With N-containing Reactant Patents (Class 524/864)
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Patent number: 8822565Abstract: The invention relates to an aqueous silicone dispersion, containing one or more polyorganosiloxanes (POSs) intended to be crosslinked or having been crosslinked by elimination of water or alcohol, according to a polycondensation mechanism. The present invention also relates to methods for preparing aqueous silicone emulsions and dispersions.Type: GrantFiled: March 28, 2011Date of Patent: September 2, 2014Assignee: Bluestar Silicones France SASInventors: Nadia Martin, Martial Deruelle, Patricia Beurdeley
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Patent number: 7994246Abstract: A curable silicone composition comprising at least the following components: (A) an epoxy-containing organopolysiloxane; (B) a curing agent for epoxy resin; and (C) an epoxy compound represented by the specific general formula; is characterized by excellent handleability and reduced oil-bleeding, and, when cured, forms a cured body of excellent flexibility and adhesion.Type: GrantFiled: December 14, 2007Date of Patent: August 9, 2011Assignee: Dow Corning Toray Company, Ltd.Inventors: Yoshitsugu Morita, Tomoko Kato
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Patent number: 7026426Abstract: A room temperature curable organopolysiloxane composition comprising (A) an organopolysiloxane of HO(SiR12O)nH and/or (R2O)3-mR1mSiO(SiOR12O)nSiR1m(OR2)3-m wherein R1 is a monovalent C1–10 hydrocarbon radical, R2 is a monovalent C1–6 hydrocarbon radical, n is an integer of at least 10, and m is 0 or 1, (B) a silane compound having at least two hydrolyzable radicals, the remaining radicals being methyl, ethyl, propyl, vinyl or phenyl, and/or a partial hydrolyzate thereof, and (C) an organosilicon compound of (RO)pR13-pSiR3—NH—R4—NH2 wherein R1 and R2 are as defined above, R3 is a divalent C1–10 hydrocarbon radical, R4 is a divalent aromatic ring-bearing C7–10 hydrocarbon radical, and p is 1, 2 or 3, at least one of the NH and NH2 radicals being not directly attached to the aromatic ring in R4, cures into silicone rubber which has improved adherence even upon exposure to hot steam.Type: GrantFiled: October 28, 2003Date of Patent: April 11, 2006Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Tsuneo Kimura
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Patent number: 6916507Abstract: An aqueous water repellent useful in the treatment of substrates of lignocellulose-origin materials or the like is characterized by comprising the product of co-hydrolytic condensation of (A) 100 parts by weight of an organosilicon compound having the formula: (R1)a(OR2)bSiO(4-a-b)/2??(1) wherein R1 is alkyl, R2 is alkyl, 0.75?a?1.5, 0.2?b?3 and 0.9<a+b?4, and (B) 0.5-49 parts by weight of an amino-containing alkoxysilane having the formula: R3R4NR5—SiR6n(OR2)3-n??(2) wherein R3 and R4 are H or alkyl or aminoalkyl, R5 is a divalent hydrocarbon group, R6 is alkyl, and n is 0 or 1, or a partial hydrolyzate thereof in the presence of an organic acid or inorganic acid.Type: GrantFiled: June 20, 2003Date of Patent: July 12, 2005Assignees: Shin-Etsu Chemical Co., Ltd., Sumitomo Forestry Co., Ltd.Inventors: Kazuyuki Matsumura, Akira Yamamoto, Hisayoshi Suda, Kenichi Kadota
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Patent number: 6881416Abstract: Organopolysiloxane gel products having a variety of physical forms and which produce a silky feel when applied to the skin are prepared by reacting an unsaturated organopolysiloxane resin, an Si—H functional organosiloxane crosslinker bearing pendant hydrido functionality, a C4 or higher unsaturated hydrocarbon, and optionally, an unsaturated hydrophile component. Products ranging from viscous liquids, creamy gels, pastes, and soft powders may be obtained. The products are highly useful in formulating cosmetic and pharmaceutical products.Type: GrantFiled: April 8, 2002Date of Patent: April 19, 2005Assignee: Wacker Chemical CorporationInventor: Bryan E. Fry
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Patent number: 6774179Abstract: This invention pertains to silicone core-shell or gel particles that contain active ingredients. The silicone particles are produced by emulsifying and reacting a composition comprising a siloxane have a first reactive group, a crosslinker having a second reactive group, at least one emulsion liquid, a surfactant and an active ingredient. The active ingredient is encapsulated in the silicone particle and are useful in personal care products, textiles, auto care products, and laundry products for the delivery of active ingredients.Type: GrantFiled: December 13, 2001Date of Patent: August 10, 2004Assignee: Dow Corning CorporationInventors: Michael Salvatore Ferritto, Zuchen Lin, Janet Mary Smith
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Patent number: 6762241Abstract: The invention relates to polyurethane solutions with alkoxysilane structural units, processes for the preparation of polyurethane solutions containing alkoxysilane structural units and the use of polyurethane solutions containing alkoxysilane structural units.Type: GrantFiled: September 21, 2001Date of Patent: July 13, 2004Assignee: Bayer AktiengesellschaftInventors: Harald Blum, Detlef-Ingo Schütze
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Patent number: 6670439Abstract: A room temperature curable organopolysiloxane composition of the ketone removal type comprising a diorganopolysiloxane having a minimized content of low-molecular-weight organopolysiloxanes as a base polymer, and an alkenoxysilane as a crosslinking agent does emit essentially no low-molecular-weight siloxanes and organic matter with the passage of time after curing and is suitable for use as a sealant in a clean room and as a sealant or adhesive on electrical and electronic parts.Type: GrantFiled: October 11, 2002Date of Patent: December 30, 2003Assignee: Taisei CorporationInventors: Takafumi Sakamoto, Tsuneo Kimura, Yoshihide Wakayama
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Patent number: 6548574Abstract: An untreated filler and a high viscosity silicone polymer premix is charged into a compounding apparatus. Treating agent and additional silicone polymer are added to the premix and the premix, treating agent and additional silicone polymer are compounded to produce a heat vulcanizable filled silicone composition.Type: GrantFiled: December 21, 1999Date of Patent: April 15, 2003Assignee: General Electric CompanyInventors: Devesh Mathur, Alan L. Tate
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Patent number: 6455631Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes contain terminal hydrazide groups and correspond to the formula wherein the terminal, modified hydrazide groups are present in an amount of 1 to 25% by weight [calculated as C(O)—NH—NH—C(O), MW 84], based on the weight of the polyurethanes, and wherein X represents OR′ or NHR′, R represents the residue obtained by removing the isocyanate groups from an NCO prepolymer, R′ represents a group which is inert to Isocyanate groups under the conditions used to form the polyurethane of in formula I, R″ represents a divalent, linear or branched aliphatic group containing 2 to 10 carbon atoms, provided that there are at least two carbons between the oxygen atoms, wherein the aliphatic group may optionally be substituted by heteroatoms to form ether or ester groups, m is 0 or 1 and n is 2 to 4.Type: GrantFiled: December 1, 2000Date of Patent: September 24, 2002Assignees: Bayer Corporation, Bayer AktiengesellschaftInventors: Harald Blum, Lyubov K. Gindin, Karen M. Henderson, Patricia B. Jacobs, Sze-Ming Lee, Brian Long, Robert A. Sylvester, Douglas A. Wicks
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Publication number: 20020103292Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes contain terminal hydrazide groups and correspond to the formula 1Type: ApplicationFiled: December 1, 2000Publication date: August 1, 2002Inventors: Harald Blum, Lyubov K. Gindin, Karen M. Henderson, Patricia B. Jacobs, Sze-Ming Lee, Brian Long, Robert A. Sylvester, Douglas A. Wicks
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Patent number: 6403711Abstract: A high elongation, low 100% modulus composition comprises a copolymer dispersed in a continuous phase polysiloxane. The copolymer is made from high amounts of at least a monomer which is capable of forming a low Tg polymer and relatively low amounts of at least a monomer which is capable of forming a high Tg polymer. The monomer forming the low Tg polymer can be an alkyl acrylate whereas the monomers forming the high Tg polymer can be a vinyl ester, an acrylonitrile or derivatives thereof, a vinyl substituted aromatic such as styrene, an alkyl methacrylate, and the like. The composition has good adhesion to substrates as well as good viscosity aging, and can be utilized in caulks or sealants.Type: GrantFiled: January 10, 2000Date of Patent: June 11, 2002Assignee: Noveon IP Holdings Corp.Inventors: Wei-Yeih Yang, Melvin Dale Beers, Ta-Min Feng
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Patent number: 6395855Abstract: The present invention relates to mixtures containing bi-functionally terminated diorganopoly siloxanes aminosilane or oxime or alkoxy crosslinking agents, and optionally, filling materials, suitable additives, pigments, colorants, anti-oxidation pigments, anti-heat pigments, and light-protection pigments in addition to solvents and plasticizers. Said mixtures contain water and a catalyst in the form of an acidic or basic neutral salt as an accelerating cross-linking agent.Type: GrantFiled: August 31, 2000Date of Patent: May 28, 2002Assignee: Heidelberger Bauchemie GmbHInventors: Werner Luft, Michael Futscher, Hermann Pahl
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Patent number: 6365670Abstract: Organopolysiloxane gels containing gel-bound hydrophillic groups are prepared by reacting a hydrosilylatable unsaturated organopolysiloxane resin, a crosslinker bearing Si—H bound hydrogen, and a hydrosilylatable unsaturated hydrophile, in the presence of an effective amount of a hydrosilylation catalyst, at least a portion of the reaction taking place in the presence of at least 60 weight percent of an oleaginous composition containing at least 50 weight percent low viscosity organopolysiloxane. When sheared, the crosslinked organosiloxane compositions form a stable, preferably incompatible gel which may be used in turn to form a stable emulsion with large amounts of ordinarily incompatible hydrophillic liquids. The emulsions thus formed are suitable for use in a wide variety of cosmetic products.Type: GrantFiled: March 10, 2000Date of Patent: April 2, 2002Assignee: Wacker Silicones CorporationInventor: Bryan E. Fry
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Patent number: 6306502Abstract: A coating composition forming a abrasion resistant coating comprising (A) an ultraviolet-curable silicone prepared by chemically modifying particulate colloidal silica with a specific silane compound, (B) a monomer mixture comprising a (meth)acrylate having a specific isocyanate skeleton and a urethane poly(meth)acrylate having an alicyclic skeleton, and (C) a photo-polymerization initiator. By using a urethane poly(meth)acrylate having an alicyclic skeleton as part of the component (B) and the component (A) having an enhanced reactivity of chemical modification, the compatibility of the component (A) with the component (B) is improved to give a cured coating with excellent wear resistance, weather resistance and durability.Type: GrantFiled: March 19, 1998Date of Patent: October 23, 2001Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Hiroshi Fukushima, Misao Tamura, Osamu Takemoto, Katsumi Yonekura
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Patent number: 6235833Abstract: A water-repellent solution for forming a superior water-repellent film on a glass substrate is produced by subjecting a fluoroalkyl-group contained silane compound to a hydrolysis and a condensation polymerization. With this, at least dimers and trimers of the silane compound are produced. In case wherein the fluoroalkyl-group contained silane compound is of a type having the following general formula, satisfied performance of the formed water-repellent film is expected: CF3(CF2)m(CH2)2SiX3 wherein “m” is equal to or greater than 7 (seven) and “X” represents halogen, isocyanate-group or alkoxy-group, said alkoxy-group including methoxy-group [OCH3], ethoxy-group [OC2H5] or isopropoxy-group [OC3H5]. When the “m” is equal to or greater than 9 (nine), the performance of the film is much increased.Type: GrantFiled: February 12, 1999Date of Patent: May 22, 2001Assignee: Central Glass Company, LimitedInventors: Yoshinori Akamatsu, Shigeo Hamaguchi
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Patent number: 6218461Abstract: A silicone composition curing at room temperature by condensation, which is suitable especially as a dental molding composition. The silicone composition consists of the a) base paste containing a filler and polyorganosiloxane having hydroxy groups, b) and the activator component containing in addition to crosslinking agent and catalyst also a polyaddition product with alkoxysilyl groups in the molecule. The base paste and activator component can be mixed uniformly together and can be offered with special advantage in double cartridges.Type: GrantFiled: February 23, 1999Date of Patent: April 17, 2001Assignee: Heraeus Kulzer GmbH & Co. KGInventors: Peter Schwabe, Michael Freckmann, Klaus-Dieter Nehren
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Patent number: 6169140Abstract: The present invention relates to moisture-curable compositions containing a mixture of a) a polyisocyanate and b) a polyacrylate resin which has an alkoxysilane group content (calculated as Si, MW 28) of 0.2 to 4.5% by weight, based on the weight of the polyacrylate resin, and contains less than 0.2% by weight of hydroxy groups, based on the weight of the polyacrylate resin, wherein components a) and b) are present in amounts sufficient to provide an equivalent ratio of isocyanate groups to alkoxy groups, which are bound to Si, of 1.0:0.05 to 1.0:2.5. The present invention also relates to coatings, sealants and adhesives prepared from these compositions.Type: GrantFiled: April 28, 1999Date of Patent: January 2, 2001Assignee: Bayer CorporationInventors: Richard R. Roesler, Myron W. Shaffer
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Patent number: 6166121Abstract: A curable organopolysiloxane composition that can form a cured product that is strongly adhesive to substrates such as glasses, plastics, and metals and exhibits a very durable adhesion in which adhesiveness is maintained even under severe conditions such as immersion in hot water. The curable organopolysiloxane composition comprises from 1 to 75 weight % of a calcium carbonate powder whose surface has been treated with both (a) a rosin or a rosin derivative and (b) a fatty acid or a fatty acid derivative.Type: GrantFiled: April 23, 1999Date of Patent: December 26, 2000Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Wataru Nishiumi, Seiji Hori
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Patent number: 6090885Abstract: A silicone emulsion useful as a component in hair care compositions In a first aspect of the present invention, a silicone emulsion comprises the product of a base catalyzed reaction of an aqueous emulsion of a hydroxy end-stopped polyorganosiloxane and an aminofunctional silane according to the structural formula: ##STR1## wherein: R.sup.1 and R.sup.2 are each independently H, alkyl, or an aminoalkyl group according to the structural formula: ##STR2## and wherein: R.sup.4, R.sup.5 and R.sup.6 are each independently (C.sub.1 -C.sub.12)alkyl or (C.sub.2 -C.sub.8)alkoxy, provided that at least two of R.sup.4, R.sup.5 and R.sup.6 are each (C.sub.2 -C.sub.8)alkoxy;R.sup.7 and R.sup.8 are each H or alkyl; andR.sup.3 and R.sup.9 are each independently alkylene.Type: GrantFiled: October 6, 1998Date of Patent: July 18, 2000Assignee: General Electric CompanyInventors: An-Li Kuo, Virginia Van Valkenburg Powell, Frank J. Traver
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Patent number: 6090904Abstract: Compositions and methods of making them are described and claimed which comprise a polymeric material having not less than two groups bonded to silicon which are hydroxyl or hydrolysable groups, a silane cross-linking agent having at least two oximo groups which are reactive with said polymeric material in presence of moisture to release an oxime condensation by-product and a component effective to control emission of volatile oxime compounds from the composition as it cures. The component effective to control emission of volatile oxime compounds from the composition as it cures is preferably an organic isocyanate having at least one isocyanate group and is preferably present in a stoichiometric ratio with the proportion of condensation by-product to be evolved. The polymeric material is preferably according to the general formula X-A-X where A represents a polyoxyalkylene chain or a polydiorganosiloxane chain and X represents a hydroxyl or hydrolysable group selected form --R".sub.2 SiCH, --R"Si(OR.sup.5).Type: GrantFiled: April 20, 1998Date of Patent: July 18, 2000Assignee: ARA Werk Kramer GmbHInventors: Dieter Korner, Dieter Muller
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Patent number: 6022923Abstract: A pneumatic tire having improved rolling resistance and wear resistance comprises a tread made from a rubber composition containing a partially hydrophobizated silica subjected to a surface treatment with an organosilicon compound so as to have specified hydrophobization ratio and apparent density.Type: GrantFiled: August 28, 1997Date of Patent: February 8, 2000Assignee: Bridgestone CorporationInventors: Shunji Araki, Kazuhiro Yanagisawa
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Patent number: 5985994Abstract: Aqueous dispersions organopolysiloxanes which are free of organic transition metal compounds and of organic compounds of the metals of the main groups III, IV and V. These dispersions can be produced using the following starting compounds:(A) organopolysiloxane containing condensation-capable groups;(B) an organosilicon compound of the formula{[(RO).sub.3 Si--R.sup.3 --].sub.e R.sup.2.sub.1-e }.sub.a Si(OR).sub.4-a(II),in whichR is identical or different and is a hydrogen atom or alkyl radical having 1 to 6 carbon atoms,R.sup.2 is identical or different and is an SiC-bonded hydrocarbon radical having 1 to 18 carbon atoms, optionally substituted with halogen atoms, ether groups, ester groups, epoxy groups, mercapto groups or (poly)glycol radicals comprised of oxyethylene units, oxypropylene units and mixtures thereofR.sup.3 is identical or different and is a divalent hydrocarbon radical,a is 0 or 1, ande is 0 or 1 where {[(RO).sub.3 Si--R.sup.3 --].sub.e R.sup.2.sub.1-e }.sub.Type: GrantFiled: November 10, 1997Date of Patent: November 16, 1999Assignee: Wacker-Chemie GmbHInventors: Stefan Oberneder, Karl Braunsperger, Alfred Heinrich, Rudolf Braun, Herbert Soellradl
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Patent number: 5973023Abstract: The discoloration of a non-acidic room temperature vulcanizable silicone sealant containing a ultraviolet radiation degradable fungicide is delayed by adding zinc oxide.Type: GrantFiled: April 4, 1996Date of Patent: October 26, 1999Assignee: Dow Corning CorporationInventors: Michael Gene Altes, Virginia Kay O'Neil, Arthur James Tselepis, Andreas Thomas Franz Wolf
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Patent number: 5952077Abstract: Surfactant compositions including end-capped hydrocarbyl polyalkoxylate and/or fatty acid polyalkoxylate and organopolysiloxane having one or more polyoxyalkylene side chains are good immediate and long term spreaders particularly on fibrous hydrophobic synthetic polymeric substrates such as spun-bonded, non-woven materials made e.g. form polyolefins, especially polypropylene, or PET. Particularly useful alkoxylates are of one of the formulae (Ia to Id): R.sup.1 O.(AO.sup.1).sub.n.R.sup.2 (Ia); R.sup.3.CO.sub.2.(AO.sup.1).sub.n.R.sup.2 (Ib); R.sup.14 O.?EO.sub.i.PO.sub.j !.R.sup.15 (Ic); or R.sup.14 O.(AO.sup.2).sub.k.(AO.sup.3).sub.l.(AO.sup.2).sub.m.R.sup.15 (Id), where the various substituents and indices have defined meanings and useful silicones include those of the formula (II): R.sup.4.sub.3 SiO.?R.sup.4.sub.2 SiO!.sub.x.{(R.sup.4 Si?(O.R.sup.5.(AO.sup.2).sub.m.R.sup.6 !O}.sub.y.SiR.sup.4.sub.3, where the various substituents and indices have defined meanings.Type: GrantFiled: August 26, 1997Date of Patent: September 14, 1999Assignee: Imperial Chemical Industries PLCInventors: David John Booth, Martin Spencer Williams
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Patent number: 5939478Abstract: The viscosity of a solvent is modified by thickening the solvent with a silicone latex. A silicone latex having a plurality of crosslinked polysiloxane particles is first prepared by mixing the siloxane polymer, a surfactant, and water; emulsifying the mixture to a gel phase; diluting the emulsion with water; adding a cure package (i.e., a catalyst, a crosslinker, or both, or a self catalytic crosslinker); and then without removing the water from the latex and after the particles of siloxane polymer in the latex have been cured, mixing the latex and solvent to thicken the solvent, forming viscous liquids, gels, and pastes. Water in the latex thickened solvent composition can be stabilized by adding a silicone polyether during mixing of the latex and the solvent.Type: GrantFiled: November 13, 1997Date of Patent: August 17, 1999Assignee: Dow Corning CorporationInventors: James Anderson Beck, Vicky Sue Cobb, Cassie Emelia Cuthbert, Eric Jude Joffre, Virginia Kay O'Neil, Burt Michael Wrolson
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Patent number: 5936032Abstract: The present invention provides for a two component room temperature vulcanizable silicone compositions wherein both components may be used in approximately equal weights or volumes thereby minimizing the effects of mixture ratio errors.Type: GrantFiled: February 26, 1997Date of Patent: August 10, 1999Assignee: General Electric CompanyInventor: Richard O. Angus, Jr.
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Patent number: 5936033Abstract: A method for preparing a room temperature curing organopolysiloxane composition having good working properties, which comprises (A) a diorganopolysiloxane having at least two hydroxyl groups bonded to silicon atoms in one molecule, (B) a thixotropy improver, (C) a finely divided silica powder, (D) at least one member selected from organosilanes having two or more ketoxime groups bonded to a silicon atom in one molecule and partial hydrolyzates thereof, (E) a curing catalyst for the condensation curing reaction between (A) and (D) components, and (F) an amine-based silane coupling agent for imparting adhesiveness to the composition, wherein the (A), (B) and (C) components are first mixed, with which the (D) and (E) components are further mixed, and the (F) component is finally added to and mixed with the resultant mixture.Type: GrantFiled: December 19, 1996Date of Patent: August 10, 1999Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tsuneo Kimura, Koji Yokoo, Mamoru Teshigawara
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Patent number: 5916939Abstract: An internal mold release system is provided which comprises (a) a polysiloxane compound; and (b) an amine salt of a carboxylic acid.Type: GrantFiled: January 20, 1995Date of Patent: June 29, 1999Assignee: Imperial Chemical Industries PLCInventors: Herbert Russell Gillis, Paul William Mackey
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Patent number: 5902759Abstract: The present invention provides for microporous ceramic materials having a surface area in excess of 70 m.sup.2 /gm and an open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.03 cm.sup.3 /gm of the ceramic. The invention also provides for a preceramic composite intermediate composition comprising a mixture of a ceramic precursor and finely divided silicon carbide or silicon nitride, whose pyrolysis product in inert atmosphere or in an ammonia atmosphere at temperatures of up to less than about 1100.degree. C. gives rise to the microporous ceramics of the invention. Also provided is a process for the preparation of the microporous ceramics of the invention involving pyrolysis of the ceramic intermediate under controlled conditions of heating up to temperatures of less than 1100.degree. C. to form a microporous ceramic product.Type: GrantFiled: January 21, 1997Date of Patent: May 11, 1999Assignee: Exxon Research and Engineering Co.Inventors: John Pickett Dismukes, Jack Wayne Johnson, Edward William Corcoran, Jr., Joseph Vallone, James J. Pizzulli, Jr., Michael P. Anderson
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Patent number: 5840805Abstract: A highly storage-stable room-temperature-curable organopolysiloxane composition that cures to yield a product whose surface resists staining and that does not cause staining of the neighboring regions of the substrate in contact with said cured product. The organopolysiloxane composition is made from a polydiorganosiloxane, an imidazolinyl-functional organosiloxane, a filler, and a crosslinking compound which is a Si-bonded hydrolyzable group-containing organosilane or organosiloxane oligomer.Type: GrantFiled: October 25, 1995Date of Patent: November 24, 1998Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hisataka Nakashima, Shigeki Sugiyama
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Patent number: 5804616Abstract: Epoxy-polysiloxane polymer compositions of this invention are prepared by combining a resin component with a hardener component. The resin component comprises a non-aromatic epoxy resin ingredient and a polysiloxane ingredient. The hardener component comprises an amine and optionally an organotin catalyst. The composition can also include aggregates, pigments, and other additives depending on the particular end use. The composition is prepared using a sufficient amount of water to promote hydrolysis of the polysiloxane and the polycondensation of the silanols produced by such hydrolysis. In its cured form, the epoxy-polysiloxane composition exists as a uniformly dispersed arrangement of linear epoxy chain fragments that are cross-linked with a continuous polysiloxane polymer chain, thereby forming a non-interpenetrating polymer network chemical structure that has substantial advantages over conventional epoxy systems.Type: GrantFiled: January 27, 1997Date of Patent: September 8, 1998Assignee: Ameron International CorporationInventors: Norman R. Mowrer, Raymond E. Foscante, J. Luis Rojas
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Patent number: 5789480Abstract: A method for the preparation of one-package room-temperature-curable silicone compositions that do not slump prior to their cure, do not crack or fissure during their cure even when deformed by an external force, and do not yellow where an example of the room-temperature-curable silicone compositions is(a) hydroxyl-terminated diorganopolysiloxane,(b) oxime-functional organosilicon compound, and(c) inorganic filleraccording to the following four steps:step (1) in which 20 to 70 weight % of the total amount of component (a) is mixed with methyltris(methyl ethyl ketoximo)silane,step (2) in which component (c) is added and mixed into the mixture prepared in step (1),step (3) in which 30 to 80 weight % of the total amount of component (a) is mixed with vinyltris(methyl ethyl ketoximo)-silane,step (4) in which the mixture prepared in step (3) is mixed with the mixture prepared in step (2).Type: GrantFiled: March 27, 1996Date of Patent: August 4, 1998Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hiroshi Adachi, Toshio Saruyama, Shigeki Sugiyama, Itsuo Toyoda
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Patent number: 5726241Abstract: A finish composition for a precursor for high-performance carbon fibers, containing (1) 0.2-10 parts by weight of an aminocarboxylic material selected from the group consisting of carboxylic acid salts of alkylamines, carboxylic acid salts of arylamines, carboxylic acid salts of alkylarylamines, amino acids and betaine compounds, and (2) 100 parts by weight of a mixture of (a) 80-20 parts by weight of a finish prepared by adding, to (i) a silicone finish containing 50 wt % or more of an amino-modified polysiloxane having a nitrogen content in amino groups in the range of 0.05-2.0 wt % and a viscosity at 25.degree. C. of 500 centistokes or more, (ii) 0.3-5.0 molar equivalents of a lower aliphatic monocarboxylic acid of 6 carbon atoms or less with respect to 1 mole of the amino group, and (b) 20-80 parts by weight of a nonionic emulsifier consisting mainly of a polyoxyethylene alkyl ether, a polyoxyethylene alkylaryl ether or a polyoxyethylene fatty acid ester.Type: GrantFiled: September 17, 1996Date of Patent: March 10, 1998Assignee: Hexcel CorporationInventors: Kunio Maruyama, Ryuichi Koide
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Patent number: 5721309Abstract: A water based coating composition provides a stain resistant layer which adheres well to a substrate and is resistant to chemical attack by common household cleaning solvents such as isopropyl alcohol. The coating composition has a very low volatile organic compound content, thus providing an environmentally desirable alternative to organic solvent based coatings. The low volatile organic compound content of the composition substantially or completely eliminates the problems and expenses associated with solvent recovery for meeting chemical emission standards, and the potential for human exposure to solvent vapor is substantially eliminated or significantly reduced. The coating composition is aqueous based and incorporates a crosslinkable acrylic polymer latex, an amino resin crosslinking agent and a crosslinking catalyst. The polymer, crosslinking agent and catalyst are dispersed and/or solubilized in an aqueous medium.Type: GrantFiled: September 19, 1996Date of Patent: February 24, 1998Assignee: GenCorp Inc.Inventors: Satish C. Sharma, John P. Kovalchin, Raymond J. Weinert
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Patent number: 5712343Abstract: The invention relates to the preparation of organopolysiloxane microemulsions, wherein the components (A) organopolysiloxane, (B) emulsifier, (C) water, optionally, (D) cosurfactant and optionally (E) acid are brought together and mixed in any desired sequence. Microemulsions are formed spontaneously without introduction of energy in the form of heat or severe shearing forces.Type: GrantFiled: April 17, 1996Date of Patent: January 27, 1998Assignee: Wacker-Chemie GmbHInventors: Michael Geck, Hans-Juergen Lautenschlager, Bernward Deubzer, Petra Stinglhammer, Peter Habereder, Kurt Ullrich
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Patent number: 5663227Abstract: An improved release agent for linerless pressure sensitive postage stamps, comprising a low adhesion backsize, preferably organo polysiloxane polyurea block copolymer, as disclosed by Tushaus, et al. (U.S. Pat. No. 5,290,615), containing therein a dispersion of calcium carbonate in the range of 2 to 7 percent by weight, and polyvinyl pyrrolidone in the range of 4 to 10 percent. The combined level of both additives to said low adhesion backsize is about 8 to 12 percent. The preferred levels of each additive are: polyvinyl pyrrolidone at 4 percent and calcium carbonate at 4 percent, to achieve a desired minimum drying time for cancellation ink imposed upon a surface of said release agent.Type: GrantFiled: March 14, 1996Date of Patent: September 2, 1997Assignee: United States Postal ServiceInventors: Ronald B. Birkholz, Mark E. Schwartz
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Patent number: 5661196Abstract: The present invention relates to organopolysiloxane-containing compositions which are self-dispersing in water, their preparation and their use. The compositions of the present invention are suitable for all uses where organosilicon compounds, especially in water-diluted form, can be employed. Such uses include uses as water repellant agents on building materials.Type: GrantFiled: November 8, 1993Date of Patent: August 26, 1997Assignee: Wacker-Chemie GmbHInventors: Hans Mayer, Gunther Kolleritsch, Ingeborg Konig-Lumer
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Patent number: 5643987Abstract: The present invention provides for microporous ceramic materials having a surface area in excess of 70 m.sup.2 /gm and an open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.03 cm.sup.3 /gm of the ceramic. The invention also provides for a preceramic composite intermediate composition comprising a mixture of a ceramic precursor and finely divided silicon carbide or silicon nitride, whose pyrolysis product in inert atmosphere or in an ammonia atmosphere at temperatures of up to less than about 1100.degree. C. gives rise to the microporous ceramics of the invention. Also provided is a process for the preparation of the microporous ceramics of the invention involving pyrolysis of the ceramic intermediate under controlled conditions of heating up to temperatures of less than 1100.degree. C. to form a microporous ceramic product.Type: GrantFiled: May 24, 1994Date of Patent: July 1, 1997Assignee: Exxon Research and Engineering CompanyInventors: John Pickett Dismukes, Jack Wayne Johnson, Edward William Corcoran, Jr., Joseph Vallone, James J. Pizzulli, Jr., Michael P. Anderson
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Patent number: 5639823Abstract: A non-yellowing one-package, RTV, silicone elastomer composition is prepared and has properties such that prior to its cure, it is highly workable and that during its cure does not crack or fissure even when deformed by external force. These one-package, room-temperature-vulcanizable, silicone elastomer compositions comprise (A) diorganopolysiloxane endblocked by oxime group-containing organic radicals where at least 50 mole of the end groups contain alkenyl radicals, (B) oxime group-containing organosilane where no more than 50 mole % of the silane molecules contain alkenyl, and (C) inorganic filler.Type: GrantFiled: September 28, 1995Date of Patent: June 17, 1997Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hiroshi Adachi, Toshio Saruyama
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Patent number: 5635547Abstract: The process comprises the steps of (A) mixing a base material (A-1), which is obtained by mixing an organopolysiloxane and a reinforcing silica and then heating the resulting mixture, with an aminosilane compound (A-2) represented by the formula:(R.sup.1).sub.n Si[N(R.sup.2).sub.2 ].sub.(4-n)wherein a plurality of R.sup.1 may be the same or different and are each a substituted or unsubstituted monovalent hydrocarbon group, a plurality of R.sup.2 may be the same or different and are each a substituted or unsubstituted monovalent hydrocarbon group, and n is 2 or 3; to allow them to react; and (B) heating the reaction mixture obtained in the step (A) under normal pressure or reduced pressure to remove an unreacted aminosilane compound and a by-product amine, contained in the reaction mixture.Type: GrantFiled: April 5, 1995Date of Patent: June 3, 1997Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaharu Takahashi, Minoru Igarashi
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Patent number: 5625025Abstract: The present invention relates to a silicone composition comprising a mixture of (A) an amino-functional diorganopolysiloxane oil free of phenol groups and having at least 1 amino group per molecule and (B) a diorganopolysiloxane oil free of amino groups and having at least 1 phenol group per molecule. The silicone composition has a viscosity of from 10 to 100,000 mm.sup.2 /s at 25.degree. C. and an average phenol equivalent weight of 10,000 to 5,000,000. The silicone compositions of the present invention are highly heat-resistant, exhibit excellent release properties, and superior lubrication properties.Type: GrantFiled: February 21, 1995Date of Patent: April 29, 1997Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hiroki Ishikawa, Tsutomu Naganawa, Isao Ona
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Patent number: 5616647Abstract: A method for producing a room temperature vulcanizable composition that has a high rate of extrusion and a low sag wherein a base mixture of a diorganopolysiloxane and an end stopping cross linking ketoximosilane are reacted prior to being added to a first injection port along an extruder, an inorganic filler being added to said base mixture at a second injection port along the extruder, an M stopped silicone fluid being partitioned into two parts and the first part of said M stopped fluid being added to the filler containing base mixture at a third injection port at the middle of the extruder, and a tin catalyst, an adhesion promoter and the second part of the M stopped fluid being added at a fourth injection port along the extruder said mixture comprising these components being extruded towards the extruder exit port.Type: GrantFiled: January 22, 1996Date of Patent: April 1, 1997Assignee: General Electric CompanyInventors: John J. Dziark, Michael R. Pink, John P. Martucci
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Patent number: 5597882Abstract: The compositions proposed contain, as their main constituents,(a) a diorganopolysiloxane with triorganosiloxy groups as terminal groups, the organic groups being hydrocarbon groups which may be halogenated,(b) the reaction product of a diacylated diorganotin compound with a disilaalkane containing, per molecule, at least two monovalent hydrocarbon groups which are bonded to silicon via oxygen and may optionally be substituted by an alkoxy group, or with an oligomer of such a disilaalkane,(c) an organosilicon compound containing, per molecule, at least one amino or amino group bonded to silicon via carbon,(d) optionally, a filler and(e) optionally, a disilaalkane and/or silane containing, per molecule, at least three monovalent hydrocarbon groups which are bonded to silicon via oxygen and may optionally be substituted by an alkoxy group, or an oligomer of such a disilaalkane and/or silane.Type: GrantFiled: September 6, 1994Date of Patent: January 28, 1997Assignee: Wacker-Chemie GmbHInventors: August Schiller, Norman Dorsch, Werner Graf, Alois Strasser
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Patent number: 5594061Abstract: A water based coating composition provides a stain resistant layer which adheres well to a substrate and is resistant to chemical attack by common household cleaning solvents such as isopropyl alcohol. The coating composition has a very low volatile organic compound content, thus providing an environmentally desirable alternative to organic solvent based coatings. The low volatile organic compound content of the composition substantially or completely eliminates the problems and expenses associated with solvent recovery for meeting chemical emission standards, and the potential for human exposure to solvent vapor is substantially eliminated or significantly reduced. The coating composition is aqueous based and incorporates a crosslinkable acrylic polymer latex, an amino resin crosslinking agent and a crosslinking catalyst. The polymer, crosslinking agent and catalyst are dispersed and/or solubilized in an aqueous medium.Type: GrantFiled: March 11, 1994Date of Patent: January 14, 1997Assignee: GenCorp Inc.Inventors: Satish C. Sharma, John P. Kovalchin, Raymond J. Weinert
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Patent number: 5573694Abstract: Aqueous microemulsions of protonated aminopolysiloxanes (.alpha.) comprising an amphoteric surfactant (.beta.) and optionally at least one non-ionic emulsifier (.gamma.) and optionally hydrotropics (.delta.) and/or cationic emulsifiers (.eta.) and the pH of which is .ltoreq.7 are suitable as finishing agents of good stability, in particular stability to shearing forces, for the treatment of fibrous material, in particular textile material.Type: GrantFiled: March 3, 1995Date of Patent: November 12, 1996Assignee: Sandoz Ltd.Inventor: Bernard Danner
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Patent number: 5569750Abstract: A room temperature vulcanizable silicone rubber composition with crack resistant properties with improvement during cure, comprising a silanol end-stopped diorganopolysiloxane polymer; a methyl tris-(methyl ethyl ketoximino)silane crosslinker, an aminohydrocarbyl substituted ketoximinosilane adhesion promoter; a reinforcing or non-reinforcing filler or filler mixture, and an optional catalyst and plasticizer. These compositions cure to elastic materials useful as caulking materials, adhesives, coatings and encapsulating materials for the construction and other industries.Type: GrantFiled: May 24, 1994Date of Patent: October 29, 1996Assignee: AlliedSignal Inc.Inventors: Jeffrey A. Knepper, Dale R. Flackett, Edward T. Asirvatham
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Patent number: 5556902Abstract: The present invention provides a silicone antifoaming agent composition excellent in the persistence of the foam controlling effect. The silicone antifoaming agent composition comprises a polydiorganosiloxane and silica, which form an antifoaming agent to be improved, and 4 to 2,500 parts by weight per 100 parts by weight of the sum total of the polydiorganosiloxane plus silica of a modified silicone oil having at least one organic group bonded to a silicon atom and having at least one functional group selected from among epoxy, amino, amide, carboxyl, alkoxyl and hydroxyl groups and at least one substituted or unsubstituted polyoxyalkylene group bonded to a silicon atom.Type: GrantFiled: November 6, 1990Date of Patent: September 17, 1996Assignee: Dow Corning K.K.Inventors: Hiroaki Shouji, Koichi Aizawa
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Patent number: 5554684Abstract: Disclosed is a method of forming a polyimide coating in a pattern on a surface. A first solution is prepared of an organic solvent, and diamine and dianhydride monomers. The monomers are polymerized to form a polyamic acid that is soluble in the organic solvent. About 10 to about 95% of the amic acid groups in the polyamic acid are imidized, forming a partially imidized polyamic acid. A more concentrated solution of the partially imidized polyamic acid is prepared and about 0.1 to about 10 wt % of a thixotrope is mixed with the more concentrated solution to form a paste. A template is placed over the surface and the paste is forced through the template onto the surface. The solvent is evaporated and the partially imidized polyamic acid on the surface is fully imidized.Type: GrantFiled: December 16, 1994Date of Patent: September 10, 1996Assignee: Occidental Chemical CorporationInventors: Jin-O Choi, John A. Tyrell, Paul D. Dubell
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Patent number: 5550185Abstract: The silicone rubber composition of the present invention comprises (A) an organopolysiloxane obtained by mixing and heating an organopolysiloxane having a silanol group at both ends of the molecular chain and a silane or a siloxane having two hydrolyzable groups in the molecule, (B) a finely divided silica, and (C) a curing agent. The composition, wherein the content of low-molecule siloxanes is remarkably constrained, is quite useful in the application wherein low-molecular siloxanes are obnoxious, for example, in the application of electrical contacts and parts used adjacent thereto, roll materials of copying machines, gaskets for construction, etc.Type: GrantFiled: May 10, 1994Date of Patent: August 27, 1996Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yoshio Inoue, Masaharu Takahashi, Susumu Sekiguchi, Minoru Igarashi