WO1994004629A1 - Melanges a point d'ebulition sensiblement constant de 1,1,1,2-tetrafluoroethane, d'ether dimethylique et d'isobutane - Google Patents

Melanges a point d'ebulition sensiblement constant de 1,1,1,2-tetrafluoroethane, d'ether dimethylique et d'isobutane Download PDF

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Publication number
WO1994004629A1
WO1994004629A1 PCT/US1993/007483 US9307483W WO9404629A1 WO 1994004629 A1 WO1994004629 A1 WO 1994004629A1 US 9307483 W US9307483 W US 9307483W WO 9404629 A1 WO9404629 A1 WO 9404629A1
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WO
WIPO (PCT)
Prior art keywords
weight percent
composition
substantially constant
constant boiling
tetrafluoroethane
Prior art date
Application number
PCT/US1993/007483
Other languages
English (en)
Inventor
Mark Brandon Shiflett
Original Assignee
E.I. Du Pont De Nemours And Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by E.I. Du Pont De Nemours And Company filed Critical E.I. Du Pont De Nemours And Company
Publication of WO1994004629A1 publication Critical patent/WO1994004629A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/149—Mixtures of blowing agents covered by more than one of the groups C08J9/141 - C08J9/143
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/11—Ethers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/12—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/32—The mixture being azeotropic

Definitions

  • This invention relates to substantially constant boiling compositions that are mixtures of 1,1.1.2-tetrafluoroethane, dimethyl ether and isobutane.
  • the present invention is directed to substantially constant boiling compositions comprising 2.5-95 weight percent, usually 19-39 weight percent, 1,1,1,2-tetrafluoroethane (HFC- 134a), 2.5-95 weight percent, usually 49-69 weight percent, dimethyl ether (DME), and 2.5-50 weight percent, usually 7-17 weight percent, isobutane that are resistant to component segregation.
  • the substantially constant boiling compositions comprise 24-34 weight percent 1,1,1,2-tetraf-uoroethane, 54-64 weight percent dimethyl ether, and 7-17 weight percent isobutane.
  • a particularly preferred composition contains about 29 weight percent 1,1,1,2- tetrafluoroethane, 59 weight percent dimethyl ether, and 12 weight percent isobutane boiling at about 25° C at about 4302 torr.
  • compositions of the present invention exhibit a higher vapor pressure than any of its three constituents.
  • Substantially constant boiling compositions of the present invention means that their vapor pressure at 25° C does not change by more than 10% after half of the initial mixture has been allowed to evaporate.
  • the substantially constant boiling compositions are especially useful as refrigerants, heating applications, aerosol propellants, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes and as power cycle working fluids.
  • HFC-134a (1,1,1,2-tetrafluoroethane)
  • DME dimethyl ether
  • IB isobutane
  • compositions which contain the same components as the true azeotrope, which not only will exhibit substantially equivalent properties as the true azeotrope for refrigerant and other applications, but which will also exhibit substantially equivalent properties to the true azeotropic composition in terms of constant boiling characteristics or tendency not to segregate or fractionate on boiling at other temperatures and pressures.
  • Additives that are frequently incorporated in the mixture that can be added to the present compositions include lubricants, corrosion inhibitors, stabilizers and dyes.
  • novel substantially constant boiling compositions of this invention are also useful as aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes, and as power cycle working fluids.
  • compositions described herein can be used to produce refrigeration by condensing the constant boiling compositions and thereafter evaporating the compositions, e.g., condensate, in the vicinity of a body to be cooled. Further, these compositions described herein can also be used to produce heat by condensing the constant boiling compositions in the vicinity of a body to be heated and thereafter evaporating the compositions.
  • substantially constant boiling compositions of this invention eliminates the problem of component fractionation and handling in system operations because these compositions behave substantially as a single substance.
  • compositions of the present invention have zero ozone depletion potentials compared with Refrigerant-12, which has an ozone depletion potential of 1.0.
  • Vapor Pressure 4302 torr at 25° C.
  • HFC-134a 1,1,1,2-tetrafh ⁇ oroethane
  • DME dimethyl ether
  • Capacity means the change in enthalpy of the refrigerant in the evaporator per pound of refrigerant circulated, i.e., the heat removed by the refrigerant in the evaporator per time.
  • Coefficient of performance means the ratio of the capacity to the compressor work. It is a measure of refrigerant energy efficiency.
  • Capacity is based on a compressor with a fixed displacement of 3.5 cubic feet per minute.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention se rapporte à une composition à point d'ébulition sensiblement constant, qui comprend 2,5 à 95 % en poids de 1,1,1,2-tétrafluoroéthane, 2,5 à 95 % en poids d'éther diméthylique et 2,5 à 50 % en poids d'isobutane.
PCT/US1993/007483 1992-08-21 1993-08-13 Melanges a point d'ebulition sensiblement constant de 1,1,1,2-tetrafluoroethane, d'ether dimethylique et d'isobutane WO1994004629A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94491192A 1992-08-21 1992-08-21
US07/944,911 1992-08-21

Publications (1)

Publication Number Publication Date
WO1994004629A1 true WO1994004629A1 (fr) 1994-03-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/007483 WO1994004629A1 (fr) 1992-08-21 1993-08-13 Melanges a point d'ebulition sensiblement constant de 1,1,1,2-tetrafluoroethane, d'ether dimethylique et d'isobutane

Country Status (1)

Country Link
WO (1) WO1994004629A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0663432A1 (fr) * 1994-01-12 1995-07-19 Cerberus Ag Mélange de gaz pour tester le fonctionnement des détecteurs de fumée
EP0752903A1 (fr) 1994-03-31 1997-01-15 Imperial Chemical Industries Plc Procede d'extraction par solvant
US5811099A (en) * 1991-05-08 1998-09-22 Streck Laboratories, Inc. Method and composition for preserving antigens and process for utilizing cytological material produced by same
KR100261459B1 (ko) * 1997-12-24 2000-07-01 박대치 냉동/공기조화기용 혼합냉매 조성물
WO2006038766A1 (fr) * 2004-08-25 2006-04-13 Yoon-Sik Ham Refrigerant melange de substitution de r502, r12 ou r22 et systeme de refrigeration mettant en oeuvre celui-ci
WO2006121261A1 (fr) * 2005-05-13 2006-11-16 Yoon-Sik Ham Fluide frigorigene melange de substitution a r12 et systeme de refrigeration

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01139675A (ja) * 1987-11-26 1989-06-01 Asahi Glass Co Ltd 作動媒体混合物
WO1991011495A1 (fr) * 1990-02-03 1991-08-08 Boehringer Ingelheim Kg Nouveaux melanges de gaz propulseurs et leur utilisation dans des preparations medicamenteuses
EP0443912A1 (fr) * 1990-02-20 1991-08-28 Elf Atochem S.A. Mélanges de dimethyléther et de 1,1,1,2-tétrafluoroéthane et leurs applications
WO1992017558A1 (fr) * 1991-03-28 1992-10-15 E.I. Du Pont De Nemours And Company Compositions de 1,1,2,2-tetrafluoroethane azeotropiques et analogues a un azeotrope

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01139675A (ja) * 1987-11-26 1989-06-01 Asahi Glass Co Ltd 作動媒体混合物
WO1991011495A1 (fr) * 1990-02-03 1991-08-08 Boehringer Ingelheim Kg Nouveaux melanges de gaz propulseurs et leur utilisation dans des preparations medicamenteuses
EP0443912A1 (fr) * 1990-02-20 1991-08-28 Elf Atochem S.A. Mélanges de dimethyléther et de 1,1,1,2-tétrafluoroéthane et leurs applications
WO1992017558A1 (fr) * 1991-03-28 1992-10-15 E.I. Du Pont De Nemours And Company Compositions de 1,1,2,2-tetrafluoroethane azeotropiques et analogues a un azeotrope

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8928, Derwent World Patents Index; Class E19, AN 89-202050 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5811099A (en) * 1991-05-08 1998-09-22 Streck Laboratories, Inc. Method and composition for preserving antigens and process for utilizing cytological material produced by same
EP0663432A1 (fr) * 1994-01-12 1995-07-19 Cerberus Ag Mélange de gaz pour tester le fonctionnement des détecteurs de fumée
EP0752903A1 (fr) 1994-03-31 1997-01-15 Imperial Chemical Industries Plc Procede d'extraction par solvant
EP0752903B1 (fr) * 1994-03-31 2004-11-24 Ineos Fluor Holdings Limited Procede d'extraction par solvant
KR100261459B1 (ko) * 1997-12-24 2000-07-01 박대치 냉동/공기조화기용 혼합냉매 조성물
WO2006038766A1 (fr) * 2004-08-25 2006-04-13 Yoon-Sik Ham Refrigerant melange de substitution de r502, r12 ou r22 et systeme de refrigeration mettant en oeuvre celui-ci
WO2006121261A1 (fr) * 2005-05-13 2006-11-16 Yoon-Sik Ham Fluide frigorigene melange de substitution a r12 et systeme de refrigeration

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