Patents Represented by Attorney Alan Zombeck
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Patent number: 7875673Abstract: An aqueous siloxane resin containing emulsion is prepared by: (i) adding water, at least one nonionic surfactant, optionally adding an ionic surfactant, and a catalyst, to a reaction vessel, and heating the contents of the vessel to form a mixture; (ii) adding to the mixture at least one silane monomer of the formula RSi(OR?)3; (iii) optionally, adding to the mixture, silane monomers of the formula R2Si(OR?)2 or R3SiOR?; (iv) allowing the silane monomer to hydrolyze and condense by a polymerization reaction in the catalyzed aqueous mixture; (v) terminating the reaction by neutralizing the mixture; and (vi) recovering from the mixture a siloxane resin emulsion containing a siloxane resin.Type: GrantFiled: June 17, 2005Date of Patent: January 25, 2011Assignee: Dow Corning CorporationInventors: Ronald Paul Gee, Yihan Liu
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Patent number: 7875694Abstract: Sulfonate functional siloxane compositions, methods of their preparation, emulsion compositions containing them are disclosed. The compositions are useful in a variety of personal, household, healthcare formulations, as well as fabric and textile treatments.Type: GrantFiled: November 18, 2005Date of Patent: January 25, 2011Assignee: Dow Corning CorporationInventors: John Joseph Kennan, Michael Kang-Jen Lee
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Patent number: 7855264Abstract: Polymeric products are disclosed that are suitable for application to fibrous substrates such as textiles, leather and paper, to impart oil (oleophobicity) and water repellent (hydrophobicity) properties to the treated material. The polymeric products comprise an amino-functional polysiloxane bonded through its amino groups to an addition copolymer of a fluoro-substituted alkyl ester of an olefinically unsaturated carboxylic acid and an olefinically unsaturated monomer having a functional group capable of reacting with the amino groups of polysiloxane and optionally one or more olefinically unsaturated comonomers.Type: GrantFiled: November 20, 2009Date of Patent: December 21, 2010Assignee: Dow Corning CorporationInventor: Peter Hupfield
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Patent number: 7807067Abstract: The treatment of textiles by a fluoropolymer-branched silicone polyether composition is disclosed. The fluoropolymer-branched silicone polyether compositions are prepared by combining a fluoropolymer and a branched silicone polyether. The resulting compositions improve the hand or feel of the fabric without significantly diminishing oil repellency nor the stain release properties associated with fluoropolymers. The branched silicone polyethers can be used alone to improve the feel of fabrics, without diminishing the hydrophilicity of the fabric.Type: GrantFiled: March 2, 2005Date of Patent: October 5, 2010Assignee: Dow Corning CorporationInventor: Fernando Vazquez
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Patent number: 7807744Abstract: An architectural coating composition is disclosed containing a silicone resin, an acrylic resin, a carrier, a pigment, a surfactant, and an optional additive. The silicone resin is a DT silicone resin, an MQ silicone resin, or an MTQ silicone resin. The carrier is water, a water compatible carrier, or a mixture of water and a water compatible carrier. The surfactant is an anionic surfactant, a nonionic surfactant, or a mixture of anionic surfactants and nonionic surfactants.Type: GrantFiled: April 10, 2006Date of Patent: October 5, 2010Assignee: Dow Corning CorporationInventors: Kathleen Barnes, Stephanie Gathman, David Plante, Lori Stark-Kasley
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Patent number: 7790827Abstract: Silicone block copolymers containing polyether-amide units, processes to prepare such silicone block copolymers, and their use in various personal care, cosmetic, household care, and healthcare formulations are disclosed.Type: GrantFiled: November 28, 2005Date of Patent: September 7, 2010Assignee: Dow Corning CorporationInventors: Kimmai Thi Nguyen, Lenin James Petroff, Maria Pretzer, Michael Starch, Kenneth Zimmerman
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Patent number: 7781556Abstract: Silicone based liquid crystal and vesicles are prepared by first reacting (A) an ?Si—H containing polysiloxane, (B) a mono-alkenyl polyether, in the presence of a platinum catalyst until an ?Si—H containing polysiloxane with polyether groups (C) is formed. The ?Si—H containing polysiloxane with polyether groups (C) is then reacted with (D) an unsaturated hydrocarbon such as an ?,?-dienes, and (E) water, in the presence of a platinum catalyst until the silicone based liquid crystal or vesicle is formed. The silicone based liquid crystal or vesicle can also be heated until a hard liquid crystal gel or vesicle paste are formed.Type: GrantFiled: July 28, 2006Date of Patent: August 24, 2010Assignee: Dow Corning CorporationInventors: Michael Richard Lafore, Zuchen Lin
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Patent number: 7781505Abstract: A process for stabilising the viscosity of an amino-functional siloxane polymer comprises adding a dialkoxydialkylsilane to the amino-functional siloxane polymer or to the reagents from which the amino-functional siloxane polymer is produced.Type: GrantFiled: June 17, 2005Date of Patent: August 24, 2010Assignee: Dow Corning CorporationInventors: Leon Cook, Sue Strange, Iain Mackinnon, Sarah O'Hare
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Patent number: 7767747Abstract: Emulsion compositions containing a silicone polymer and organic polymer as an alloy and/or hybrid emulsion can be made by (i) first forming an emulsion containing a silicone polymer by emulsion polymerization in which (a) the ring of a cyclic siloxane oligomer is opened, in which (b)an hydroxy endblocked siloxane oligomer is condensed, using an acid or base catalyst in the presence of water, or in which (c) an hydrogen endblocked siloxane oligomer and a vinyl endblocked siloxane oligomer are reacted by hydrosilylation using a catalyst; (ii) adding to the emulsion in (i) the components for preparing an emulsion containing an organic polymer by free radical emulsion polymerization of an ethylenically unsaturated organic monomer, and (iii) heating the emulsion. The resulting coalesced compositions produce polymer blends or alloys whose properties are influenced by the composition and morphology of the hybrid emulsion particles.Type: GrantFiled: October 4, 2004Date of Patent: August 3, 2010Assignee: Dow Corning CorporationInventors: David Lind, Deborah Meyers, Marilyn Shope
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Patent number: 7718727Abstract: Fluoroplastics containing fluorocarbon resins and silicones are prepared by first mixing a fluorocarbon resin with a compatibilizer, then adding a curable organopolysiloxane with a radical initiator, and vulcanizing the organopolysiloxane in the mixture. The fluoroplastics can be processed by various techniques, such as extrusion, vacuum forming, injection molding, blow molding or compression molding, to fabricate plastic parts. The resulting fabricated parts can be re-processed (recycled) with little or no degradation of mechanical properties.Type: GrantFiled: May 7, 2009Date of Patent: May 18, 2010Assignee: Dow Corning CorporationInventors: Mark Hartmann, Igor Chorvath, Lauren Tonge, Robert Oldinski, James Thompson, David Romenesko, Kermit Kwan, Stephen Warren
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Patent number: 7696293Abstract: A method of neutralizing a polysiloxane having acidic residuals is disclosed. The method involves contacting a polysiloxane having acidic residuals with a carbon solid, and separating the carbon solid from the polysiloxane. This invention is particularly useful to neutralize residual acid polymerization catalysts in organopolysiloxanes.Type: GrantFiled: April 11, 2006Date of Patent: April 13, 2010Assignee: Dow Corning CorporationInventors: Philip Adams, Thomas Fryzel, Steven Gregg, Robert Phillips
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Patent number: 7687591Abstract: This invention relates to silicone compositions suitable for forining pressure sensitive adhesives. More particularly, the present invention relates to solventless curable PSA compositions suitable for forming pressure sensitive adhesive compositions having improved high temperature cohesive strength while maintaining good tack and adhesive properties.Type: GrantFiled: March 16, 2004Date of Patent: March 30, 2010Assignee: Dow Corning CorporationInventors: Dorab Edul Bhagwagar, Loren Dean Durfee, Michael Andrew Lutz, Timothy Paul Mitchell
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Patent number: 7678301Abstract: Vesicle compositions from high molecular weight silicone polyether copolymers, methods for preparing the vesicle compositions, and personal, household, and healthcare formulations containing the vesicle compositions are disclosed.Type: GrantFiled: April 19, 2005Date of Patent: March 16, 2010Assignee: Dow Corning CorporationInventor: Shaow Lin
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Patent number: 7674764Abstract: A composition for controlled release of an active material such as a fragrance, sunscreen, vitamin or biocide in a product such as a hair shampoo, shower gel, another personal product such as an antiperspirant or deodorant, a household cleaning product such as a laundry detergent, hard surface cleaner or polishes, or a fabric softener, air freshener or tumble drier sheet, comprises a blend of the active material and a waxy cyclopolysiloxane. The cyclopolysiloxane is preferably substituted by hydrocarbon substituents having 12 or more carbon atoms and may also contain an aryl or aralkyl substituent.Type: GrantFiled: March 17, 2009Date of Patent: March 9, 2010Assignee: Dow Corning CorporationInventors: Tine Marie Leaym, Sylvie Bouzeloc, Serge Creutz
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Patent number: 7645518Abstract: Polymeric products are disclosed that are suitable for application to fibrous substrates such as textiles, leather and paper, to impart oil (oleophobicity) and water repellent (hydrophobicity) properties to the treated material. The polymeric products comprise an amino-functional polysiloxane bonded through its amino groups to an addition copolymer of a fluoro-substituted alkyl ester of an olefinically unsaturated carboxylic acid and an olefinically unsaturated monomer having a functional group capable of reacting with the amino groups of polysiloxane and optionally one or more olefinically unsaturated comonomers.Type: GrantFiled: November 12, 2004Date of Patent: January 12, 2010Assignee: Dow Corning CorporationInventor: Peter Hupfield
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Patent number: 7642326Abstract: Polymeric reaction products derived from a substituted aminosiloxane and a fluorosubstituted alkyl ester of an ethylenically carboxylic acid are disclosed. The polymeric reaction products are suitable for application to substrates such as textiles, particularly fabrics, to impart oil repellent properties to textiles.Type: GrantFiled: February 14, 2005Date of Patent: January 5, 2010Assignee: Dow Corning CorporationInventor: Peter Hupfield
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Patent number: 7592412Abstract: A release coating composition according to the present invention comprises an alkenyl functional polysiloxane (1), a silicon hydride functional polysiloxane (11) and a catalyst (111) comprising a platinum group metal. The alkenyl functional polysiloxane (1) is an alkenylterminated polysiloxane prepared by siloxane polycondensation and/or equilibration using a phosphazene base catalyst followed by neutralisation with an acidic neutralising agent. The level of catalyst (III) in the composition can be as low as 2-40 parts per million platinum group metal by weight.Type: GrantFiled: July 2, 2004Date of Patent: September 22, 2009Assignee: Dow Corning CorporationInventors: Stephen Edward Cray, Robert Alan Ekeland, Peter Cheshire Hupfield, Sarah O'Hare, David A. Rich, Marc Thibaut
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Patent number: 7553920Abstract: A method is disclosed for preparing an elastomeric 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) statically 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 fluorocarbon elastomeric compositions herein have good fuel resistance properties.Type: GrantFiled: June 1, 2005Date of Patent: June 30, 2009Assignee: Dow Corning CorporationInventor: Lauren Marie Tonge
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Patent number: 7547742Abstract: Fluoroplastics containing fluorocarbon resins and silicones are prepared by first mixing a fluorocarbon resin with a compatibilizer, then adding a curable organopolysiloxane with a radical initiator, and vulcanizing the organopolysiloxane in the mixture. The fluoroplastics can be processed by various techniques, such as extrusion, vacuum forming, injection molding, blow molding or compression molding, to fabricate plastic parts. The resulting fabricated parts can be re-processed (recycled) with little or no degradation of mechanical properties.Type: GrantFiled: June 4, 2004Date of Patent: June 16, 2009Assignee: Dow Corning CorporationInventors: Mark Hartmann, Igor Chorvath, Lauren Tonge, Robert Oldinski, James Thompson, David Romenesko, Kermit Kwan, Stephen Warren
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Patent number: 7544734Abstract: Compositions useful for providing water repellent characteristics to substrates contain (i) 0.1-99 percent by weight of a methylhydrogensiloxane; (ii) 0.1-99 percent by weight of a silanol endblocked siloxane; (iii) 0.1-99 percent by weight of a silicone resin; (iv) 0.1-10 percent by weight of at least one surface active agent; and (v) 0.01-5 percent by weight of at least one additive selected from the group consisting of a preservative, an antifoam, a mildewcide, a UV absorber/UV light stabilizer, and a freeze-thaw additive. The balance of the composition to 100 percent by weight is water.Type: GrantFiled: June 16, 2004Date of Patent: June 9, 2009Assignee: Dow Corning CorporationInventors: Donald Taylor Liles, Shawn Keith Mealey