The Continuous Phase Contains A Propellant Derived From Non-gaseous Phase (e.g., Liquified Propellant, Such As Hydrocarbon, Halogenated Hydrocarbon, Dimethylether; Sorbed Or Dissolved Co2) Patents (Class 516/8)
  • Publication number: 20130126776
    Abstract: The invention provides a heat transfer composition comprising (i) a first component selected from trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), cis-1,3,3,3-tetrafluoropropene (R-1234ze(Z)) and mixtures thereof; (ii) carbon dioxide (R-744); and (iii) a third component selected from propylene (R-1270), propane (R-290), n-butane (R-600), isobutane (R-600a), and mixtures thereof.
    Type: Application
    Filed: May 20, 2011
    Publication date: May 23, 2013
    Applicant: Mexichem Amanco Holding S.A. de C.V.
    Inventor: Robert E. Low
  • Publication number: 20130126777
    Abstract: The invention provides a heat transfer composition comprising (i) a first component selected from trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), cis-1,3,3,3-tetrafluoropropene (R-1234ze(Z)) and mixtures thereof; (ii) carbon dioxide (R-744); and (iii) a third component selected from 1,1-difluoroethane (R-152a), fluoroethane (R-161), and mixtures thereof.
    Type: Application
    Filed: May 20, 2011
    Publication date: May 23, 2013
    Applicant: Mexichem Mnco Holding S.A. de C.V.
    Inventor: Robert E. Low
  • Publication number: 20130119292
    Abstract: Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of Z-1,1,1,4,4,4-hexafluoro-2-butene, trans-1,2-dichloroethylene and 1,1,1,3,3-pentafluorobutane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing afire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.
    Type: Application
    Filed: January 10, 2011
    Publication date: May 16, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Mark Robin, Joan Ellen Bartelt
  • Publication number: 20130119299
    Abstract: The invention provides a heat transfer composition comprising (i) a first component selected from trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), cis-1,3,3,3-tetrafluoropropene (R-1234ze(Z)) and mixtures thereof; (ii) carbon dioxide (R-744); and (iii) a third component selected from difluoromethane (R-32) 1,1,1,2-tetrafluoroethane (R-134a) and mixtures thereof.
    Type: Application
    Filed: May 20, 2011
    Publication date: May 16, 2013
    Applicant: MEXICHEM AMANCO HOLDING SA DE CV
    Inventor: Robert E. Low
  • Publication number: 20130109771
    Abstract: The present invention relates, in part, to azeotrope and azeotrope-like mixtures consisting essentially of consisting essentially of cis-1-chloro-3,3,3-trifluoropropene and a second component selected from the group water, hexane, HFC-365mfc, and perfluoro(2-methyl-3-pentanone).
    Type: Application
    Filed: December 20, 2012
    Publication date: May 2, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: HONEYWELL INTERNATIONAL INC.
  • Publication number: 20130078191
    Abstract: There is provided an aerosol composition which is high in fire safety and assures easy emulsification of an aqueous concentrate and a liquefied gas. The aerosol composition comprises 10 to 60 wt % of an aqueous concentrate and 40 to 90 wt % of a liquefied gas, and is obtained by emulsifying the aqueous concentrate and the liquefied gas, wherein the liquefied gas comprises a heavy liquefied gas (a) having a liquid density at 20° C. of from 1.15 to 1.30 (g/ml).
    Type: Application
    Filed: June 13, 2011
    Publication date: March 28, 2013
    Applicant: DAIZO CORPORATION
    Inventors: Keiichiro Teramoto, Fuminori Okano, Atsushi Wagamitsu
  • Publication number: 20130004435
    Abstract: The present invention relates, in part, to ternary azeotropic compositions and mixtures including chlorotrifluoropropene, methanol, and a third component selected from isohexane, trans-1,2-dichloroethylene, and petroleum ether. The present invention further relates to ternary azeotropic compositions and mixtures including chlorotrifluoropropene, cyclopentane, and a alcohol selected from methanol, ethanol, and isopropanol.
    Type: Application
    Filed: August 23, 2012
    Publication date: January 3, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Kane D. COOK, Rajat S. BASU, Ryan HULSE
  • Publication number: 20120309824
    Abstract: Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of E-1,1,1,4,4,4-hexafluoro-2-butene and ethylene oxide. Also disclosed are double azeotropic compositions of E-1,1,1,4,4,4-hexafluoro-2-butene and ethylene oxide. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions.
    Type: Application
    Filed: February 25, 2011
    Publication date: December 6, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Mark L. Robin, Ralph Newton Miller
  • Publication number: 20120305830
    Abstract: The invention provides a heat transfer composition consisting essentially of from about 45 to about 58% by weight trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)) and from about 42 to about 55% by weight of 1,1-difluoroethane (R-152a). The invention also provides a heat transfer composition comprising from about 40 to about 60% by weight R-152a, from about 5 to about 50% R-134a, and from about 5 to about 50% by weight R-1234ze(E).
    Type: Application
    Filed: February 14, 2011
    Publication date: December 6, 2012
    Applicant: Mexichem Amanco Holdings S.A. de C.V.
    Inventor: Robert E. Low
  • Publication number: 20120305480
    Abstract: The invention provides a heat transfer composition consisting essentially of from about 62 to about 78% by weight trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)) and from about 22 to about 38% by weight of 1,1-difluoroethane (R-152a). The invention also provides a heat transfer composition comprising from about 20 to about 40% by weight R-152a, from about 5 to about 55% R-134a, and from about 5 to about 75% by weight R-1234ze(E).
    Type: Application
    Filed: February 14, 2011
    Publication date: December 6, 2012
    Applicant: Mexichem Amanco Holdings S.A de C.V.
    Inventor: Robert E. Low
  • Publication number: 20120298909
    Abstract: The invention provides a heat transfer composition comprising (i) from about 45 to about 75% by weight 2,3,3,3-tetrafluoropropene (R-1234yf); and (ii) from about 25 to about 55% by weight 1,1,1,2-tetrafluoroethane (R-134a). A heat transfer composition comprising, optionally consisting essentially of, (i) from about 20 to about 90% by weight R-1234yf; (ii) from about 10 to about 60% by weight R-134a; and (iii) from about 1 to about 20% by weight R-32 is also provided.
    Type: Application
    Filed: April 16, 2010
    Publication date: November 29, 2012
    Applicant: MEXICHEM AMANCO HOLDING S.A. de C.V.
    Inventor: Robert E. Low
  • Publication number: 20120251521
    Abstract: The present invention is a solution or colloid of fullerene, SWNTs, or graphene in cyclic terpenes, lactones, terpene-alcohol, fatty-acid alcohols, and lactones following ultrasonication and ultracentrifugation processing, for oil-energy, biological, electrical-thermal applications. The compositions are useful as fuel/oil/grease/gels (synthetic included), oil/fuel/additives/propellants, identification dyes, and heat-transfer fluids. Other functions are phase-change fluids for solar energy power plants, antifreeze, electronic dyes, electrolytic fluid/solvent, electrically-thermally conductive material for electrochemical, dielectric, filler/adhesive for semiconductor, eletro-optical, and liquid crystal substrates/coatings for touch sensitive transmissive or reflective displays. When combined with gelatin the formulations can function as dichroic-optical coatings for thin-films/waveguides/holograms.
    Type: Application
    Filed: April 2, 2011
    Publication date: October 4, 2012
    Inventors: Bertha Rostro, Mehdie Kohanloo
  • Patent number: 8207085
    Abstract: A photocatalytic coating composition comprising photocatalytic titanium oxide, silver, copper and a quaternary ammonium hydroxide. The photocatalytic coating composition may include a photocatalytic titanium oxide sol dispersed in a binder. Furthermore, a photocatalytic member includes a substrate having a surface coated with the photocatalytic coating composition. The photocatalyst coating composition can contain highly antibacterial silver by skillfully utilizing copper and a quaternary ammonium hydroxide, and accordingly can show an antibacterial effect not only in a dark place simply due to silver, but also a higher antibacterial effect in a conventional application of employing ultraviolet sterilization by concomitantly using the photocatalyst titanium oxide sol according to the present invention and an ultraviolet sterilizer.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: June 26, 2012
    Assignees: Taki Chemical Co., Ltd., Toto Ltd.
    Inventors: Taketoshi Kuroda, Hiroyuki Izutsu, Isamu Yamaguchi, Yoshiyuki Nakanishi
  • Publication number: 20120138846
    Abstract: Provided are azeotrope or azeotrope-like compositions comprised of 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) and 1,1-dichloro-2,2,2-trans-trifluoroethane (HCFC-123).
    Type: Application
    Filed: August 13, 2009
    Publication date: June 7, 2012
    Applicant: Arkema Inc.
    Inventors: Brett L. Van Horn, Philippe Bonnet, Benjamin bin Chen
  • Publication number: 20120138847
    Abstract: The present invention relates to azeotrope and azeotrope-like compositions comprised of 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) and 1,1,1,2,3-pentafluoropropane (HFC-245eb), and uses thereof.
    Type: Application
    Filed: August 11, 2010
    Publication date: June 7, 2012
    Applicant: Arkema, Inc.
    Inventors: Brett L. Van Horn, Philippe Bonnet, Laurent Abbas
  • Publication number: 20120085959
    Abstract: Use of certain hydrofluoroalkenes for foam blowing, solvent cleaning, refrigeration, as etching gas for semiconductor etching or chamber cleaning, heat transfer, fire extinguishing and for the production of aerosols.
    Type: Application
    Filed: March 5, 2010
    Publication date: April 12, 2012
    Applicant: SOLVAY FLUOR GMBH
    Inventors: Ercan Uenveren, Christoph Meurer
  • Patent number: 7879757
    Abstract: A photocatalytic titanium oxide sol presents antibacterial properties in a dark place, and, in particular, relates to a photocatalytic titanium oxide sol which is stable and causes no discoloration by light even though containing silver, and relates to a coating composition and a member using the same. The photocatalytic titanium oxide sol includes silver, copper and a quaternary ammonium hydroxide, may be dispersed in a binder, and may be coated on the surface of a substrate.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: February 1, 2011
    Assignees: Taki Chemical Co., Ltd., Toto Ltd.
    Inventors: Taketoshi Kuroda, Hiroyuki Izutsu, Isamu Yamaguchi, Yoshiyuki Nakanishi
  • Patent number: 7875657
    Abstract: The present invention relates to a composition based on trans-1,2-dichloroethylene. A subject-matter of the invention is more particularly a nonflammable composition comprising trans-1,2-dichloroethylene and at least two hydrofluorocarbons and its uses.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: January 25, 2011
    Assignee: Arkema France
    Inventors: Laurent Latil, Vincent Enaux
  • Patent number: 7713365
    Abstract: An adhesive composition of between 10-70% by weight of a latex emulsion, between 30-80% by weight of an acrylic, between 0.05-5% by weight of a surfactant, and between 1-50% by weight of water, and an adhesive application system for applying the adhesive composition having the adhesive, a propellant, a pressure container for containing the adhesive and the propellant under pressure, and a valve system to regulate the flow of the adhesive and propellant out of the pressure container.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: May 11, 2010
    Assignee: Interlock Industries, Inc.
    Inventors: Ford Silvers, Mike D. Whitaker
  • Patent number: 7708980
    Abstract: Propellants comprising a combination of: (a) a liquid component that is soluble in the organic chemical-based material; (b) a soluble gas component that has a solubility of at least about 3% by weight in the organic chemical-based material; and, (c) a substantially insoluble gas component that has a solubility of less than about 3% by weight of the organic chemical-based material are effective for a wide range of airless applications. Adjustment of the ratios of (a) to (b) to (c) can lead to propellants that provide excellent spray patterns for a wide range of organic chemical-based formulations.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: May 4, 2010
    Assignee: Illinois Tool Works Inc.
    Inventors: Michael Atwater, Donald R. Williams, Frederick P. Walnut, Keith D. Begin
  • Patent number: 7705056
    Abstract: A cannister-based, high solids, low and non-VOC aerosol adhesive and canister based system. The aerosol adhesive typically includes a high solids polymeric base, a hexane or cyclohexane and acetone solvent mixture and a compressed gas dissolved within the solvent. The compressed gas typically includes carbon dioxide, nitrogen, nitrous oxide and air. The aerosol adhesive is adapted to be filled into a cannister including a hose connected to the canister and a spray gun connected to the hose. The system typically includes high solids with a high viscosity. Thus the canister typically maintains high pressures up to 350 psi, but typically at 260 psi while maintaining 325 psi at 130° F., to deliver effective spray patterns.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: April 27, 2010
    Assignee: Westech Aerosol Corp.
    Inventor: David W. Carnahan
  • Publication number: 20100047189
    Abstract: Provided are azeotrope-like compositions consisting essentially of 1,1,1,2-tetrafluoropropene and 1,1,1,2-tetrafluoroethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
    Type: Application
    Filed: August 17, 2009
    Publication date: February 25, 2010
    Inventors: CHRISTOPHER J. SEETON, HANG T. PHAM, RAJIV R. SINGH, RYAN HULSE, MARK W. SPATZ, DAVID P. WILSON, SAMUEL F. YANA MOTTA
  • Patent number: 7405242
    Abstract: An aerosol composition which is prepared from a biliquid foam, an aqueous phase and a propellant, and wherein an oil soluble functional material is incorporated into the biliquid foam during preparation to enable this material to be more readily incorporated into the composition. The aerosol composition can be contained in a pressurized aerosol can and can be a polish, an air freshener, a repellant. a pre- or post-shave preparation, a shaving preparation or a follicle softener.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: July 29, 2008
    Assignee: Drug Delivery Solutions Limited
    Inventors: Anthony Fred Mercurio, Derek Alfred Wheeler
  • Publication number: 20080003185
    Abstract: Certain surfactants suitable for use alone to dissolve a water-insoluble component in compositions is described for providing VOC-free compressed gas aerosol compositions. The compositions include water-insoluble component(s), a surfactant and water. The water-insoluble component(s) can be active agent(s), such as fragrance(s) and/or an insecticide(s). The surfactant is present as a single surfactant which, in the absence of a solvent, dissolves or disperses the water-insoluble component(s) and provides a homogenous blend in water which provides a stable compressed gas emulsion.
    Type: Application
    Filed: June 27, 2007
    Publication date: January 3, 2008
    Applicant: S. C. Johnson Home Storage, Inc.
    Inventors: Richard S. Valpey, Paul A. Clark, Jessica A. Heiser
  • Patent number: 7128067
    Abstract: An aerosol is formed by supplying a material in liquid form to a flow passage and heating the flow passage such that the material volatizes and expands out of an open end of the flow passage. The volatized material combines with ambient air such that volatized material condenses to form the aerosol. An apparatus and method for generating such an aerosol are disclosed wherein the apparatus may include an electrically conductive sleeve at an open end of the flow passage, an electrically conductive flow passage and/or a spacer chamber. The volatilized material may contain a volatilized solute and vehicle such that the resulting aerosol particle sizes of the solute and the vehicle are either different or the same.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: October 31, 2006
    Assignee: Philip Morris USA Inc.
    Inventors: Peter R. Byron, Michael Hindle
  • Patent number: 7053124
    Abstract: An aerosol composition, which is prepared from a biliquid foam, an aqueous phase and a propellant. The incorporation of an oil soluble functional material into the biliquid foam during the preparation of the aerosol composition enables this material to be more readily incorporated into the composition.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: May 30, 2006
    Assignee: Disperse Limited
    Inventor: Anthony Fred Mercurio
  • Patent number: 6881757
    Abstract: Pressurized mixtures of propellant gasses and liquid surface or air treating materials are disclosed. The liquid materials are in the form of a dispersion which is a biliquid foam with a thickener, where the foam is structured as an oil-in-water complex. The dispersion has an oil portion having a polysiloxane and/or a hydrocarbon oil. There is also surfactant such as one nonionic surfactant and one polar surfactant. Water is also provided.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: April 19, 2005
    Assignee: S.C. Johnson & Son, Inc.
    Inventors: Timothy I. Moodycliffe, Ralph W. Oakeson, Lynn M. Werkowski
  • Publication number: 20040248994
    Abstract: The invention relates to a system comprising a silicate and a base which is a gas at room temperature, for inhibiting corrosion from aqueous based formulations within aerosol containers. In particular for tin-plated aerosol canisters and in particular aerosol canisters containing aqueous alkaline aerosol formulations.
    Type: Application
    Filed: March 24, 2004
    Publication date: December 9, 2004
    Inventors: Mattia De Dominicis, Zefferino Righetto
  • Patent number: 6767393
    Abstract: A self-shining aerosol-type shoe polish composition consisting essentially of 0.5 to 25% by volume of a silicone compound, optionally 3 to 25% by volume of a drying retardant and/or 0.1 to 1% by volume of an anti-static agent component, and the remainder of liquefied gas as a solvent as well as a propellant gas, exhibits excellent drying properties and self-shining effect when sprayed on the surface of shoes.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: July 27, 2004
    Inventors: Soon-Ki Paik, Jeon-Woon Bae
  • Patent number: 6673259
    Abstract: Disclosed are azeotrope-like compositions comprising 1,1,1,3,3-pentafluoropropane and at least one C3 or C4 hydrocarbon, and optionally water, said compositions are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: January 6, 2004
    Assignee: Honeywell International Inc.
    Inventors: Kane D. Cook, Rajiv R. Singh, Gary M. Knopeck, Mary C. Bogdan, Hang T. Pham, Leslie Bement, David J. Williams, James M. Bowman
  • Publication number: 20010014700
    Abstract: An aerosol preparation for two-component paint spray cans, in which the paint material consists of acrylic resins containing OH-groups, and the hardener consists of aliphatic polyisocyanatea. The paint material and hardener are filled in different containers within a spray can and united only immediately before they are processed, and jointly sprayed from the spray can via a propellant consisting of a propane/butane mixture. The weight ratio of diluted paint material to propellant amounts to about 75:25 to 70:30. The paint material consists of OH-group-containing high-solid acrylic resins with a higher solids content and with a mean molecular weight of <5000, and having no styrene and an OH-number of <150.
    Type: Application
    Filed: February 8, 2001
    Publication date: August 16, 2001
    Applicant: Peter Kwasny GmbH
    Inventor: Peter Kwasny
  • Patent number: 6258770
    Abstract: When certain weight ratios of certain flammable additive components (an ether and an epoxyalkane) are blended in n-propyl bromide, the components can actually function as flame retardants or flame suppressants when the resulting cleaning composition is used in aerosol applications. The proportions of the additives used are small; yet suitably effective stabilization against metallic corrosion is achieved even at mildly elevated temperatures.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: July 10, 2001
    Assignee: Albemarle Corporation
    Inventors: Ronald L. Shubkin, Eric W. Liimatta
  • Patent number: 6133327
    Abstract: An aerosol preparation which when sprayed forms a sherbet-like solid, which comprises a concentrate containing a lower alcohol having 1 to 3 carbon atoms and a higher alcohol having at least 12 carbon atoms and a propellant containing a liquefied gas. Said aerosol preparation does not require any complicated emulsifying procedure for the production, can contain components labile in water and have a durable cooling effect, and therefore, it is quickly calmative on the pain caused by contusion, sprain, muscular fatigue, etc. and the itch caused by athlete's foot, insect bite, etc.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: October 17, 2000
    Assignee: Taisho Pharmaceutical Co., Ltd.
    Inventors: Fuminori Kimura, Tsuyoshi Uchiyama, Haruo Shimamura, Fumio Urushizaki
  • Patent number: 6100229
    Abstract: The invention relates to novel compositions of 1,1,1,3,3-pentafluoropropane and chlorinated ethylenes and more particularly to azeotrope-like compositions based on these compounds which are useful as solvents in aerosol, refrigeration flushing, oxygen system cleaning and vapor degreasing applications.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: August 8, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Ellen L. Swan, Dennis Michael Lavery
  • Patent number: 5985939
    Abstract: The invention relates to the discovery of compositions useful as aerosol propellants that include a first component of butane or isobutane and a second component of 2-fluoropropane (HFC-281 ea) or 1-fluoropropane (HFC-282 fa).
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: November 16, 1999
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Barbara Haviland Minor
  • Patent number: 5968406
    Abstract: The azeotropic compositions of 1,1,2,2-tetrafluoroethane and 1,1-difluoroethane and the azeotropic and azeotropic-like composition of 1,1,2,2-tetrafluoroethane and one of, 1-chloro-1,1-difluoroethane, perfluorocyclobutane, n-butane, isobutane and 1,1,1,2,3,3,3-heptafluoropropane, and their use as refrigerants, aerosol propellants and blowing agents for polymer foams, are disclosed. The azeotropic and azeotrope-like compositions of 1,1,1,2-tetrafluoroethane and one of perfluorocyclobutane and 1,1,1,2,3,3,3-heptafluoropropane are also useful as fire extinguishants.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: October 19, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Philip Lee Bartlett, Donald Bernard Bivens, Brooks Shawn Lunger, Akimichi Yokozeki
  • Patent number: 5883142
    Abstract: A method for making a rigid polyurethane foam by reacting a polyisocyanate and a polyol in the presence of a urethane catalyst, a blowing agent and a silicone surfactant characterized by employing as a blowing agent a C1-C4 HFC or HCFC, preferably HFC-245fa, and as the silicone surfactant a polyether-polysiloxane coploymer having a total surfactant molecular weight of 12,000 to 100,000 g/mole, a wt % siloxane in the surfactant of 10 to 40 wt %, a molecular weight of the polyether portion of 1200 to 6,000 g/mole, and a wt % of ethylene oxide in the polyether portion of 30-100 wt %.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: March 16, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jennifer Ann Chojnacki, Karla Asuncion Sabram