosity of from 1 to 350 Pas.Type: GrantFiled: August 13, 2001Date of Patent: July 29, 2003Assignee: Kettenbach GmbH & Co. KGInventors: Alexander Bublewitz, Jens-Peter Reber, Rainer Hahn
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Publication number: 20030138646Abstract: A rubber composition contains an organopolysiloxane having at least two alkenyl radicals, an organohydrogenpolysiloxane having at least three Si—H radicals, a catalyst and optionally, fumed silica and an acid resistant inorganic filler. On a periphery of one side of a polymer electrolyte fuel-cell separator, the composition forms a seal member which allows for little leaching of non-functional organopolysiloxane fraction and has improved acid resistance and compression set.Type: ApplicationFiled: November 12, 2002Publication date: July 24, 2003Inventors: Noriyuki Meguriya, Yujiro Taira
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Patent number: 6596821Abstract: A process for producing a cured silsesquioxane resin. The process includes fractionating the silsesquioxane resin a plurality of times utilizing an organic solvent in combination with an organic non-solvent. The fractionated resin is then stripped of excess solvent. The stripped resin is then mixed with a cross-linking compound to form a curable composition. 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: July 22, 2003Assignee: Dow Corning CorporationInventors: Dimitris E. Katsoulis, Bizhong Zhu, John R. Keryk, Frederick J. McGarry, Zhongtao Li
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Patent number: 6592999Abstract: The present invention provides an improved multi-layer composite of two or more polymeric layers at least one of which is formed from a thermosetting composition. The composite includes at least a first polymeric layer formed on a substrate and a second polymeric layer over the first polymeric layer, wherein in the absence of a boron-containing compound, the first and second polymeric layers have poor interlayer adhesion. The improvement resides in the inclusion of at least one boron-containing compound in one or both of the first and second polymeric layers in an amount sufficient to improve the interlayer adhesion between the first and second polymeric layers. Also provided is an improved curable coating composition used to form a multi-layer composite coating of two or more cured coating layers, at least one of which is formed from the thermosetting composition. Related methods and coated substrates are also provided.Type: GrantFiled: July 31, 2001Date of Patent: July 15, 2003Assignee: PPG Industries Ohio, Inc.Inventors: Lawrence G. Anderson, John W. Burgman, Karen A. Morow, Richard J. Sadvary, Shiryn Tyebjee, Dennis A. Simpson, Thomas R. Hockswender
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Patent number: 6590010Abstract: By blending novel organosiloxane polymers of the invention with a crosslinking agent and a photoacid generator, photo-curable resin compositions are formulated which can be exposed to radiation in a broad wavelength range and readily form a thin film without oxygen attack. From the compositions, fine patterns having improved dry etching resistance can be formed. Cured coatings of the compositions having improved substrate adhesion, heat resistance, and electrical insulation are suitable as a protective film for electric and electronic parts.Type: GrantFiled: September 12, 2001Date of Patent: July 8, 2003Assignee: Shin-Etsu Chemicals, Co., Ltd.Inventors: Hideto Kato, Takafumi Ueda, Tomoyoshi Furihata
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Patent number: 6586535Abstract: This invention relates to silicone coating composition comprising a solventless silicone coating composition and a liquid silicone mist suppressant composition obtained by a method comprising reacting at least one organohydrogensilicon compound containing at least two silicon-bonded hydrogen groups with a large excess of at least one organoalkenylsiloxane containing at least three silicon-bonded alkenyl groups in the presence of a platinum group metal-containing catalyst.Type: GrantFiled: June 22, 2000Date of Patent: July 1, 2003Assignee: Dow Corning CorporationInventors: Joseph Norbert Clark, Paul Cornelius Van Dort
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Publication number: 20030120000Abstract: This invention relates to silicone coating composition comprising a solventless silicone coating composition and a liquid silicone mist suppressant composition obtained by a method comprising reacting a large excess of at least one organohydrogensilicon compound containing at least three silicon-bonded hydrogen groups with at least one compound containing at least two alkenyl groups in the presence of a platinum group metal-containing catalyst.Type: ApplicationFiled: November 26, 2002Publication date: June 26, 2003Inventors: Joseph Norbert Clark, Robert Alan Ekeland, Michael Sean Owens, Paul Cornelius Van Dort
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Patent number: 6576737Abstract: A curable composition comprising (A) a fluorinated amide compound having at least one alkenyl radical, (B) a fluorinated organohydrogensiloxane, (C) a platinum group compound, (D) a first organosiloxane having at least one SiH radical and at least one epoxy and/or trialkoxysilyl radical, and (E) a second organosiloxane having at least one SiH radical, at least one cyclic carboxylic anhydride residue, and at least one monovalent perfluorooxyalkyl or perfluoroalkyl radical cures into a fluorinated elastomer that not only has good solvent resistance, chemical resistance, heat resistance, low-temperature properties, low moisture permeability and electrical properties, but also firmly bonds to a variety of substrates including PPS, polyamide and polyimide resins.Type: GrantFiled: October 4, 2001Date of Patent: June 10, 2003Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Mikio Shiono, Takashi Matsuda, Masatoshi Arai