Wherein One Of Said Silicon Materials Contains Si-h Bond Patents (Class 525/478)
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Publication number: 20080027164Abstract: A curable silicone composition is provided that includes a carboxylic acid scavenging reactant with an amount sufficient to reduce an odor associated with silicone curing. The carboxylic acid scavenging reactant illustratively includes a carbodiimide in the form of a monocarbodiimide or a polycarbodiimide; an aziridine; and a combination thereof. The composition optionally includes adjuvant provided to modify the physical or cure properties of the cured silicone. In particular, the composition is readily compatible with the inclusion of calcium carbonate, the use of which would otherwise cause gassing and/or curing upon storage. The composition optionally includes a condensation catalyst in the form of an organometallic compound with the metal ions of titanium, aluminum, tin, calcium, and zinc being particularly well suited for the function of catalyzing condensation reactions.Type: ApplicationFiled: July 25, 2007Publication date: January 31, 2008Applicant: ILLINOIS TOOL WORKS, INC.Inventor: Hans E. Haas
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Patent number: 7323250Abstract: Provided is a curable silicone resin composition including (A) a siloxane-based compound containing at least 2 addition reactive carbon-carbon double bonds within each molecule, (B) a siloxane-based compound containing at least 2 hydrogen atoms bonded to silicon atoms within each molecule, (C) a hydrosilylation reaction catalyst, (D) a phenol-based antioxidant, and (E) a hindered amine compound. Also provided are an optical semiconductor sealing material including such a composition, and an optical semiconductor device that has been sealed with such a composition. The curable silicone composition generates a cured product with high hardness and strength, excellent transparency, and excellent light transmittance and photostability particularly in the short wavelength region.Type: GrantFiled: March 24, 2005Date of Patent: January 29, 2008Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Eiichi Tabei, Kei Miyoshi
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Publication number: 20080017296Abstract: The invention is an adhesive composition comprising one or more polymers having a flexible backbone and silane moieties capable of silanol condensation; one or more hydrophobic silanes having one or more hydrocarbyloxy groups and one or more hydrocarbyl groups; one or more catalysts for the reaction of silane moieties with active hydrogen containing compounds. Preferably, the adhesive composition further comprises one or more heat stabilizers and/or light stabilizers. In another embodiment, the invention is a method of bonding a window to a coated substrate, such as a window in a vehicle, which comprises applying to the window or the coated substrate an adhesive as described; contacting the window with the coated substrate wherein the adhesive is located between the window and the substrate; and allowing the adhesive to cure.Type: ApplicationFiled: July 3, 2007Publication date: January 24, 2008Inventors: Huide D. Zhu, Daniel P. Heberer
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Patent number: 7312296Abstract: A silicone adhesive having (A) an organopolysiloxane partial condensate of (i) a diorganopolysiloxane end-capped with a hydroxyl radical and (ii) an organopolysiloxane copolymer having hydroxyl radicals and having R33SiO1/2 units and SiO4/2 units wherein R3 is hydroxyl or a monovalent hydrocarbon radical, (B) a silane or siloxane compound having a silicon atom-bonded alkoxy radical and/or an epoxy radical, and (C) a crosslinking agent exhibits pressure-sensitive adhesion and permanent adhesion.Type: GrantFiled: August 21, 2003Date of Patent: December 25, 2007Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Shouhei Kozakai, Akio Suzuki
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Publication number: 20070293623Abstract: A phosphor-containing addition-curable silicone resin composition is provided. The composition is capable of forming a cured product which exhibits excellent crack resistance and shock resistance, and minimal surface tackiness. The composition includes (A) an organopolysiloxane including R1SiO1.Type: ApplicationFiled: June 13, 2007Publication date: December 20, 2007Applicant: Shin-Etsu Chemical Co., LtdInventors: Tsutomu KASHIWAGI, Toshio Shiobara
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Patent number: 7309734Abstract: An extremely durable, stable and fast-curing elastomeric composition suitable for coating all types of architectural glass is disclosed.Type: GrantFiled: September 30, 2005Date of Patent: December 18, 2007Assignee: Industrial Control Development, Inc.Inventor: Larry D. Vockler
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Patent number: 7307122Abstract: A silicone rubber coating composition which cures into a silicone rubber having a tear strength of 25-50 kN/m and a peeling bond strength of 30-60 N/cm is suited for coating of hollow weave type air bags. A hollow weave type air bag coated with the coating composition can be instantaneously inflated while the bag prevents the silicone rubber film from being peeled from the base fabric, eliminates inflating gas leakage, and retains an acceptable inflation time.Type: GrantFiled: June 27, 2005Date of Patent: December 11, 2007Assignee: Shin-Estu Chemical Co., Ltd.Inventors: Masayuki Ikeno, Atsushi Yaginuma, Syuichi Azechi, Takeshi Miyao
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Publication number: 20070264510Abstract: Self-adhesive addition-crosslinking silicone compositions contain (A) at least one diorganopolysiloxane, (B) at least one SiH-containing crosslinker containing a defined fraction of radicals, with the proviso that the viscosity of the organohydropolysiloxane (B) as determined at 25° C. is 5 mPa·s to 5 Pa·s, (C) at least one organohydrooligosiloxane, and (D) at least one hydrosilylation catalyst.Type: ApplicationFiled: May 8, 2007Publication date: November 15, 2007Applicant: WACKER CHEMIE AGInventor: Armin Fehn
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Patent number: 7291670Abstract: Addition crosslinkable organopolysiloxane compositions employ specific rhodium catalysts. The compositions exhibit storage stability and crosslink effectively to provide highly transparent and colorless organopolysiloxane elastomers.Type: GrantFiled: July 24, 2003Date of Patent: November 6, 2007Assignee: Wacker Chemie AGInventors: Armin Fehn, Jürgen Weidinger, Adelheid Dürnberger
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Publication number: 20070249790Abstract: A colorless transparent silicone lens produced by thermally curing a silicone resin composition comprising (A) an organopolysiloxane having a resin structure comprising R1SiO1.5 unit, R22SiO unit, and R3aR4bSiO(4-a-b)/2 unit wherein R1, R2, and R3 are independently methyl group, ethyl group, propyl group, cyclohexyl group, or phenyl group, R4 is vinyl group or allyl group, a is 0, 1, or 2, b is 1 or 2, and a+b is 2 or 3, and wherein number of repetition of the R22SiO unit is 5 to 300, (B) an organohydrogen polysiloxane having a resin structure comprising R1SiO1.5 unit, R22SiO unit, and R3cHdSiO(4-c-d)/2 unit wherein c is 0, 1, or 2, d is 1 or 2, and c+d is 2 or 3, and wherein number of repetition of the R22SiO unit is 5 to 300, the component, and (C) a platinum group catalyst. A silicone lens having excellent flexibility, transparency, and moldability as well as reduced surface tackiness is provided.Type: ApplicationFiled: April 20, 2007Publication date: October 25, 2007Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Tsutomu Kashiwagi, Toshio Shiobara
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Publication number: 20070244230Abstract: The present invention relates to substances, crosslinkable by attachment of an Si-bonded hydrogen atom to an aliphatic multiple bond, which comprise at least one compound of the formula R3P(O)(OH)2 ??(III) and/or the derivatives thereof, R3 being an optionally substituted hydrocarbon radical which can be interrupted by heteroatoms.Type: ApplicationFiled: April 3, 2007Publication date: October 18, 2007Applicant: WACKER CHEMIE AGInventors: Torsten Sixt, Franz Neuhauser
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Patent number: 7282270Abstract: A curable organopolysiloxane composition includes: (A) a straight-chain organopolysiloxane having per molecule at least two silicon-bonded alkenyl groups and at least one silicon-bonded aryl group; (B) a branched-chain organopolysiloxane with siloxane units represented by the following general formula: RSiO3/2, where R is a substituted or unsubstituted monovalent hydrocarbon group, and having per molecule at least one silicon-bonded alkenyl group and at least one silicon-bonded aryl group; (C) an organopolysiloxane having in one molecule at least two silicon-bonded hydrogen atoms; and (D) a hydrosilylation catalyst; and a semiconductor device with a semiconductor element coated with a cured body of the aforementioned composition.Type: GrantFiled: September 8, 2003Date of Patent: October 16, 2007Assignee: Dow Corning Toray Silicone Company, Ltd.Inventors: Yoshitsugu Morita, Tomoko Kato, Atsushi Togashi, Hiroji Enami
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Publication number: 20070228669Abstract: The present invention provides rubber sealing members having an exterior surface adapted to sealingly engage an inner surface of a chamber of the medical device, the exterior surface of the sealing member having a coating thereon prepared from a curable composition including: (a) a first organopolysiloxane having at least two alkenyl groups; and (b) a second organopolysiloxane having at least two pendant hydrogen groups, the second organopolysiloxane being different from the first organopolysiloxane, wherein at least one of the first organopolysiloxane, the second organopolysiloxane or an optional third organopolysiloxane of the curable composition comprises a fluoro group.Type: ApplicationFiled: March 29, 2007Publication date: October 4, 2007Applicant: BECTON, DICKINSON AND COMPANYInventors: Yongming Liu, Xia Zhao
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Publication number: 20070232750Abstract: An adhesive comprising (A) an organopolysiloxane containing, on average, at least two silicon-bonded alkenyl groups in a molecule, (B) an organohydrogenpolysiloxane containing, on average, at least two SiH groups in a molecule, (C) a calcium carbonate powder surface treated with a paraffinic compound and having a specific surface area of up to 6 m2/g, and (D) a platinum group metal catalyst is fully adherent to silicone rubber and shelf stable.Type: ApplicationFiled: April 2, 2007Publication date: October 4, 2007Inventors: Mitsuhiro Iwata, Yoshifumi Harada
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Publication number: 20070225433Abstract: A composition comprising (A) a cyclopolysiloxane represented by the following formula (1) having a norbornenyl group and/or a vinyl group each bonded to a silicon atom, (B) a polycyclopolysiloxane comprising a cyclopolysiloxane unit represented by the following formula (2) (C) a cyclopolysiloxane represented by the following formula (3) having two SiH bonds and (D) an addition reaction catalyst. The composition forms a cured product which is flexible and resistant to heat and organic solvents and is suitable as a binder resin for powder.Type: ApplicationFiled: March 22, 2007Publication date: September 27, 2007Inventor: Masatoshi Arai
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Publication number: 20070225454Abstract: Optoelectronic devices include a polymer composition derived from reaction between a hydrosiloxane and a polyfluorene comprising structural units of formula I wherein R1 and R2 are independently alkyl, substituted alkyl, alkenyl, alkynyl, substituted alkenyl, substituted alkynyl, alkyloxy, substituted alkoxy, alkenoxy, alkynoxy, substituted alkenoxy, substituted alkynoxy, or a combination thereof; Ar1 and Ar2 are independently aryl or substituted aryl; m and n are independently 0 or 1; and at least one of R1 and R2 is alkenyl, alkynyl, substituted alkenyl, or substituted alkynyl.Type: ApplicationFiled: December 14, 2006Publication date: September 27, 2007Applicant: GENERAL ELECTRIC COMPANYInventors: LARRY NEIL LEWIS, JAMES ANTHONY CELLA
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Patent number: 7273911Abstract: Self-adhesive addition-crosslinking silicone compositions, contain two adhesion promoters, a first, multinuclear aromatic compound containing at least one moiety of aliphatic unsaturation, and a low viscosity organopolysiloxane having at least one terminal, silicon-bonded hydrogen. The addition curable materials exhibit strong adhesion to substrates, even substrates which have exhibited problematic adhesion to silicone elastomers in the past.Type: GrantFiled: July 21, 2004Date of Patent: September 25, 2007Assignee: Wacker Chemie AGInventors: Armin Fehn, Philipp Mueller
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Publication number: 20070218299Abstract: A thermosetting composition comprising (A) an organopolysiloxane and (B) a curing catalyst, characterized in that the organopolysiloxane (A) has at least two alkenyl groups per molecule and a phenyl group in an amount of from 10 to 99% of whole substituents bonded to silicon atoms of the organopolysiloxane, and softens or melts at a temperature of from 30° C. to a temperature lower than an onset temperature of heat curing of the composition.Type: ApplicationFiled: March 15, 2007Publication date: September 20, 2007Inventor: Syuichi Azechi
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Patent number: 7271215Abstract: An addition reaction-curable liquid silicone rubber composition includes an organopolysiloxane containing at least one Si-bonded vinyl group only at each end of its backbone and having a viscosity of from 1 to 1,000 Pa·s at 25° C., an organopolysiloxane containing at least two Si-bonded vinyl groups only in side chains on its backbone and having a viscosity of from 0.1 to 100 Pa·s at 25° C., the amount of siloxane units bonded to the vinyl groups being from 2 to 20 mole % of its total siloxane units, finely divided silica having a specific surface area of at least 50 m2/g, hexamethyldisilazane, water, an organohydrogenpolysiloxane containing at least two Si-bonded hydrogen atoms per molecule, and a hydrosilation catalyst. Another addition reaction-curable liquid silicone rubber composition additionally includes a specific non-functional dimethylpolysiloxane.Type: GrantFiled: June 14, 2005Date of Patent: September 18, 2007Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masayuki Ikeno, Shigeki Shudo, Naoki Yamakawa, Yujiro Taira
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Publication number: 20070197742Abstract: Heat curable silicone compositions comprising (A) an alkenyl-containing organopolysiloxane with 0.5-10 wt % of hydroxyl groups, (B) an organohydrogenpolysiloxane, (C) an addition reaction catalyst, and (D) an epoxy and/or alkoxy group-containing organohydrogenpolysiloxane, epoxy and/or alkoxy group-containing organosilane, or non-siliceous epoxy compound cure into products which have a high hardness, transparency, heat resistance and light resistance, and do not turn white turbid even when held in a hot humid atmosphere.Type: ApplicationFiled: February 15, 2007Publication date: August 23, 2007Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventor: Naoki Yamakawa
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Publication number: 20070167564Abstract: A heat conductive silicone composition comprises: (A) an alkenyl group-bearing organopolysiloxane, (B) an organohydrogenpolysiloxane having at least two Si—H groups therein, (C) a filler of aluminum powder or metal oxide powder, and (D) a coupling agent selected from titanate-based or aluminate-based coupling agent.Type: ApplicationFiled: July 20, 2006Publication date: July 19, 2007Applicant: FOXCONN TECHNOLOGY CO., LTD.Inventors: CHING-TAI CHENG, NIEN-TIEN CHENG
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Publication number: 20070166470Abstract: Provided is a curable silicone rubber composition, comprising (A) an organopolysiloxane containing two or more aliphatic unsaturated bonds within each molecule, having a viscosity at 25° C. within a range from 10 to 100,000 mm2/s, and containing a phenyl group and/or cyclohexyl group, (B) an organopolysiloxane with a resin structure comprising SiO2 units and (R1)3SiO0.5 units (wherein, each R1 represents, independently, a vinyl group, an allyl group, or a monovalent hydrocarbon group that contains no aliphatic unsaturated bonds, provided one or more of all the R1 groups within this component (B) represent, independently, a phenyl group or a cyclohexyl group), (C) an organohydrogenpolysiloxane, and (D) a platinum group metal-based catalyst, wherein the component (B) exists in a quantity that represents from 20 to 80% by mass of the combination of the component (A) and the component (B).Type: ApplicationFiled: January 16, 2007Publication date: July 19, 2007Applicant: Shin-Etsu Chemical Co., Ltd.Inventor: Tsutomu KASHIWAGI
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Patent number: 7244800Abstract: The invention is directed to a thermal addition curable solventless silicone release composition having a reduced coefficient of friction and improved slip characteristics. The invention is also directed to a method for producing a thermal addition curable solventless silicone release composition on a substrate by applying the thermal addition curable solventless release composition of the invention to a substrate and curing the coating on the substrate using heat. The invention is further directed to a thermal addition curable solventless silicone release coated article having a reduced coefficient of friction and improved slip characteristics.Type: GrantFiled: December 9, 2004Date of Patent: July 17, 2007Assignee: Rhodia ChimieInventors: Michael D. Radl, James G. Ellison, Nolan R. Stewart
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Patent number: 7214735Abstract: The present invention includes a method of sealing an enclosable container, the method entails positioning a sealant material within the enclosable container, and closing the enclosable container to compress the sealant material. The sealant material includes a silicone gel, a microsphere filler, and optionally, a silica filler.Type: GrantFiled: February 2, 2004Date of Patent: May 8, 2007Assignee: 3M Innovative Properties CompanyInventor: Carole Jego Stora
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Patent number: 7198639Abstract: Soft, durable, polymeric compositions with one or more reactive polyhedral oligomeric silsesquioxane reinforcing agents and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein.Type: GrantFiled: September 13, 2002Date of Patent: April 3, 2007Assignee: Bausch & Lomb IncorporatedInventors: Yu-Chin Lai, James A. Bonafini, Jr.
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Patent number: 7176270Abstract: Provided is a curable composition including (A) an addition reaction product of (a) a compound with 2 silicon atom-bonded hydrogen atoms within each molecule, having a general formula (1): wherein, A is a bivalent group represented by a formula (2): (wherein, R? represents an unsubstituted or substituted monovalent hydrocarbon group of 1 to 12 carbon atoms, or an alkoxy group of 1 to 6 carbon atoms, and n represents an integer from 0 to 100), or a group having a structural formula (3): and each R represents an unsubstituted or substituted monovalent hydrocarbon group of 1 to 12 carbon atoms, or an alkoxy group of 1 to 6 carbon atoms, and (b) a polycyclic hydrocarbon with 2 addition reactive carbon-carbon double bonds within each molecule, said addition reaction product containing at least two addition reactive carbon-carbon double bonds in each molecule, (B) a compound with at least 3 silicon atom-bonded hydrogen atoms within each molecule, and (C) a hydrosilylation reaction catalyst.Type: GrantFiled: October 8, 2004Date of Patent: February 13, 2007Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Eiichi Tabei
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Patent number: 7173092Abstract: A method is disclosed for preparing an elastomeric base composition comprising: (I) mixing (A) a fluorocarbon elastomer with (B) a compatibilizer, (C) an optional catalyst, (II) mixing the product of step (I) with (D) a silicone base comprising a curable organopolysiloxane, (E), an optional crosslinking agent, (F) a cure agent in an amount sufficient to cure said organopolysiloxane; and (III) dynamically vulcanizing the organopolysiloxane, wherein the weight ratio of fluorocarbon elastomer (A) to silicone base (B) in the elastomeric base composition ranges from 95:5 to 30:70. The cured rubber compositions obtained from the elastomeric base compositions herein have good fuel resistance properties.Type: GrantFiled: June 6, 2003Date of Patent: February 6, 2007Assignee: Dow Corning CorporationInventors: Gerald Gornowicz, Igor Chorvath, Lauren Tonge, Yung Kim, David Romenesko, Kermit Kwan, Stephen Warren
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Patent number: 7153583Abstract: Liquid silicone rubber coating compositions which include specific amounts of an organopolysiloxane bearing at least two alkenyl groups, an organohydrogenpolysiloxane bearing at least two silicon-bonded hydrogen atoms, a crosslinking reaction catalyst which is an organic peroxide, a finely divided silica and a tackifier have a good coatability even when not diluted with a solvent. In airbags obtained by coating such a composition onto a woven base fabric and curing the applied composition, the cured coat does not delaminate during airbag inflation, thus minimizing inflator gas leakage and resulting in excellent inflation time sustainability.Type: GrantFiled: May 6, 2004Date of Patent: December 26, 2006Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Syuuichi Azechi, Hidenori Mizushima
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Patent number: 7153912Abstract: Branched, alkenyl-functional organopolysiloxanes prepared by reacting an organic compound having at least two aliphatic double bonds with an organopolysiloxane having more than one Si-bonded hydrogen atom, in the presence of a hydrosilylation catalyst, and in a stoichiometric ratio of aliphatic double bonds to Si-bonded hydrogen such that an alkenyl-functional product is obtained, function as highly effective antimisting additives in the high speed coating of substrates with crosslinkable silicone compositions.Type: GrantFiled: February 20, 2003Date of Patent: December 26, 2006Assignee: Wacker Chemie AGInventors: Hans Lautenschlager, Christian Herzig
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Patent number: 7153913Abstract: Branched organopolysiloxanes prepared by reacting an organic compound having minimally three aliphatically unsaturated groups with a stoichiometric excess of an organopolysiloxane having terminal Si-bonded hydrogen is effective as an antimisting additive in the high speed coating of substrates with silicone compositions. The antimisting additives may also be equilibrated with linear, branched, or cyclic organopolysiloxanes.Type: GrantFiled: February 20, 2003Date of Patent: December 26, 2006Assignee: Wacker Chemie AGInventors: Hans Lautenschlager, Reinhard Stallbauer
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Patent number: 7153914Abstract: Addition-crosslinking silicone resin compositions containing selected high functionality addition curable organosilicon compounds can be cured at relatively low temperatures and can produce highly transparent, hard polymers which are suitable for many uses, in particular for the potting or embedding of electrical componts such as LEDs.Type: GrantFiled: December 13, 2004Date of Patent: December 26, 2006Assignee: Wacker Chemie AGInventors: Gerhard Staiger, Wolfgang Schattenmann
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Patent number: 7135512Abstract: 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 olefin 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: November 14, 2006Assignee: General Electric CompanyInventors: John Alfred Kilgour, Edwin C. Cua, John A. Cummings
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Patent number: 7128977Abstract: The addition of silicone rubber fine particles to a composition comprising an organopolysiloxane having at least two alkenyl groups, an organohydrogenpolysiloxane having at least three SiH groups and a catalyst yields a composition which when coated onto any substrate, forms a coating whose surface is extremely reduced in gloss and highly uniform. Using the coating of the composition as a release sheet, synthetic resin sheets having matte surfaces can be readily manufactured.Type: GrantFiled: July 25, 2003Date of Patent: October 31, 2006Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kenji Yamamoto, Masahiko Ogawa
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Patent number: 7129309Abstract: Shaped bodies comprise addition-crosslinked silicone elastomers crosslinked in the presence of at least one rhodium or iridium catalyst or mixtures of both catalyst types. The shaped bodies may be made transparent and colorless and are well suited for use as food and baking molds in the food industry. The catalyzed addition-crosslinkable components display excellent pot life as well as good high temperature cure.Type: GrantFiled: July 31, 2003Date of Patent: October 31, 2006Assignee: Wacker-Chemie GmbHInventors: Armin Fehn, Juergen Weidinger
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Patent number: 7122290Abstract: Holographic storage mediums, methods for producing the storage medium, methods for storing data in the holographic storage medium, and optical storage reading methods are described herein. The holographic storage medium can be formed from a composition comprising a thermally crosslinked polysiloxane binder; a photoactive material; and a photo-initiator, wherein the photoactive material has a concentration that remains about the same before and after a thermal cure process to form the thermally crosslinked polysiloxane binder.Type: GrantFiled: June 15, 2004Date of Patent: October 17, 2006Assignee: General Electric CompanyInventors: Michael Jeffrey McLaughlin, Marc Dubois, James Edward Pickett, Peifang Tian
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Patent number: 7119143Abstract: A method of choosing a formulation for a carrier free pad having desired thermal conductivity and elastomeric properties therein which will produce a pad having a desirable thermal impedance. A combination of a vinyl functional fluid, hydrogen capped polysiloxane, cross linker and powder in the form of heat conductive particles with or without electrically insulating particles is utilized which is variable according to the desired thickness, elastomeric and thermal characteristics of the pad. Inhibitors and catalysts may be utilized to control reaction rate. The formulation enables one to more efficiently arrive at a final formulation for a thermal pad having the desired performance characteristics according to the job at hand.Type: GrantFiled: March 4, 2004Date of Patent: October 10, 2006Assignee: Laird Technologies, Inc.Inventors: Snjezana Jarnjevic, Manford L. Eaton
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Patent number: 7090923Abstract: 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: February 12, 2003Date of Patent: August 15, 2006Assignee: General Electric CorporationInventors: Roy Melvin Griswold, Richard Paul Eckberg, Slawomir Rubinsztajn, Stanislaw Slomkowski, Anna Kowalewska, Stanislaw Sosnowski
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Patent number: 7074849Abstract: The electrical properties, particularly contact resistance and volume resistivity, of materials prepared by curing organosiloxane compositions containing finely divided silver as the electroconductive filler are improved by treating the silver particles with an organosilicon compound prior to incorporating the particles into the organosiloxane composition.Type: GrantFiled: April 13, 2004Date of Patent: July 11, 2006Assignee: Dow Corning CorporationInventors: Kazumi Nakayoshi, Katsutoshi Mine, Rikako Tazawa
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Patent number: 7049375Abstract: An addition curing silicone rubber composition comprising (A) an alkenyl-containing organopolysiloxane, (B) a resinous copolymer composed mainly of R3SiO1/2 units and SiO2 units in a molar ratio between 0.5/1 and 1.5/1 wherein R stands for a monovalent hydrocarbon group and is substantially free of alkenyl groups, (C) a resinous copolymer composed mainly of R?3SiO1/2 units and SiO2 units in a molar ratio between 0.5/1 and 1.5/1 wherein R? stands for a monovalent hydrocarbon group and includes an alkenyl group, and the total content of alkenyl groups is at least 0.0001 mol/g, (D) an organohydrogenpolysiloxane, and (E) an addition reaction catalyst cures into a silicone rubber sheet that has a satisfactory rubber strength and surface adhesive property.Type: GrantFiled: December 11, 2003Date of Patent: May 23, 2006Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Noriyuki Meguriya
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Patent number: 7029754Abstract: A hiding layer-forming silicone composition comprising (A) a diorganopolysiloxane comprising structural units of formula (1) and having an average degree of polymerization of at least 50, wherein R1 is alkyl or aryl, and R2 is alkyl, aryl, alkenyl, alkoxy, alkoxyalkoxy, hydroxyl or epoxy, (B) an organopolysiloxane comprising structural units of formulae (2) and (3): (R1—)n(R2—)3?nSi—O—??(2) wherein R1 and R2 are as defined above, n is an integer of 1 to 3, (C) an inorganic powder opacifier, (D) a curing catalyst, and (E) an organic solvent is effectively curable and capable of forming a hiding layer which temporarily adheres well to various substrates of paper, synthetic paper and plastic film while it remains scratchable.Type: GrantFiled: July 16, 2002Date of Patent: April 18, 2006Assignee: Shin-Etsu Chemical Co.,Ltd.Inventors: Kenji Yamamoto, Katsuma Baba, Masahiko Ogawa
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Patent number: 7019100Abstract: 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: GrantFiled: April 22, 2004Date of Patent: March 28, 2006Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Eiichi Tabei, Mitsuhiro Takarada
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Patent number: 7012110Abstract: Pressure sensitive adhesives and methods, wherein the adhesives include a silicone tackifying resin and a polydiorganosiloxane polyurea copolymer. The tack of these adhesives is improved by the use of a processing aid, such as a plasticizer.Type: GrantFiled: December 18, 2001Date of Patent: March 14, 2006Assignee: 3M Innovative Properties CompanyInventors: Audrey A. Sherman, Kurt C. Melancon, Anthony M. Kremer
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Patent number: 7008697Abstract: When silicone rubber-impregnated and/or coated fabric pieces are mated, with their treated surfaces inside, and joined along a periphery to form a bag, a silicone rubber composition having a tris(trialkoxysilylalkyl) isocyanurate blended as an adhesion promoter is used as a sealer where the peripheral portions of the fabric pieces are joined together whereby an improved bond is established therebetween.Type: GrantFiled: November 13, 2003Date of Patent: March 7, 2006Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takashi Aketa, Hiroyasu Hara
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Patent number: 7005460Abstract: The present invention relates to a multi-component system for making impressions which contains (a) at least one compound having at least two alkenyl groups; (b) at least one organohydrogenpolysiloxane; (c) at least one hydrosilylation catalyst; characterized by containing (d1) at least one polymeric compound having at least one alkynyl group and/or (d2) at least one compound having at least one Si—OR structural unit, wherein R=H, alkyl, alkoxyalkyl or acyl; and when a compound (d2) having at least one Si—OR structural unit is contained, (e) at least one condensation catalyst and/or condensation cross-linking agent. After the mixing of the components, the materials according to the invention cure in two steps.Type: GrantFiled: January 24, 2002Date of Patent: February 28, 2006Assignee: Kettenbach GmbH & Co. KGInventors: Alexander Bublewitz, Jens-Peter Reber, Ulrich Nagel
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Patent number: 7005475Abstract: The present invention relates to curable silicone coating compositions having improved adhesion to polymeric substrates. The present invention also relates to additives that improve adhesion of silicone pressure sensitive adhesive coating compositions to polymeric substrates. Furthermore the present invention relates to the process for making a silicone pressure sensitive adhesive coating with improved adhesion to polymeric substrates.Type: GrantFiled: June 10, 2003Date of Patent: February 28, 2006Assignee: General Electric CompanyInventor: Roy Melvin Griswold
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Patent number: 6969554Abstract: A silicon composition as described below, which is suitable for sealing semiconductors, is provided. The silicone composition comprises (A) a diorganopolysiloxane with at least two alkenyl groups bonded to silicon atoms, (B) an organohydrogenpolysiloxane with at least two hydrogen atoms bonded to silicon atoms, (C) an adhesion imparting constituent, (D) a platinum group metal based catalyst, and (E) a compound represented by a general formula (1): (wherein, R1 represents a monovalent hydrocarbon group of at least 10 carbon atoms, which may contain a hydroxyl group or an ether linkage). The silicon composition displays excellent adhesion to semiconductor chips, and enables the production of a semiconductor device with superior resistance to moisture permeation.Type: GrantFiled: January 28, 2003Date of Patent: November 29, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tsutomu Kashiwagi, Masachika Yoshino
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Patent number: 6956087Abstract: 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.Type: GrantFiled: December 13, 2002Date of Patent: October 18, 2005Assignee: Bausch & Lomb IncorporatedInventors: Yu-Chin Lai, Edmond T. Quinn, Xiaojun Michael Liu, Edmund P. Maziarz, III
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Patent number: 6887949Abstract: 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 di- or multi-alkenyl silicone 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: May 3, 2005Assignee: General Electric CompanyInventors: John Alfred Kilgour, Edwin C. Cua, John A. Cummings
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Patent number: 6878766Abstract: A dip-formed article which is shaped from a dip-formable composition comprising 100 weight parts of a conjugated diene copolymer prepared by copolymerization of 50 to 85 weight % of a conjugated diene monomer with 15 to 40 weight % of an ethylenically unsaturated nitrile monomer, 1 to 4 weight % of an ethylenically unsaturated acid monomer and 0 to 30 weight % of a copolymerizable other ethylenically unsaturated monomer, 2 to 6 weight parts of sulfur and 0 to 0.2 weight parts of zinc oxide. The dip-formed article is characterized as a glove by being well elongated and ease in donning, being not easily broken upon donning, and not wearying a wearer's hand even when it is worn for a long time, and having improved lastingness of the tight conformity to the skin of a wearer's hand.Type: GrantFiled: January 24, 2001Date of Patent: April 12, 2005Assignee: Zeon CorporationInventors: Katsuo Hagiwara, Hisanori Ota, Jun Sotoyama, Toshihiro Sakakibara
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Patent number: 6875534Abstract: A rubber composition comprising (A) a polyisobutylene polymer having an allyl radical at an end, (B) an optional organpolysiloxane, (C) an organohydrogenpolysiloxane having at least two SiH radicals per molecule, and (D) a platinum group metal catalyst forms a seal member on a periphery of one side of a polymer electrolyte fuel-cell separator. Due to improved acid resistance, weather resistance, creep resistance and gas permeability, the seal member remains effective for a long period of time.Type: GrantFiled: June 20, 2002Date of Patent: April 5, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tsutomu Nakamura, Noriyuki Meguriya, Hironao Fujiki