Material Contains A Group Viii Metal Atom Patents (Class 528/15)
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Publication number: 20100137545Abstract: The present invention relates to a novel process for the preparation of an organopolysiloxane functionalized with a benzalmalonate by hydrosilylation, said process involving the use of a hydroxy carboxylic acid or a cyclic ester thereof.Type: ApplicationFiled: December 1, 2009Publication date: June 3, 2010Applicant: DSM IP ASSETS B.V.Inventors: Friedhelm Nickel, Peter Will
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Patent number: 7727773Abstract: A method of manufacturing an analytical sample by a secondary ion mass spectrometry method is provided, which comprises a step of forming a separation layer over a substrate, a step of forming one of a thin film and a thin-film stack body to be analyzed over the separation layer, a step of forming an opening portion in one of the thin film and the thin-film stack body, a step of attaching a supporting body to one of a surface of the thin film and a surface of a top layer of the thin-film stack body, and a step of separating one of the thin film and the thin-film stack body from the substrate.Type: GrantFiled: October 24, 2007Date of Patent: June 1, 2010Assignee: Semiconductor Energy Laboratory Co., LtdInventor: Satoshi Toriumi
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Patent number: 7718748Abstract: A two-component addition-crosslinking silicone comprises (a) 0.1-70% by weight polyorganosiloxanes containing at least two unsaturated groups in the molecule; (b) 0.1-15% by weight polyorganohydrogensiloxanes containing at least two SiH groups in the molecule; (c) 0.01-2.0% by weight noble metal catalyst; and (d) 0.1-5% by weight of a non-toxic antimicrobial additive or a combination of at least two non-toxic antimicrobial additives.Type: GrantFiled: October 16, 2006Date of Patent: May 18, 2010Assignee: Dreve-Otoplastik GmbHInventors: Thomas Veit, Martin Klare, Michael Kutschinski, Reiner Altmann
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Publication number: 20100113730Abstract: A novel diorganopolysiloxane represented by the following general formula: X—R2—(R12SiO)nR12Si—R2—X, {where R1 designates a monovalent hydrocarbon group that has six or fewer carbon atoms and is free of aliphatic unsaturated bonds; R2 designates an alkylene group; and X is an organopolysiloxane residue represented by the following average unit formula: (YR12SiO1/2)a(SiO4/2)b (where R1 is the same as defined above; Y is a single bond, a hydrogen atom, a group represented by aforementioned R1, an epoxy-containing alkyl group, an alkoxysilylalkyl group, or an alkyl group with seven or more carbon atoms; however, in one molecule, at least one Y is a single bond, and at least one Y is an alkyl group with seven or more carbon atoms; “a” is a positive number; “b” is a positive number; and “a/b” is a number in the range of 0.2 to 4.Type: ApplicationFiled: September 5, 2007Publication date: May 6, 2010Inventor: Yoshitsugu Morita
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Patent number: 7704607Abstract: A silicone rubber composition containing 0.5-90% by weight of a metal powder and curable into a non-conductive silicone rubber having a volume resistivity of at least 1×109 ?·cm is useful for the sealing and encapsulation of electric and electronic parts because the metal powder is sulfided with a sulfur gas into a metal sulfide powder which prevents or retards the sulfur gas from reaching the electric and electronic parts.Type: GrantFiled: October 2, 2008Date of Patent: April 27, 2010Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroyasu Hara, Hideki Sugahara, Yoshifumi Inoue
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Patent number: 7699337Abstract: Provided is a liquid silicone rubber coating agent composition, including: (A) an organopolysiloxane containing at least one alkenyl group bonded to a silicon atom within each molecule, (B) a straight-chain organohydrogenpolysiloxane containing a single silicon atom-bonded hydrogen atom only at each molecular chain terminal, with a viscosity at 25° C. within a range from 0.001 to 1.0 Pa·s, (C) an organohydrogenpolysiloxane containing at least three silicon atom-bonded hydrogen atoms within each molecule, with a viscosity at 25° C. within a range from 0.001 to 10 Pa·s, (D) an addition reaction catalyst, (E) a finely powdered silica with a BET specific surface area of at least 50 m2/g, and (F) an adhesion imparting agent. Also provided is a curtain air bag with a rubber coating layer formed by curing this composition.Type: GrantFiled: February 3, 2006Date of Patent: April 20, 2010Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masayuki Ikeno, Hidenori Mizushima
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Patent number: 7695819Abstract: Solid organopolysiloxane elastomers particularly useful in gasketing applications are prepared from two normally solid addition-curable elastomer components which are not blended together prior to cure, but are contacted with each other, preferably in the form of sheets or films.Type: GrantFiled: September 30, 2005Date of Patent: April 13, 2010Assignee: Wacker Chemical CorporationInventors: Samer Farhat, Alan Miskell
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Patent number: 7687587Abstract: A silicone composition according to the present invention comprises (A) an organopolysiloxane resin having an average of at least two silicon-bonded alkenyl groups per molecule, (B) an organohydrogensilane in an amount sufficient to cure the composition, (C) an effective amount of a reactive diluent comprising (i) an organosiloxane having an average of at least two alkenyl groups per molecule and a viscosity of from 0.001 to 2 Pa·s at 25° C., wherein the viscosity of (C)(i) is not greater than 20% of the viscosity of component (A), and (ii) an organohydrogensiloxane having an average of at least two silicon-bonded hydrogen atoms per molecule and a viscosity of from 0.001 to 2 Pa·s at 25° C., in an amount sufficient to provide from 0.5 to 3 moles of silicon-bonded hydrogen atoms in (C)(ii) to moles of alkenyl groups in (C)(i), and (D) a catalytic amount of a hydrosilylation catalyst; and a cured silicone resin prepared by curing the silicone composition.Type: GrantFiled: November 1, 2005Date of Patent: March 30, 2010Assignee: Dow Corning CorporationInventors: Michael Andrew Smith, Bizhong Zhu
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Patent number: 7687563Abstract: A silicone rubber emulsion composition comprising (A) 100 parts diorganopolysiloxane having at least two silicon-bonded alkenyl groups, (E) 0 to 60 parts reinforcing silica filler, (B) 10 to 250 parts water containing a smectite clay, (C) 0.1 to 15 parts emulsifier, and (D) a cross-linking agent (e.g., an organohydrogenpolysiloxane) in an amount sufficient for cross-linking component (A) and a catalyst (e.g., a platinum-type catalyst). A method for preparing the aforementioned emulsion composition comprising mixing components (A) and (E) with other components in a high-speed stirrer-equipped mixer. A method of manufacturing a silicone rubber comprising either heating and dehydrating the aforementioned emulsion composition.Type: GrantFiled: May 21, 2004Date of Patent: March 30, 2010Assignee: Dow Corning Toray Company, Ltd.Inventors: Shinya Shirasaki, Tadanori Fukamachi, Mitsuo Hamada
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Patent number: 7683125Abstract: A method of manufacturing a silicone rubber comprises a first stage and a second stage. The first stage comprises (1-1) the step of preparing an aqueous dispersion composed of water that contains a water-soluble polymer (E), a finely powdered silica filler (B), a conductive filler (C), and a non-conductive inorganic filler (D) and (1-2) the step of preparing an aqueous emulsion by stirring and mixing the obtained aqueous dispersion with the following components: an organopolysiloxane (A) that contains silicon-bonded alkenyl groups, an emulsification agent (F), and a curing agent (G). The second stage obtains the silicon rubber either (2-1) by curing the aqueous emulsion prepared in the aforementioned first stage, forming a wet silicone-rubber like cured body, and then removing water from the aforementioned wet silicone-rubber like cured body; or (2-2) by dehydrating and curing the aqueous emulsion prepared in the aforementioned first stage.Type: GrantFiled: February 24, 2004Date of Patent: March 23, 2010Assignee: Dow Corning Toray Company, Ltd.Inventors: Shinya Shirasaki, Tadanori Fukamachi, Mitsuo Hamada
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Patent number: 7674348Abstract: When an air bag is prepared by laying a pair of silicone rubber-impregnated and/or coated base fabric pieces one on the other, with the coated surfaces of the pieces inside, and joining peripheral portions of the pieces together to form a bag, an addition curable silicone rubber composition which is loaded with aluminum hydroxide powder and cures into a silicone rubber having an elongation at break of at least 1000% is used as a sealer and applied to the peripheral portions of the base fabric pieces, thereby achieving improved adhesion therebetween.Type: GrantFiled: April 22, 2004Date of Patent: March 9, 2010Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takashi Aketa, Hiroyasu Hara
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Publication number: 20100041852Abstract: The present invention relates to the in situ silyl end group functionalization of polymer chains which have been prepared by means of atom transfer radical polymerization and the simultaneous removal of transition metals from polymer solutions.Type: ApplicationFiled: June 26, 2007Publication date: February 18, 2010Applicant: Evonik Roehm GmbHInventors: Sven Balk, Gerd Loehden
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Publication number: 20100036079Abstract: The present invention relates to the use of tocopherol as a co-catalyst in the ring opening polymerisation of cyclic siloxanes. The present invention further relates to a method for manufacturing hydrophilic polysiloxanes, wherein a hydrido-containing cyclic siloxane is reacted with a hydrophilic molecule comprising a carbon-carbon double bond, having the general formula (I) H2C?CH—(CHR)n—O—(CHR1CR2R3)mR4 or (II) H2C?CH—(CHR)n—R5, wherein n is an integer from 0 to 4, m is an integer from 0 to 5, R, R1, R2, R3 and R4 are each independently hydrogen or a C1 to C6 alkyl, R5 is a saturated cyclic hydrocarbon containing carbonyl group, in the presence of a first catalyst to obtain a monomer, and polymerising said monomer in the presence of a second catalyst and tocopherol as a co-catalyst.Type: ApplicationFiled: March 11, 2008Publication date: February 11, 2010Inventors: Emilia Tiitinen, Harri Jukarainen
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Patent number: 7659003Abstract: A pressure sensitive adhesive film comprising a substrate film and a pressure sensitive adhesive layer formed on a surface of the substrate film, said pressure sensitive adhesive layer being prepared from (A) a silicone composition comprising a diorganopolysiloxane having at least two alkenyl groups per molecule and (C) a polyorganosiloxane having an SiH bond, characterized in that the alkenyl groups are contained in an amount of from 0.0007 to 0.05 mole per 100 g of the diorganopolysiloxane (A) and that the polyorganosiloxane (C) is contained in such an amount that a molar ratio of the SiH bond to the alkenyl group of the diorganopolysiloxane (A) ranges from 0.5 to 20.Type: GrantFiled: October 27, 2005Date of Patent: February 9, 2010Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Shunji Aoki, Akira Yamamoto
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Patent number: 7655738Abstract: A thermoset and method of making such by crosslinking a mixture of a polyhedral oligomeric silsesquioxane having pendent siloxane groups or unsaturated carbon bonds and a siloxylcarborane compound having unsaturated carbon bonds.Type: GrantFiled: August 7, 2007Date of Patent: February 2, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M Keller, Manoj K. Kolel-Veetil
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Patent number: 7651560Abstract: The invention relates to an abhesive layer and to a method for producing an abhesive coating from cross-linked inorganic nanosols. It is an object of the invention to develop an abhesive layer, which has a strong abhesive effect especially with respect to adhesive liquids or pastes, such as printing inks and, while adhering well to the coated materials, has an improved, wear resistance. This objective is accomplished by an abhesive layer or abhesive coating of cross-linked inorganic nanosols with additions of polyorganosiloxanes, which form a three-dimensional network in the layer.Type: GrantFiled: December 6, 2005Date of Patent: January 26, 2010Assignee: Koenig & Bauer AGInventors: Gunter Risse, Michael Koch
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Patent number: 7642331Abstract: A hydrosilylation (polyaddition)-vulcanizing elastomer silicone composition, including (a) a vinylated polyorganosiloxane (POS), (b) at least one hydrogenated POS, (c) a platinum catalyst, (d) optionally a coupling agent, (e) optionally a mineral filler, (f) optionally a crosslinking inhibitor, and optionally a POS resin and functional additives. The composition has a dynamic viscosity between 1,000 and 7,000 mPa·s, at 25° C. before crosslinking and, after overall crosslinking by thermal effect has at least one of the following properties: a Shore A hardness of at least 2, a breaking strength of at least 0.5 N·mm?1, and a breaking elongation of at least 50%. Also disclosed is a composite which is fully impregnated by means of a 100% bicomponent (RTV-2) silicone liquid.Type: GrantFiled: July 16, 2003Date of Patent: January 5, 2010Assignee: Rhodia ChimieInventors: Alain Pouchelon, Maryline Quemin, Francis Lafaysse
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Patent number: 7635508Abstract: When an air bag is prepared by laying a pair of silicone rubber-impregnated and/or coated base fabric pieces one on the other, with the coated surfaces of the pieces inside, and joining peripheral portions of the pieces together to form a bag, an addition reaction curing type silicone rubber composition which cures into a silicone rubber having an elongation at break of at least 1000% is used as a sealer and applied to the peripheral portions of the base fabric pieces, thereby achieving improved adhesion therebetween.Type: GrantFiled: January 30, 2006Date of Patent: December 22, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takashi Aketa, Hiroyasu Hara, Yoshifumi Inoue
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Patent number: 7632909Abstract: A self-adhesive organopolysiloxane composition is provided comprising (A) an organopolysiloxane containing at least two silicon-bonded alkenyl groups, (B) an organohydrogenpolysiloxane containing at least two SiH groups, (C) a hydrosilylation catalyst, and (D) an adhesive component obtained by previously mixing (i) a titanium chelate catalyst and/or a tetraorganoxytitanium and (ii) a silane coupling agent and aging the mixture. The composition cures at room temperature or lower temperature while it is fully adhesive to metal and plastic substrates.Type: GrantFiled: June 22, 2006Date of Patent: December 15, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tadashi Araki, Takeshi Miyao
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Patent number: 7625636Abstract: An insulating-film forming composition comprising: at least one of: a dendrimer having a core portion and a branched end; and a polymer of the dendrimer; and a coating solvent, wherein the dendrimer has a cage silsesquioxane at the core portion, and has a polymerizable group at the branched end; an insulating film obtained by using the film forming composition; and an electronic device having the insulating film.Type: GrantFiled: September 19, 2006Date of Patent: December 1, 2009Assignee: FUJIFILM CorporationInventor: Koji Wariishi
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Publication number: 20090286899Abstract: Nanosize titanium dioxide having supported thereon metallic platinum are efficient hydrosilylation catalysts whose hydrosilylation activity may be increased by irradiation. The catalysts are prepared by depositing soluble platinum compounds on a titanium dioxide sol or titanium dioxide pigments followed by drying, calcining, and reduction to platinum metal. The catalysts are particularly useful in preparing addition-curable organopolysiloxane elastomers.Type: ApplicationFiled: December 1, 2005Publication date: November 19, 2009Applicant: WACKER CHEMIE AGInventors: Marco Hofmann, Hans-Jürgen Eberle
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Patent number: 7619035Abstract: The invention relates to a method of producing organically modified siloxanes and silanes by noble-metal-catalyzed reaction of siloxanes and/or silanes having at least one SiH group with a compound having one double bond, wherein the reaction is carried out in the presence of water.Type: GrantFiled: August 16, 2006Date of Patent: November 17, 2009Assignee: Goldschmidt GmbHInventors: Frauke Henning, Wilfried Knott
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Publication number: 20090275695Abstract: A process for forming a new group of siloxane-based compositions by a one-step co-hydrolysis and the compositions formed thereof. The siloxane-based compositions being functionalized with a carbon-carbon double (C?C) bond and a silicon-hydrogen (Si—H) bond. The C?C bond and hydrogen (H) each being attached directly to a silicon (Si) atom of the silicon-oxygen (Si—O) backbone of the siloxane-based composition. The C?C bond may be from a vinyl or an aromatic radical like a phenyl substituent. The C?C bond substituent provides the functionality needed for forming crosslinkages through standard dehydrocoupling catalysts without the need for siloxane fluids or organic compounds containing alkyl or aryl functional groups. The process provides for varying proportions of silanes as starting monomers to tailor the desired silicon, carbon, hydrogen and oxygen ratios in the siloxane-based compositions or resins.Type: ApplicationFiled: September 18, 2007Publication date: November 5, 2009Inventors: Qionghua Shen, Walter J. Sherwood, JR., Christopher K. Whitmarsh
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Patent number: 7612158Abstract: The invention relates to a process for the preparation of equilibration products of organosiloxanes by rearrangement of the siloxane bond to a cation exchange resin, the organopolysiloxanes thus obtainable and the use thereof.Type: GrantFiled: July 10, 2006Date of Patent: November 3, 2009Assignee: Goldschmidt AGInventors: Georg Burkhart, Juergen Droese, Horst Dudzik, Klaus-Dieter Klein, Wilfried Knott, Volker Moehring
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Patent number: 7612159Abstract: The invention relates to a process for working up polyethersiloxanes, wherein said polyethersiloxanes are treated with H2O2 and are separated from volatile components by separation methods known per se.Type: GrantFiled: December 18, 2003Date of Patent: November 3, 2009Assignee: Goldschmidt AGInventors: George Burkhart, Horst Dudzik, Wolfgang Hiersche, Wilfried Knott, Volker Möhring
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Patent number: 7605219Abstract: An asymmetric siloxane is made by reacting a silicone having the formula MHDxM?H where MH is R1R2HSiO1/2, M?H is R4R5HSiO1/2 and x is an integer 0?x?10 under selective hydrosilylation conditions in the presence of a precious metal hydrosilylation catalyst, with a first olefinic compound and in a second step, a monohydridosiloxane produced in the first step is reacted under hydrosilylating conditions with another olefinic compound different from the first olefinic compound.Type: GrantFiled: May 28, 2007Date of Patent: October 20, 2009Assignee: Momentive Performance MaterialsInventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
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Patent number: 7595113Abstract: LED devices encapsulated with silicone resin compositions comprising (A) a silicone resin having at least two alkenyl groups bonded to silicon atoms in a molecule, (B) an organohydrogensilane and/or organohydrogenpolysiloxane having at least two hydrogen atoms bonded to silicon atoms in a molecule, and (C) an addition reaction catalyst which cure into transparent products having heat resistance and discoloration resistance.Type: GrantFiled: May 26, 2005Date of Patent: September 29, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Kei Miyoshi
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Patent number: 7592070Abstract: Adhesive silicone elastomer sheet afforded by the cure of a hydrosilylation-curing silicone elastomer composition comprising: (A) an organopolysiloxane that contains at least one diorganosiloxane unit and that has at least two silicon-bonded alkenyl groups in each molecule, (B) an organopolysiloxane resin with the average unit formula: (R13SiO1/2)x(SiO4/2)1.0 in which R1 is substituted or unsubstituted monovalent hydrocarbon group and x is a number from 0.5 to 1.0, (C) an organopolysiloxane that contains at least two silicon-bonded hydrogen atoms in each molecule, and (D) a hydrosilylation catalyst. The adhesive silicone elastomer sheet is transparent, and whose surface exhibits a stable and permanent adhesiveness.Type: GrantFiled: August 27, 2004Date of Patent: September 22, 2009Assignee: Dow Corning Toray Company, Ltd.Inventors: Akiko Takanami, Yoshito Ushio, Osamu Mitani, Masayuki Onishi
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Patent number: 7592069Abstract: A silicone rubber coating composition comprising (A) a diorganopolysiloxane containing an average of at least two alkenyl groups, (B) silica powder having a specific surface area of at least 50 m2/g, (C) an organosilicon compound containing a ureido group, an isocyanuric acid ester modified with an organosilicon compound or a (partial) hydrolytic condensate thereof, and (D) a curing agent is applied and vulcanized to base fabric to form a coated fabric, from which airbags are prepared. The composition has a sufficient adhesion to withstand high temperature and abrupt elongation upon inflation of the airbag even after long-term storage under hot humid conditions.Type: GrantFiled: September 7, 2004Date of Patent: September 22, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Atsushi Yaginuma, Toshiyuki Ozai, Toshio Yamazaki, Masayuki Yoshida
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Patent number: 7592400Abstract: Addition curable elastomer compositions whose cured products exhibit high elongation at break and high tear propagation resistance are prepared from specific molecular weight ranges of alkenyl-terminal, alkenyl-pendant, and substantially non-functional organopolysiloxanes.Type: GrantFiled: May 8, 2006Date of Patent: September 22, 2009Assignee: Wacker Chemie AGInventor: Christof Woerner
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Patent number: 7585993Abstract: The invention relates to organosilane-modified polysiloxanes of the following formula: The invention additionally relates to the use of the organo-modified polysiloxanes for surface coating, and to their preparation.Type: GrantFiled: February 14, 2006Date of Patent: September 8, 2009Assignee: BYK-Chemie GmbHInventors: Karlheinz Haubennestel, Alfred Bubat, Daniela Betcke, Juergen Hartmann
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Publication number: 20090218592Abstract: A process is provided for producing curable polyorganosiloxanes where noble metal oxides are used as hydrosilylation catalysts. The noble metals can be used in solid granular form or as part of a fixed bed, and do not form part of the final curable composition or cured product. The cured polyorganosiloxanes have increased stability and can be used as encapsulation resins at a temperature far lower than 300° C., have excellent light transmission properties (colorless transparency) in a wavelength region of from ultraviolet light to visible light, light resistance, heat resistance, resistance to moist heat and UV resistance, and do not generate cracks and peeling even in use over a long period of time.Type: ApplicationFiled: February 28, 2008Publication date: September 3, 2009Inventors: Craig J. Hawker, Rosette G. Guino, Kelichi Seki, Kenichi Takizawa, Yutaka Moti
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Patent number: 7582697Abstract: A silicone rubber adhesive film comprising a composition formed from; (A) organopolysiloxane gum that has at least two alkenyl groups in each molecule; (B) wet-method hydrophobic reinforcing silica that has a specific surface area of at least 200 m2/g; (C) organohydrogenpolysiloxane that contains at least two silicon-bonded hydrogen atoms in each molecule; (D) mixture or reaction mixture from: (a) organopolysiloxane that has a branched molecular chain structure and that contains at least one silicon-bonded alkenyl group in each molecule and at least one silicon-bonded hydrolyzable group in each molecule, and (b) a silicon-containing compound that contains at least one silicon-bonded epoxy-functional hydrocarbon group and at least one silicon-bonded hydrolyzable group; and (E) curing accelerator.Type: GrantFiled: December 19, 2005Date of Patent: September 1, 2009Assignee: Dow Corning Toray Company, Ltd.Inventors: Kazuo Hirai, Hideo Miyazaki, Hiroaki Yoshida, Noriyuki Suganuma
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Patent number: 7582703Abstract: The invention pertains to a cross-linkable compound comprising a perfluoropolyether (PFPE) moiety derived from an hydroxy-terminated PFPE-oil, which is bonded through a spacer with an ethylenically unsaturated group, wherein the spacer extends over at least three carbon atoms. The invention further relates to a perfluoropolyether rubber obtainable by hydrosilating said cross-linkable compound and to an apparatus for transferring a toner image from an image-forming medium to a receiving medium.Type: GrantFiled: July 25, 2003Date of Patent: September 1, 2009Assignee: Oce-Technologies B.V.Inventors: Ronald Hubert Carlos Cornelissen, Karel Pieter Daniël Van Zeeventer, Peter Richard Markies, Guy Peter Maria Verbeek, Joannes Adrianus Verbunt, Sandra Mei-Iing De Jong, Peter Maria Cornelis Zeelen
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Patent number: 7579425Abstract: A method for making high softening point linear and cyclic alkylsilicone waxes includes reacting a C30+ alpha olefin wax with a silicone hydride polymer in the presence of a catalyst. The high softening point linear and cyclic alkylsilicone waxes have softening points approximating those of natural waxes and, in consequence, can be used in applications which traditionally employ natural waxes.Type: GrantFiled: October 17, 2006Date of Patent: August 25, 2009Assignee: Clariant Life Science Molecules (Florida), Inc.Inventors: W. Leonard Terry, Jr., Gary E. LeGrow
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Patent number: 7572842Abstract: The present invention relates to a multicomponent automixable putty impression material, its components, mixtures of the components and a method for obtaining impressions with the multicomponent automixable putty impression material.Type: GrantFiled: July 30, 2004Date of Patent: August 11, 2009Assignee: 3M ESPE AGInventors: Joachim W. Zech, Peter Bissinger, Henning Hoffmann, Wolf Steiger
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Patent number: 7572514Abstract: A process for production of an assembly including several silicone elements crosslinked by polyaddition of ?Si—H units onto ?Si-alkenyl (preferably ?Si-vinyl) units, the elements adhering to one another without detracting from their mechanical properties. The process includes: (I) forming (1st coating) a silicone element (i) with a liquid silicone preparation (i) containing polyorganosiloxanes (POS) A with ?Si-vinyl units, (POS) B with ?Si—H units, a platinum catalyst C; (II) crosslinking so that (i) has a surface density SD of unreacted, residual vinyl, per nm2, of 0.0100?SD?0.0040; (III) optionally repeating steps (I) and (II) n times to give n elements (i) that adhere to one another; (IV) forming (2nd coating) a silicone element (ii) with a liquid silicone preparation (ii) of the same type as described above; (v) crosslinking to give crosslinked (ii) that adheres to (i).Type: GrantFiled: June 17, 2003Date of Patent: August 11, 2009Assignee: Rhodia ChimieInventors: Fabienne Howe, Alain Pouchelon
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Patent number: 7566756Abstract: An addition curable silicone resin composition is provided. The composition includes two types of alkenyl group-containing organopolysiloxanes, and two types of organohydrogenpolysiloxanes, and a platinum group catalyst. The composition is cured to form a hard cured product with excellent flexibility and minimal surface tack, suited to a silicone lens.Type: GrantFiled: April 3, 2008Date of Patent: July 28, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Tsutomu Kashiwagi
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Publication number: 20090183320Abstract: The present disclosure provides a composition for treating keratin fibers, for example, human keratin fibers such as the hair. The present disclosure provides a composition for dyeing keratin fibers, comprising: at least one compound X and at least one compound Y, wherein at least one of the compounds X and Y is a silicone compound, wherein when X and Y are placed in contact with each other they react together via a hydrosilylation reaction, a condensation reaction, or a crosslinking reaction in the presence of at least one peroxide; and at least one alkoxysilane comprising a single silicon atom.Type: ApplicationFiled: December 20, 2007Publication date: July 23, 2009Inventor: Katarina Benabdillah
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Patent number: 7563515Abstract: The present invention relates to silicone compositions that can be used to control the interface at which release occurs when a bi-layer or multi-layer structure comprising compositions as separate layers, and a pattern of a different material sandwiched in between, is separated. The present invention further relates to a process that utilizes these compositions to control the transfer or release of patterns deposited on a substrate.Type: GrantFiled: October 22, 2004Date of Patent: July 21, 2009Assignee: Dow Corning CorporationInventors: Robert Ekeland, Dimitris Katsoulis, Bizhong Zhu
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Patent number: 7563855Abstract: Flame-retardant compositions contain peroxidically crosslinking, addition-crosslinking or condensation-crosslinking silicone rubber and at least one rhodium compound or iridium compound or mixtures of the two. The compositions exhibit increased flame retardancy as compared to similar compositions containing platinum complexes, and especially when used in conjunction with the latter, produce stable ceramic layers upon combustion.Type: GrantFiled: December 14, 2005Date of Patent: July 21, 2009Assignee: Wacker Chemie AGInventors: Peter Jerschow, Peter Gerhardinger
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Patent number: 7563843Abstract: An amino compound having a secondary amino group directly bonded to a phenyl group is modified by silylating the secondary amino group. When the silylated amino compound is compounded in a silicone composition comprising an organopolysiloxane containing at least two lower alkenyl groups, an organohydrogenpolysiloxane, and a platinum base curing catalyst, the composition is improved in flame retardance to the level of UL-94 V-0 without sacrificing the activity of the curing catalyst.Type: GrantFiled: May 16, 2003Date of Patent: July 21, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Toshiyuki Ozai, Yoshifumi Inoue
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Patent number: 7560167Abstract: The invention relates to coating formulations comprising (i) a silicone-based coating component susceptible to misting under mist-producing conditions; and (ii) an anti-misting amount of a branched polysiloxane component resulting from copolymerizing under hydrosilylation conditions a component mixture comprising (a) one or more organosilicon compounds containing at least two unsaturated hydrocarbon functional groups per molecule, and (b) one or more silylhydride-containing compounds containing at least two silylhydride functional groups per molecule, with the provision that (i) at least one component (a) or (b) contains at least three functional groups per molecule; (ii) a component (a) or (b) having a higher number of functional groups per molecule is present in a molar amount equal to or lower than a molar amount of the other component (a) or (b) having a lower number of functional groups per molecule; and (iii) unsaturated hydrocarbon compounds are excluded from the component mixture.Type: GrantFiled: September 1, 2006Date of Patent: July 14, 2009Assignee: Momentive Performance Materials Inc.Inventors: David S. Schlitzer, John P. Banevicius
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Publication number: 20090176958Abstract: A process for preparing a cationically photopolymerizable siloxane oligomer, that includes: combining a platinum group catalyst, a hydrosiloxane compound selected from and a vinyl or allyl compound comprising a cationically photopolymerizable functionality; and then contacting the product with oxygen in the presence of the catalyst to form the cationically photopolymerizable multifunctional siloxane oligomer. R1 and R3 are independently fluoroethyl, methyl or phenyl.Type: ApplicationFiled: March 4, 2009Publication date: July 9, 2009Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventor: James V. Crivello
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Publication number: 20090171056Abstract: Ruthenium compounds which have, in their ligand sphere, at least one ?6-bonded arene ligand and a silyl ligand; ruthenium complexes which have, in their ligand sphere, at least one ?6-bonded arene ligand to which is bonded a silyl or siloxy radical directly or via a spacer, and ruthenium complexes which have, in their ligand sphere, at least one ?6-bonded arene ligand and at least one further ligand to which is bonded a silyl or siloxy radical directly or via a spacer are useful as hydrosilylation catalysts.Type: ApplicationFiled: March 28, 2007Publication date: July 2, 2009Applicant: WACKER CHEMIE AGInventors: Marco Hofmann, Hans-Juergen Eberle, Johann Weis
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Publication number: 20090171014Abstract: Methods of forming blocked-mercapto alkoxy-modified silsesquioxanes are provided. The blocked-mercapto alkoxy-modified silsesquioxane compounds contain an alkoxysilane group that participates in an alkoxysilane-silica reaction as a silica dispersing agent in rubber, with the release of zero to about 0.1% by weight of the rubber as alcohol (a volatile organic compound (VOC)), during compounding and further processing. The blocked-mercapto alkoxy-modified silsesquioxane compounds also contain a blocked mercapto group which, when de-blocked, allows the mercapto group to interact with the polymer(s) in a rubber composition. Further described are rubber compounds containing the blocked-mercapto alkoxy-modified silsesquioxanes.Type: ApplicationFiled: December 29, 2008Publication date: July 2, 2009Inventors: William L. Hergenrother, Chenchy Jeffrey Lin, James H. Pawlow, Terrence E. Hogan
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Publication number: 20090171055Abstract: The present invention provides novel low temperature thermal, solventless silicone release coatings for temperature sensitive films. The invention utilizes novel hydridosiloxane crosslinking fluid and hydrosilylation catalyst in conjunction with standard additives, which produce curable polysiloxane release coatings on temperature sensitive films.Type: ApplicationFiled: December 31, 2007Publication date: July 2, 2009Inventors: John Kilgour, Jos Delis, Gunnar Hoffmueller
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Patent number: 7553915Abstract: A silicone composition is provided comprising (A) an organopolysiloxane of resin structure consisting of R1SiO1.5, R22SiO, and R3aR4bSiO(4?a?b)/2 units, wherein R1, R2, and R3 are methyl, ethyl, propyl, cyclohexyl or phenyl, R4 is vinyl or allyl, a is 0, 1 or 2, b is 1 or 2, a+b is 2 or 3, the number of recurring R22SiO units being 10 to 300, (B) an organohydrogenpolysiloxane of resin structure consisting of R1SiO1.5, R22SiO, and R3cHdSiO(4?c?d)/2 units, wherein R1, R2, and R3 are as defined above, c is 0, 1 or 2, d is 1 or 2, c+d is 2 or 3, the number of recurring R22SiO units being 10 to 300, and (C) a platinum catalyst. The silicone composition cures into a product exhibiting flexibility and minimized surface tack, and can be effectively molded on the existing molding machines.Type: GrantFiled: December 5, 2006Date of Patent: June 30, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Tsutomu Kashiwagi
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Patent number: 7550547Abstract: The present invention provides a curable composition which has a high recovery ratio, a high creep resistance, a practical curability and storage stability. The present invention relates to a curable composition comprising a reactive silicon group containing organic polymer (A) and a carboxylic acid (B), wherein the composition comprises (I), as the carboxylic acid (B), a carboxylic acid (C) in which the carbon adjacent to the carbonyl group is a quaternary carbon atoms and/or the composition comprises (II) a metal carboxylate (D) formed between a carboxylic acid in which the carbon atoms adjacent to the carbonyl group is a quaternary carbon atoms and a metal atom of 208 or less in atomic weight.Type: GrantFiled: March 29, 2005Date of Patent: June 23, 2009Assignee: Kaneka CorporationInventors: Katsuyu Wakabayashi, Toshihiko Okamoto, Hiroshi Ando
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Patent number: 7547743Abstract: A heat conductive silicone rubber composition comprising (A) an organopolysiloxane containing, on the average, at least 0.1 silicon-bonded alkenyl radical and having a viscosity of 50-100,000 mPa·s at 25° C., (B) an organopolysiloxane containing, on the average, at least 2 SiH radicals and having a viscosity of 1-100,000 mPa·s at 25° C., (C) a heat conductive filler, (D) a platinum catalyst, and (E) a specific organopolysiloxane having a molecular weight of at least 10,000, is easy to handle and mold, and especially smooth in flow, even when heavily loaded with the filler.Type: GrantFiled: May 12, 2005Date of Patent: June 16, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tomoyuki Goto, Kei Miyoshi