Material Is A Nitrogen-containing Compound Patents (Class 528/21)
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Patent number: 6235861Abstract: An addition-curing organopolysiloxane composition which has excellent shelf stability around room temperature, rapidly cures by moderate ultraviolet irradiation or heating, and is suitable for use as the one solution type. A reaction inhibitor is added to the composition comprising an alkenylated organopolysiloxane, an organohydrogenpolysiloxane, and a platinum catalyst. The inhibitor is a thiophene compound, an isocyanide compound, a cyclic thioether compound, a cyclic azo ether compound, an imino compound, or a polymer which has, in the molecule, functional groups each containing one or more sulfur, nitrogen, or phosphorus atoms and has an average molecular weight of 1,000 to 200,000, and which is capable of forming a complex with a platinum atom.Type: GrantFiled: June 16, 1999Date of Patent: May 22, 2001Assignee: Three BondInventor: Katsuhiko Kishi
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Patent number: 6232425Abstract: A process for making organosilyl end-stopped diorganopolysiloxane fluid is provided comprising the steps of reacting an organic end-stopping compound with a fluorosilicone trimer in the presence of a catalytic amount of linear phosphonitrilic acid, and inactivating the linear phosphonitrilic acid, thereby forming organosilyl end-stopped diorganopolysiloxane fluid.Type: GrantFiled: December 31, 1998Date of Patent: May 15, 2001Assignee: General Electric CompanyInventors: John S. Razzano, Nancy E. Gosh
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Patent number: 6221993Abstract: A continuous process for producing a silicone polymer comprises the sequential steps of (i) polymerisation of a linear silanol group containing siloxane by condensation polymerisation, or of a cyclosiloxane by ring opening polymerisation, or of a mixture of said linear and cyclosiloxanes with a phosphazene base in the presence of water and the presence or absence of a filler in an extruder, (ii) neutralising the reaction mixture in an extruder, and (iii) stripping the neutralised reaction mixture to remove volatile materials. Preferably, step (iii) is performed in an extruder, more preferably steps (i), (ii) and (iii) are all performed in the same extruder.Type: GrantFiled: August 26, 1999Date of Patent: April 24, 2001Assignee: Dow Corning LimitedInventors: John Currie, Phillip Griffith, William Herron, Richard Taylor
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Patent number: 6221944Abstract: The product of reacting an organosilane optionally having a nonhydrolizable organic group, but having one ore more hydrolyzable groups, with a polyol containing at least three hydroxy groups, where any two of the hydroxy groups are separated by at least three intervening atoms. Water-stabilized organosilane compounds. A water stable composition made from the product or compound and water. A method of treating a substrate by contacting the substrate with the product, compound, or composition for a period of time sufficient for treatment of the substrate. A treated substrate having adhered thereto the product, compound, or composition.Type: GrantFiled: May 27, 1999Date of Patent: April 24, 2001Assignee: Emory UniversityInventors: Lanny S. Liebeskind, Gary D. Allred
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Patent number: 6218495Abstract: A three-stage process for the continuous preparation of RTV-1 compositions comprises, in a first step, preparing a raw mixture of &agr;,&ohgr;-dihydroxypolydiorganosiloxane, filler and, if desired, further constituents, in a second step, freeing the raw mixture of gas inclusions under reduced pressure and, if desired, mixing it with further constituents and, in a third step, mixing the degassed raw mixture with a crosslinker, a condensation catalyst and, if desired, additional constituents not yet added in the first and second steps.Type: GrantFiled: February 24, 1999Date of Patent: April 17, 2001Assignee: Wacker-Chemie GmbHInventors: Rudolf Braun, Helmut Wöhrl, Werner Trajer, Johann Steiner, Thomas Felber
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Patent number: 6218445Abstract: The invention concerns a composition cross-linkable under radiation. The composition includes at least one polyorganosiloxane with cross-linkable functional groups, a stabilizing amino agent, and an initiator system for hardening under radiation. The composition is stable for use and storage.Type: GrantFiled: January 10, 2000Date of Patent: April 17, 2001Assignee: Rhodia ChimieInventors: Christian Priou, Andre Soldat, Stuart R. Kerr, III, Reeshemah Beaty
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Patent number: 6218497Abstract: An organohydridosiloxane polymer having a cage conformation, between approximately 0.1 to 40 mole percent carbon-containing substituent, and a dielectric constant of less than about 3.0 is disclosed. Each silicon atom of the cage polymer is bonded to at least three oxygen atoms and to either a hydrogen atom or an organic substituent. By providing such a caged structure having essentially no hydroxyl or alkoxy substituents, either on the polymer backbone or at terminal silicon atoms, essentially no chain lengthening polymerization can occur in solution. Such organohydridosiloxane resins having a molecular weight in the range from about 400 to about 200,000 atomic mass units were formed using a dual phase solvent system and either a solid phase or a phase transfer catalyst to assist the condensation of hydridotrihalosilane with at least one organotrihalosilane.Type: GrantFiled: March 20, 1998Date of Patent: April 17, 2001Assignee: AlliedSignal Inc.Inventors: Nigel P. Hacker, Scott Lefferts, Lisa Figge
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Patent number: 6214962Abstract: An organopolysiloxane gum is continuously prepared by (I) mixing at least one cyclopolysiloxane with an end capping agent, (II) feeding the mixture to a self-cleaning reactor along with a polymerization catalyst of thermal decomposition type, and effecting polymerization at a temperature of 80-130° C., (III) heating the reaction mixture of step (II) at a temperature of 130-200° C. under subatmospheric pressure for deactivating the catalyst, thereby terminating the polymerization reaction, and (IV) continuously removing the cyclopolysiloxane and volatile components from the reaction product.Type: GrantFiled: December 2, 1999Date of Patent: April 10, 2001Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaharu Takahashi, Yutaka Hagiwara, Minoru Igarashi, Keiji Shibata, Kenji Tawara, Yoshio Tomizawa
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Patent number: 6214961Abstract: A method of producing a branched silicone oil which comprises mixing 100 parts by weight of an organopolysiloxane represented by the following formula (I) and/or an organopolysiloxane represented by the following formula (II) with 0.1 to 100 parts by weight of an organopolysiloxane represented by the following formula (III) and causing these oranopolysiloxanes to undergo condensation and equilibration reactions by heating them in the presence of basic catalysts: wherein R1 and R2 are each a monovalent hydrocarbon group containing 1 to 20 carbon atoms, m is an integer from 3 to 7, and n is an integer of 0 or above; wherein R3 is a monovalent hydrocarbon group containing 1 to 20 carbon atoms, p is a number from 1 to 100, and q is a number from 0 to 100.Type: GrantFiled: November 27, 1998Date of Patent: April 10, 2001Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Yoshitaka Aoki
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Patent number: 6201093Abstract: Water-soluble, i.e. easily dispersible, amino-functional polyorganosiloxanes obtained by radical polymerization of vinyl compounds containing amino or ammonium groups onto polyorganosiloxanes which contain at least one mercapto group. They are suitable as textile finishing aids, surfactants and emulsifiers.Type: GrantFiled: January 20, 1999Date of Patent: March 13, 2001Assignee: Huels AktiengesellschaftInventors: Michael Messner, Holger Rautschek
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Patent number: 6166163Abstract: A process for producing an organosilicon resin is disclosed. The process includes the steps of equilibrating a mixture of silane compounds of Si(OR.sup.3).sub.4 wherein R.sup.3 's are a monovalent hydrocarbon group having 1 to 6 carbon atoms; R.sup.2 Si(OR.sup.4).sub.3 wherein R.sup.2 is a monovalent hydrocarbon group having 1 to 20 carbon atoms, and R.sup.4 's are a monovalent hydrocarbon group having 1 to 6 carbon atoms; and R.sup.1.sub.3 SiX wherein X is an --OH group, an --OSiR.sup.1.sub.3 group or a hydrolyzable group, and R.sup.1 's are a monovalent hydrocarbon group having 1 to 6 carbon atoms; adding water to the product of the equilibration reaction to carry out hydrolysis reaction; and adding an aqueous alkali to the product of the hydrolysis reaction to carry out condensation reaction. The organosilicon resin obtained is well dispersible in a resin premix containing a polyol, a blowing agent, a catalyst and a foam stabilizer, and also is highly hydrophobic and low reactive.Type: GrantFiled: June 13, 2000Date of Patent: December 26, 2000Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Muneo Kudo, Shinichi Morioka, Mitsuo Asai
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Patent number: 6143855Abstract: An organohydridosiloxane polymer having a cage conformation, at least approximately 40 Mole percent carbon containing substituents and a dielectric constant of less than about 2.7 is presented. Each silicon atom of the cage polymer is bonded to at least three oxygen atoms and to either a hydrogen atom or an organic substituent. By providing such a caged structure with essentially no hydroxyl or alkoxy substituents, either on the polymer backbone or at terminal silicon atoms, essentially no chain lengthening polymerization can occur in solution. Such organohydridosiloxane resins having a molecular weight in the range from about 400 to about 200,000 atomic mass units were formed using a dual phase solvent system and either a solid phase or phase transfer catalyst to assist the condensation of hydridotrihalosilane with at least one organotrihalosilane.Type: GrantFiled: March 20, 1998Date of Patent: November 7, 2000Assignee: AlliedSignal Inc.Inventors: Nigel P. Hacker, Scott Lefferts, Lisa Figge
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Patent number: 6140449Abstract: A crosslinkable silicon polymer composition is provided comprising (A) a silicon polymer containing Si--Si bonds and Si--H groups and having a Mn of 500-500,000, (B) a polyfunctional aromatic carboxylic acid allyl ester, and (C) an organic peroxide or azo compound. The composition cures into a crosslinked polysilane film which is solvent insoluble, tough, and abrasion resistant.Type: GrantFiled: January 26, 1999Date of Patent: October 31, 2000Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Shigeru Mori, Eiichi Tabei
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Patent number: 6140448Abstract: A polysilane is produced by subjecting a trihydrosilane to hydrogenative condensation in the presence of a titanium or zirconim complex catalyst having a first group selected from a dialkylaminoalkylcyclopentadienyl group, an .alpha.-[(dialkylamino)alkyl]indenyl group and a .beta.-[(dialkylamino)alkyl]indenyl group and a second group selected from a cyclopentadienyl group and a pentamethylcyclopentadienyl group. The above dialkylaminoalkyl group may be replaced by a branched alkyl group. The zirconium complexes are novel compounds.Type: GrantFiled: October 1, 1999Date of Patent: October 31, 2000Assignee: Director-General of Agency of Industrial Science and TechnologyInventors: Nami Choi, Shun-ya Onozawa, Toshiyasu Sakakura, Masato Tanaka
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Patent number: 6140444Abstract: The invention relates to a catalyst system for reacting a silanol group with an alkoxysilane containing a polymerizable ethylenically unsaturated group. The catalyst system includes an organo-lithium reagent and a hydroxylamine. The catalyst system, permits reaction of the silanol group with alkoxysilanes containing rapidly polymerizable ethylenically unsaturated groups, such as an acryloxyalkyl group, for instance an acryloxypropyl group.Type: GrantFiled: January 19, 1999Date of Patent: October 31, 2000Assignee: Loctite CorporationInventors: Michael P. Levandoski, Hsien-Kun Chu
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Patent number: 6136996Abstract: A mixture of a short chain linear phosphazene having the formula:X.sub.3-p (HO).sub.p P(NPX2).sub.m NP(O)X.sub.2,where X is a halogen selected from the group consisting of F, Cl, Br, and I, and m is an integer ranging from 0 to 6 and p is 0 or 1; anda linear sifoxane having a viscosity ranging from 1 to 5,000 centistokes is a catalyst for the polymerization, condensation, or redistribution of siloxanes; the process of making the catalyst and the process of using the catalyst.Type: GrantFiled: December 13, 1995Date of Patent: October 24, 2000Assignee: General Electric CompanyInventors: Slawomir Rubinsztajn, Patricia P. Anderson, Dennis P. Thompson
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Patent number: 6127565Abstract: The following class of glycidyl and allyl ethers are found to cure at room temperature much faster than their glycidyl and allyl analogs: ##STR1## where: R.sub.1 is selected from the group consisting of:(a) an aliphatic hydrocarbon group containing 2 to 10 carbon atoms; and(b) a group having the formula ##STR2## wherein n=1 to 3,m=0 to 5R.sub.2 and R.sub.2 ' are each selected from the group consisting of an alkyl group containing 1 to 4 carbon atoms, an unsubstituted aryl group, and a substituted aryl group, and R.sub.Type: GrantFiled: December 4, 1998Date of Patent: October 3, 2000Assignee: Raytheon CompanyInventor: T. Kirk Dougherty
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Patent number: 6121404Abstract: A method of making .beta.-diketo functional silanes and siloxanes in which the acetoacetic ester moiety, i.e., .beta.-diketo CH.sub.3 COCH.sub.2 CO--, is attached to the oxygen or nitrogen atoms of C--OH or C--NH.sub.2 containing functional silanes or siloxanes, by reacting the organosilicon nucleophile with diketene, as illustrated below for the C--OH containing functional silane. ##STR1## The products can be formed into curable compositions, or used as additives in durable textile treatments, polyurethane foams, and hair care applications.Type: GrantFiled: July 6, 1998Date of Patent: September 19, 2000Assignee: Dow Corning CorporationInventor: Donald Taylor Liles
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Patent number: 6113815Abstract: The composition formed by mixing an organosilane with an ether. Water-stabilized organosilane compounds. A water stable composition made from the ether and organosilane composition and water. A method of treating a substrate by mixing or contacting the substrate with the product, compound, or composition of this invention for a period of time sufficient for treatment of the substrate. A treated substrate having adhered thereto the product, compound, or composition of this invention. A method of dyeing and treating a substrate. A method of antimicrobially treating a food article. A method of antimicrobially coating a fluid container. A method of antimicrobially coating a latex medical article.Type: GrantFiled: July 16, 1998Date of Patent: September 5, 2000Assignee: Bioshield Technologies, Inc.Inventors: Jacques E. Elfersy, Joachim Berkner, Timothy C. Moses
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Patent number: 6114444Abstract: Coating compositions are described comprising:(A) a polyurea reaction product of a mixture comprising:(1) a polyisocyanate, and(2) ammonia, ammonium hydroxide, an aliphatic or cycloaliphatic primary amine, a hydrazide, aziridine, or water, and(B) a compound having a plurality of functional groups that are reactive with urea groups on said polyurea.Type: GrantFiled: August 8, 1994Date of Patent: September 5, 2000Assignee: BASF CorporationInventors: John W. Rehfuss, Walter H. Ohrbom, Robert J. Taylor
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Method of rendering substrates water repellent using hyperbranched polymers containing silicon atoms
Patent number: 6103848Abstract: Substrates are rendered water repellent by applying to the substrate a hyperbranched polymer containing a silicon atom made by polymerizing a derivatized aminofunctional organosilicon monomer which is the reaction product of an amine functional silane monomer precursor or an amine functional polysiloxane monomer precursor and a derivative of carbonic acid or a cyclic lactone.Type: GrantFiled: June 17, 1999Date of Patent: August 15, 2000Assignee: Dow Corning CorporationInventors: Gary Thomas Decker, Daniel Graiver, Arthur James Tselepis, Dwight Edward Williams -
Patent number: 6103847Abstract: This invention discloses hydrophilic additives in polysiloxane gels, elastomers and coatings, and novel processes for producing them. The process comprises:(a) redistributing into polysiloxane-polyether copolymers an unsaturated silane or siloxane,(b) adding to the mixture of reagents a catalytically effective amount of a basic catalyst; and(c) heating the reaction mixture to effect reaction.Novel siloxane structures of unsaturated aliphatic modified polyerther siloxane copolymers are also taught.Type: GrantFiled: May 21, 1998Date of Patent: August 15, 2000Assignee: Witco CorporationInventors: Kenrick M. Lewis, Hua Yu
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Patent number: 6075110Abstract: A stain-proofing agent comprising a compound represented by the formula (1): ##STR1## and non-aqueous composition for paints comprising the stain-proofing agent, resin, curing agent and/or curing catalyst and being capable of forming a coating film remarkably excellent in stain-proofing property.Type: GrantFiled: August 18, 1997Date of Patent: June 13, 2000Assignee: Daikin Industries, Ltd.Inventors: Haruhiko Mohri, Susumu Wada, Akira Chida, Masaru Nagato, Keiko Kunimasa, Yoshiki Shimizu
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Patent number: 6063887Abstract: A 1-acyloxy-organotetrasiloxane represented by the general formula: ##STR1## wherein R.sup.1 is a monovalent organic group containing an acryloyloxy group or a monovalent organic group containing a methacryloyloxy group, and R.sup.2 is a monovalent hydrocarbon group, and a process for producing the above mentioned 1-acyloxy-organotetrasiloxane, which is characterized by subjecting hexamethylcyclotrisiloxane to a ring-opening reaction with an acyloxysilane represented by the general formula: ##STR2## wherein R.sup.1 is a monovalent organic group containing an acryloyloxy group or a monovalent organic group containing a methacryloyloxy group, and R.sup.2 is a monovalent hydrocarbon group, in the presence of an acidic catalyst.Type: GrantFiled: May 18, 1998Date of Patent: May 16, 2000Assignee: Dow Corning Toray Silicone Co., Ltd.Inventor: Tadashi Okawa
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Patent number: 6057042Abstract: An organopolysiloxane composition for surface treatment comprising (A) a reaction product of (1) a silane and/or a siloxane each having a substituted or unsubstituted amino group bonded to the silicon atom via at least one carbon atom and also having an alkoxy group bonded to the silicon atom and (2) a silane and/or a siloxane each having a monovalent hydrocarbon group bonded to the silicon atom, the hydrocarbon group being substituted with an epoxy-containing group, and an alkoxy group bonded to the silicon atom and (B) a specific organopolysiloxane containing an amino group. The composition provides a non-sticky, water-repellent and slippery film on a substrate, especially an EPDM rubber sheet and EPDM molded sponge, with markedly improved adhesion.Type: GrantFiled: July 16, 1998Date of Patent: May 2, 2000Assignee: Toshiba Silicone Co., Ltd.Inventor: Hiroyoshi Shimotsu
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Patent number: 6046283Abstract: Novel rubber-modified rigid silicone resins are disclosed. The novel resins are the copolymerized reaction product of (A) an organosilicon composition selected from the group consisting (I) an organosilicone resin, (II) hydrolyzable precursors of (I), and an hydrolyzate of (II), (B1) a first silicone rubber having a nonfunctional linear chain length between functional groups from 6 to 100 and (B2) a second silicone ruberr having terminal functional groups and a degree of polymerization from about 200 to 1,000. The novel rubber-modified rigid silicone resins of the invention show remarkably high fracture toughness, K.sub.Ic, and critical strain energy release rate G.sub.Ic.Type: GrantFiled: April 28, 1998Date of Patent: April 4, 2000Assignees: Massachusetts Institute of Technology, Dow Corning CorporationInventors: Dimitris Elias Katsoulis, John Robert Keryk, Frederick Jerome McGarry, Bizhong Zhu
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Patent number: 6043330Abstract: Novel processes for preparing hydridosiloxane and organohydridosiloxane resins are disclosed. The processes of the invention broadly provide for the steps of contacting a silane monomer with a phase transfer catalyst in the presence of a reaction mixture that includes a nonpolar, e.g., hydrocarbon, solvent, and a polar solvent, e.g., alcohol and water. The process is conducted under conditions effective to catalytically convert said silane monomer into hydridosiloxane and organohydridosiloxane resins. Recovery of the products is advantageously aided by the ease of separating the phase transfer catalyst from the dual phase reaction mixture by separating the immiscible polar solvent carrying the catalyst from the nonpolar solvent that carries the product. Hydridosiloxane and organohydridosiloxane resins produced by the processes of the invention are also provided.Type: GrantFiled: April 6, 1998Date of Patent: March 28, 2000Assignee: AlliedSignal Inc.Inventors: Nigel P. Hacker, Lisa K. Figge, Scott Lefferts
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Patent number: 6040412Abstract: This specification describes and claims a process for preparing chain-extended organopolysiloxanes. The process comprises the steps of: A) mixing organopolysiloxanes having at least one silicon-bonded hydroxyl group per molecule with a polymerization catalyst to form a mixture, B) allowing the mixture of step A to react so as to produce a reaction product comprising polymerized organopolysiloxanes of which some have at least one silicon-bonded hydroxyl group per molecule and C) allowing the silicon-bonded hydroxyl group containing organopolysiloxanes of the reaction product of step B to react with a nitrogen-containing silylating agent capable of chain-extending to produce a chain-extended organopolysiloxane. Preferably the silylating agent is a cyclosilazane. Organopolysiloxanes having terminal groups other than silicon-containing hydroxyl groups and which are capable of equilibrating with the mixture of step A and/or the reaction product of step B may also be introduced prior to step C.Type: GrantFiled: October 14, 1998Date of Patent: March 21, 2000Assignee: Dow Corning S.A.Inventors: Eric Damme, Jean-Marc Gilson, Patrick Leempoel, Fabrice Lebecq, Takao Takemasa
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Patent number: 6031060Abstract: Terminally functionalized silicone polymers prepared using protected functionalized initiators and processes for preparing the same. The silicone polymers includes protected, functionalized silicone polymers, such as mono-functional, homotelechelic, heterotelechelic, macromonomer, and radial polymers. The protected functionalized polymers can be optionally deprotected to afford functionalized silicone polymers.Type: GrantFiled: May 20, 1998Date of Patent: February 29, 2000Assignee: FMC CorporationInventors: Robert James Letchford, James Anthony Schwindeman, Roderic Paul Quirk
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Patent number: 6020450Abstract: A room temperature curable fluoropolymer composition is provided which comprises (A) a straight chain fluoropolymer compound containing, in its backbone chain, at least one structure selected from a perfluoroalkylene structure and a perfluoropolyether structure and having a hydrolyzable silyl group at both ends of its molecular chain, (B) an organic compound having at least one carbonyl group per molecule, and (C) one compound selected from (C-1) an organic compound having at least one primary amino group per molecule and (C-2) a compound having at least one proton per molecule and having an acid dissociation constant (pKa) in water of 2 or less. Another room temperature curable composition is also provided which comprises said (A) component, (B') an organosilicon compound having at least two silanol groups per molecule, and (C') a condensation accelerator.Type: GrantFiled: December 3, 1998Date of Patent: February 1, 2000Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takashi Matsuda, Takafumi Sakamoto, Shinichi Sato, Noriyuki Koike, Yasuo Tarumi, Tsuneo Kimura, Yasushi Yamamoto, Masatoshi Arai
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Patent number: 6015457Abstract: Processes for producing poly (hydrido siloxane) copolymers and processes for producing solutions of such copolymers for coating semiconductor substrates are provided. The copolymers have the general formula: (HSiO.sub.1.5).sub.a (HSiO(OR)).sub.b (SiO.sub.2).sub.c, wherein R is a mixture of H and an alkyl group having between 1 and 4 carbon atoms; a+b+c=1; 0.5<a<0.99; 0.01<b<0.5; and 0<c<0.5. Processes for producing the copolymers use alkoxysilanes as starting materials. Processes for producing coating solutions include removal of water and alcohol. Films of such coating solutions are useful as planarizing dielectric layers.Type: GrantFiled: March 12, 1998Date of Patent: January 18, 2000Assignee: AlliedSignal Inc.Inventors: Roger Y. Leung, Tadashi Nakano
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Patent number: 6001918Abstract: A silicone gel composition comprising: (A) 100 parts by weight of an organopolysiloxane containing at least two alkenyl groups per molecule and having a viscosity of 0.01 to 100 Pa.s at 25.degree. C.; (B) an organopolysiloxane containing at least two silicon-bonded hydrogen atoms per molecule and having a viscosity of 0.001 to 10 Pa.s at 25.degree. C. in an amount sufficient to provide from 0.2 to 5 moles of silicon-bonded hydrogen atoms per one mole of alkenyl groups in component (A); (C) 0.01 to 15 parts by weight of a silica powder having a specific surface area of at least 50 m.sup.2 /g; (D) 0.0001 to 1.0 part by weight of a diamine compound represented by the following general formula: R.sup.1.sub.2 N--R.sup.2 --NR.sup.1.sub.2 wherein each R.sup.1 is independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R.sup.Type: GrantFiled: July 6, 1998Date of Patent: December 14, 1999Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hiroji Enami, Akihiro Nakamura, Yuji Hamada, Takeaki Saiki
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Patent number: 6001928Abstract: A process for which making silicone-filler mixtures which comprises effecting the ring-opening polymerisation of a cyclosiloxane with a phosphazene base in the presence of a filler and of water, preferably from 0.5 mil to 10 mols of water per mol of phosphazene base. The filler is preferably selected from silica, alumina, titanium dioxide, carbon black and calcium carbonate, present in an amount of from 1 to 200 parts by weight per 100 parts by weight of cyclosiloxane. An agent or conditions which inhibit catalyst activity may initially be present (e.g. carbon dioxide or excess water), and polymerisation may be initiated by reducing the effect of the inhibiting agent or conditions (e.g. by heating). Silicon-elastomers produced by curing such silicone polymer-filler mixtures are also claimed.Type: GrantFiled: February 20, 1998Date of Patent: December 14, 1999Assignee: Dow Corning LimitedInventors: Brian Harkness, Richard Taylor
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Patent number: 6001214Abstract: In one aspect, this invention is a polyurethane sealant composition comprising (1) a urethane prepolymer having an isocyanate functionality of at least about 2.0 and a weight average molecular weight of at least about 2,000; and (2) a catalytic amount of (a) a substantially active hydrogen free glycol acid salt of a tertiary amine and an organo metallic compound, (b) a mixture of a substantially active hydrogen free glycol acid salt of a tertiary amine and an organo metallic compound and a second organometallic compound, or (c) a mixture of an organometallic compound with dimorpholinodialkyl ether or an dialkylmorpholinodialkyl ether.Type: GrantFiled: August 6, 1998Date of Patent: December 14, 1999Assignee: Essex Specialty Products, Inc.Inventors: Harry W. Hsieh, Syed Z. Mahdi
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Patent number: 5998562Abstract: The present invention relates to triazine-containing organosilicon compounds having units of the formulaA.sub.a R.sub.b X.sub.c SiO.sub.(4-a-b-c)/2 (I),whereR is identical or different and denotes a hydrogen atom or a monovalent substituted or unsubstituted hydrocarbon radical, having 1 to 26 carbon atoms, preferably 1 to 18 per radical,X is identical or different and is a halogen atom, a chlorine atom or a radical of the formula --OR.sup.1, where R.sup.1 denotes an alkyl radical, having 1 to 18 carbon atoms, preferably 1 to 8 per radical and which may be substituted by an ether oxygen atom,a is 0 or 1, preferably 0.01-0.5b is 0, 1, 2 or 3, preferably 0.5-3.0c is 0, 1, 2 or 3, preferably 0.0-2.0 and the sum a+b+c.ltoreq.4, preferably 0.1-3.5, andA is a radical of the formula ##STR1## where R.sup.Type: GrantFiled: July 7, 1997Date of Patent: December 7, 1999Assignee: Wacker-Chemie GmbHInventors: Guenter Mahr, Jochen Dauth, Bernward Deubzer, Monika Ott, Petra Gratzl, Hans Lautenschlager
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Patent number: 5990024Abstract: Novel methods for the preparation of polymers useful as precursors to ceramic materials by catalytic activation of Si--H bonds are disclosed. The methods comprise reacting, in the presence of a catalyst effective to activate Si--H bonds, Si--N bonds, or both, and/or a reactive solvent, a polymer in the form of a polysilane, polysilazane, polysiloxane or polycarbosilane with a reactant having the structural formula R--X--H, wherein X is NR' or O, R is H, organic, silyl, siloxyl, silazanyl or carbosilyl and may contain at least one additional X--H group, and R' is H, amino, silyl or silazanyl, to produce a modified polymer containing at least one Si--X bond. Polymers produced by these methods are also disclosed.Type: GrantFiled: June 16, 1997Date of Patent: November 23, 1999Assignee: SRI InternationalInventors: Yigal Blum, Gregory A. McDermott
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Patent number: 5990185Abstract: A preformed stabilizer composition based on a precursor stabilizer obtainable by reacting a silicon atom containing compound of formula R.sub.n SiX.sub.4-n or R.sub.n Si((--OSi(R.sup.1).sub.2).sub.p X).sub.4-n wherein the R groups are independently saturated or unsaturated hydrocarbyl groups, at least one R group being an olefinically unsaturated hydrocarbyl group; R.sup.1 is a hydrocarbyl group, X is a C.sub.1 to C.sub.10 alkoxy group, n is an integer from 1 to 3 and p is an integer greater than zero, with a polyether polyol having an average molecular weight in excess of 400 and a hydroxyl number in the range 20 to 280 is used to manufacture polymer polyol compositions having a combination of (a) high polymer content, from 30 weight percent to 60 weight percent, (b) lower viscosities, typically less than 9,000 centipose, (c) product stability such that 100% passes through a 150 mesh screen, and (d) up to 100% of the polymer solids content passes through a 700 mesh screen.Type: GrantFiled: March 19, 1998Date of Patent: November 23, 1999Assignee: The Dow Chemical CompanyInventor: Graeme Douglas Fogg
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Patent number: 5977220Abstract: A process to reduce the compression set of elastomeric silicone compositions, addition cured injection moldable compositions or millable compositions, comprises the incorporation of nitrogen compounds wherein the nitrogen possesses at least one organic substituent and the nitrogen is tetravalent wherein the nitrogen is cationic.Type: GrantFiled: December 29, 1997Date of Patent: November 2, 1999Assignee: General Electric CompanyInventors: Frank S. Burkus, II, Edward M. Jeram, Slawomir Rubinsztajn
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Patent number: 5969074Abstract: A reaction of perfluoroolefins with bis(silyl) ethers to produce novel partially fluorinated and perfluorinated copolymers and macrocyclic compounds is disclosed.Type: GrantFiled: May 21, 1993Date of Patent: October 19, 1999Assignee: E. I. du Pont de Nemours and CompanyInventors: William Brown Farnham, Mario Joseph Nappa
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Patent number: 5962616Abstract: Disclosed is an anaerobic hardening composition comprising (A) 100 parts by weight of a (meth)acryloyloxy group-containing polyorganosiloxane, (B) from 0.01 to 20 parts by weight of a dialkyl peroxide and (C) from 0.1 to 20 parts by weight of an amine. The composition hardens in the absence of oxygen with excellent hardenability and adhesiveness-revealing speed to give a hardened product having a high adhesion power.Type: GrantFiled: October 2, 1997Date of Patent: October 5, 1999Assignee: General Electric CompanyInventors: Tetsuo Fujimoto, Masahiro Terada, Isao Endo
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Patent number: 5962581Abstract: A method of forming a pattern comprising the steps of forming a film of an organosilane compound comprising a polysilane having a repeating unit represented by the following general formula (1) on a substrate, irradiating an actinic radiation onto a predetermined portion of the film of the organosilane compound formed on the substrate, and removing the predetermined portion of the film irradiated by the actinic radiation by dissolving it with an aqueous alkaline developing solution. ##STR1## wherein Ar is a substituted or non-substituted aryl group.Type: GrantFiled: April 26, 1996Date of Patent: October 5, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Shuzi Hayase, Yoshihiko Nakano, Rikako Kani, Mao Ito, Satoshi Mikoshiba, Takeshi Okino, Sawako Fujioka
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Patent number: 5962713Abstract: The present invention relates to new carbosilane dendrimers comprising Si--O-metal bonds, to a method of preparing them and to their use.Type: GrantFiled: August 6, 1997Date of Patent: October 5, 1999Assignee: Bayer AGInventors: Harald Kraus, Michael Mager
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Patent number: 5942073Abstract: Adhesive/adherend systems of this invention comprise a siloxane-modified adhesive component and a siloxane-modified adherend component. The siloxane-modified adhesive component is prepared by combining an epoxy resin with an organosilane ingredient, a polysiloxane resin, an amine hardener, an organometallic catalyst, a base catalyst, and any thickener and extender pigment. The siloxane-modified adherend component is prepared using a polysiloxane resin and may also contain other resins such epoxy, phenolic, polyester, vinyl ester, polyurethane, polyamide, melamine, furan, acrylate, thermoplastic polyvinyl chloride, polyethylene, polycarbonate, ABS, polystyrene, ethylene vinyl acetate, polyvinyl acetate, polyamide, and polypropylene resins.Type: GrantFiled: May 5, 1997Date of Patent: August 24, 1999Assignee: Ameron International CorporationInventors: Norman R. Mowrer, John F. Kane, Colin G. Hull
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Patent number: 5936031Abstract: A process for preparing polyalkylsilsesquioxane particles comprising:a) dissolving a surfactant in an alkyltrialkoxysilane or its partially hydrolyzed condensate;b) combining the mixture with water; andc) adding a basic material to the mixture to obtain the polyalkyisilsesquioxane particles.Type: GrantFiled: January 30, 1998Date of Patent: August 10, 1999Assignee: Eastman Kodak CompanyInventors: Paul E. Woodgate, Peter J. Makarewicz, Todd C. Zion
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Patent number: 5936111Abstract: Fluorinated amide compounds of formula (1) wherein Rf is a perfluoroalkyl or perfluoropolyether group having 1 to 800 carbon atoms, R is hydrogen, methyl or phenyl, and letter a is 1, 2 or 3 are novel and useful as a modifier intermediate capable of improving various properties of silicone and liquid fluororubber.Type: GrantFiled: December 18, 1997Date of Patent: August 10, 1999Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yasuo Tarumi, Kenichi Fukuda, Masatoshi Arai
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Patent number: 5936054Abstract: An addition-crosslinkable silicone rubber composition comprising the constituents(I) an alkenyl-functional polyorganosiloxane(II) a SiH-functional crosslinker(III) a hydrosilylation catalyst and(IV) at least one 1H-benzotriazole-5-carboxylic acid derivative selected from a group consisting of 1H-benzotriazole-5-carboxylic acid esters and 1H-benzotriazole-5-carboxylic acid amides.Type: GrantFiled: June 10, 1997Date of Patent: August 10, 1999Assignee: Wacker-Chemie GmbHInventors: Frank Achenbach, Christof Worner, Brigitte Ostermeier, Georg Eberl, Jelica Gegic
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Patent number: 5914420Abstract: Compositions of unstrained perfluorinated organo substituted cyclosiloxanes of formula (I): ##STR1## wherein m is an integer of 1 to 12; n is an integer of 1 to 4; X is a divalent radical which may include O, NH, N(CH.sub.3), OC(O), NHC(O), N(CH.sub.3)C(O)CH.sub.2 ; and R.sup.F is a perfluorinated straight chain or branched chain monovalent alkyl radical of 1 to 25 carbon atoms; or R.sup.F is a perfluorinated ether radical of the general formula (II): ##STR2## wherein p is an integer of 1 to 10 are described, along with copolymer compositions prepared from these cyclopolysiloxanes and from mixtures of these cyclosiloxanes and other siloxanes.Type: GrantFiled: May 29, 1998Date of Patent: June 22, 1999Assignee: PCR, Inc.Inventors: Mark A. Buese, John Scott Shaffer
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Patent number: 5908592Abstract: A liquid silicone rubber base including (A) an alkenyl-containing organopolysiloxane, (B) a reinforcing silica filler, (C) a mixing assistant in the form of a silanol-containing compound, (E) an organohydrogen polysiloxane, (f) a platinum catalyst and optionally, (D) a wetting auxiliary catalyst is prepared by previously mixing 10-120 parts of component (A) with 1-35 parts of component (C) and 0-35 parts of component (D) to form a premix liquid, mixing the premix liquid with 100 parts of component (B) to form a premix power, and kneading the premix powder with the remainder of component (A). By adding a curing agent of organohydrogenpolysiloxane/platinum catalyst to the liquid silicone rubber base, there is obtained a liquid silicone rubber composition having improved fatigue endurance.Type: GrantFiled: November 6, 1997Date of Patent: June 1, 1999Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kenichi Kimura, Takeo Yoshida, Manabu Narumi, Masaya Arakawa
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Patent number: 5905130Abstract: Disclosed is a process for the production of a polysilazane containing Si--N linkages in the main chain thereof. According to the present invention, the polysilazane is produced by reacting a polyaminosilane compound with a polyhydrogenated nitrogen-containing compound in the presence of a basic catalyst or by reacting a polyhydrogenated silicon compound with a polyhydrogenated nitrogen-containing compound in the presence of a basic solid oxide catalyst.Type: GrantFiled: August 25, 1997Date of Patent: May 18, 1999Assignee: Tonen CorporationInventors: Hirohiko Nakahara, Osamu Funayama, Takeshi Isoda
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Patent number: 5883215Abstract: A process for the ring-opening polymerisation of cyclosiloxanes, which comprises contacting a cyclosiloxane with 1-500 ppm by weight of a phosphazene base, based on the weight of cyclosiloxane, in the presence of water, preferably 0.5-10 mols per mol of phospazene base. Also claimed is a process in which the cyclosiloxane is present together with an agent which inhibits catalyst activity of the phosphazene base, e.g. carbon dioxide or water, in which the polymerisation is initiated by reducing the effect of the inhibiting agent e.g. by heating.Type: GrantFiled: February 20, 1998Date of Patent: March 16, 1999Assignee: Dow Corning, LtdInventors: Remy Bischoff, John S. Currie, William Herron, Richard Taylor