Patents Represented by Attorney, Agent or Law Firm Timothy J. Troy
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Patent number: 6162330Abstract: A method for restricting air entrapment in white water of a paper making process is described, which comprises adding to said white water a polysiloxane having an Si--C bonded substituent with at least one ether or alcohol oxygen. Preferably certain siloxane oxyalkylene copolymers or certain siloxane oxyalcohols are used.Type: GrantFiled: February 22, 2000Date of Patent: December 19, 2000Assignee: Dow Corning S.A.Inventors: Christina Northfleet, Franck Renauld
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Patent number: 6162888Abstract: The present invention relates to a method of making a silicone polyether comprising (I) reacting a mixture comprising an olefin functional polyether, an organohydrogensiloxane, and a homogeneous transition metal hydrosilylation catalyst, and (II) subjecting the product of (I) to hydrogen gas. The method of this invention reduces the amount of olefinic species present which are precursors to odorous compounds. Thus the method of this invention reduces the amount of odor in the silicone polyether product. These odors are objectionable, particularly in personal care applications.Type: GrantFiled: May 17, 1999Date of Patent: December 19, 2000Assignee: Dow Corning CorporationInventors: Kenneth Michael Lee, Lenin James Petroff, William James Schulz, Jr.
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Patent number: 6153569Abstract: This invention relates to the use of aminofunctional silicone microemulsions to make optically clear compositions. More particularly this invention is directed to optically clear shampoo compositions comprising (A) an aminofunctional silicone microemulsion having an average particle size of less than 0.06 microns, (B) at least one anionic detersive surfactant, (C) at least one foam boosting agent, (D) at least one pH adjusting agent, (E) at least one thickening agent, and (F) water. The optically clear silicone compositions of this invention are useful in the hair care industry, especially as shampoos.Type: GrantFiled: July 24, 1998Date of Patent: November 28, 2000Assignee: Dow Corning CorporationInventor: Daniel Joseph Halloran
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Patent number: 6147038Abstract: This invention relates to the use of aminofunctional silicone microemulsions to make optically clear hair conditioning compositions. More particularly this invention is directed to optically clear hair conditioning compositions comprising an aminofunctional microemulsion, at least one long-chain quaternary amine salt, and water. The optically clear silicone compositions of this invention are useful in the hair care industry, especially as hair conditioners.Type: GrantFiled: July 24, 1998Date of Patent: November 14, 2000Assignee: Dow Corning CorporationInventor: Daniel Joseph Halloran
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Patent number: 6140525Abstract: This invention relates to a macromonomer and a method for its preparation. The macromonomer has silicon-bonded hydrogen atoms at one molecular chain terminal, and aliphatically unsaturated silicon-bonded organic groups at the other molecular chain terminal. This invention further related to a method of forming a hyperbranched polymer by polymerizing the macromonomer with a group VIII metal catalyst. The hyperbranched polymers can be used as surfactants, gelling agents, drug delivery systems, and polymeric absorbents.Type: GrantFiled: December 21, 1998Date of Patent: October 31, 2000Assignees: Russian Academy of Sciences, Dow Corning Corporation, Dow Corning Toray Silicone Co.Inventors: Tadashi Okawa, Aziz Muzafarov, Stephen Cray
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Patent number: 6136896Abstract: This invention relates to graft copolymers containing polydiorganosiloxane and polybutylene grafts. More particularly this invention relates to a graft copolymer having a backbone and two or more polymeric side chains, the copolymer formed from the copolymerization of at least one acryloxyalkyl-functional polydiorganosiloxane macromonomer, at least one acryl-terminated, carboxyl-functional polybutylene macromonomer, and at least one ethylenically unsaturated monomer which is copolymerizable with the polydiorganosiloxane and polybutylene macromonomers. This invention also relates to a method of making graft copolymers containing polydiorganosiloxane and polybutylene grafts.Type: GrantFiled: December 21, 1998Date of Patent: October 24, 2000Assignee: Dow Corning CorporationInventors: Michael Kang-Jen Lee, Kenneth M. Lee, Deborah Lynn Meyers
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Patent number: 6136917Abstract: The compositions of the present invention consist essentially of (I) a reaction product, (II) a nonaqueous liquid continuous phase, and (III) a moderately hydrophobic particulate stabilizing aid. Component (I) is prepared by heating a mixture of (i) a polyorganosiloxane fluid, (ii) a silicon compound, (iii) a finely divided filler and (iv) a catalytic amount of a compound for promoting the reaction of components (i) to (iii) at a temperature of 50.degree. C. to 300.degree. C. The compositions of the present invention can additionally contain (IV) at least one nonionic silicone surfactant, and (V) a nonreinforcing inorganic filler.Type: GrantFiled: July 22, 1993Date of Patent: October 24, 2000Assignee: Dow Corning CorporationInventors: Steven Patrick Christiano, Gregory Gerald Bausch, Lauren Marie Tonge, Sharon Kay McCoy, Elizabeth Fiona Mallen, Roger Jeffery Jones, Athanasios Surutzidis, Andrew Albon Fisk
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Patent number: 6136215Abstract: A fiber treatment composition is disclosed. The composition contains siloxanes having amine-, polyol, and amide-functionalities. The composition provides good hand, resistance to yellowing, and hydrophilicity to the fibers. The composition is preferably formulated as an aqueous emulsion. Applying the composition to textile fabrics produces treated fabrics having good hydrophilicity, good hand, and resistance to yellowing.Type: GrantFiled: September 2, 1999Date of Patent: October 24, 2000Assignees: Dow Corning Corporation, Dow Corning, LimitedInventors: Martin John Evans, Howard Edwin Griffin, Linda Denise Kennan, Michael Ward Skinner, Kenneth Edward Zimmerman
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Patent number: 6124419Abstract: This invention relates to a release modifier composition comprising an alkenyl functional polyorganosiloxane and a branched olefin. This invention further relates to the use of the release modifier composition in silicone release coating emulsions and solventless silicone release coating compositions. The silicone release coating compositions of this invention are useful in release pressure sensitive adhesives from a variety of substrates.Type: GrantFiled: August 14, 1998Date of Patent: September 26, 2000Assignees: Dow Corning, Limited, Dow Corning CorporationInventors: Stephen Armstrong, Loretta Ann Jones, David Andrew Rich
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Patent number: 6090902Abstract: This invention relates to organopolysiloxane-modified graft copolymers obtained by a method comprising heating a mixture comprising an ethylenically unsaturated monomer, a polyethylene-polybutylene macromonomer, an organopolysiloxane macromonomer, a free radical initiator, and optionally a solvent. The copolymers of this invention find utility in adhesives such as pressure sensitive adhesives, contact adhesives. laminating adhesives, and assembly adhesives, and release coatings.Type: GrantFiled: December 21, 1998Date of Patent: July 18, 2000Assignee: Dow Corning CorporationInventors: Chung Mien Kuo, Donald Taylor Liles
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Patent number: 6075087Abstract: This invention relates to resin-fillers and compositions containing the resin-fillers. Resin-fillers are the reaction product of a resin having monofunctional siloxane (M) units and tetrafunctional siloxane (Q) units, chemically linked to a crosslinker by addition reaction. The resin-fillers have properties more similar to those of silica fillers and less like those of conventional MQ resins. The resin-fillers are insoluble in solvents, form homogeneous blends with silicone polymers, and dramatically impact modulus and viscosity of a polymer even at low (e.g. 5 to 10 wt %) loading.Type: GrantFiled: December 31, 1998Date of Patent: June 13, 2000Assignee: Dow Corning CorporationInventors: Donnie Ray Juen, Bianxiao Zhong
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Patent number: 6074470Abstract: This invention relates to a stable aqueous silane emulsion with constant particle size. The emulsion comprises a continuous water phase, a discontinuous silane phase, and an emulsifier system. The emulsifier system contains a primary surfactant and a cosurfactant. The primary surfactant functions to prevent coalescence of particles, by steric or ionic repulsion between particles. The cosurfactant prevents diffusion of the silane into the aqueous phase. The combination of primary surfactant and cosurfactant results in an adsorbed inner layer of cosurfactant between the silane and the outer layer of a mixture of both surfactants which contacts the water phase. The combination of primary surfactant and cosurfactant provides a barrier which prevents diffusion of silane into the water phase. A method for preparing the emulsion is also disclosed.Type: GrantFiled: December 10, 1998Date of Patent: June 13, 2000Assignee: Dow Corning CorporationInventors: Paul David Fisher, Ronald Paul Gee
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Patent number: 6072012Abstract: An ultra-high molecular weight MQ resin and a method for its preparation are disclosed. The ultra-high molecular weight MQ resin has weight average molecular weight of at least 100,000, and the ultra-high molecular weight MQ resin is soluble in organic solvents.Type: GrantFiled: December 31, 1998Date of Patent: June 6, 2000Assignee: Dow Corning CorporationInventors: Donnie Ray Juen, Bianxiao Zhong
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Patent number: 6069185Abstract: This invention relates to radiation curable compositions comprising an alkenyl ether functional polyisobutylene, a cationic photoinitiator, a free radical photoinitiator, and an alkenyl ether compound which is free of isobutylene units. The radiation curable compositions can further comprise an alkylphenol. This invention also relates to hydrocarbon silicone alkenyl ether compounds. The radiation curable compositions exhibit a low cure energy, have a high moisture vapor barrier, high damping characteristics, and a high refractive index, and provide a barrier to corrosive vapors and have maintained or enhanced modulus, tensile strength, and toughness.Type: GrantFiled: November 25, 1998Date of Patent: May 30, 2000Assignees: Dow Corning Asia, Ltd., Dow Corning CorporationInventors: Maneesh Bahadur, Toshio Suzuki
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Patent number: 6054549Abstract: This invention relates to alkenyl ether functional polyisobutylenes. This invention also relates to a method of making alkenyl ether functional polyisobutylene polymers comprising reacting a mixture comprising an alkoxysilyl-functional polyisobutylene polymer, an alkenyl ether compound, and a transesterification catalyst. This invention also relates to a method of making an alkenyl ether functional polyisobutylene polymer comprising reacting a mixture comprising a polyisobutylene containing at least one hydrolyzable group, an alkenyl ether compound, and a solvent. The alkenyl ether functional polyisobutylenes of this invention have high moisture vapor barrier, high damping characteristics, and a high refractive index.Type: GrantFiled: November 25, 1998Date of Patent: April 25, 2000Assignees: Dow Corning Asia, Ltd., Dow Corning CorporationInventors: Maneesh Bahadur, Toshio Suzuki
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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: 6040353Abstract: This invention relates to a radiation curable silicone compositions. More particularly this invention relates to radiation curable silicone compositions comprising a vinyl ether functional silicon compound, a cationic photoinitiator, a free radical photoinitiator, and dodecylphenol. The compositions of this invention can further comprise a vinyl ether compound which is free of silicon atoms. The radiation curable silicone compositions of this invention are useful as release coating compositions which are especially suitable for release of pressure sensitive adhesives.Type: GrantFiled: November 25, 1998Date of Patent: March 21, 2000Assignee: Dow Corning CorporationInventors: Shedric Oneal Glover, Chi-long Lee, Wen-hong Tong
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Patent number: 6040395Abstract: This invention relates to a primer that improves adherence of a cured resin sealant to a cured silicone coating on an electrical element, wherein said primer is selected from the group consisting of:(i) a mixture of components (a) and (b),(ii) a reaction mixture of components (a) and (b),(iii) component (c),(iv) component (c) and a mixture of components (a) and (b), and(v) component (c) and a reaction mixture of components (a) and (b),where component (a) is silanol-functional organopolysiloxane; component (b) is epoxy-functional organoalkoxysilane; and component (c) is organopolysiloxane with the average unit formula: (R.sup.1 SiO.sub.3/2).sub.a (R.sup.2.sub.2 SiO.sub.2/2).sub.b (R.sup.2.sub.3 SiO.sub.1/2).sub.c (R.sup.3 O.sub.1/2).sub.dwhere R.sup.1 is an epoxy-functional monovalent organic group; each R.sup.2 is independently a monovalent hydrocarbon group, R.sup.Type: GrantFiled: May 21, 1999Date of Patent: March 21, 2000Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Minoru Isshiki, Katsutoshi Mine, Kimio Yamakawa
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Patent number: 6028124Abstract: This invention relates to a radiation curable compositions. More particularly this invention relates to radiation curable compositions comprising a vinyl ether compound which is free of silicon atoms, a cationic photoinitiator, a free radical photoinitiator, and dodecylphenol. The radiation curable compositions of this invention are useful for coating a thin layer film that has potential for many applications in the coating industry.Type: GrantFiled: November 25, 1998Date of Patent: February 22, 2000Assignee: Dow Corning CorporationInventors: Shedric Oneal Glover, Chi-long Lee, Wen-hong Tong
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Patent number: 6017587Abstract: The present invention relates to electrically conductive silicone compositions comprising an organopolysiloxane containing at least two alkenyl groups per molecule, an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule, a platinum group metal containing catalyst, a conductive metal particulate, a precrosslinked elastomeric silicone particle, and a non-reactive volatile diluent. The electrically conductive silicone compositions of this invention are useful as electrically conductive adhesives and coatings for electrical and electronic devices. The cured electrically conductive silicone compositions of this invention have high electroconductivity and rubbery elasticity.Type: GrantFiled: July 9, 1998Date of Patent: January 25, 2000Assignees: Dow Corning Corporation, Dow Corning Toray Silicone Co., Ltd.Inventors: Don Lee Kleyer, Michael Andrew Lutz, Katsutoshi Mine, Osamu Mitani, Kazumi Nakayoshi, Bernard Vanwert