Azeotropic Or Azeotrope-like Composition Patents (Class 510/408)
  • Patent number: 7459101
    Abstract: The present invention discloses ternary mixtures of fluoroethane (HFC-161), pentafluoroethane (HFC-125) and difluoromethane (HFC-32) used as environmentally friendly alternative refrigerants to HCFC-22. The mass ratios of the mixture of each component are 5-60%, 25-50% and 5-50%, respectively. Its ODP is zero, with no depletion potential to the ozone layer. Its GWP is smaller than those of HCFC-22, R407C and R410A. Its working pressure and pressure ratio are close to those of HCFC-22. With few changes to system components, it can be used as a potential substitute refrigerant for HCFC-22.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: December 2, 2008
    Assignee: Zhejiang Lantian Environmental Protection Hi-Tech Co. Ltd.
    Inventors: Guangming Chen, Zhikal Guo, Xinzheng Guo, Yongmei Xuan
  • Patent number: 7429557
    Abstract: CFC replacement solvent compositions, methods of using the same and methods of making the same. These compositions meet or exceed the solvency, flammability, and compatibility requirements for CFC's while providing similar or improved environmental and toxicological properties. These solvent compositions have application including, but not limited to, oxygen handling, refrigeration or heat pumps, electronics, implantable prosthetic devices, and optical equipment.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: September 30, 2008
    Assignee: Mainstream Engineering Corporation
    Inventors: Lawrence R. Grzyll, John A. Meyer, Dwight D. Back
  • Patent number: 7341984
    Abstract: Provided are azeotrope-like compositions comprising tetrafluoropropene and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: March 11, 2008
    Assignee: Honeywell International Inc.
    Inventors: David P. Wilson, Hang T. Pham, Rajiv R. Singh
  • Publication number: 20080045432
    Abstract: Azeotropic or azeotropic-like compositions of 1,1,1-trifluoroethane (HFC-143a) and 1-chloro-2,2,2-trifluoroethane (R-133a).
    Type: Application
    Filed: August 17, 2006
    Publication date: February 21, 2008
    Inventors: Stephen A. Cottrell, Hang T. Pham, Rajiv R. Singh, Hseuhsung Tung
  • Patent number: 7320954
    Abstract: A pentafluorobutane composition includes, with respect to 100 parts by weight of 1,1,1,3,3-pentafluorobutane: 0.1 to 5.0 parts by weight of at least one of nitromethane and nitroethane; and 0.1 to 5.0 parts by weight of at least one of 1,3-dioxolane, trimethoxymethane, trimethoxyethane, and 1,2-butylene oxide.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: January 22, 2008
    Assignee: Kaneko Chemical Co., Ltd.
    Inventor: Akiyasu Kaneko
  • Patent number: 7288511
    Abstract: Chemical solvating, degreasing, stripping and cleaning agents. The agents are cleaning and solvating mixtures of dichloroethylene and alkoxy-substituted perfluoro compounds that contain six carbon atoms, with optionally highly fluorinated materials to retard flammability and/or other enhancement agents that improve and enhance the properties of the composition to accomplish its desired cleaning or solvating task. These other agents are one or more of the following materials: alcohols, esters, ethers, cyclic ethers, ketones, alkanes, aromatics, amines, siloxanes terpenes, dibasic esters, glycol ethers, pyrollidones, or low- or non-ozone depleting halogenated hydrocarbons. These mixtures are useful in a variety of solvating, vapor degreasing, photoresist stripping, adhesive removal, aerosol, cold cleaning, and solvent cleaning applications including defluxing, dry-cleaning, degreasing, particle removal, metal and textile cleaning.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: October 30, 2007
    Assignee: Kyzen Corporation
    Inventors: Kyle Doyel, Michael Bixenman
  • Patent number: 7279451
    Abstract: The use to e of tetrafluoropropenes, particularly (HFO-1234) in a variety of applications, including refrigeration equipment, is disclosed. These materials are generally useful as refrigerants for heating and cooling, as blowing agents, as aerosol propellants, as solvent composition, and as fire extinguishing and suppressing agents.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: October 9, 2007
    Assignee: Honeywell International Inc.
    Inventors: Rajiv R. Singh, Hang T. Pham, Ian Shankland
  • Patent number: 7265082
    Abstract: The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentachloropropane (HCC-240fa) and carbon tetrachloride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the production of HFC-245fa. The latter is useful as a nontoxic, zero ozone depleting fluorocarbon useful as a solvent, blowing agent, refrigerant, cleaning agent and aerosol propellant.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: September 4, 2007
    Assignee: Honeywell International Inc.
    Inventors: Hang T. Pham, Rajiv R. Singh, Hsueh Sung Tung
  • Patent number: 7241928
    Abstract: A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CAR1R2CBR3R4 (where A, B, R1, R2, R3, and R4 are as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR1R2?CR3R4 in a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF. New compounds disclosed include CF3CF2CCl2CH2CCl3, CF3CCl2CH2CH2Cl and CF3CCl2CH2CHClF. These compounds are useful as intermediates for producing hydrofluorocarbons.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: July 10, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Velliyur N.Mallikarjuna Rao, Allen Capron Sievert
  • Patent number: 7163646
    Abstract: A solvent composition comprising 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorohexane (R52-13), trans-1,2-dichloroethylene (tDCE) and a C1-3 alcohol, wherein the content of R52-13 is from 25.0 to 75.0% (by mass, and the same applies hereinafter), the content of tDCE is from 15.0 to 74.9% and the content of the C1-3 alcohol is from 0.1 to 10.0%, to the total amount of R52-13, tDCE and the C1-3 alcohol. This solvent composition can remove oils and greases and flux with a high cleaning performance.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: January 16, 2007
    Assignee: Asahi Glass Company, Limited
    Inventor: Tsuyoshi Hanada
  • Patent number: 7163645
    Abstract: A solvent composition comprising 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether in an amount of from 25.0 to 75.0% (by mass, and the same applies hereinafter), trans-1,2-dichloroethylene in an amount of from 15.0 to 74.9%, and a C1-3 alcohol in an amount of from 0.1 to 10.0%, to the total amount of the 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether, the trans-1,2-dichloroethylene and the C1-3 alcohol. The solvent composition of the present invention can remove soil such as flux with a high cleaning performance.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: January 16, 2007
    Assignee: Asahi Glass Company, Limited
    Inventors: Tsuyoshi Hanada, Masaaki Tsuzaki
  • Patent number: 7144926
    Abstract: Foam blowing agent blends containing trans-1,2-dichloroethylene and one or more hydrofluorocarbons are provided, as are foam compositions containing such blends. The resulting foams exhibit dramatic improvement in fire performance.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: December 5, 2006
    Assignee: Arkema Inc.
    Inventors: Steve M. Galaton, Christopher Bertelo
  • Patent number: 7098176
    Abstract: Provided are azeotrope-like compositions comprising tetrafluoropropene and pentafluoropropene and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: August 29, 2006
    Assignee: Honeywell International Inc.
    Inventors: Rajiv R. Singh, Hang T. Pham, David P. Wilson, Raymond H. Thomas, David Nalewajek
  • Patent number: 7091170
    Abstract: At least one kind of solvent selected from among nitromethane, nitroethane, d-limonene and 3-methoxybutyl acetate is mixed to 1,1,1,3,3-pentafluorobutane to such an extent as not imparting any flammability. Also, propylene glycol based solvent(s) is mixed to 1,1,1,3,3-pentafluorobutane to such an extent as not imparting any flammability.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: August 15, 2006
    Assignee: Kaneko Chemical Co., Ltd.
    Inventor: Akiyasu Kaneko
  • Patent number: 7074751
    Abstract: Provided are azeotrope-like compositions comprising tetrafluoropropene and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: July 11, 2006
    Assignee: Honeywell International Inc.
    Inventors: Rajiv R. Singh, Hang T. Pham
  • Patent number: 7071154
    Abstract: Azeotrope-like compositions comprising C2F5CF(OCH3)CF(CF3)2 (1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-trifluoromethyl-pentane) and an organic solvent, and uses thereof, are described.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: July 4, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Paul E. Rajtar, John G. Owens
  • Patent number: 7067468
    Abstract: Novel azeotrope compositions comprised of a mixture of a fluorocyclopentane with a solvent selected from the group consisting of 1-bromopropane, t-dichloroethylene, and methylene chloride. Such compositions are useful as solvents in refrigeration flushing, oxygen system cleaning, foam blowing, and cleaning operations such as cold cleaning, vapor degreasing, and aerosol cleaners.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: June 27, 2006
    Inventors: Richard J. DeGroot, Dov Shellef
  • Patent number: 7053036
    Abstract: Disclosed is a composition comprised of n-propyl bromide and 1,1,1,3,3-pentafluorobutane. This invention also relates to cleaning solvent systems comprised of n-propyl bromide and 1,1,1,3,3-pentafluorobutane and methods for cleaning various solid substrates.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: May 30, 2006
    Assignee: Poly Systems USA, Inc.
    Inventors: Richard J. DeGroot, Ronald L. Shubkin, Dov Shellef
  • Patent number: 7022658
    Abstract: Azeotrope-like compositions comprising hexafluoropropylene dimer and a hydrocarbon or a hydrofluorocarbon, and uses thereof, are described.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: April 4, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: David A. Hesselroth, John G. Owens
  • Patent number: 7022253
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: April 4, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Patent number: 6989088
    Abstract: A process for producing a perfluorocyclicamine which includes electrolytically fluorinating a triallylamine in anhydrous liquid hydrogen fluoride. A constant boiling composition and process for producing the same is also described.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: January 24, 2006
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Kiyomitsu Kanno, Toshio Nagashima, Galina I. Kaourova, Dmitri D. Moldavski, Vladimir I. Gribel
  • Patent number: 6969701
    Abstract: Provided are azeotrope-like compositions comprising tetrafluoropropene and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: November 29, 2005
    Assignee: Honeywell International Inc.
    Inventors: Rajiv R. Singh, Hang T. Pham, David P. Wilson, Raymond H. Thomas
  • Patent number: 6943141
    Abstract: A process for manufacturing a liquid evaporation retardant product that combines isopropanol-water azeotrope with up to 5% octadecanol by weight of the total solution, and upon which improved capability to remain precipitate free in the event of colder temperatures than normal is conferred by adding n-butanol at 10% by weight of the pre-made basic product.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: September 13, 2005
    Inventor: Robert Neville O'Brien
  • Patent number: 6930079
    Abstract: The present invention relates to a process for treating a lipophilic fluid contained in an emulsion of water and lipophilic fluid. The process includes the steps of pretreating the emulsion, removing lipophilic fluid from the emulsion, and purifying the lipophilic fluid to remove at least a portion of the impurities collected during the use of the emulsion. Method options are provided for each of the aforementioned steps.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: August 16, 2005
    Assignee: Procter & Gamble Company
    Inventors: John Christopher Deak, Paul Amaat France, Kristina Marie Rohal Gansle, Anna Vadimovna Noyes, Arseni V. Radomyselski, John Cort Severns, Christiaan Arthur Jacques Kamiel Thoen, Jean Wevers
  • Patent number: 6914040
    Abstract: The present invention relates to a process for treating a lipophilic fluid contained in an emulsion of water and lipophilic fluid. The process includes the steps of pretreating the emulsion, removing lipophilic fluid from the emulsion, and purifying the lipophilic fluid to remove at least a portion of the impurities collected during the use of the emulsion. Method options are provided for each of the aforementioned steps.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: July 5, 2005
    Assignee: Procter & Gamble Company
    Inventors: John Christopher Deak, Paul Armaat France, Kristina Marie Rohal Gansle, Anna Vadimovna Radomyselski, Arseni V. Radomyselski, John Cort Severns, Christiaan Arthur Jacques Kamiel Thoen, Jean Wevers
  • Patent number: 6903063
    Abstract: The invention relates to azeotropic and azeotrope-like mixtures of 1-chloro-1,3,3,3-tetrafluoropropane (HCFC-244fa) and hydrogen fluoride, which are useful as intermediates in the production of HCFC-244fa.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: June 7, 2005
    Assignee: Honeywell International Inc.
    Inventors: Hang Thanh Pham, Rajiv Ratna Singh, Hsueh Sung Tung, Milton Cook
  • Patent number: 6858571
    Abstract: Provided are azeotrope-like compositions comprising pentafluoropropene (HFO-1225) and a fluid selected from the group consisting of 3,3,3-trifluoropropene (“HFO-1243zf”), 1,1-difluoroethane (“HFC-152a”), trans-1,3,3,3-tetrafluoropropene (“HFO-1234ze”), and combinations of two or more thereof. Also provided are uses thereof including as refrigerants, blowing agents, sprayable compositions, flame suppressant, and the like.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: February 22, 2005
    Assignee: Honeywell International Inc.
    Inventors: Hang T. Pham, Rajiv R. Singh, David P. Wilson
  • Patent number: 6855211
    Abstract: Disclosed is a composition of about 20 to about 80 wt % benzotrifluoride and about 20 to about 80 wt % trichloroethylene. Up to about 1 wt % of a stabilizer for the trichloroethylene can be included in the composition.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: February 15, 2005
    Assignee: Emerald Agrochemicals Company AVV
    Inventors: Hang-Chang Bobby Chen, Edward A. Rowe
  • Patent number: 6852684
    Abstract: Disclosed are non-flammable, high-solvency compositions having utility as cleaning agents in the electronics and refrigeration industries, and as a medium for mold release agents. The compositions are non-flammable by Flame Extension Test ASTM D-3065 and Flash Point-Tag Closed Cup Test ASTM D-56-82, and have a Kauri Butanol value of at least about 40 by ASTM 1133-94. The compositions comprise the components: a.) trans-1,2-dichloroethylene; and b.) solvent selected from: i.) oxygen-containing solvents selected from alcohols, ketones, esters, siloxanes, and ethers; and ii.) hydrocarbon solvents represented by CtH2t+2 or CtH2t, wherein t is from 4 to 8; and c.) an inerting agent selected from: i.) hydrofluorocarbon inerting agents represented by the formula CxHyF(2x+2?y), wherein x is from 3 to 8, y is from 1 to 4, and the mole ratio of F/H in the hydrofluorocarbon inerting agent is greater than 1.6; ii.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: February 8, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Greg A. Westbrook, Thomas L. Tattersall, Mark C. Wolff
  • Patent number: 6846792
    Abstract: Refrigerant compositions include mixtures of difluoromethane and isobutane, butane, propylene or cyclopropane; pentafluoroethane and propylene or cyclopropane; 1,1,2,2-tetrafluoroethane and propane; 1,1,1,2-tetrafluoroethane and cyclopropane; 1,1,1-trifluoroethane and DME or propylene; 1,1-difluoroethane and propane, isobutane, butane or cyclopropane; fluoroethane and propane or cyclopropane; 1,1,1,2,2,3,3-heptafluoropropane and butane, cyclopropane, DME, isobutane or propane; or 1,1,1,2,3,3,3-heptafluoropropane and butane, cyclopropane, isobutane or propane.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: January 25, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Donald Bernard Bivens, Brooks Shawn Lunger
  • Patent number: 6793840
    Abstract: An azeotropic mixture of perfluorobutylethylene and at least one of the group consisting of bromochloromethane, cyclopentane, cis-1,2 dichloroethylene, trans-1,2 dichloroethylene and dichloromethane useful for cleaning agents, blowing agents and certain of which are suitable for flash spinning of polyolefins to make plexifilamentary fibers.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: September 21, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Hyunkook Shin, Chien-Ping Chai Kao, Thomas A. J. Schweiger
  • Patent number: 6790820
    Abstract: The present invention provides compositions comprising an HFC component and a non-HFC component consisting essentially of methanol, having boiling points that are unexpectedly low and relatively constant, and uses thereof.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: September 14, 2004
    Assignee: Honeywell International, Inc.
    Inventors: Mary C. Bogdan, Gary M. Knopeck, Hang T. Pham, Rajiv R. Singh, Kane D. Cook
  • Patent number: 6787513
    Abstract: This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and 2-chloropropane that 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: June 4, 2003
    Date of Patent: September 7, 2004
    Assignee: Honeywell International Inc.
    Inventors: Hang T. Pham, Gary Knopeck, Ronald Riegal, Mary C. Bogdan, Leslie Bement, David J. Williams
  • Patent number: 6777382
    Abstract: The present invention provides compositions comprising an HFC component and a non-HFC component consisting essentially of methanol, having boiling points that are unexpectedly low and relatively constant, and uses thereof.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: August 17, 2004
    Assignee: Honeywell International Inc.
    Inventors: Mary C. Bogdan, Kane D. Cook, Hang T. Pham, Gary M. Knopeck, Rajiv R. Singh
  • Patent number: 6764990
    Abstract: This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane, 2-chloropropane and dichloroethylene that 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: June 4, 2003
    Date of Patent: July 20, 2004
    Assignee: Honeywell International Inc.
    Inventors: Mary C. Bogdan, Hang T. Pham, Gary M. Knopek, Rajiv R. Singh, David J. Williams, Kane D. Cook
  • Patent number: 6759381
    Abstract: Provided are azeotropic and azeotrope-like mixtures of 1-chloro-1,3,3,3-tetrafluoropropane and 1,2-dichloro-3,3,3-trifluoropropene that are useful as an intermediate in the production of HFC-245fa. HFC-245fa is useful as a nontoxic, zero ozone depleting fluorocarbon useful as solvents, blowing agents, refrigerants, cleaning agents, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing compositions and power cycle working fluids.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: July 6, 2004
    Assignee: Honeywell International Inc.
    Inventors: Robert C. Johnson, Daniel C. Merkel, Hsuehsung Tung
  • Patent number: 6753356
    Abstract: Use as foaming agents having a low environmental impact of azeotropic or near azeotropic compositions using difluoromethoxy-bis(difluoromethyl ether) and/or 1-difluoromethoxy-1,1,2,2-tetrafluoroethyl difluoromethyl ether.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: June 22, 2004
    Assignee: Ausimont S.p.A.
    Inventors: Ezio Musso, Giampiero Basile, Sauro Girolomoni
  • Patent number: 6746998
    Abstract: A non-flammable ternary liquid cleaner is formulated from first, second and third solvents. The first solvent is a hydrofluorocarbon, the second solvent is a dichloroethylene and the third solvent is a hydrochlorofluorocarbon. The hydrochlorofluorocarbon imparts low flammability to the cleaner. The hydrofluorocarbon is present in a concentration of about 10 percent to about 80 percent by weight of the cleaner, the dichloroethylene is present in a concentration of about 10 percent to about 60 percent by weight of the cleaner and the hydrochlorofluorocarbon is present in a concentration of at about 10 percent to about 40 percent by weight of the cleaner. The third solvent is non-flammable and thus renders the ternary cleaner non-flammable.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: June 8, 2004
    Assignee: Illinois Tool Works, Inc.
    Inventor: James M. Fitzgerald
  • Publication number: 20040014621
    Abstract: Refrigerant compositions include mixtures of difluoromethane and isobutane, butane, propylene or cyclopropane; pentafluoroethane and propylene or cyclopropane; 1,1,2,2-tetrafluoroethane and propane; 1,1,1,2-tetrafluoroethane and cyclopropane; 1,1,1-trifluoroethane and DME or propylene; 1,1-difluoroethane and propane, isobutane, butane or cyclopropane; fluoroethane and propane or cyclopropane; 1,1,1,2,2,3,3-heptafluoropropane and butane, cyclopropane, DME, isobutane or propane; or 1,1,1,2,3,3,3-heptafluoropropane and butane, cyclopropane, isobutane or propane.
    Type: Application
    Filed: December 20, 2002
    Publication date: January 22, 2004
    Inventors: Barbara Haviland Minor, Donald Bernard Bivens, Brooks Shawn Lunger
  • Patent number: 6676809
    Abstract: Hydrogen fluoride is effectively removed from a mixture of hydrogen fluoride, dichloromethane, chlorofluoromethane and/or difluoromethane by distilling the mixture so that two-component azeotropic mixtures of hydrogen fluoride and dichloromethane, hydrogen fluoride and chlorofluoromethane and hydrogen fluoride and difluoromethane are removed, or by liquid-separating the mixture into an upper liquid phase rich in hydrogen fluoride and a lower liquid phase not rich in hydrogen fluoride before each liquid phase is distilled as described above.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: January 13, 2004
    Assignee: Daikin Industries Ltd.
    Inventors: Takehide Tsuda, Takeo Matsumoto, Yoshinori Tanaka, Satoshi Komatsu, Satoshi Koyama
  • Publication number: 20030228997
    Abstract: Chemical solvating, degreasing, stripping and cleaning agents. The agents are cleaning and solvating mixtures of dichloroethylene and alkoxy-substituted perfluoro compounds that contain six carbon atoms, with optionally highly fluorinated materials to retard flammability and/or other enhancement agents that improve and enhance the properties of the composition to accomplish its desired cleaning or solvating task. These other agents are one or more of the following materials: alcohols, esters, ethers, cyclic ethers, ketones, alkanes, aromatics, amines, siloxanes terpenes, dibasic esters, glycol ethers, pyrollidones, or low- or non-ozone depleting halogenated hydrocarbons. These mixtures are useful in a variety of solvating, vapor degreasing, photoresist stripping, adhesive removal, aerosol, cold cleaning, and solvent cleaning applications including defluxing, dry-cleaning, degreasing, particle removal, metal and textile cleaning.
    Type: Application
    Filed: June 7, 2002
    Publication date: December 11, 2003
    Applicant: Kyzen Corporation
    Inventors: Kyle Doyel, Michael Bixenman
  • Patent number: 6660701
    Abstract: This invention relates to improved stabilizing compositions for n-propyl bromide. More particularly, the cleaning composition includes about 0.1 to 5% Butylene oxide, about 0.1 to 5.0% t-butanol, about 0.1 to 5% acetonitrile, about 0.1 to 5% nitromethane; and the remainder n-propyl bromide. These mixtures are useful as cleaning solvents for the electronic, aerospace, and general manufacturing industries, especially in the area of vapor degreasing.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: December 9, 2003
    Assignee: Polysystems USA, Inc.
    Inventor: Richard Degroot
  • Publication number: 20030224957
    Abstract: This invention relates to compositions that include at least one fluoroether and at least one hydrofluorocarbon. Included in this invention are compositions of a cyclic or acyclic hydrofluoroether of the formula CaFbH2a+2−bOc wherein a=2 or 3 and 3≦b≦8 and c=1 or 2 and a hydrofluorocarbon of the formula CnFmH2n+2−m wherein 1≦n≦4 and 1≦m≦8. Such compositions may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.
    Type: Application
    Filed: June 5, 2003
    Publication date: December 4, 2003
    Inventors: Diana Lynn Klug, Barbara Haviland Minor, Donna Marie Patron, Tuneen Chisolm-Carter, Allen Capron Sievert
  • Publication number: 20030211956
    Abstract: This invention relates to compositions that include at least one fluoroether and at least one hydrofluorocarbon. Included in this invention are compositions of a cyclic or acyclic hydrofluoroether of the formula CaFbH2a+2−bOc wherein a=2 or 3 and 3≦b≦8 and c=1 or 2 and a hydrofluorocarbon of the formula CnFmH2n+2−m wherein 1≦n≦4 and 1≦m≦8. Such compositions may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.
    Type: Application
    Filed: June 5, 2003
    Publication date: November 13, 2003
    Inventors: Diana Lynn Klug, Barbara Haviland Minor, Donna Marie Patron, Tuneen Chisolm-Carter, Allen Capron Sievert
  • Patent number: 6646020
    Abstract: A composition useful as a blowing agent having no flash point or reduced combustibility comprising 2-chloropropane and a gas selected from the group consisting of a fluorohydrocarbon, perfluorocarbons, fluoroethers, hydrofluoropolyethers and mixtures thereof is disclosed. A polyisocyanurate foam or a polyurethane modified polyisocyanurate foam having a mainly closed cell structure and also a method for preparing this foam, the latter comprising closed cells wherein a foam blowing agent consisting of a mixture of 2-chloropropane and one or more HFC compounds including pentafluoropropane, pentafluorobutane, heptafluoropropane, hexafluoropropane or pentafluoroethane are disclosed. Pentanes can be added if desired. Azeotropic mixtures in which 2-chloropropane is an ingredient are disclosed.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: November 11, 2003
    Assignee: Vulcan Chemicals a division of Vulcan Materials Company
    Inventors: Janice M. Nyberg, Eric L. Mainz
  • Publication number: 20030199408
    Abstract: The present invention relates to the discovery of compositions which include fluoroethane, 2-fluoropropane or tert-butylfluoride. These compositions are useful as pure components or with at least one of tetrafluoroethane, difluoroethane, hexafluoropropane, a hydrocarbon or dimethylether.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 23, 2003
    Inventors: Barbara Haviland Minor, Vinci Martinez Felix, Allen Capron Sievert
  • Patent number: 6635187
    Abstract: A process is disclosed for producing compositions including (a) a compound selected from the group consisting of CHF2CF3, CHF2CHF2, CH2FCF3, CH3CF3, CH3CHF2, CH2FCF2CHF2 and CHF2CF2CF2CHF2 and (b) at least one saturated halogenated hydrocarbon and/or ether having the formula: CnH2n+2-a-bClaFbOc wherein n is an integer from 1 to 4, a is an integer from 0 to 2n+1, b is an integer from 1 to 2n+2-a, and c is 0 or 1, provided that when c is 1 then n is an integer from 2 to 4, and provided that component (b) does not include the selected component (a) compound, wherein the molar ratio of component (b) to component (a) is between about 1:99 and a molar ratio of HF to component (a) in an azeotrope or azeotrope-like composition of component (a) with HF.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: October 21, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Barry A. Mahler, V. N. Mallikarjuna Rao, Allen Capron Sievert
  • Patent number: 6602844
    Abstract: A process for producing a perfluorocyclicamine which includes electrolytically fluorinating a triallylamine in anhydrous liquid hydrogen fluoride. A constant boiling composition and process for producing the same is also described.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: August 5, 2003
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Kiyomitsu Kanno, Toshio Nagashima, Galina I. Kaourova, Dmitri D. Moldavski, Vladimir I. Gribel
  • Patent number: 6586488
    Abstract: Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: July 1, 2003
    Assignee: AlliedSignal Inc.
    Inventor: Ian Robert Shankland
  • Patent number: RE39819
    Abstract: To replace compositions based on CFCs or CFHCs in applications for cleaning or drying solid surfaces (in particular defluxing), the invention proposes azeotropic or quasi-azeotropic compositions based on 1,1,1,2,3,4,4,5,5,5-decafluoropentane, 1,1,1,3,3-pentafluorobutane and, optionally, methanol.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: September 4, 2007
    Assignee: Atofina
    Inventor: Pascal Michaud