EP1151054A1 - Compositions de fluides frigorigenes halocarbones contenant des agents hydrocarbones de retour d'huile - Google Patents

Compositions de fluides frigorigenes halocarbones contenant des agents hydrocarbones de retour d'huile

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Publication number
EP1151054A1
EP1151054A1 EP99934019A EP99934019A EP1151054A1 EP 1151054 A1 EP1151054 A1 EP 1151054A1 EP 99934019 A EP99934019 A EP 99934019A EP 99934019 A EP99934019 A EP 99934019A EP 1151054 A1 EP1151054 A1 EP 1151054A1
Authority
EP
European Patent Office
Prior art keywords
hfc
hcfc
chf
oil
cfhcf
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP99934019A
Other languages
German (de)
English (en)
Inventor
Donald Bernard Bivens
Barbara Haviland Minor
Akimichi Yokozeki
Hans O. Di Spauschus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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
Priority claimed from US09/231,847 external-priority patent/US6299792B1/en
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of EP1151054A1 publication Critical patent/EP1151054A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • C09K2205/122—Halogenated 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
    • C09K2205/22—All components of a mixture being fluoro compounds

Definitions

  • the present invention relates to refrigerant compositions containing hydrocarbon oil-return agents which solubilize mineral and synthetic oil lubricants with halogenated hydrocarbon refrigerants, thereby permitting efficient return of lubricants from non-compressor zones back to a compressor zone in a refrigeration system.
  • Hydrochlorofluorocarbon (HCFC) refrigerants are also replacing CFCs, and in instances as mixtures with HFCs. These HCFC-based refrigerant mixtures are less soluble than CFCs in conventional refrigeration lubricants such as mineral oil.
  • a lubricant change from mineral oil to alkylbenzene is often required when the HCFCs or HCFC/HFC mixtures are used to replace pure CFC- based refrigerants, resulting in more expense to the refrigeration industry. Consequently, there is a need and opportunity to resolve this low solubility problem so that the refrigeration industry may utilize HCFC and HCFC/HFC- based refrigerants with mineral oil lubricants.
  • the present invention is directed to a refrigerant composition that satisfies the aforesaid need.
  • the refrigerant composition comprises.(a) a halogenated hydrocarbon containing at least one carbon atom and one fluorine atom; (b) an oil selected from the group consisting of mineral oils and synthetic oils; and (c) a hydrocarbon oil-return agent containing from ten to sixteen carbon atoms.
  • the present invention also relates to a refrigerant composition, comprising: (a) a halogenated hydrocarbon containing at least one carbon atom and one fluorine atom; and (b) a hydrocarbon oil-return agent containing from ten to sixteen carbon atoms.
  • the present invention further relates to a lubricant composition for use with a halogenated hydrocarbon refrigerant in compression refrigeration apparatus, comprising: (a) an oil selected from the group consisting of mineral oils and synthetic oils; and (b) a hydrocarbon oil-return agent containing from ten to sixteen carbon atoms.
  • the present invention pertains to a process for returning oil from a non-compressor zone to a compressor zone in a compression refrigeration system comprising: (a) contacting an oil, selected from the group consisting of mineral oils and synthetic oils, in the non-compressor zone with a halogenated hydrocarbon, containing at least one carbon atom and one fluorine atom, in the presence of a hydrocarbon oil-return agent, containing from six to sixteen carbon atoms, to form a solution comprising oil, halogenated hydrocarbon, and hydrocarbon oil-return agent; and (b) transferring the solution from the non- compressor zone to the compressor zone of the refrigeration system.
  • the present invention relates to refrigerant compositions comprising: (a) a halogenated hydrocarbon containing at least one carbon atom and one fluorine atom; (b) an oil selected from the group consisting of mineral oils and synthetic oils; and (c) a hydrocarbon oil-return agent containing from ten to sixteen carbon atoms, wherein said hydrocarbon oil-return agent forms a solution of said halogenated hydrocarbon and said oil.
  • the present invention further relates to compositions comprising: (a) a halogenated hydrocarbon containing at least one carbon atom and one fluorine atom; and (b) a hydrocarbon oil-return agent containing from ten to sixteen carbon atoms, wherein said hydrocarbon oil-return agent forms a solution of said halogenated hydrocarbon with an oil selected from the group consisting of mineral oils and synthetic oils.
  • the present invention further relates to lubricant compositions for use with halogenated hydrocarbon refrigerants in compression refrigeration apparatus, comprising: (a) an oil selected from the group consisting of mineral oils and synthetic oils; and (b) a hydrocarbon oil-return agent containing from ten to sixteen carbon atoms, wherein said oil-return agent forms a solution of said oil with halogenated hydrocarbon refrigerant.
  • the present invention further relates to a process for returning oil from a non-compressor zone to a compressor zone in a compression refrigeration system comprising: (a) contacting an oil, selected from the group consisting of mineral oils and synthetic oils, in the non-compressor zone with a halogenated hydrocarbon, containing at least one carbon atom and one fluorine atom, in the presence of a hydrocarbon oil-return agent, containing from six to sixteen carbon atoms, to form a solution comprising oil, halogenated hydrocarbon, and hydrocarbon oil-return agent; and (b) transferring the solution from the non- compressor zone to the compressor zone of the refrigeration system.
  • Halogenated hydrocarbons of the present invention contain at least one carbon atom and one fluorine atom.
  • halogenated hydrocarbons having 1-6 carbon atoms containing at least one fluorine atom, optionally containing chlorine and oxygen atoms, and having a normal boiling point of from -90°C to 80°C.
  • normal boiling point is meant the temperature at which a liquid composition's vapor pressure is equal to one atmosphere.
  • halogenated hydrocarbons may be represented by the general formula C w F2w +2 - ⁇ -yH x ClyO z , wherein w is 1-6, x is 1-9, y is 0-3, and z is 0-2.
  • Preferred of the halogenated hydrocarbons are those in which w is 1-6, x is 1-5, y is 0-1, and z is 0-1.
  • Such halogenated hydrocarbons are commercial products available from a number of sources such as E. I. du Pont de Nemours & Co., Fluoroproducts,
  • halogenated hydrocarbons examples include CCI 2 F2 (CFC-12), CHCI 2 F (HCFC-21), CHCIF2 (HCFC-22), CHF 3 (HFC-23), CH 2 C1F (HCFC-31), CH 2 F 2 (HFC-32), CH 3 F (HFC-41), CF 3 CF3 (FC-116), CHC1 2 CF3 (HCFC-123),
  • CHCIFCCIF2 (HCFC-123a), CHCIFCF3 (HCFC-124), CHF 2 CC1F 2 (HCFC-124a), CHF2CF3 (HFC-125), CH2CICF3 (HCFC-133a), CHF 2 CHF 2 (HFC-134), CH2FCF3 (HFC-134a), CC1F 2 CH 3 (HCFC-142b), CHF 2 CH 2 F (HFC-143), CF 3 CH 3 (HFC-143a), CHCIFCH3 (HCFC-151a), CHF 2 CH 3 (HFC-152a), CHF2CCI2CF3 (HCFC-225aa), CHCIFCCIFCF3 (HCFC-225ba), CHF 2 CC1FCC1F 2 (HCFC-225bb), CHC1 2 CF 2 CF 3 (HCFC-225ca), CHC1FCF 2 CC1F 2 (HCFC-225cb), CHF2CF2CCI2F (HCFC-225cc), CC1
  • CHF 2 CHFCF 3 (HFC-236ea), CF 3 CH 2 CF 3 (HFC-236fa), CH 2 FCF 2 CHF 2 (HFC- 245ca), CH 3 CF 2 CF 3 (HFC-245cb), CHF 2 CHFCHF 2 (HFC-245ea), CH 2 FCHFCF 3 (HFC-245eb), CHF 2 CH 2 CF 3 (HFC-245fa), CH 2 FCF 2 CH 2 F (HFC-254ca), CH 2 CF 2 CHF 2 (HFC-254cb), CH 2 FCHFCHF 2 (HFC-254ea), CH3CHFCF 3 (HFC- 254eb), CHF 2 CH 2 CHF 2 (HFC-254fa), CH 2 FCH 2 CF 3 (HFC-254fb), CH 3 CF 2 CH 3 (HFC-272ca), CH 3 CHFCH 2 F (HFC-272ea), CH 2 FCH 2 CH 2 F (HFC-272fa), CH 3 CH 2 CF 2 H
  • halogenated hydrocarbons are: CHC1F 2 (HCFC-22), CHF 3 (HFC-23), CH 2 F 2 (HFC-32), CHCIFCF 3 (HCFC-124), CHF 2 CF 3 (HFC-125), CHF 2 CHF 2 (HFC-134), CH 2 FCF 3 (HFC-134a), CF 3 CH 3 (HFC-143a), CHF 2 CH 3 (HFC-152a), CHF 2 CF 2 CF 3 (HFC- 227ca), CF 3 CFHCF 3 (HFC-227ea), CF 3 CH 2 CF 3 (HFC-236fa), CHF 2 CH 2 CF 3 (HFC-245fa), CHF 2 CF 2 CF 2 CF 2 H (HFC-338pcc), CF 3 CHFCHFCF 2 CF 3 (HFC-43- lOmee), and azeotropic and azeotrope-like halogenated hydrocarbon compositions such as: HCFC-22/HFC
  • the halogenated hydrocarbons of the present invention may further comprise up to 10 weight percent of at least one C 3 to C5 hydrocarbon, e.g., propane, propylene, cyclopropane, n-butane, i-butane, and n-pentane.
  • C 3 to C5 hydrocarbon e.g., propane, propylene, cyclopropane, n-butane, i-butane, and n-pentane.
  • Examples of halogenated hydrocarbons containing such C 3 to C 5 hydrocarbons are azeotrope-like compositions of HCFC-22 HFC-125/propane (R-402A, R-402B) and HCFC-22/octafluoropropane/propane (R-403 A, R-403B).
  • Oils of the present invention are oils conventionally employed as lubricants in refrigeration apparatus with CFC-based refrigerants. Such oils and their properties are discussed in the 1990 ASHRAE Handbook, Refrigeration
  • Oils of the present invention comprise the family of compounds commonly known in this field as mineral oils.
  • Mineral oils comprise paraffins (straight-chain and branched-carbon-chain, saturated hydrocarbons), naphthenes (cycloparaffins), aromatics (unsaturated, cyclic hydrocarbons containing one or more rings characterized by alternating double bonds), and nonhydrocarbons (molecules containing atoms such as sulfur, nitrogen, or oxygen in addition to carbon and hydrogen).
  • Oils of the present invention further comprise the family of compounds commonly known in this field as synthetic oils.
  • Synthetic oils comprise alkylaryls (such as linear and branched-alkyl-chain alkylbenzenes), synthetic paraffins, and polyalphaolefms.
  • alkylaryls such as linear and branched-alkyl-chain alkylbenzenes
  • synthetic paraffins such as linear and branched-alkyl-chain alkylbenzenes
  • polyalphaolefms examples of commercially available lubricant oils of the present invention are Suniso® 3GS, Sontex® 372LT, and Calumet® RO-30 (all previous three being naphthenes), Zerol® 150 (an alkylbenzene), and "BVM 100 N" (a paraffin).
  • hydrocarbon oil-return agents of the present invention are employed in an effective amount in the present inventive compositions such that a solution of halogenated hydrocarbon and lubricating oil is formed.
  • solution is meant that halogenated hydrocarbon and oil become more miscible in the presence of hydrocarbon oil-return agents such that oil is returned as a homogenous solution with halogenated hydrocarbon from non-compressor zones to a compressor zone in a refrigeration system in a quantity, which maintains acceptable compressor lubrication and thus overall refrigeration system operation.
  • compositions comprising halogenated hydrocarbon containing at least one carbon atom and one fluorine atom, oil selected from the group consisting of mineral oils and synthetic oils, and hydrocarbon oil-return agent
  • hydrocarbon oil-return agent it is preferred that less than about 10 weight percent of the total composition is hydrocarbon oil-return agent. In a more preferred sense, less than about 5 weight percent of the total composition (comprising halogenated hydrocarbon, oil, and hydrocarbon oil-return agent) is hydrocarbon oil-return agent.
  • Hydrocarbon oil-return agent concentrations greater than about 10 weight percent of the total composition are typically not needed to obtain adequate oil return and have been observed to negatively influence the viscosity of the lubricating oil leading to inadequate lubrication and stress on, or mechanical failure of, the refrigeration apparatus.
  • Hydrocarbon oil-return agent of the present inventive compositions comprises aliphatic, straight, branched, or cyclic chain hydrocarbons having at least seven carbon atoms and sixteen or less carbon atoms.
  • hydrocarbon oil-return agents are those which are classified as combustible (as opposed to flammable) by ASTM D-93. So-classified combustible hydrocarbons are preferred as oil-return agents as their use in any quantity will not result in flammability being rendered to a refrigeration composition.
  • a preferred hydrocarbon oil-return agent has from seven to sixteen carbon atoms
  • a more preferred hydrocarbon oil-return agent has from eleven to thirteen carbon atoms.
  • a most preferred commercially available compound useful as hydrocarbon oil-return agent is Isopar® H.
  • Isopar® H is a high purity C ⁇ to C 12 iso-parafinic with low aromatics sold by Exxon Chemical, USA. Compounds are typically considered flammable if the flash point is less than 37°C. Though flash points in the table below may be measured by slightly different methods, there is a trend of increasing flash point with carbon chain length. Chain lengths below ten carbon atoms may begin to become flammable.
  • a nonflammable hydrocarbon oil-return-agent or carrier reduces flammability in refrigeration and air conditioning systems versus use of compounds such as propane, butane, isobutane and pentane, disclosed in the art as useful in promoting oil return. Also a larger amount of non-flammable hydrocarbon oil-return-agent than flammable hydrocarbon may be used without effecting system flammability.
  • the present refrigerant compositions comprising halogenated hydrocarbon, oil, and hydrocarbon oil-return agent generally comprise 40-99 weight% halogenated hydrocarbon, 1-60 weight 0 /., oil, and 0.01-10 weight% hydrocarbon oil-return agent, based on the total composition weight. More preferably, such compositions comprise 50-90 weight% halogenated hydrocarbon, 10-50 weight% oil, and 0.01-5 weight% hydrocarbon oil-return-agent.
  • the further present compositions comprising: halogenated hydrocarbon, and hydrocarbon oil-return agent; and oil and hydrocarbon oil-return agent comprise weight ratios of components identical with those found in the present compositions comprising halogenated hydrocarbon, oil, and hydrocarbon oil-return agent.
  • the weight ratio of halogenated hydrocarbon to oil is from about 0.6 (40/60) to about 99 (99/1), and the weight ratio of oil to hydrocarbon oil-return agent is from about 0.1 (1/10) to about 6000 (60/.01).
  • the present invention further comprises processes for producing refrigeration comprising evaporating the present refrigeration compositions in the vicinity of a body to be cooled and processes for producing heat comprising condensing the present refrigeration compositions in the vicinity of a body to be heated.
  • the present invention further relates to processes for solubilizing a halogenated hydrocarbon in an oil comprising contacting the halogenated hydrocarbon with the oil in the presence of an effective amount of hydrocarbon oil-return agent which forms a solution of the halogenated hydrocarbon and the oil, wherein the halogenated hydrocarbon contains at least one carbon atom and one fluorine atom, and the oil is selected from the group consisting of mineral oils and synthetic oils.
  • the present invention further relates to processes for returning oil from a non-compressor zone to a compressor zone in a refrigeration system comprising:
  • the present invention further relates to processes for transferring an oil from a low pressure zone to a compressor zone in a refrigeration system, comprising: (a) contacting the oil in the low pressure zone of the refrigeration system with at least one halogenated hydrocarbon in the presence of an effective amount of a hydrocarbon oil-return agent and
  • Oil return was tested in an oil-return apparatus as follows. Liquid refrigerant was fed from a pressurized cylinder through copper tubing to a heater where it was vaporized. The refrigerant vapor then passed through a pressure regulator and metering valve to control flow at a constant rate of 1,000-1,100 cc per minute and 1 atm pressure. The refrigerant vapor was fed to another copper tube 180 cm in length and 0.635 cm outer diameter formed into a U-shape placed in a constant temperature bath. The U-shaped tube (U-tube) began with a straight vertical section 37 cm long then bent to a horizontal section 27 cm long at the bottom of the bath.
  • the tube then rose vertically in a zig-zag pattern with four 23 cm lengths, followed by another vertical straight section 23 cm long.
  • the U-tube was filled with 10 grams of oil, optionally containing hydrocarbon oil-return agent, which was added to the U-tube through the 37 cm vertical tube. Vapor refrigerant passed slowly through the oil in the U-tube. Refrigerant and oil exiting the U-tube was collected in a receiver and refrigerant allowed to evaporate. Oil was then weighed to determine how much was carried out of the U-tube by the refrigerant.
  • Refrigerant R404A (44 wt% HFC-125, 52 wt% HFC-143a, and 4 wt% HFC- 134a) was placed in the refrigerant cylinder.
  • HAB 22 oil (HAB 22 is a branched alkylbenzene oil sold by Nippon Oil) or HAB plus hydrocarbon oil- return-agent Isopar® H was placed in the copper U-tube, wherein total oil and oil- return agent equaled 10 grams.
  • the constant temperature bath was held at a temperature of -20°C.
  • Refrigerant vapor was fed through the U-tube at a flow rate of 1,100 cubic centimeters per minute and weight of oil in the receiver measured at 6, 10, 20 and 30 minute time intervals.
  • POE 22 polyol ester oil was compared as a baseline to HAB 22. Data are shown in Table 1 below.
  • Example 2 The apparatus and procedure of Example 1 was used to test refrigerant R401 A (53 wt% HCFC-22, 13 wt% HFC-152a and 34 wt% HFC-124). Suniso® 3 GS mineral oil with and without Isopar® H was compared to a baseline of Zerol® 150 alkyl benzene. Results are shown in Table 2.
  • Example 2 The apparatus and procedure of Example 1, with exceptions discussed below, was used to test refrigerant R407C (23 wt% HFC-32, 25 wt% HFC-125and 52 wt% HFC- 134a). Suniso® 3GS mineral oil, with and without hydrocarbon oil return agent Isopar® H, was compared to POE. The constant temperature bath was held at -20°C. Results are shown in Table 3.
  • Example 2 The apparatus and procedure of Example 1, with exceptions discussed below, was used to test refrigerant R404A (44 wt% HFC-125, 52 wt% HFC-143a, and 4 wt% HFC-134a). Suniso® 3GS mineral oil, with and without hydrocarbon oil return agent Isopar® H. was compared to POE. The constant temperature bath was held at -20°C. Results are shown in Table 4.
  • 3GS mineral oil were compared to POE 22 oil at -15°C as shown in Table 5 below.
  • the test method used was ASTM method D446. TABLE 5
  • R404A 44 wt% HFC-125, 52 wt% HFC-143a, and 4 wt% HFC-134a
  • R404A 44 wt% HFC-125, 52 wt% HFC-143a, and 4 wt% HFC-134a
  • the display case was outfitted with a Copeland semi-hermetic reciprocating compressor (Model KAL-016L) equipped with a sight glass in the oil sump.
  • the frozen food case was installed in the indoor room of an environmental chamber and the condensing unit installed in the outdoor room. The two units were connected by 5/8 inch outer diameter copper tubing in the suction line and by 1/2 inch outer diameter copper tubing in the liquid line.
  • a 300 cc sample cylinder was installed between two valves in the liquid line. To determine oil circulation, the valves were closed to trap a refrigerant/oil sample during system operation. The sample cylinder was removed and weighed, refrigerant slowly evaporated, then cylinder reweighed to determine amount of refrigerant. Weight of oil remaining was used to calculate %oil in refrigerant or %oil circulation. Refrigerant R502 (48.8 wt% HCFC-22, 51.2 wt% CFC-115 (chloropentafluoroethane)) with 3GS oil was used as a baseline for comparison.
  • Capacity is intended to mean 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 is intended to mean the ratio of the capacity to compressor work. It is a measure of refrigerant energy efficiency. Results are shown in Table 6. TABLE 6
  • EXAMPLE 7 The Hussmann supermarket frozen food display case of Example 6 was used to study the concentration profile of Isopar® H during system operation. 3GS mineral oil containing 15% Isopar® H was charged to the oil sump and the system was charged with R407C. After 48 hours of operation, the oil located in the oil sump and the oil in the liquid line after the condenser were analyzed for % Isopar® H concentration and a mass balance was calculated as shown in Table 7 below.
  • Isopar® H is volatile enough to be carried out of the oil sump and deposited in the evaporator.
  • the presence of Isopar® H in the evaporator reduces oil viscosity allowing the oil in the evaporator to return to the compressor.
  • the reduction of Isopar® H concentration in the oil sump from 15% to 2.3% keeps oil viscosity sufficiently high in the sump to minimize impact on compressor lubrication.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

L'invention concerne des compositions de fluides frigorigènes contenant des agents hydrocarbonés de retour d'huile qui solubilisent les huiles lubrifiantes minérales ou synthétiques avec des fluides frigorigènes hydrofluorocarbonés et hydrofluorocarbonés/hydrochlorofluorocarbonés. Ces agents hydrocarbonés de retour d'huile, présentant 7 à 16 atomes de carbone, petite partie de la totalité d'une composition de fluide frigorigène, permettent le retour efficace des huiles lubrifiantes minérales et synthétiques, depuis les zones autres que celles du compresseur vers la zone du compresseur, dans un système frigorigène fonctionnant avec des fluides frigorigènes hydrofluorocarbonés et hydrofluorocarbonés/hydrochlorofluorocarbonés.
EP99934019A 1999-01-15 1999-07-14 Compositions de fluides frigorigenes halocarbones contenant des agents hydrocarbones de retour d'huile Withdrawn EP1151054A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US231847 1999-01-15
US09/231,847 US6299792B1 (en) 1998-01-16 1999-01-15 Halogenated hydrocarbon refrigerant compositions containing polymeric oil-return agents
US35171099A 1999-07-12 1999-07-12
US351710 1999-07-12
PCT/US1999/015935 WO2000042118A1 (fr) 1999-01-15 1999-07-14 Compositions de fluides frigorigenes halocarbones contenant des agents hydrocarbones de retour d'huile

Publications (1)

Publication Number Publication Date
EP1151054A1 true EP1151054A1 (fr) 2001-11-07

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EP99934019A Withdrawn EP1151054A1 (fr) 1999-01-15 1999-07-14 Compositions de fluides frigorigenes halocarbones contenant des agents hydrocarbones de retour d'huile

Country Status (7)

Country Link
EP (1) EP1151054A1 (fr)
JP (1) JP2002534578A (fr)
CN (1) CN1210368C (fr)
AU (1) AU772143B2 (fr)
BR (1) BR9917321A (fr)
CA (1) CA2359090A1 (fr)
WO (1) WO2000042118A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0105065D0 (en) * 2001-03-01 2001-04-18 Ici Plc Lubricant compositions
US6759374B2 (en) * 2001-09-19 2004-07-06 3M Innovative Properties Company Composition comprising lubricious additive for cutting or abrasive working and a method therefor
US8999191B2 (en) 2013-03-15 2015-04-07 National Refrigerants, Inc. R22 replacement refrigerant

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5072067A (en) * 1988-11-15 1991-12-10 Idemitsu Kosan Company Limited Lubricating oil composition
CA2021916A1 (fr) * 1989-09-07 1991-03-08 Harry N. Cripps Composition et procede, utilises en refrigeration
CA2117439C (fr) * 1992-01-23 2004-04-20 Pieter J. D. Muntz Composition d'huile lubrifiante
EP1028152A3 (fr) * 1993-02-05 2005-06-15 E.I. Du Pont De Nemours And Company Compositions constituées d'un hydrofluorocarbure et d'un hydrocarbure
US5611210A (en) * 1993-03-05 1997-03-18 Ikon Corporation Fluoroiodocarbon blends as CFC and halon replacements
WO1996036688A1 (fr) * 1995-05-16 1996-11-21 Minnesota Mining And Manufacturing Company Compositions du type azeotrope et leurs applications

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0042118A1 *

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WO2000042118A1 (fr) 2000-07-20
JP2002534578A (ja) 2002-10-15
CN1210368C (zh) 2005-07-13
AU4994299A (en) 2000-08-01
AU772143B2 (en) 2004-04-08
CA2359090A1 (fr) 2000-07-20
CN1333806A (zh) 2002-01-30
BR9917321A (pt) 2002-04-23

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