Patents Represented by Attorney Sharon K. Severance
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Patent number: 5262555Abstract: The instant invention pertains to a high-productivity. high-yield method for the preparation of acryloxy group-containing or methacryloxy group-containing organosilicon compounds. The method of the instant invention comprises an addition reaction, in the presence of a hydrosilylation-reaction catalyst, between (A) an ester of acrylic acid with aliphatic ally unsaturated alcohol or aliphatically unsaturated phenol; or (B) an ester of methacrylic acid with aliphatically unsaturated alcohol or aliphatically unsaturated phenol; and (C) a silicon compound that contains silicon-bonded hydrogen and by then distilling the reaction mixture in the presence of a metal halide.Type: GrantFiled: March 15, 1993Date of Patent: November 16, 1993Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Tadashi Okawa, Shuji Yamada
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Patent number: 5256755Abstract: Process for the production of organosiloxanes comprising contacting (A) at least one organosilicon compound having in the molecule at least one silanol group, the organic substituents being selected from monovalent hydrocarbon groups having from 1 to 14 carbon atoms and monovalent substituted hydrocarbon groups having from 1 to 10 carbon atoms, with (B) one or more compounds selected from rubidium carbonate, cesium carbonate and carboxylates of rubidium and cesium.Type: GrantFiled: August 3, 1992Date of Patent: October 26, 1993Assignee: Dow Corning LimitedInventor: Stephen Westall
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Patent number: 5232689Abstract: Translucent antiperspirant compositions are comprised of an antiperspirant active in a gel base. The translucent antiperspirant composition is comprised of (A) 50 to 95% by weight of an anhydrous carrier liquid selected from volatile silicones, low viscosity silicones, anhydrous monoalcohols, polyalcohols, fatty alcohols, alcohol soluble emollients and mixtures thereof; (B) 5 to 20% by weight of a metal stearate; (C) 1 to 25% of an encapsulated antiperspirant active selected from an encapsulated aluminum salt, an encapsulated aluminum-zirconium salt and mixtures thereof and optionally (D) 0.5 to 10 weight percent of a silicone carboxy acid. The compositions do not leave a visible white residue when they are applied to the skin.Type: GrantFiled: August 7, 1991Date of Patent: August 3, 1993Assignee: Dow Corning CorporationInventors: Dimitris E. Katsoulis, Janet M. Smith
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Patent number: 5210129Abstract: A method of making a dispersion of a high viscosity siloxane in a volatile, especially cyclic siloxane, comprises first dispersing organopolysiloxanes having at least 2 Si--OR groups, wherein R is H or alkyl in a volatile siloxane and adding a catalyst which is either a phosphonitrile halide having the general formula [X(PX.sub.2 .dbd.N).sub.n PX.sub.3 ].sup.+ [MX.sub.(v-t+1) R.sub.t ].sup.-, or a heterogeneous catalyst selected from Li, Mg, Ca, Sr or Ba hydroxide, Na or K borate or phosphate, Rb or Cs carbonate or carboxylates of Rb or Cs wherein M is an element having an electronegativity of from 1.0 to 2.0, R is alkyl, X is halide, n is 1 to 6, v is the valence of M and t is from 0 to (v-1).Type: GrantFiled: March 2, 1992Date of Patent: May 11, 1993Assignee: Dow Corning S.A.Inventors: Jean de la Croi Habimana, Stephen Westall
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Patent number: 5208097Abstract: This invention pertains to a base fabric for an air bag coated with a silicone rubber which has excellent properties of folding for storage and sewing fabrication in addition to excellent adhesion to withstand impact with extension, especially extension at a high temperature.The surface of the fabric comprised of a polyamide fiber or polyester fiber is (I) coated with a thermosetting organopolysiloxane product comprised of (A) an unvulcanized organopolysiloxane rubber containing 2 or more alkenyl groups in a molecule, (B) silica in the form of a very fine powder, (C) an organopolysiloxane comprised of at least 5 silicon atoms in the main chain and further containing 1 or more trialkoxysilyl groups bonded with a silicon atom through a carbon atom, 1 or more epoxyalkyl groups and 3 or more hydrogen atoms bonded with a silicon atom, (D) a catalyst for the hydrosilylation reaction and (E) an organic solvent; followed by (II) a hardening process by heating.Type: GrantFiled: October 23, 1992Date of Patent: May 4, 1993Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hiroshi Honma, Takehiko Sakai, Takao Matsushita
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Patent number: 5171809Abstract: Novel silicone acrylate polymers and a method for their preparation is disclosed. These polymers are formed from silicone acrylates, silicone diacrylates, or mixtures with organic acrylates. The copolymer formed from the reaction mixture of silicone acrylates and organic acrylates is useful in enhancing glass reinforced polyesters.Type: GrantFiled: October 16, 1989Date of Patent: December 15, 1992Assignee: Dow Corning CorporationInventors: Terrence K. Hilty, Anthony Revis, Howard M. Bank, David P. Jones
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Patent number: 5162479Abstract: The use of siloxanes for conditioning of hair is disclosed. They hold particular usefulness as substitutes for oxidizing agents in the hair waving process. A novel polymeric composition which comprises a silanol endblocked polydiorganosiloxane, cyclic siloxanes, a chlorobenzyl-functional siloxane and a catalyst is also disclosed.Type: GrantFiled: April 8, 1991Date of Patent: November 10, 1992Assignee: Dow Corning CorporationInventors: Daniel J. Halloran, Thomas H. Lane, Robert A. Ekeland
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Patent number: 5162396Abstract: Novel silicone acrylate polymers and a method for their preparation is disclosed. These polymers are formed from silicone acrylates, silicone diacrylates, or mixtures with organic acrylates. The copolymer formed from the reaction mixture of silicone acrylates and organic acrylates is useful in enhancing glass reinforced polyesters.Type: GrantFiled: March 2, 1992Date of Patent: November 10, 1992Assignee: Dow Corning CorporationInventors: Terrence K. Hilty, Anthony Revis, Howard M. Bank, David P. Jones
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Patent number: 5160732Abstract: Encapsulated aluminum and aluminum-zirconium salt compositions are produced by combining and heating an aqueous aluminum or aluminum-zirconium salt; a hydrophobic liquid; and a silicone carboxy acid or silicone carboxy acid derivative. The mixture is heated until substantially all of the free water has been removed. The encapsulated aluminum and aluminum-zirconium salt compositions precipitate out after the removal of the water. The encapsulated aluminum and aluminum-zirconium salt compositions are useful in deodorant and antiperspirant compositions.Type: GrantFiled: August 7, 1991Date of Patent: November 3, 1992Assignee: Dow Corning CorporationInventors: Dimitris E. Katsoulis, Lori J. Conway, William J. Schulz, Jr.
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Patent number: 5152924Abstract: Disclosed are emulsions which do not rust or corrode steel surfaces and further do not contain rust or corrosion inhibiting additives. The emulsions encompassed in this invention are produced using mechanical or emulsion polymerization emulsification methods. The mechanically produced emulsions must contain at least one cationic surfactant containing an anion which has a parent acid with a pK.sub.a of 3 or greater. The emulsion produced using emulsion polymerization methods are produced from (A) at least one cationic surfactant containing an anion which has a parent acid with a pK.sub.a of 3 or greater; (B) a basic or strongly basic catalyst; and (C) a catalyst neutralizer selected from acids having a pK.sub.a of 3 or greater and having the capability of neutralizing the catalyst. These emulsions are useful in applications where they might come in contact with steel surfaces.Type: GrantFiled: June 1, 1990Date of Patent: October 6, 1992Assignee: Dow Corning CorporationInventor: Ronald P. Gee
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Patent number: 5118497Abstract: Novel aluminum and aluminum-zirconium salts are produced by reacting aluminum or aluminum-zirconium halohydrate with an anionic lipophilic component. These salts are useful in antiperspirant compositions or as rheological additives. Also disclosed is a novel process of producing oil-in-water emulsions whereby the novel aluminum or aluminum-zirconium salt functions as a surfactant upon forming.Type: GrantFiled: October 31, 1990Date of Patent: June 2, 1992Assignee: Dow Corning CorporationInventor: Dimitris E. Katsoulis
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Patent number: 5109094Abstract: A process for the production of an organosilicon condensation product which comprises contacting (A) at least one organosilicon compound having in the molecule at least one silicon-bonded hydroxyl group, the organic substituents being selected from monovalent hydrocarbon groups having from 1 to 14 carbon atoms and monovalent substituted hydrocarbon groups having from 1 to 10 carbon atoms in which the substituents are selected from amino, halogen, mercapto, hydroxyl, amido and ester, with (B) a hydroxide selected from the group consisting of magnesium, calcium, strontium and barium hydroxides.Type: GrantFiled: January 31, 1990Date of Patent: April 28, 1992Assignee: Dow Corning LimitedInventors: Sian B. Rees, Stephen Westall
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Patent number: 5109093Abstract: A process for the preparation of an organosilicon condensation product which comprises reacting together at a temperature of at least 50.degree. C. (A) an organosilicon compound having in the molecule at least one silicon-bonded hydroxyl group; and (B) an organosilicon compound having in the molecule at least one silicon-bonded --OX group, in which X respresents an alkyl group having from 1 to 8 carbon atoms or an alkoxyalkyl group having from 2 to 8 carbon atoms, in the presence of a catalytic substance which is selected from strontium hydroxide and barium hydroxide.Type: GrantFiled: January 31, 1990Date of Patent: April 28, 1992Assignee: Dow Corning LimitedInventors: Sian B. Rees, Stephen Westall
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Patent number: 5104576Abstract: This application relates to novel compositions of matter generally classified as alkanolamino functional siloxanes. These compositions have a structure selected from the group consisting of: ##STR1## wherein x represents an integer of from 1 to 100; y represents an integer of from 1 to 10; R.sup.1 represents a lower alkyl group; and M is an alkanolamino group selected from the group consisting of:--(CH.sub.2).sub.a N(R.sup.2)--(CH.sub.2).sub.b OR.sup.3 ; and (c)--(CH.sub.2).sub.a N.sup.+ (R.sup.2)(R.sup.4)--(CH.sub.2).sub.b OR.sup.3 Z.sup.-. (d)Compositions of this invention exhibit utility in altering the surface activity of water.Type: GrantFiled: July 26, 1990Date of Patent: April 14, 1992Assignee: Dow Corning CorporationInventor: Steven A. Snow
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Patent number: 5089300Abstract: Silyl-functional fumarates are formed through the reaction of a methyl ester of a maleate with a chloroalkyl silane or disiloxane in the presence of an amine or phosphine catalyst. These materials are useful as adhesion promoters for polyolefins.Type: GrantFiled: July 26, 1990Date of Patent: February 18, 1992Assignee: Dow Corning CorporationInventor: Edwin P. Plueddemann
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Patent number: 5087715Abstract: This application relates to novel compositions of matter generally classified as alkanolaminofunctional siloxanes. These compositions have a structure selected from the group consisting of: ##STR1## wherein x represents an integer of from 1 to 100; y represents an integer of from 1 to 10; R.sup.1 represents a lower alkyl group; and M is an alkanolamino group selected from the group consisting of:--(CH.sub.2).sub.a N(R.sup.2)--(CH.sub.2).sub.b OR.sup.3 ; (c)and--(CH.sub.2).sub.a N.sup.+ (R.sup.2)(R.sup.4)--(CH.sub.2).sub.b OR.sup.3 Z.sup.-1 (d)Compositions of this invention exhibit utility in altering the surface activity of water.Type: GrantFiled: August 7, 1989Date of Patent: February 11, 1992Assignee: Dow Corning CorporationInventor: Steven A. Snow
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Patent number: 5085858Abstract: Disclosed are thioglycolamide functional siloxanes and their salts which are prepared from the reaction between an amine-functional siloxane and thioglycolic acid or a thioglycolic ester. These materials are useful as reducing agent in the perming process. They are also useful in conditioning the hair.Type: GrantFiled: March 11, 1991Date of Patent: February 4, 1992Assignee: Dow Corning CorporationInventors: Daniel J. Halloran, Padmakumari J. Varaprath
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Patent number: 5077422Abstract: Organosilicon compounds having at least one unit of the general formula ##STR1## in which R represents alkyl, R' is a divalent alkylene, oxyalkylene, alkenylene or oxyalkenylene, Z represents an alkyl, alkoxy or hydroxyl group, a has a value of 0, 1, 2, or 3 and c is 0 or 1, wherein at least one of Z and R' is linked to the multivalent aryl group via an ether linkage, are useful for absorbing UV radiation. Especially if polymeric (with e.g. diorganosiloxane units) they can be incorporated in sunscreen preparations to improve their substantivity to the skin. A process for preparing the compounds is also disclosed.Type: GrantFiled: November 6, 1989Date of Patent: December 31, 1991Assignee: Dow Corning LimitedInventors: Andre R. L. Colas, Stephen E. Cray, Georg Frater
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Patent number: 5073593Abstract: According to this invention, a microemulsion of an organopolysiloxane containing cyclohexylamino groups is prepared as follows: component (A), an organopolysiloxane containing cyclohexylamino groups and component (B), a nonionic surfactant and component (C), ethylene glycol or propylene glycol are blended. Formic acid or acetic acid, component (D) and water, component (E), are then added. The mixture is then stirred to form an emulsion precursor liquid, which is then dispersed in a prescribed amount of water. The microemulsion of the organopolysiloxane containing cyclohexylamino groups prepared using the method of this invention has an excellent shelf stability.Type: GrantFiled: June 13, 1990Date of Patent: December 17, 1991Assignee: Dow Corning Toray Silicone Company, LTD.Inventors: Masaru Ozaki, Isao Ona
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Patent number: 5073618Abstract: Process for the production of organosilicon condensation products which comprises contacting (A) at least one organosilicon compound having in the molecule at least one silanol group, the organic substituents being selected from monovalent hydrocarbon groups having from 1 to 14 carbon atoms and monovalent substituted hydrocarbon groups having from 1 to 10 carbon atoms, and (B) a borate or phosphate of sodium or potassium.The condensation products find application in, for example textile treatments and paper coating.Type: GrantFiled: January 31, 1990Date of Patent: December 17, 1991Assignee: Dow Corning LimitedInventor: Stephen Westall