Patents Represented by Attorney Alan Zombeck
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Patent number: 7479532Abstract: A method is disclosed for preparing an elastomeric base composition comprising: (I) mixing (A) a silicone base comprising a curable organopolysiloxane, (B) an optional crosslinking agent, (C) a cure agent in an amount sufficient to cure said organopolysiloxane; (II) mixing the product of step (I) with (D) a fluorocarbon elastomer, (E) an optional compatibilizer, (F) an optional catalyst, and (III) dynamically vulcanizing the organopolysiloxane, wherein the weight ratio of fluorocarbon elastomer (D) to silicone base (A) in the elastomeric base composition ranges from 95:5 to 30:70. The cured rubber compositions obtained from the elastomeric base compositions herein have good fuel resistance properties.Type: GrantFiled: December 13, 2004Date of Patent: January 20, 2009Assignee: Dow Corning CorporationInventor: Lauren Tonge
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Patent number: 7410695Abstract: Nylon compositions prepared by the melt mixing of a nylon thermoplastic resin and the siloxane based amide are disclosed. The modified nylons are useful in applications requiring nylons with increased hydrophobicity.Type: GrantFiled: October 24, 2003Date of Patent: August 12, 2008Assignee: Dow Corning CorporationInventors: Richard Rabe, William Blackwood, Kimmai Nguyen, Kevin Ryan
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Patent number: 7385001Abstract: High viscosity silicone compositions such as silicone gums, silicone rubbers, silicone elastomers, and silicone resins, are emulsified by mechanical inversion in which silicone water-in-oil (W/O) emulsions are inverted to silicone oil-in-water (O/W) emulsions. Silicone resins with a viscosity of about one billion centistoke (mm2/s), i.e., 1,000,000,000 centistoke (mm2/s) have been emulsified. These silicone O/W emulsions are useful in personal care products where they are capable of providing improved aesthetics. They are also useful in products used in the paper industry and medical industry. The silicone O/W emulsions are easier to handle than the high viscosity silicone in the emulsion, which enables the emulsions to mixed with other emulsions or other water-soluble ingredients.Type: GrantFiled: April 19, 2004Date of Patent: June 10, 2008Assignee: Dow Corning CorporationInventors: Anne Katja Shim, Raymond Tabler, David Tascarella
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Patent number: 7345118Abstract: A method is disclosed for preparing an elastomeric base composition comprising: (I) mixing by an extrusion process (A) a fluorocarbon elastomer with (B) an optional compatibilizer, (C) an optional catalyst (D) a silicone base comprising a curable organopolysiloxane, (E), an optional crosslinking agent (F) a cure agent in an amount sufficient to cure said organopolysiloxane; and (II) dynamically vulcanizing the organopolysiloxane, wherein the weight ratio of fluorocarbon elastomer (A) to silicone base (B) in the elastomeric base composition ranges from 95:5 to 30:70. The cured rubber compositions obtained from the elastomeric base compositions herein have good fuel resistance properties.Type: GrantFiled: June 6, 2003Date of Patent: March 18, 2008Assignee: Dow Corning CorporationInventors: Igor Chorvath, Kermit Kwan, David Romenesko, Lauren Tonge, Stephen Warren
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Patent number: 7238768Abstract: An amino-functional polysiloxane is prepared by reacting an aminosilane (A) which contains an aminoalkyl group and at least one alkoxy group bonded to Si with a carboxylic acid and a silanol-functional polysiloxane (B). The aminosilane (A) is partially converted into its carboxylate salt which acts as a catalyst for the siloxane condensation polymerization reaction between (A) and (B).Type: GrantFiled: November 21, 2006Date of Patent: July 3, 2007Assignee: Dow Corning CorporationInventors: Peter Cheshire Hupfield, Avril Surgenor, Stephen Westall
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Patent number: 7173092Abstract: A method is disclosed for preparing an elastomeric base composition comprising: (I) mixing (A) a fluorocarbon elastomer with (B) a compatibilizer, (C) an optional catalyst, (II) mixing the product of step (I) with (D) a silicone base comprising a curable organopolysiloxane, (E), an optional crosslinking agent, (F) a cure agent in an amount sufficient to cure said organopolysiloxane; and (III) dynamically vulcanizing the organopolysiloxane, wherein the weight ratio of fluorocarbon elastomer (A) to silicone base (B) in the elastomeric base composition ranges from 95:5 to 30:70. The cured rubber compositions obtained from the elastomeric base compositions herein have good fuel resistance properties.Type: GrantFiled: June 6, 2003Date of Patent: February 6, 2007Assignee: Dow Corning CorporationInventors: Gerald Gornowicz, Igor Chorvath, Lauren Tonge, Yung Kim, David Romenesko, Kermit Kwan, Stephen Warren
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Patent number: 7153902Abstract: Water-continuous emulsion of elastomeric polymers are disclosed having a solids content of greater than 75%, an average particle size less than 5 ?m, and having sufficient stability to produce a stable lower solids emulsion upon dilution with water comprising; an elastomeric polymer, surfactant, water, optional plasticizer, optional low molecular weight acid, and is essentially free of organic solvents. The water-continuous emulsions of elastomeric polymers can be prepared by; (I) forming a premix that is essentially free of organic solvents comprising an elastomeric polymer and surfactant, and optionally a plasticizer and low molecular weight acid, and (II) adding water to the premix with mixing to form a water continuous emulsion of the elastomeric polymer having a solids content of greater than 75%, an average particle size less than 5 ?m, and having sufficient stability to produce a stable lower solids emulsion upon dilution with water.Type: GrantFiled: February 17, 2004Date of Patent: December 26, 2006Assignee: Dow Corning CorporationInventors: Michael Gene Altes, Craig Steven Gross, Lee Bowen Jensen, Shaow Burn Lin, Anil Kumar Saxena, Todd Matthew Starke, Toshio Suzuki, Raymond Lee Tabler
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Patent number: 7097785Abstract: Treatment of textiles by a fluoropolymer-amino terminated polydiorganosiloxane composition is disclosed. The fluoropolymer-amino terminated polydiorganosiloxane compositions are prepared by combining a fluoropolymer and an amino terminated polydiorganosiloxane. The resulting compositions improve the hand or feel of the fabric without significantly diminishing oil repellency properties associated with fluoropolymers.Type: GrantFiled: March 15, 2005Date of Patent: August 29, 2006Assignee: Dow Corning CorporationInventor: Fernando Vazquez
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Patent number: 6900258Abstract: Water-continuous emulsion of curable elastomeric polymers are disclosed having a solids content of greater than 75%, an average particle size less than 5 ?m, and having sufficient stability to produce a stable lower solids emulsion upon dilution with water comprising; a curable elastomeric polymer, surfactant, internal cure additive, water, optional plasticizer, and optional low molecular weight acid. The water-continuous emulsions of curable elastomeric polymers can be prepared by; (I) forming a premix comprising an elastomeric polymer, surfactant, and internal cure additive, and (II) adding water to the premix with mixing to form a water continuous emulsion of the curable elastomeric polymer having a solids content of greater than 75%, an average particle size less than 5 ?m, and having sufficient stability to produce a stable lower solids emulsion upon dilution with water.Type: GrantFiled: July 2, 2002Date of Patent: May 31, 2005Assignee: Dow Corning CorporationInventors: Shaow Burn Lin, Anne Katja Shim, Todd Matthew Starke
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Patent number: 6887934Abstract: Resin modified elastomers, methods of making them and their uses. The method for making the elastomers comprises reacting in a diluent an ?SiH functional siloxane; a diene, diyne or ene-yne compound, a resin having the formula (R13SiO1/2)x(SiO4/2)y(R1SiO3/2)z where each R1 is independently a monovalent hydrocarbon group having 1 to 30 carbon atoms or an unsaturated hydrocarbon group having 2 to 30 carbon atoms x is ?1, y?0, z?0 and y+z?1.Type: GrantFiled: August 26, 2002Date of Patent: May 3, 2005Assignee: Dow Corning CorporationInventors: Michael Salvatore Ferritto, Tina Marie Leaym, William James Schulz, Jr., Janet Mary Smith
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Patent number: 6878773Abstract: In a process for the preparation of an emulsion of a silicone organic block copolymer in water, a polydiorganosiloxane having terminal reactive groups (A), an organic material having terminal groups (B) which are reactive with the groups (A) and a catalyst are emulsified in water with a surfactant and the resulting emulsion is subjected to conditions under which the reaction between groups (A) and (B) proceeds in the presence of the catalyst, thereby forming a copolymer chain containing polysiloxane blocks and blocks of organic material. Preferred emulsions comprise a copolymer comprising polydiorganosiloxane blocks and organic blocks, having a viscosity in the range 10 to 1000000 Pa.s and a mean particle size of 0.3 to 1000 micrometers.Type: GrantFiled: January 30, 2001Date of Patent: April 12, 2005Assignee: Dow Corning S.A.Inventors: Leon Andre Marteaux, Anne-Lise Girboux
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Patent number: 6861061Abstract: A water-in-oil (W/O) emulsion with a discontinuous aqueous phase dispersed in a continuous oil phase has in the continuous oil phase a linear silicone polyether, an ?,?-diene crosslinked silicone elastomer, and a nonionic organic emulsifier. The W/O emulsion is otherwise free of silicone elastomers prepared using unsaturated compounds containing silicon atoms. Either the discontinuous aqueous phase of the W/O emulsion or the continuous oil phase of the W/O emulsion contains a water soluble or oil soluble active ingredient such as a vitamin.Type: GrantFiled: December 19, 2001Date of Patent: March 1, 2005Assignee: Dow Corning CorporationInventors: Bartley Dean Maxon, Michael Stephen Starch
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Patent number: 6831128Abstract: Water-continuous emulsion of silylated elastomeric polymers are disclosed having a solids content of greater than 75%, an average particle size less than 5 &mgr;m, and having sufficient stability to produce a stable lower solids emulsion upon dilution with water comprising; a silylated elastomeric polymer, surfactant, water, optional plasticizer, and optional low molecular weight acid. The water-continuous emulsions of silylated elastomeric polymers can be prepared by; (I) forming a premix comprising an elastomeric polymer and surfactant, and optionally a plasticizer and low molecular weight acid, and (II) adding water to the premix with mixing to form a water continuous emulsion of the silylated elastomeric polymer having a solids content of greater than 75%, an average particle size less than 5 &mgr;m, and having sufficient stability to produce a stable lower solids emulsion upon dilution with water.Type: GrantFiled: July 2, 2002Date of Patent: December 14, 2004Assignee: Dow Corning CorporationInventors: Michael Gene Altes, Lee Bowen Jensen, Shaow Burn Lin, Anil Kumar Saxena, Anne Katja Shim, Todd Matthew Starke, Toshio Suzuki
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Patent number: 6825263Abstract: A curable coating composition comprises: (A) a water continuous emulsion comprising a curable elastomeric polymer having a viscosity of 0.5-1,000,000 KPa-s and a glass transition temperature up to 50° C.; (B) an aqueous polyurethane dispersion; and optionally, (C) a cure agent. Methods for preparing the curable coating compositions are also disclosed. The curable coating composition and the cured coatings derived from the reaction product of this composition are useful as fabric coatings, and in particular for decreasing air permeability of the coated fabrics at relatively lower coating weights.Type: GrantFiled: December 17, 2002Date of Patent: November 30, 2004Assignee: Dow Corning CorporationInventors: Shaow Burn Lin, Anne Katja Shim, David Shawn Tascarella
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Patent number: 6803399Abstract: Silicone liquid crystals, silicone vesicles, and silicone gels are formed by combining (i) an amine functional silicone or an organic amine compound, (ii) an organic epoxide containing at least two epoxy groups or an epoxy functional silicone containing at least two epoxy groups, and (iii) a fluid such as water, a silicone fluid other than a silicone used in (i) and (ii), and a polar organic compound or nonpolar organic compound other than organic compounds used in (i) and (ii) in which the polar and nonpolar organic compound are present at a concentration to provide a level of solids less than 40 percent by weight based on the weight of (i)-(iii). These silicone liquid crystals, silicone vesicles, and silicone gels are useful in personal care for preparing various skin, hair, and underarm products.Type: GrantFiled: June 19, 2003Date of Patent: October 12, 2004Assignee: Dow Corning CorporationInventors: Michael Salvatore Ferritto, Zuchen Lin, William James Schulz, Jr.
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Patent number: 6800713Abstract: Methods for making silicone-organic copolymers are disclosed involving the manipulation of polymerization chain terminators allowing for polymer molecular weight control.Type: GrantFiled: May 15, 2002Date of Patent: October 5, 2004Assignee: Dow Corning CorporationInventors: Leon Neal Cook, Jodi Lynnette Jibben, Kimmai Thi Nguyen, Lenin James Petroff, Jay Brian Rose, Julie Ann Hayes
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Patent number: 6794042Abstract: The present invention teaches a composition which provides gas, flavor, and aroma barrier to substrates, where the composition is formed by mixing an ethylenically unsaturated acid and a polyamine, wherein said polyamine optionally has a crosslinker reacted therein, and wherein said polyamine has four or more A, B, or C units, where: A is an —R2—N(R1)2 unit, B is an —R1—N(R2—)2 unit, and C is an (—R2)3N— unit, where: R1 is independently selected from hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, and alkylaryl, and R2 is independently selected from the group consisting of: linear or branched alkylene groups or substituted alkylene groups having from 1 to 18 carbon atoms, and arylene groups or substituted arylene groups having from 6 to 18 carbon atoms. The composition is coated on a substrate then optionally treated to initiate a free radical reaction.Type: GrantFiled: December 17, 1999Date of Patent: September 21, 2004Assignees: EG Technology Partners, L.P., UCB Films PLC, Star House, Dow Corning CorporationInventors: Patrick J. Merlin, John E. Wyman, Imtiaz Rangwalla, Daniel Futter, Gary Power, Karen Branch
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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: 6770708Abstract: This invention is directed to an elastomer composition produced by crosslinking a high molecular weight ≡Si—H containing polysiloxane and a diene, diyne or ene-yne compound in the presence of a diluent. The elastomer composition is suitable for use in forming personal care compositions.Type: GrantFiled: August 27, 2002Date of Patent: August 3, 2004Assignee: Dow Corning CorporationInventors: Donald Anthony Kadlec, Zuchen Lin, William James Schulz, Jr., Janet Mary Smith, Michael Stephen Starch, Shizhong Zhang
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Patent number: 6759487Abstract: Re-processable thermoplastic elastomer composition comprising (A) a thermoplastic polyurethane polymer, and (B) a silicone elastomer, wherein the weight ratio of the silicone elastomer to the thermoplastic polyurethane polymer is from 5:95 to 85:15, are disclosed along with methods for making such compositions.Type: GrantFiled: October 23, 2002Date of Patent: July 6, 2004Assignee: Dow Corning CorporationInventors: Gerald Alphonse Gornowicz, Craig Steven Gross, Mark Daniel Hartmann, Jun Liao, Jeffrey Paul Sage, Gifford Neale Shearer, Thomas John Tangney