Azeotropic Or Azeotrope-like Composition Patents (Class 510/408)
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Patent number: 7459101Abstract: 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: GrantFiled: September 9, 2005Date of Patent: December 2, 2008Assignee: Zhejiang Lantian Environmental Protection Hi-Tech Co. Ltd.Inventors: Guangming Chen, Zhikal Guo, Xinzheng Guo, Yongmei Xuan
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Patent number: 7429557Abstract: 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: GrantFiled: January 27, 2005Date of Patent: September 30, 2008Assignee: Mainstream Engineering CorporationInventors: Lawrence R. Grzyll, John A. Meyer, Dwight D. Back
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Patent number: 7341984Abstract: 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: GrantFiled: April 18, 2005Date of Patent: March 11, 2008Assignee: Honeywell International Inc.Inventors: David P. Wilson, Hang T. Pham, Rajiv R. Singh
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Publication number: 20080045432Abstract: Azeotropic or azeotropic-like compositions of 1,1,1-trifluoroethane (HFC-143a) and 1-chloro-2,2,2-trifluoroethane (R-133a).Type: ApplicationFiled: August 17, 2006Publication date: February 21, 2008Inventors: Stephen A. Cottrell, Hang T. Pham, Rajiv R. Singh, Hseuhsung Tung
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Patent number: 7320954Abstract: 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: GrantFiled: February 24, 2005Date of Patent: January 22, 2008Assignee: Kaneko Chemical Co., Ltd.Inventor: Akiyasu Kaneko
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Patent number: 7288511Abstract: 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: GrantFiled: October 29, 2003Date of Patent: October 30, 2007Assignee: Kyzen CorporationInventors: Kyle Doyel, Michael Bixenman
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Patent number: 7279451Abstract: 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: GrantFiled: April 29, 2004Date of Patent: October 9, 2007Assignee: Honeywell International Inc.Inventors: Rajiv R. Singh, Hang T. Pham, Ian Shankland
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Patent number: 7265082Abstract: 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: GrantFiled: August 4, 2004Date of Patent: September 4, 2007Assignee: Honeywell International Inc.Inventors: Hang T. Pham, Rajiv R. Singh, Hsueh Sung Tung
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Patent number: 7241928Abstract: 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: GrantFiled: October 1, 2004Date of Patent: July 10, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Velliyur N.Mallikarjuna Rao, Allen Capron Sievert
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Patent number: 7163646Abstract: 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: GrantFiled: February 28, 2005Date of Patent: January 16, 2007Assignee: Asahi Glass Company, LimitedInventor: Tsuyoshi Hanada
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Patent number: 7163645Abstract: 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: GrantFiled: January 3, 2005Date of Patent: January 16, 2007Assignee: Asahi Glass Company, LimitedInventors: Tsuyoshi Hanada, Masaaki Tsuzaki
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Patent number: 7144926Abstract: 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: GrantFiled: March 25, 2003Date of Patent: December 5, 2006Assignee: Arkema Inc.Inventors: Steve M. Galaton, Christopher Bertelo
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Patent number: 7098176Abstract: 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: GrantFiled: April 16, 2004Date of Patent: August 29, 2006Assignee: Honeywell International Inc.Inventors: Rajiv R. Singh, Hang T. Pham, David P. Wilson, Raymond H. Thomas, David Nalewajek
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Patent number: 7091170Abstract: 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: GrantFiled: February 14, 2002Date of Patent: August 15, 2006Assignee: Kaneko Chemical Co., Ltd.Inventor: Akiyasu Kaneko
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Patent number: 7074751Abstract: 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: GrantFiled: April 16, 2004Date of Patent: July 11, 2006Assignee: Honeywell International Inc.Inventors: Rajiv R. Singh, Hang T. Pham
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Patent number: 7071154Abstract: 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: GrantFiled: December 18, 2003Date of Patent: July 4, 2006Assignee: 3M Innovative Properties CompanyInventors: Paul E. Rajtar, John G. Owens
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Patent number: 7067468Abstract: 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: GrantFiled: June 20, 2003Date of Patent: June 27, 2006Inventors: Richard J. DeGroot, Dov Shellef
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Patent number: 7053036Abstract: 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: GrantFiled: October 30, 2002Date of Patent: May 30, 2006Assignee: Poly Systems USA, Inc.Inventors: Richard J. DeGroot, Ronald L. Shubkin, Dov Shellef
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Patent number: 7022658Abstract: Azeotrope-like compositions comprising hexafluoropropylene dimer and a hydrocarbon or a hydrofluorocarbon, and uses thereof, are described.Type: GrantFiled: September 29, 2003Date of Patent: April 4, 2006Assignee: 3M Innovative Properties CompanyInventors: David A. Hesselroth, John G. Owens
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Patent number: 7022253Abstract: 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: GrantFiled: April 16, 2004Date of Patent: April 4, 2006Assignee: Solvay (Societe Anonyme)Inventors: Pierre Dournel, Pierre Barthelemy
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Patent number: 6989088Abstract: 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: GrantFiled: May 9, 2003Date of Patent: January 24, 2006Assignee: Showa Denko Kabushiki KaishaInventors: Kiyomitsu Kanno, Toshio Nagashima, Galina I. Kaourova, Dmitri D. Moldavski, Vladimir I. Gribel
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Patent number: 6969701Abstract: 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: GrantFiled: April 16, 2004Date of Patent: November 29, 2005Assignee: Honeywell International Inc.Inventors: Rajiv R. Singh, Hang T. Pham, David P. Wilson, Raymond H. Thomas
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Patent number: 6943141Abstract: 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: GrantFiled: May 13, 2002Date of Patent: September 13, 2005Inventor: Robert Neville O'Brien
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Patent number: 6930079Abstract: 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: GrantFiled: May 4, 2001Date of Patent: August 16, 2005Assignee: Procter & Gamble CompanyInventors: 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
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Patent number: 6914040Abstract: 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: GrantFiled: September 10, 2002Date of Patent: July 5, 2005Assignee: Procter & Gamble CompanyInventors: 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
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Patent number: 6903063Abstract: 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: GrantFiled: October 29, 2002Date of Patent: June 7, 2005Assignee: Honeywell International Inc.Inventors: Hang Thanh Pham, Rajiv Ratna Singh, Hsueh Sung Tung, Milton Cook
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Patent number: 6858571Abstract: 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: GrantFiled: October 27, 2003Date of Patent: February 22, 2005Assignee: Honeywell International Inc.Inventors: Hang T. Pham, Rajiv R. Singh, David P. Wilson
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Patent number: 6855211Abstract: 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: GrantFiled: February 13, 2002Date of Patent: February 15, 2005Assignee: Emerald Agrochemicals Company AVVInventors: Hang-Chang Bobby Chen, Edward A. Rowe
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Patent number: 6852684Abstract: 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: GrantFiled: September 17, 1999Date of Patent: February 8, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Greg A. Westbrook, Thomas L. Tattersall, Mark C. Wolff
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Patent number: 6846792Abstract: 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: GrantFiled: December 20, 2002Date of Patent: January 25, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Barbara Haviland Minor, Donald Bernard Bivens, Brooks Shawn Lunger
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Patent number: 6793840Abstract: 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: GrantFiled: September 4, 2003Date of Patent: September 21, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Hyunkook Shin, Chien-Ping Chai Kao, Thomas A. J. Schweiger
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Patent number: 6790820Abstract: 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: GrantFiled: June 3, 2002Date of Patent: September 14, 2004Assignee: Honeywell International, Inc.Inventors: Mary C. Bogdan, Gary M. Knopeck, Hang T. Pham, Rajiv R. Singh, Kane D. Cook
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Patent number: 6787513Abstract: 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: GrantFiled: June 4, 2003Date of Patent: September 7, 2004Assignee: Honeywell International Inc.Inventors: Hang T. Pham, Gary Knopeck, Ronald Riegal, Mary C. Bogdan, Leslie Bement, David J. Williams
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Patent number: 6777382Abstract: 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: GrantFiled: June 3, 2002Date of Patent: August 17, 2004Assignee: Honeywell International Inc.Inventors: Mary C. Bogdan, Kane D. Cook, Hang T. Pham, Gary M. Knopeck, Rajiv R. Singh
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Patent number: 6764990Abstract: 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: GrantFiled: June 4, 2003Date of Patent: July 20, 2004Assignee: Honeywell International Inc.Inventors: Mary C. Bogdan, Hang T. Pham, Gary M. Knopek, Rajiv R. Singh, David J. Williams, Kane D. Cook
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Patent number: 6759381Abstract: 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: GrantFiled: May 6, 2003Date of Patent: July 6, 2004Assignee: Honeywell International Inc.Inventors: Robert C. Johnson, Daniel C. Merkel, Hsuehsung Tung
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Patent number: 6753356Abstract: 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: GrantFiled: August 16, 1999Date of Patent: June 22, 2004Assignee: Ausimont S.p.A.Inventors: Ezio Musso, Giampiero Basile, Sauro Girolomoni
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Patent number: 6746998Abstract: 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: GrantFiled: May 23, 2002Date of Patent: June 8, 2004Assignee: Illinois Tool Works, Inc.Inventor: James M. Fitzgerald
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Publication number: 20040014621Abstract: 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: ApplicationFiled: December 20, 2002Publication date: January 22, 2004Inventors: Barbara Haviland Minor, Donald Bernard Bivens, Brooks Shawn Lunger
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Patent number: 6676809Abstract: 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: GrantFiled: November 12, 1997Date of Patent: January 13, 2004Assignee: Daikin Industries Ltd.Inventors: Takehide Tsuda, Takeo Matsumoto, Yoshinori Tanaka, Satoshi Komatsu, Satoshi Koyama
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Publication number: 20030228997Abstract: 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: ApplicationFiled: June 7, 2002Publication date: December 11, 2003Applicant: Kyzen CorporationInventors: Kyle Doyel, Michael Bixenman
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Patent number: 6660701Abstract: 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: GrantFiled: October 22, 2001Date of Patent: December 9, 2003Assignee: Polysystems USA, Inc.Inventor: Richard Degroot
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Publication number: 20030224957Abstract: 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: ApplicationFiled: June 5, 2003Publication date: December 4, 2003Inventors: Diana Lynn Klug, Barbara Haviland Minor, Donna Marie Patron, Tuneen Chisolm-Carter, Allen Capron Sievert
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Publication number: 20030211956Abstract: 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: ApplicationFiled: June 5, 2003Publication date: November 13, 2003Inventors: Diana Lynn Klug, Barbara Haviland Minor, Donna Marie Patron, Tuneen Chisolm-Carter, Allen Capron Sievert
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Patent number: 6646020Abstract: 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: GrantFiled: February 14, 2002Date of Patent: November 11, 2003Assignee: Vulcan Chemicals a division of Vulcan Materials CompanyInventors: Janice M. Nyberg, Eric L. Mainz
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Publication number: 20030199408Abstract: 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: ApplicationFiled: April 22, 2003Publication date: October 23, 2003Inventors: Barbara Haviland Minor, Vinci Martinez Felix, Allen Capron Sievert
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Patent number: 6635187Abstract: 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: GrantFiled: November 15, 2000Date of Patent: October 21, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Barry A. Mahler, V. N. Mallikarjuna Rao, Allen Capron Sievert
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Patent number: 6602844Abstract: 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: GrantFiled: August 9, 2001Date of Patent: August 5, 2003Assignee: Showa Denko Kabushiki KaishaInventors: Kiyomitsu Kanno, Toshio Nagashima, Galina I. Kaourova, Dmitri D. Moldavski, Vladimir I. Gribel
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Patent number: 6586488Abstract: 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: GrantFiled: June 10, 1997Date of Patent: July 1, 2003Assignee: AlliedSignal Inc.Inventor: Ian Robert Shankland
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Patent number: RE39819Abstract: 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: GrantFiled: January 15, 2003Date of Patent: September 4, 2007Assignee: AtofinaInventor: Pascal Michaud