Processes Patents (Class 556/466)
  • Patent number: 10633401
    Abstract: The invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D), A) alkoxysilano(cyclo)alkylamine is reacted with dialkyl carbonate in the presence of a basic catalyst to give alkoxysilano(cyclo)alkylurethane, B) simultaneously or successively, the catalyst is deactivated, and low boilers, solids, salt burdens and/or high boilers are removed, C) alkoxysilano(cyclo)alkylurethane obtained after B) is thermally cleaved to release isocyanate containing alkoxysilane groups and by-product, leaving bottoms material, and D) isocyanate containing alkoxysilane groups and by-product are separated from one another and from bottoms material and collected, wherein the process regime at least of steps C) to D) is continuous.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: April 28, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Manfred Kreczinski, Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe
  • Patent number: 10626131
    Abstract: The invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D), A) alkoxysilano(cyclo)alkylamine is reacted with dialkyl carbonate in the presence of a basic catalyst to give alkoxysilano(cyclo)alkylurethane, B) simultaneously or successively, the catalyst is removed and/or deactivated, and low boilers, solids, salt burdens and/or high boilers are removed, C) alkoxysilano(cyclo)alkylurethane obtained after B) is thermally cleaved to release isocyanate containing alkoxysilane groups and by-product, leaving bottoms material, and D) isocyanate containing alkoxysilane groups and by-product are separated from one another and from bottoms material and collected, wherein the basic catalyst is a guanidine base.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: April 21, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Manfred Kreczinski, Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe
  • Patent number: 10106425
    Abstract: Disclosed are methods of selectively synthesizing inorganic silanes, such as halosilane and dihalosilane, comprising the step of reacting the halide or halogen (i.e., HX or X2 wherein X is Cl, Br, or I) with RSiH3, wherein R is an unsaturated C4 to C8 cyclic hydrocarbon or heterocycle group, provided that a C6 cyclic aromatic includes at least one hydrocarbyl ligand, in the presence of a catalyst, to produce RH and the inorganic silane having the formula SixHaXb, wherein x=1-4; a=1-9; b=1-9; and a+b=2x+2.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: October 23, 2018
    Assignees: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude, Air Liquide Advanced Materials, Inc.
    Inventors: Sean Kerrigan, Zhiwen Wan, Jean-Marc Girard
  • Patent number: 9884879
    Abstract: A method for preparation and polymerization of siloxane monomers of Formula I is presented. The synthesis includes the selective reaction between silanol containing unit and alkoxy containing units in the presence of basic catalyst. The siloxane monomers of the invention can be used for preparation of siloxane polymers with good flexibility and cracking threshold, and functional sites, useful for applications requiring low metal content in semiconductor industry.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: February 6, 2018
    Assignee: Silecs Oy
    Inventor: Jyri Paulasaari
  • Patent number: 9879340
    Abstract: Disclosed herein are containing silicon-based films and compositions and methods for forming the same. The silicon-based films contain <50 atomic % of silicon. In one aspect, the silicon-based films have a composition SixCyNz wherein x is about 0 to about 55, y is about 35 to about 100, and z is about 0 to about 50 atomic weight (wt.) percent (%) as measured by XPS. In another aspect, the silicon-based films were deposited using at least one organosilicon precursor comprising two silicon atoms, at least one Si-Me group, and an ethylene or propylene linkage between the silicon atoms such as 1,4-disilapentane.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: January 30, 2018
    Assignee: VERSUM MATERIALS US, LLC
    Inventors: Xinjian Lei, Anupama Mallikarjunan, Matthew R. MacDonald, Manchao Xiao
  • Patent number: 9556208
    Abstract: This invention is directed to a process for producing a haloorganoalkoxysilane product comprising reacting an olefinic halide, an alkoxysilane, a catalytically effective amount of ruthenium-containing catalyst; and a reaction-promoting effective amount of a peroxy compound, optionally in the presence of an electron-deficient aromatic compound.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: January 31, 2017
    Assignee: Momentive Performance Materials Inc.
    Inventors: Kenrick Martin Lewis, Jitendra Singh Rathore, Andrea Trotto, Giuseppe D'Agostino
  • Patent number: 9403620
    Abstract: A silica container contains a substrate having a rotational symmetry, containing mainly a silica, and gaseous bubbles in a peripheral part of the substrate; a transparent silica glass in an inner peripheral part of the substrate; and an inner layer, formed on an inner surface of the substrate and containing a transparent silica glass; wherein the substrate contains Li, Na, and K in a total concentration of 50 or less ppm by weight; the substrate has a linear light transmittance of 91.8% to 93.2% at a light wavelength of 600 nm; the inner layer contains Li, Na, and K in a total concentration of 100 or less ppb by weight and at least one of Ca, Sr, and Ba in a total concentration of 50 to 2000 ppm by weight; and the inner layer has a linear light transmittance of 91.8% to 93.2% at a light wavelength of 600 nm.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: August 2, 2016
    Assignee: SHIN-ETSU QUARTZ PRODUCTS CO., LTD.
    Inventors: Shigeru Yamagata, Tomomi Usui
  • Patent number: 9355918
    Abstract: The present invention provides technology for realizing higher purification of a polycrystalline silicon. First, trichlorosilane is prepared as a sample (S101) and then the carbon-containing impurities content in the trichlorosilane is analyzed by GC/MS-SIM method (S102). The quality of the trichlorosilane is determined based on the analysis results (S103) and the trichlorosilane determined to be a good material (S103: Yes) is used as the raw material for producing a high-purity polycrystalline silicon by CVD method (104). In case, the trichlorosilane determined to be a bad material (S103: No) is not used as the raw material for producing a polycrystalline silicon. When the impurities analysis by GC/MS-SIM method is performed using, as a separation column, a column having a non-polar column and a medium-polar column connected in series with each other, it is possible to simultaneously perform both of the separation of chlorosilanes and hydrocarbons and the separation of chlorosilanes and methylsilanes.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: May 31, 2016
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Kazunori Funazaki, Kazuomi Sato, Shuichi Miyao
  • Patent number: 9321793
    Abstract: The present invention relates to a method for separating organohalosilanes. The method includes introducing a mixture including at least a first organohalosilane and a second organohalosilane onto a chromatographic bed including a stationary phase. The method also includes passing a liquid mobile phase through the chromatographic bed to produce an eluate including at least one fraction enriched in the first organohalosilane and at least one fraction enriched in the second organohalosilane.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: April 26, 2016
    Assignee: Dow Corning Corporation
    Inventors: Robert Thomas Larsen, Michael W. Toepke
  • Patent number: 9249164
    Abstract: A process for preparing an acryloyloxysilane, the process comprising reacting a metal salt of a carboxylic acid having the formula [CR22?CR1COO?]aMa+ (I), with a haloorganoalkoxysilane having the formula XR3Si(OR4)nR53—n (II) in the presence of mineral spirits and a phase transfer catalyst at a temperature of from 50 to 160° C. to form a mixture comprising an acryloyloxysilane and a metal halide having the formula Ma+X?a (III), wherein R1 is H or C1-C6 hydrocarbyl, each R2 is independently R1 or [COO?]aMa+, Ma+ is an alkali metal cation or alkaline earth metal cation, a is 1 or 2, X is halo, R3 is C1-C6 hydrocarbylene, each R4 is independently C1-C10 Q hydrocarbyl, each R5 is independently R1 and n is an integer from 1 to 3.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: February 2, 2016
    Inventors: Peter Cheshire Hupfield, Xiaobing Zhou
  • Publication number: 20150141688
    Abstract: The present invention relates to a method for separating organohalosilanes. The method includes introducing a mixture including at least a first organohalosilane and a second organohalosilane onto a chromatographic bed including a stationary phase. The method also includes passing a liquid mobile phase through the chromatographic bed to produce an eluate including at least one fraction enriched in the first organohalosilane and at least one fraction enriched in the second organohalosilane.
    Type: Application
    Filed: May 1, 2013
    Publication date: May 21, 2015
    Applicant: Dow Corning Corporation
    Inventors: Robert Thomas Larsen, Michael W. Toepke
  • Publication number: 20150126761
    Abstract: A method for the preparation of treprostinil and its derivatives is described. In contrast to prior art, this method utilizes an easily scalable enzymatic resolution of a key intermediate for making these compounds. Another significant improvement of the described method over prior methods is the regioselective Claisen rearrangement of a 5-allyloxy-benzaldehyde precursor, which is facilitated by a bromo substituent in 2-position.
    Type: Application
    Filed: May 22, 2013
    Publication date: May 7, 2015
    Inventors: Nareshkumar Jain, Michael Kirkup, Michael Marella, Sanjeevani Ghone
  • Patent number: 9000167
    Abstract: The present invention describes chemical systems and methods for silylating aromatic organic substrates, said system comprising a mixture of (a) at least one organosilane and (b) at least one strong base, said system being substantially free of a transition-metal compound, and said methods comprising contacting a quantity of the organic substrate with a mixture of (a) at least one organosilane and (b) at least one strong base, under conditions sufficient to silylate the aromatic substrate; wherein said system is substantially free of a transition-metal compound.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: April 7, 2015
    Assignee: California Institute of Technology
    Inventors: Robert H. Grubbs, Alexey Fedorov, Anton Toutov, Kerry Betz
  • Patent number: 9000103
    Abstract: A composition of matter comprising an interpenetrating polymer network of a combination of a silanol-containing polysiloxane phase and a silylated triglyceride oil phase. The two phases are mixed and covalently bound to each other via siloxane crosslinks. A method for producing interpenetrating polymer networks. The method comprises providing triglycerides from oils or fats and reacting the triglycerides with a reactive silane to form a silylated triglyceride oil. The silylated triglyceride oil and a silanol terminated polysiloxane are emulsified with water in a predetermined ratio. Thereafter, crosslinking agents are added and the water is removed from the emulsions providing siloxane crosslinks between the two intimately mixed immiscible phases.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: April 7, 2015
    Inventors: Ramani Narayan, Daniel Gravier, Sudhanwa Dewasthale, Elodie Halbot
  • Patent number: 8946464
    Abstract: A hydrosilylation method is provided. In this hydrosilylation method, silylation of the carbon atom other than the terminal carbon atom and generation of the by-product isomer by internal migration of the double bond are suppressed without sacrificing the hydrosilylation reactivity, even if an olefin compound having tertiary amine atom which can be a catalyst poison was used. In the hydrosilylation, an olefin compound having carbon-carbon unsaturated bond, and a compound having hydrogensilyl group are reacted in the presence of an acid amide compound, a nitrile compound and an aromatic hydroxyl compound, or an organoamine salt compound, by using catalytic action of platinum and/or its complex compound.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: February 3, 2015
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Kazuhiro Tsuchida
  • Patent number: 8937196
    Abstract: A process for removing an impurity from a siloxane comprising i) flowing a first liquid through a fiber bundle comprising a plurality of fibers extending lengthwise in a conduit, wherein the bundle has an upstream end and a downstream end, and the first liquid flows in a direction from the upstream end of the bundle to the downstream end; and ii) while continuing (i), flowing a second liquid comprising a siloxane and an impurity through the fiber bundle in a direction from the upstream end of the bundle to the downstream end of the bundle to effect transfer of at least a portion of the impurity from the second liquid to the first liquid, wherein the first liquid and the second liquid are substantially immiscible.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: January 20, 2015
    Assignee: Dow Corning Corporation
    Inventors: Robert Fosdick, Stephen Kamin, Hanh Vo, Tylyn Weickert
  • Patent number: 8927753
    Abstract: The present invention relates to a method for preparing di-organo-dialkoxysilanes, in particular di-organo-dialkoxysilanes wherein one or both of the organic substituents are bulky. The method comprises reacting a tetraalkoxysilane compound with a first Grignard reagent to form a mono-organo-tri-alkoxysilane compound, which is then reacted with a chlorinating agent to form a chlorinated mono-organo-di-alkoxysilane which is then reacted with a second Grignard reagent to form the di-organo-di-alkoxysilane compound.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: January 6, 2015
    Assignee: Saudi Basic Industries Corporation
    Inventors: Jaiprakash Brijlal Sainani, Vimalkumar Mahendrabhai Patel, Mahesh Davadra
  • Patent number: 8877059
    Abstract: The invention relates to a method for separating organosilicon compounds from organosilicon wastewater. In the first step, the wastewater is heated to at least 10° C. In the second step, the wastewater is stored for at least 30 minutes at at least 10° C. In the third step, the wastewater is conducted through a phase separation element, in which droplets that are formed and contain organosilicon compounds are separated.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: November 4, 2014
    Assignee: Wacker Chemie AG
    Inventors: Ulrike Buettner, Susanne Kutz, Winfried Mueller
  • Publication number: 20140316018
    Abstract: An object of the present invention is to provide titanium oxide granules that have a novel structure and have a characteristic of highly efficient decomposing capability, and a method of decomposing plastic and organic waste by using the granules. The present invention has been completed based on the finding that a method of decomposing plastic waste by using titanium oxide granules having a transition metal and/or a transition metal oxide, in particular copper, supported thereon enables decomposition of plastic waste at extremely high efficiency in a low-temperature region for a long period of time as compared to methods of decomposing plastic waste by using the related-art titanium oxide granules.
    Type: Application
    Filed: December 14, 2012
    Publication date: October 23, 2014
    Inventors: Hiromitsu Shimizu, Itsushi Kashimoto
  • Patent number: 8865927
    Abstract: A method of preparing a diorganodihalosilane, the method comprising the following separate and consecutive steps: (a) treating a metal catalyst comprising a metal selected from the groups consisting of i) gold, ii) gold and copper, iii) gold, copper and magnesium, iv) copper, rhodium and gold, v) copper, rhodium, and rhenium, vi) rhenium and palladium, vii) copper, and viii) copper and magnesium with a mixture comprising hydrogen gas and an organotrihalosilane at a temperature from 500 to 1400° C. to form a silicon-containing metal intermediate; and (b) reacting the silicon-containing metal intermediate with an organohalide according to the formula RX, wherein R is C1-C10 hydrocarbyl and X is halo, at a temperature from 100 to 600° C. to form a diorganodihalosilane and a depleted silicon-containing metal intermediate.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: October 21, 2014
    Assignee: Dow Corning Corporation
    Inventors: Dimitris Katsoulis, Robert Larsen, Matthew McLaughlin, Wendy Sparschu
  • Publication number: 20140228563
    Abstract: Cis and trans ruthenium complexes that can be used as catalysts for ring opening metathesis polymerisation (ROMP) are described. The complexes are generally square pyramidal in nature, having two anionic ligands X. Corresponding cationic complexes where one or both of the anionic ligands X are replaced by a non-co-ordinating anionic ligand are also described. Polymers such as polydicyclopentadiene (PDCPD) can be prepared using the catalysts.
    Type: Application
    Filed: September 28, 2012
    Publication date: August 14, 2014
    Applicant: University Court of the University of St. Andrews
    Inventor: Catherine Cazin
  • Patent number: 8796484
    Abstract: A polymerizable dimethicone copolyol macromer composition is synthesized by reacting itaconic anhydride with a dimethicone copolyol. During the reaction itaconic anhydride spontaneously isomerizes to citraconic anhydride which in turn is esterified by the dimethicone copolyol. The obtained macromers are copolymerizable with olefinically unsaturated monomers. Polymers containing the macromer repeating units are useful in a variety of applications including personal care, textile and industrial formulations to deliver softness, lubricity, fixative, water repellency, gloss, surface modification, and surfactant properties.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: August 5, 2014
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Aroop K. Roy, Krishnan Tamareselvy
  • Patent number: 8697900
    Abstract: A method of preparing a diorganodihalosilane, the method comprising the following separate and consecutive steps: (i) treating a preformed metal silicide with a mixture comprising hydrogen gas and a silicon tetrahalide at a temperature from 300 to 1400° C. to form a treated metal silicide, wherein the preformed metal silicide comprises a metal selected from at least one of Ni, Pd, or Pt; and (ii) reacting the treated metal silicide with an organohalide according to the formula RX at a temperature from 250 to 700° C. to form a diorganodihalosilane, wherein R is C1-C10 hydrocarbyl and X is halo.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: April 15, 2014
    Assignee: Dow Corning Corporation
    Inventors: Kurt Anderson, Aswini Dash, Charles Hall, Dimitris Katsoulis, Jonathan Wineland
  • Publication number: 20140094607
    Abstract: The present invention describes chemical systems and methods for silylating aromatic organic substrates, said system comprising a mixture of (a) at least one organosilane and (b) at least one strong base, said system being substantially free of a transition-metal compound, and said methods comprising contacting a quantity of the organic substrate with a mixture of (a) at least one organosilane and (b) at least one strong base, under conditions sufficient to silylate the aromatic substrate; wherein said system is substantially free of a transition-metal compound.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 3, 2014
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: ROBERT H. GRUBBS, ALEXEY FEDOROV, ANTON TOUTOV, KERRY BETZ
  • Patent number: 8674129
    Abstract: A method of making a diorganodihalosilane contacting an organotrihalosilane according to the formula RSiX3 (I) with hydrogen in the presence of a metal catalyst comprising at least two metals and at a temperature from 300 to 800° C. to form a diorganodihalosilane, wherein R is C1-C10 Q hydrocarbyl, X is halo, and two of the at least two metals are chosen from at least one of (i) copper and palladium, (ii) copper and gold, (iii) indium and iridium or (iv) iridium and rhenium.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: March 18, 2014
    Assignee: Dow Corning Corporation
    Inventors: Aswini Dash, Charles Hall, Dimitris Katsoulis, Robert Larsen, Matthew McLaughlin, Jonathan Wineland
  • Patent number: 8658816
    Abstract: The present invention relates to precipitated silicic acids, which have a particularly narrow particle size distribution in combination with a special pore size distribution, to a method for the production thereof, and to the use thereof as a filler for rubber mixtures.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: February 25, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Andre Wehmeier, Oleg Stenzel, Weicheng Wu, Christian Goetz, Werner Niedermeier, Marinus Haddeman, Anke Blume
  • Publication number: 20140042099
    Abstract: An oil spill treatment composition including one or more surfactants formulated to reduce the thickness of oil floating the surface of a body of water, a method for use, and method of manufacturing thereof are disclosed herein. Also disclosed herein are oil spill treatment compositions comprising one or more chemical dispersants and one or more crude or refined oils having the same or similar composition as the oil spill to be treated. Methods for use thereof and methods of manufacture thereof are also disclosed.
    Type: Application
    Filed: October 11, 2013
    Publication date: February 13, 2014
    Inventors: Timothy J. Nedwed, Gerard P. Canevari
  • Publication number: 20140024849
    Abstract: The invention relates to a process for dechlorinating alkylsilanes and siloxanes, and also to the use of basic anion exchanger resins for dechlorinating alkyl silanes and alkylsiloxanes.
    Type: Application
    Filed: February 27, 2012
    Publication date: January 23, 2014
    Applicant: Evonik Degussa GmbH
    Inventors: Burkhard Standke, Mustafa Guezelsahin, Manuel Friedel, Joerg Arndt, Klaus Koellisch
  • Publication number: 20130310499
    Abstract: There are provided an exfoliated graphite oxide derivative excellent in dispersibility in a thermoplastic resin, a resin composite material of the exfoliated graphite oxide derivative and a thermoplastic resin, and a process for producing the resin composite material. The exfoliated graphite oxide derivative is obtained by reacting an exfoliated graphite oxide having a C/O ratio as determined by elemental analysis of 8 or less with a compound having a specific structure.
    Type: Application
    Filed: March 13, 2012
    Publication date: November 21, 2013
    Inventors: Keiichi Osano, Katsunori Takahashi
  • Patent number: 8580992
    Abstract: A process for benzylating an alcohol includes mixing 2-benzyloxy-1-methylpyridinium triflate in an aromatic hydrocarbon solvent having a predetermined boiling point; adding an acid scavenger to the mixture; combining the alcohol to be benzylated with the mixture; reacting the alcohol with the 2-benzyloxy-1-methylpyridinium triflate by heating above ambient temperature to generate the benzylated alcohol; and separating the benzylated alcohol from the mixture.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: November 12, 2013
    Assignee: The Florida State University Research Foundation, Inc.
    Inventor: Gregory Dudley
  • Patent number: 8563762
    Abstract: This disclosure concerns a metal oxide surface treatment with a fluoroalkyl silanizing agent.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: October 22, 2013
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Arthur W Snow, Edward E Foos
  • Publication number: 20130261279
    Abstract: A method of making a diorganodihalosilane contacting an organotrihalosilane according to the formula RSiX3 (I) with hydrogen in the presence of a metal catalyst comprising at least two metals and at a temperature from 300 to 800° C. to form a diorganodihalosilane, wherein R is C1-C10 Q hydrocarbyl, X is halo, and two of the at least two metals are chosen from at least one of (i) copper and palladium, (ii) copper and gold, (iii) indium and iridium or (iv) iridium and rhenium.
    Type: Application
    Filed: December 1, 2011
    Publication date: October 3, 2013
    Applicant: DOW CORNING CORPORATION
    Inventors: Aswini Dash, Charles Hall, Dimitris Katsoulis, Robert Larsen, Matthew McLaughlin, Jonathan Wineland
  • Patent number: 8524363
    Abstract: Organosilicone fine particles which are capable of responding to the highly advanced requirements of recent years imposed on them for purposes of actual use, including further improvement in optical characteristics such as total light transmittance and haze as well as heat-resistant colorability related to resin compositions, further improvement in usability (extensions and expansions at the time of use) and feeling (stickiness, roughness and durability) related to cosmetic materials and further improvement in matte effect and factual sense related to paint compositions, as well as methods of their production and cosmetic materials, resin compositions and paint compositions containing such particles are provided. Organosilicone fine particles have tetrahedral general shapes with surfaces each having a concave part with an approximately circular opening. The maximum external diameters L of the organosilicone fine particles have an average value in the range of 0.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: September 3, 2013
    Assignee: Takemoto Yushi Kabushiki Kaisha
    Inventors: Chiaki Saito, Motoki Maeda, Eriko Hatta
  • Publication number: 20130225848
    Abstract: A process for removing an impurity from a siloxane comprising i) flowing a first liquid through a fiber bundle comprising a plurality of fibers extending lengthwise in a conduit, wherein the bundle has an upstream end and a downstream end, and the first liquid flows in a direction from the upstream end of the bundle to the downstream end; and ii) while continuing (i), flowing a second liquid comprising a siloxane and an impurity through the fiber bundle in a direction from the upstream end of the bundle to the downstream end of the bundle to effect transfer of at least a portion of the impurity from the second liquid to the first liquid, wherein the first liquid and the second liquid are substantially immiscible.
    Type: Application
    Filed: November 14, 2011
    Publication date: August 29, 2013
    Applicant: Dow Corning Corporation
    Inventors: Robert Fosdick, Stephen Kamin, Hanh Vo, Tylyn Weickert
  • Patent number: 8513449
    Abstract: The present invention provides a process for using nanosized copper, nanosized copper oxides, nanosized copper chlorides, other nanosized copper salts, and mixtures thereof, as sources of catalytic copper in the Direct Synthesis of trialkoxysilanes of the formula HSi(OR)3 wherein R is an alkyl group containing from 1 to 6 carbon atoms inclusive. The nanosized copper, nanosized copper oxides, nanosized copper chlorides, other nanosized copper salts, and their mixtures of this invention have average particle sizes that are in the range from about 0.1 to about 60 nanometers, preferably from about 0.1 to about 30 nanometers, and most preferably from about 0.1 to about 15 nanometers. Nanosized sources of catalytic copper afford high dispersion of catalytic sites on silicon and contribute to high reaction rates, high selectivity and high silicon conversion. The nanosized copper catalyst precursors of the invention permit the use of substantially reduced levels of copper compared to conventional practice.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: August 20, 2013
    Assignee: Momentive Performance Materials, Inc.
    Inventors: Sabrina R. Cromer, Regina Nelson Eng, Kenrick M. Lewis, Abellard T. Mereigh, Chi-Lin O'Young, Hua Yu
  • Patent number: 8513450
    Abstract: The invention provides a process for preparing polysilanes of the general formula (1) SinR2n+2 (1), in which silane of the general formula (2) R1mSiH4-m (1a) is converted in the presence of boron compounds of the general formula (3) R23B (3), where R1 is a hydrocarbyl radical having 1 to 18 carbon atoms, R is hydrogen or an R1 radical, R2 is fluorine, chlorine, bromine or a hydrocarbyl radical which has 1 to 18 carbon atoms and may bear substituents selected from fluorine, chlorine, bromine, iodine and NO2, n has integer values from 2 to 100,000, and m is 0, 1 or 2.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: August 20, 2013
    Assignee: Wacker Chemie AG
    Inventors: Andreas Bockholt, Andreas Feigl, Bernhard Rieger
  • Publication number: 20130203675
    Abstract: Asymmetric bifunctional silyl (ABS) monomers comprising covalently linked pharmaceutical, chemical and biological agents are described. These agents can also be covalently bound via the silyl group to delivery vehicles for delivering the agents to desired targets or areas. Also described are delivery vehicles which contain ABS monomers comprising covalently linked agents and to vehicles that are covalently linked to the ABS monomers. The silyl modifications described herein can modify properties of the agents and vehicles, thereby providing desired solubility, stability, hydrophobicity and targeting.
    Type: Application
    Filed: September 15, 2011
    Publication date: August 8, 2013
    Inventors: Joseph M. DeSimone, Matthew Finniss, Mary Napier, Ashish Pandya, Matthew Parrott
  • Patent number: 8481776
    Abstract: The present invention relates to a functional substance-releasing agent containing a silicic acid ester compound represented by formula (1) below, a process for producing the functional substance-releasing agent, and a composition containing the functional substance-releasing agent. wherein R1 represents a residue of an alcohol which results from removal of one hydroxyl group therefrom, the alcohol being selected from a functional alcohol having a log P value of 2.0 or less and an alcohol having a log P value of 2.1 or more, a plurality of R1s may be the same or different, provided that the silicic acid ester compound has, in one molecule, at least one residue resulting from removal of one hydroxyl group from a functional alcohol having a log P value of 2.0 or less and at least one residue resulting from removal of one hydroxyl group from an alcohol having a log P value of 2.1 or more.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: July 9, 2013
    Assignee: Kao Corporation
    Inventors: Hideyuki Abe, Akiyoshi Kimura, Makiko Shigehisa
  • Patent number: 8476468
    Abstract: The invention relates to a process for treating a composition containing silicon compounds, especially organosilanes and/or inorganic silanes, and at least one extraneous metal and/or a compound containing extraneous metal, wherein the composition is contacted with at least one adsorbent and/or a first filter and then a composition in which the content of the extraneous metal and/or of the compound containing extraneous metal has been reduced is obtained. The invention further relates to the use of organic resins, activated carbon, silicates and/or zeolites and/or else of at least one filter with small pore sizes to reduce the level of the compounds mentioned.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: July 2, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Hartwig Rauleder, Ekkehard Mueh
  • Patent number: 8461369
    Abstract: Organomonoalkoxy/monohydroxy silanes, particularly halogenated or aklenylated organomonoalkoxy (or monohydroxy) silanes, which are useful intermediates in organic syntheses, are prepared by reacting an alkoxysilane with an organometallic compound suited for substituting at least certain of the alkoxy functions of the alkoxysilane with a monovalent hydrocarbon radical other than alkoxy and co-preparing a metallic alkoxylate by-product capable of denaturing the substituted silanes thus obtained, including contacting the metallic alkoxylate with at least one agent (A) reactive with the alkoxy functions of the alkoxylate to generate one or more species inert relative to the alkoxysilane, such agent (A) being selected from among the electrophile and/or mineral acid groups.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: June 11, 2013
    Assignee: Rhodia Operations
    Inventor: Thierry Vidal
  • Patent number: 8450515
    Abstract: The present invention relates to a preparation method for a linear or cyclic trisilaalkane which is a substance useful in the preparation of polycarbosilane and silicon carbide precursors. Linear or cyclic trisilaalkane and organic trichlorosilane derivatives can be synthesized simultaneously and in high yield by reacting bis(chlorosily)methane having a Si—H bond, either alone or together with an organic chloride, using a quaternary organic phosphonium salt compound as a catalyst. Further, since the catalyst can be recovered after use, the present invention is very economical and is thus effective for mass-producing precursors for organic/inorganic hybrid substances.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: May 28, 2013
    Assignee: Samsung Fine Chemicals Co., Ltd
    Inventor: Il Nam Jung
  • Publication number: 20130096335
    Abstract: The invention provides a method of preparing silane dipeptide analogs, comprising the steps of treating a solution of a substituted 1,2-oxasilolane with lithium metal to form a solution of the dilithium salt of a substituted 3-hydroxypropylsilanol, and reacting the solution of the dilithium salt of the substituted 3-hydroxypropylsilanol with a substituted enamine.
    Type: Application
    Filed: May 20, 2011
    Publication date: April 18, 2013
    Applicant: Temple University - Of The Commonwealth System of Higher Education
    Inventors: Scott McNeill Sieburth, Yingjian Bo
  • Patent number: 8420843
    Abstract: The compound is a silane surface treatment agent and is useful for modifying the surfaces of silicon oxide and other metal oxides with hexafluorodimethyl carbinol functional groups. Additionally provided is a surface treatment procedure that effectively bonds it and other alkoxysilanes via homogeneous and heterogeneous amine catalysis onto metal oxide surfaces.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: April 16, 2013
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Arthur W Snow, Edward E Foos
  • Patent number: 8394977
    Abstract: A method for the preparation of functionalized particles includes providing a feedstock that includes particles, a surface treatment agent reactive with the particles and solvent. The feedstock is direct through a continuous hydrothermal reactor maintained at a temperature sufficient to react the particles with the surface treatment agents to thereby provide functionalized particles. The method of the invention is capable of providing the functionalized particles in less than about 4 hours.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: March 12, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Grant F. Tiefenbruck, Matthew N. Archibald, James M. Nelson, Wendy L. Thompson, William J. Schultz, Peter D. Condo, Brant U. Kolb, Jimmie R. Baran, Jr.
  • Patent number: 8388914
    Abstract: Methods and systems for producing silane that use electrolysis to regenerate reactive components therein are disclosed. The methods and systems may be substantially closed-loop with respect to halogen, an alkali or alkaline earth metal and/or hydrogen.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: March 5, 2013
    Assignee: MEMC Electronic Materials, Inc.
    Inventors: Puneet Gupta, Henry Erk, Alexis Grabbe
  • Patent number: 8354002
    Abstract: Mixtures containing high boiling and low boiling components, at least one component being dissociatable into ions, are separated effectively by heating by passing an alternating electrical current through the mixture. The process is particularly effective in the workup of crude alkylchlorosilanes from the direct synthesis.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: January 15, 2013
    Assignee: Wacker Chemie AG
    Inventors: Paul Fuchs, Norbert Ellinger, Klaus Kaeppler, Gerhard Staiger
  • Patent number: 8354554
    Abstract: Disclosed are a process for preparing organometalloids functionalized with an unsymmetrical 1,1-disubstituted alkene, and compounds prepared therewith.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: January 15, 2013
    Assignee: The Chinese University of HongKong
    Inventor: Chun Yu Ho
  • Patent number: 8344036
    Abstract: A method of processing polymer materials, highly filled or otherwise to recover cyclic structures or monomers. The method involves providing a vessel having a heated side wall, an agitator, and at least one of an additional heated structure, other than the heated side wall, within the vessel and means for forming a thin coat of material processed in the vessel on said heated side wall. A polymer material is fed into the vessel and heated to a sufficient temperature to cause depolymerization of the polymer material into cyclic structures or monomers. The cyclic structures or monomers are removed from the vessel and collected. The method does not require the use of a solvent.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: January 1, 2013
    Assignee: Heritage Environmental Services, LLC
    Inventors: Perry Eyster, James Bratina, Thomas Roberts, Christian Peregrine
  • Patent number: 8338630
    Abstract: An amino acid-modified organopolysiloxane is provided. It has an amino acid derivative bonded to at least one silicon atom of the organopolysiloxane segment constituting the backbone of the organopolysiloxane via an amide bond represented by the following general formula (1): wherein X and Y are independently a C1-10 divalent hydrocarbon group; m is an integer of 0 to 4; Ra is hydrogen atom, a monovalent hydrocarbon group containing 1 to 4 carbon atoms, or an organic group represented by the following general formula (2): (wherein Rb is hydrogen atom, a C1-7 monovalent hydrocarbon group, an alkaline metal, or an alkaline earth metal, and Rc is independently hydrogen atom, hydroxy group, or a C1-10 monovalent hydrocarbon group optionally containing oxygen atom, sulfur atom, or nitrogen atom); and Z is an organic group represented by the general formula (2).
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: December 25, 2012
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Hiroyuki Moriya
  • Patent number: 8329933
    Abstract: The present invention provides an organosilicon composition comprising diethoxymethylsilane, a concentration of dissolved residual chloride, and a concentration of dissolved residual chloride scavenger that does not yield unwanted chloride salt precipitate when combined with another composition comprising diethoxymethylsilane.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: December 11, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Steven Gerard Mayorga, Mark Leonard O'Neill, Kelly Ann Chandler