WO2001096505A1 - Huile de lubrification pour machines frigorifiques et composition hydraulique contenant cette derniere, utilisee dans une machine frigorifique - Google Patents
Huile de lubrification pour machines frigorifiques et composition hydraulique contenant cette derniere, utilisee dans une machine frigorifique Download PDFInfo
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- WO2001096505A1 WO2001096505A1 PCT/JP2001/005119 JP0105119W WO0196505A1 WO 2001096505 A1 WO2001096505 A1 WO 2001096505A1 JP 0105119 W JP0105119 W JP 0105119W WO 0196505 A1 WO0196505 A1 WO 0196505A1
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
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- 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
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/42—Complex esters, i.e. compounds containing at least three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compound: monohydroxy compounds, polyhydroxy compounds, monocarboxylic acids, polycarboxylic acids and hydroxy carboxylic acids
- C10M105/46—Complex esters, i.e. compounds containing at least three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compound: monohydroxy compounds, polyhydroxy compounds, monocarboxylic acids, polycarboxylic acids and hydroxy carboxylic acids derived from the combination of monohydroxy compounds, dihydroxy compounds and dicarboxylic acids only and having no free hydroxy or carboxyl groups
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/48—Esters of carbonic acid
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
- C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
- C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
- C10M107/34—Polyoxyalkylenes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/008—Lubricant compositions compatible with refrigerants
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- 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
- C09K2205/24—Only one single fluoro component present
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/32—Esters of carbonic acid
- C10M2207/325—Esters of carbonic acid used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/11—Complex polyesters
- C10M2209/112—Complex polyesters having dihydric acid centres
- C10M2209/1125—Complex polyesters having dihydric acid centres used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
- C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/09—Characteristics associated with water
- C10N2020/097—Refrigerants
- C10N2020/101—Containing Hydrofluorocarbons
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/40—Low content or no content compositions
- C10N2030/41—Chlorine free or low chlorine content compositions
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/30—Refrigerators lubricants or compressors lubricants
Definitions
- the present invention relates to a lubricating oil for a refrigerator and a working fluid composition for the refrigerator using the same. More specifically, the present invention relates to a refrigerant for refrigeration, which exhibits excellent compatibility with chlorine-free refrigerants having 1 carbon atom, particularly difluoromethane, and a lubricant for refrigeration and the refrigerant. The present invention relates to a working fluid composition for a refrigerator having excellent wear resistance, lubricating properties and stability. Background art
- a compression refrigerator is composed of at least a compressor, a condenser, an expansion mechanism (such as an expansion valve), an evaporator, or a dryer, and a liquid mixture of refrigerant and lubricating oil flows through the closed system. It has a circulating structure.
- the temperature inside the compressor is high and the temperature inside the cooler is low, so that the refrigerant and lubricating oil have a wide temperature range from low to high. It is necessary to circulate through this system without phase separation.
- the maximum temperature of the separation region on the low temperature side is desirably 10 ° C. or lower, and preferably 120 ° C. or lower.
- phase separation occurs during operation of the refrigerator, the life and efficiency of the equipment will be adversely affected. For example, if phase separation occurs between the refrigerant and the lubricating oil in the compressor section, the moving parts will have poor lubrication, causing seizures, etc., significantly shortening the life of the device, while phase separation will occur in the evaporator As a result, the presence of lubricating oil having a high viscosity causes a reduction in heat exchange efficiency.
- chlorodifluoromethane hereinafter referred to as R 2
- R502 chlorodifluoromethane
- various mineral oils and synthetic oils satisfying the above-mentioned required characteristics have been used as lubricating oils.
- R22 and R502 which may cause environmental pollution such as destruction of the ozone layer in the stratosphere, has recently become more stringent worldwide.
- R32 difluoromethane
- the present invention provides a lubricating oil for a refrigerator that exhibits excellent compatibility with a chlorine-free refrigerant having 1 carbon atom, particularly difluoromedan (R32), and a lubricating oil for the refrigerator. And the above refrigerant, wear resistance, moisture An object of the present invention is to provide a working fluid composition for a refrigerator having excellent lubrication characteristics and stability.
- the present inventors have studied the compatibility of a polyester compound such as a polyoxyalkylene glycol derivative or a polyvinyl ether derivative, or an oxygen-containing compound such as a polyol ester derivative in an R32 refrigerant atmosphere. However, these compounds did not always have sufficient compatibility with R32. Disclosure of the invention
- the inventors of the present invention have conducted further intensive studies. It has excellent compatibility with the refrigerant of the formula (1), particularly R32, and that this and the refrigerant containing the refrigerant can be suitable for the above purpose as a working fluid composition for a refrigerator. I found it. The present invention has been completed based on such findings.
- the present 3 ⁇ 4 Ming a containing oxygenates refrigeration lubrication oil as a base oil, to the refrigerant of 1 carbon atoms having no chlorine,-out based on the total amount 3-5 0 weight 0 / o range
- the lubricating oil for refrigerators is characterized by being compatible at a temperature of 110 ° C or less at any one of the content rates, particularly the oxygen-containing compound.
- a lubricating oil for refrigerators which is a polycarbonate compound having two or more carbonate bonds in one molecule.
- the present invention also provides a working fluid composition for a refrigerator, comprising (A) a chlorine-free refrigerant having 1 carbon atom and (B) the lubricating oil for a refrigerator as essential components. Things.
- the lubricating oil for a refrigerator according to the present invention is used under the conditions of using a chlorine-free refrigerant having 1 carbon atom, particularly a fluorinated hydrocarbon-based refrigerant containing no chlorine.
- the internal pressure is high and the operating temperature tends to be high. Therefore, if necessary the hardness difference between the members forming the metal sliding portion of the compressor structure is set to 1 0 or more H RC equivalent, the side of a small member of hardness normal resistance of O connection conventional hardness
- the wear resistance of the required parts of the metal sliding part is improved, and the fluorocarbon refrigerant can be used. It does not contain chlorine and provides resistance to the lack of lubrication.
- the sliding member on the higher hardness side tends to promote the wear of the sliding member on the lower hardness side depends on the phosphoric acid ester, the phosphorous ester, and the acidic phosphoric acid ester. At least one of them has been added, and it is thought that their work as extreme pressure agents compensates for the lack of lubrication due to the fact that the fluorohydrocarbon-based refrigerant does not contain chlorine.
- FIG. 1 is a flowchart showing an example of a compression refrigeration cycle of “compressor—condenser—expansion valve—evaporator” having an oil separator and a hot gas line.
- FIG. 2 is a flowchart showing an example of a compression refrigeration cycle of “compressor-condenser-expansion valve-evaporator” having an oil separator.
- FIG. 3 is a flowchart showing an example of a compression refrigeration cycle of “compressor-condenser-expansion valve-evaporator” having a hot gas line.
- FIG. 4 is a flow chart showing an example of a compression-type refrigeration cycle composed of a general “compressor-condenser-expansion valve-evaporator”.
- 1 is a compressor
- 2 is a condenser
- 3 is an expansion valve
- 4 is an evaporator
- 5 is an oil separator
- 6 is a hot gas line
- 7 is a hot gas line valve.
- the lubricating oil for refrigerators of the present invention contains an oxygen-containing compound as a base oil, and is 3 to 50% by weight based on the total amount of a chlorine-free refrigerant having 1 carbon atom, for example, R32. If it is contained within the range, it is compatible at a temperature of-10 ° C or less (the liquid phase is uniform) at any one of the contents.
- one 1 0 content of ° lubricating oil C below the temperature and the lubricating oil and can miscible refrigerant may but if any of the 3-5 0% by weight, preferably from 1 0 wt 0 / 0 or 15% by weight, particularly preferably in the entire range of 3 to 50% by weight. If the compatibility temperature, that is, the low-temperature two-layer separation temperature exceeds 110 ° C., phase separation may occur during operation of the refrigerator.
- phase separation occurs during operation of the refrigerator, the life and efficiency of the equipment will be significantly adversely affected. For example, if phase separation occurs between the refrigerant and the lubricating oil in the compressor, the moving parts will have poor lubrication, causing seizures, etc., significantly shortening the life of the device. The presence of lubricating oil with high viscosity results in reduced heat exchange efficiency.
- the maximum temperature of the low-temperature side separation region is preferably ⁇ 10 ° C. or lower, and more preferably 120 ° C. or lower. It is more preferably at most 130 t, still more preferably at most 140 ° C, most preferably at most -50 ° C. '
- Z is a hydroxyl group removed from an n-valent alcohol having 1 to 12 carbon atoms.
- R 1 is a linear or branched alkylene group having 2 to 10 carbon atoms
- R 2 is a monovalent hydrocarbon group having 1 to 12 carbon atoms
- R 4 (0—R 3 ) P —
- R 4 is a hydrogen atom or a monovalent hydrocarbon group having 1 to 12 carbon atoms
- R 3 is a linear or branched alkylene group having 2 to 10 carbon atoms
- p is an integer of 1 to 10
- k is an integer of 1 to 30
- m is an integer of 1 to 50
- n is an integer of 1 to 6.
- ⁇ a compound represented by the general formula ( ⁇ )
- R 5 is a linear or branched alkylene group having 2 to 10 carbon atoms; q is an integer of 1 to 20; Z, R 1 , R 2 , k, m and n are as defined above) It is the same.
- Z is a residue obtained by removing a hydroxyl group from a monovalent to hexavalent alcohol having 1 to 12 carbon atoms, and particularly a residue having 1 to 12 carbon atoms.
- a residue obtained by removing a hydroxyl group from a monovalent alcohol is preferred.
- Examples of the monohydric to hexahydric alcohol having 1 to 12 carbon atoms having Z as a residue include monohydric alcohols such as methyl alcohol, ethyl alcohol, n- or isopropyl alcohol, various butyl alcohols, Aliphatic alcohols such as various pentyl alcohols, various hexyl alcohols, various octyl alcohols, various decyl alcohols, various dodecyl alcohols, alicyclic monohydric alcohols such as cyclopentyl alcohol, cyclohexyl alcohol, fuynol, cresolone Aromatic alcohols such as benzyl, xylenol, butylphenol, and naphthol; and araliphatic alcohols such as benzyl alcohol and phenethyl alcohol; as dihydric alcohols such as ethylene glycol, Customer 05119
- Aliphatic alcohols such as propylene glycol, butylene glycol, neopentylene glycol and tetramethylene glycol, alicyclic alcohols such as cyclohexanediol and cyclohexanedimethanol, catechol, resorcinol, Aromatic alcohols such as hydridoquinone and dihydroxydiphenyl, and trihydric alcohols such as glycerin and trimethylolprono.
- Trimethylolethane trimethylolbutane
- aliphatic alcohols such as 1,3,5-pentantriol
- cycloaliphatic alcohols such as cyclohexanetriol and cyclohexanetrimethanol
- aromatic alcohols such as methylpyrogallol and the like as tetrahydric to hexahydric alcohols, for example, aliphatic alcohols such as pentaerythritol, diglycerin, triglycerin, sorbitol and dipentaerythritol. Can be mentioned.
- a compound represented by the general formula (I) may be a compound represented by the general formula (Ia):
- R 6 is a residue obtained by removing a hydroxyl group from a monohydric alcohol having 1 to 12 carbon atoms, and R 1 , R 2 , k, and m are the same as described above.
- Formula (I one a) and the general formula (1 1-a) is a residue obtained by removing hydroxyl groups from monohydric alcohols having a carbon number of 1 to 1 2 for R 6, a methyl group, Echiru Groups, n-propyl group, isopropyl group, various butyl groups, various pentyl groups, various hexyl groups, various octyl groups, various decyl groups, various dodecyl groups, and other aliphatic hydrocarbon groups, cyclopentyl groups, cyclohexyl groups, Alicyclic hydrocarbon groups such as methylcyclohexyl group, dimethylcyclohexyl group, decahydronaphthyl group, aromatic hydrocarbon groups such as phenyl group, various tolyl groups, various xylyl groups, mesityl group, various naphthyl groups And araliphatic hydrocarbon groups such as benzyl group, methylbenzyl group, phene
- R 1 is a linear or branched alkylene group having 2 to 10 carbon atoms, and among them, those having 2 to 6 carbon atoms are preferable.Ethylene group and propylene group are particularly preferable in terms of performance and ease of production. It is preferable from the point.
- R 2 is a monovalent hydrocarbon group having 1 to 12 carbon atoms or R 4 (0-R 3 ) p-(where R 4 is a hydrogen atom or 1 to 12 carbon atoms, preferably 1 monovalent hydrocarbon groups of ⁇ 6, R 3 is an ether formation. Go represented by linear or branched alkylene group.
- the monovalent hydrocarbon group having 1 to 12 carbon atoms is the same as those exemplified in the description of R 6 .
- the linear or branched alkylene group having 2 to 10 carbon atoms represented by R 3 one having 2 to 6 carbon atoms is preferable for the same reason as in the case of R ′, and in particular, Ethylene and propylene groups are preferred.
- R 2 a linear or branched alkyl group having 1 to 6 carbon atoms is particularly preferable.
- the straight-chain or branched alkylene group having 2 to 10 carbon atoms represented by R 5 is the same as the above-described R 1. For this reason, those having 2 'to 6 carbon atoms are preferable, and an ethylene group and a propylene group are particularly preferable.
- Such a polycarbonate compound can be produced by various methods, and is usually reacted with an ester-forming derivative such as diester carbonate or phosgene using an alkylene glycol or a polyoxyalkylene glycol according to a known method. By doing so, the desired polycarbonate compound can be produced.
- an ester-forming derivative such as diester carbonate or phosgene using an alkylene glycol or a polyoxyalkylene glycol according to a known method.
- the lubricating oil for a refrigerator according to the present invention may contain one kind of the polycarbonate compound represented by the general formula ( ⁇ ), or may contain two or more kinds thereof. ) May be contained, or two or more of them may be contained. Alternatively, it may contain one or more polycarbonate compounds represented by the general formula (I) and one or more polycarbonate compounds represented by the general formula (II).
- other oxygen-containing compounds for example, a polyether compound such as a polyoxyalkylene glycol derivative / polyvinyl ester derivative, or a polyester derivative may be contained as long as the object of the present invention is not impaired.
- the lubricating oil for refrigerators of the present invention preferably has a kinematic viscosity at 40 ° C. in the range of 2 to 200 mm Vs, more preferably 5 to 150 mm 2 / s, particularly 10 to 100 mm Vs. Those in the range of 1000 mm 2 / s are preferred.
- the lubricating oil for refrigerators of the present invention preferably contains an acid scavenger, an extreme pressure agent, an oil agent, and an antioxidant. .
- Examples of the acid scavenger include glycidyl ether group-containing compounds, epoxidized fatty acid monoesters, epoxidized oils and fats, and epoxycycloalkyl group-containing compounds.
- Examples of extreme pressure agents include monosulfides, polysulfides, sulfoxides, sulfones, thiosulfinates, sulfurized fats and oils, thiocarbonates, and thiophene.
- Organic sulfur compounds such as sulfonic acids, thiazoles, methanesulfonic acid esters, etc., phosphoric acid monoesters, phosphoric acid diesters, phosphoric acid triesters (tricresyl phosphate) Phosphite esters such as phosphites, etc .; phosphite esters such as phosphite monoesters, phosphite diesters, phosphite triesters, etc .; Thiolates such as acid triesters, higher fatty acids, hydroxyaryl fatty acids, esters such as polyhydric alcohol esters and acrylates, chlorinated hydrocarbons, chlorinated carpone Organic chlorine-based compounds such as acid derivatives, fluorinated aliphatic carboxylic acids, fluorinated polyethylene resins, fluorinated alkyl polysiloxanes, fluorinated graphite, etc.
- Organic fluorinated alcohols alcohols such as higher alcohols, naphthenates (lead naphthenate, etc.), fatty acid salts (lead fatty acid, etc.), thiolates (zinc dialkyldithiophosphate) ), Metal compounds such as thiocarbamates, organic molybdenum compounds, organic tin compounds, organic germanium compounds and borates.
- the antioxidant include phenol-based compounds such as 2,6-di-tert-butyl-p-cresol and amine-based compounds such as ⁇ -naphthylamine.
- oily agent examples include etherified compounds of (X) tri- to hexa-valent aliphatic polyhydric alcohols and di- or tri-molecular condensates of (y) tri- to hexa-valent aliphatic poly-alcohols. Preferred are etherified products of the above.
- the (X) component and the (y) component will be described.
- the etherified product of the aliphatic polyhydric alcohol having a trivalent to hexavalent (X) component for example, those represented by the following general formulas (XVIII-a) to 0 (V1I1-f) are preferable. is there..
- R 53 to R 58 each represent a hydrogen atom or a linear or branched alkyl group having 1 to 18 carbon atoms, and an aryl group represents an aralkyl group. Is also good.
- R a 0) x one R b R a is an alkylene group having 2 to 6 carbon atoms, R b is an alkyl group, an aryl group or an aralkyl group having 1 to 20 carbon atoms, and X is 1 to 1 Represents an integer of 0. represents a glycol ether residue represented by).
- tri- to hexa-valent aliphatic polyhydric alcohols include glycerin, trimethylolprono, and the like. Erythritol, pendulum erythritol, arabitol, sorbitol, mannitol and the like.
- R 53 to R 58 are, for example, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, various butyl groups, various pentyl groups, Various hexyl groups, various heptyl groups, various octyl groups, various nonyl groups, various decyl groups, various decyl groups, each Examples include various dodecyl groups, various tridecyl groups, various tetradecyl groups, various pendecyl groups, various hexadecyl groups, various heptane decyl groups, various octadecyl groups, phenyl groups, and benzyl groups.
- a hydrogen atom that is, a partially etherified product is also included.
- the etherified product of the bimolecular or trimolecular condensate of the tri- to hexavalent aliphatic polyhydric alcohol of the component (y) for example, the etherified product of the alcohol corresponding to the general formula (XVIII-a) is —
- the etherified product of the alcohol represented by the general formulas (XVIII—g) and (XVIII-h) and the general formula (XVIII—d) is represented by the general formulas (XV11I—i) and (XVIII—j) .
- R 53 to R 6 ° is the same as R 53 to R 58 , and they may be the same or different.
- di- and tri-molecular condensates of aliphatic polyhydric alcohols having 3 to 6 valences include diglycerin, ditrimethylol-l-mouth bread, dinyl erythritol, disorbitol, and Liglycerin, tritrimethylolpropane, tripentaerythritol, trisorbitol and the like can be mentioned.
- (X), (y) represented by the general formulas (XVIII-a) to (XVI II-j)
- Specific examples of the components include trihexyl ether of glycerin, dimethyloctyl triether of glycerin, di (methyloxyisopropylene) dodecyl triether of glycerin, and diphenyl octyl tilt of glycerin.
- glycerin di (phenyloxyisopropylene) dodecyl triether trimethylolpropane trihexyl ether, trimethylolpropane dimethyloctyltriester, trimethylolpropane Di (methyloxyisopropylene) dodecyl triether, tetrahexyl ether of pentaerythritol, trimethyloctylte tracer of pentaerythritol, tri (methyloxyisopropylene) dodecylte of pentaerythritol Tiger, d Hexapropyl ether of sorbitol, Tetramethyloctyl pentaether of sorbitol, Hexa (methyloxyisopropylene) ether of sorbitol, Tetrab ethyl ether of diglycerin, Diglycerol Dimethyldioctyl tetraether of triglycerin,
- glycerin diphenyloctyltriester trimethylolprono
- the kinematic viscosity of the components (X) and (y) at 40 ° C. is in the range of 5 to 200 mm 2 / s, preferably 10 to 100 mm 2 / s. If it is less than 5 mm 2 / s, the effect of improving lubricity and the effect of preventing clogging are small, and if it exceeds 200 mm 2 / s, the compatibility with the refrigerant (two-layer separation temperature) is undesirably reduced.
- one of the aforementioned components (X) and (y) may be used alone, or two or more of them may be used in combination. Further, the amount thereof, based on the total amount of the composition 0.
- the amount is less than 0.1% by weight, the object of the present invention is not sufficiently exhibited.
- the amount exceeds 30% by weight, the effect is not improved for the amount, and the solubility in the base oil is poor. May fall.
- a more preferred amount is in the range of 0.1 to 15% by weight, and particularly preferably in the range of 0.5 to 10% by weight.
- the lubricating oil for refrigerators of the present invention includes other additives conventionally used in lubricating oils, such as metal deactivators, defoamers, detergents / dispersants, viscosity index improvers, oiliness agents, and abrasion resistance. Additives, anti-corrosives, corrosion inhibitors, pour point depressants, etc. can be included as desired. Benzotriazole derivatives and the like as metal deactivators, silicone oil (dimethylpolysiloxane, etc.) and polymethacrylates as defoamers, and sulfonates as detergents and dispersants. , Phthalates, succinic acid imids, and the like.
- the viscosity index improver include polymethacrylate, polyisobutylene, an ethylene-propylene copolymer, and a styrene-gen hydrogenated copolymer.
- the working fluid composition for a refrigerator of the present invention contains (a) a refrigerant having no chlorine and having 1 carbon number, and (port) the lubricating oil for a refrigerator of the present invention described above.
- Difluoromethane (R32) can be cited as an example of the refrigerant having one component and no chlorine and having no carbon as the component (a).
- the content ratio of the (ii) component and the (mouth) component is usually selected in a weight ratio of 5:95 to 99: 1, preferably 10:90 to 99: 1. . If the amount of the refrigerant is less than the above range, the refrigerating capacity is reduced, and if it is more than the above range, the lubricating performance is undesirably reduced.
- the lubricating oil composition for a refrigerator of the present invention can be used for various refrigerators, but is particularly preferably applied to a compression refrigeration cycle of a compression refrigerator.
- a compression refrigeration cycle of a compression refrigerator for example, Japanese Unexamined Patent Publications Nos. 4-183,788, 8-259,795, 8-240,362, 8-252,779 Official gazettes, JP-A-8-24032, JP-A-5-17792, JP-A-8226671, JP-A-231-2972, etc.
- the lubricating oil composition for a refrigerator according to the present invention is, for example, a compression type having an oil separator and / or a hot gas line as shown in each of the attached FIGS. Even when applied to a refrigeration cycle, the effect is exhibited effectively.
- a compression refrigeration cycle consists of a compressor, a condenser, an expansion valve, and an evaporator.
- lubricating oil for refrigerators has good compatibility with the refrigerant used in refrigerators.
- a refrigerant mainly containing the component (A) is used in the above refrigeration cycle, When lubricated with the used refrigerating machine oil, the wear resistance was insufficient or the stability was insufficient, so that long-term stable use was not possible. In particular, this tendency is remarkable when using a capillary tube as an expansion valve, such as a refrigeration cycle of an electric refrigerator or a small air conditioner.
- the refrigerating machine oil of the present invention is effective as a refrigerating machine oil composition even when a compression type refrigerating cycle having an oil separator and / or a hot gas line is operated using a refrigerant mainly comprising the component (A). It is.
- the compatibility between the component (A) and the component (B) is extremely good, and particularly, the maximum temperature of the low-temperature side separation region is 110 ° C. or less. Yes, preferably at most 120 t, more preferably at most 130 ° C, even more preferably at most 140 ° C, most preferably at most 150 ° C.
- the working fluid composition for a refrigerator according to the present invention has a maximum temperature of 110 ° C. or lower in the separation region on the low temperature side, and therefore, phase separation occurs on the low temperature side during operation of the refrigerator. Without the above, stable operation of the refrigerator is possible.
- the toluene solution of the obtained product was purified water 300 Washing with Milliliter 5 times made the washing water no longer show any strength.
- the toluene was completely distilled off under reduced pressure at 120 t for 30 minutes at 130 t, and under reduced pressure of a vacuum pump at 130 Pa for 30 minutes. Leaving, the object, 299.5 g of a polycarbonate (terminal methyl form) of dipropylene glycol represented by the following formula was obtained.
- Production Example 1 is the same as Production Example 1 except that dipropylene glycol 268.8 g was replaced by 3-methyl-1,5-pentanediol 236.3 g (2.0 mol). In the same way as in
- the reaction was carried out while reducing the pressure to 10 kPa with an aspirator while maintaining the temperature at I 60 ° C, while distilling off remaining di-n-butyl carbonate. After stopping the heating and returning to normal pressure, 300 milliliters of toluene was added. The toluene solution of the obtained product was washed five times with 200 milliliters of pure water, and the washing water no longer showed an alkaline property. Next, the toluene was completely distilled off using a rotary evaporator under reduced pressure at 130 ° C for 30 minutes at 130 ° C, and then under reduced pressure of a vacuum pump for 13 minutes at 130Fa. , The object,
- diethylene glycol mono-n-butyl ether 12.9. 8 g (0.8 mol) dimethyl carbonate 433.3 g (4.8 mol), dipropylene glycol 24.7 g (1-6 mol), catalyzed 28% by weight
- reaction temperature was gradually increased, and the temperature was raised to 140 ° C. over 2 hours to proceed the reaction while distilling off remaining dimethyl carbonate.
- the heating was stopped, and toluene 500 milliliters was added to obtain a toluene solution of the product.
- This toluene solution is washed five times with 300 milliliters of pure water, so that the washing water no longer exhibits an alkaline property.
- the toluene was completely distilled off using a rotary evaporator under reduced pressure of the aspirator at 130 ° C for 30 minutes at 130 ° C, and then reduced pressure of the vacuum pump for 30 minutes at 133 Pa.
- dimethyl carbonate 360.6 g (4.0 mol), dipropylene glycol 26.8.8 g (2.0 mol), and 28% by weight sodium methoxide as a catalyst 3.9 g (0.02 mol) of a methanol solution of the above, and heating at 10 ° C for 5 hours in an oil bath while flowing nitrogen gas at 50 milliliter / min. did. Thereafter, the pressure was gradually reduced to about 2.7 kPa with an aspirator, and the reaction was continued for 1 hour while distilling off remaining dimethyl carbonate. Toluene 50 O m 1 was added and post-treatment was carried out in the same manner as in Production Example 1 to obtain 2 ′ 88 g of the target product, dipropylene glycol polycarbonate (methyl terminal form) 2 As well as high proprietary
- the kinematic viscosity, the two-layer separation temperature, the lubricating property, and the stability were determined for the poly-component compounds obtained in Production Examples 1 to 4 according to the following methods. The results are shown in Table 1-11.
- the kinematic viscosity and viscosity index of the base oil and various properties of the lubricating oil were determined according to the following procedures.
- a predetermined amount of the sample was added to the pressure-resistant glass sample, and this was connected to a vacuum pipe and a difluoromethane (R32) refrigerant pipe. After the sample was degassed at room temperature, it was cooled and a predetermined amount of difluoromethane (R32) refrigerant was collected. Next, the ampoule was sealed, and the temperature at which phase separation started was measured by gradually cooling the room temperature from room temperature to 150 "C in a constant temperature bath for the compatibility at the low temperature side. The lower is, the better.
- the seizure load was determined using a closed type friction tester in accordance with the ASTM and D-3233 method.
- the test conditions were as follows: oil volume 30 Oml, refrigerant R32, pressure 0.8MPaG, temperature 50. C.
- the weight% at the two-layer separation temperature is the value of [sample / (sample + R32)] X00.
- the lubricating oil for refrigerators of the present invention exhibits excellent compatibility with chlorine-free refrigerants having 1 carbon atom, especially difluoromethane.
- the working fluid composition for a refrigerator of the present invention containing the lubricating oil for a refrigerator of the present invention and the refrigerant is excellent in wear resistance, lubricating properties, stability and the like.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Emergency Medicine (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Lubricants (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002510625A JPWO2001096505A1 (ja) | 2000-06-15 | 2001-06-15 | 冷凍機用潤滑油及びそれを用いた冷凍機用作動流体組成物 |
EP01941067A EP1300459A4 (en) | 2000-06-15 | 2001-06-15 | LUBRICATING OIL FOR REFRIGERATING MACHINES AND HYDRAULIC COMPOSITIONS CONTAINING THEREOF FOR USE IN REFRIGERATING MACHINES |
US10/297,595 US20040167042A1 (en) | 2000-06-15 | 2001-06-15 | Lubricating oil for refrigerating machine and hydraulic composition containing the same for use in refrigerating machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2000179303 | 2000-06-15 | ||
JP2000-179303 | 2000-06-15 |
Publications (1)
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WO2001096505A1 true WO2001096505A1 (fr) | 2001-12-20 |
Family
ID=18680595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/005119 WO2001096505A1 (fr) | 2000-06-15 | 2001-06-15 | Huile de lubrification pour machines frigorifiques et composition hydraulique contenant cette derniere, utilisee dans une machine frigorifique |
Country Status (6)
Country | Link |
---|---|
US (1) | US20040167042A1 (ja) |
EP (1) | EP1300459A4 (ja) |
JP (1) | JPWO2001096505A1 (ja) |
KR (1) | KR20030007971A (ja) |
TW (1) | TWI289600B (ja) |
WO (1) | WO2001096505A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019194195A1 (ja) * | 2018-04-02 | 2019-10-10 | Jxtgエネルギー株式会社 | 冷凍機、冷凍機油及び冷凍機用作動流体組成物 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7052626B1 (en) * | 1989-12-28 | 2006-05-30 | Nippon Mitsubishi Oil Corporation | Fluid compositions containing refrigeration oils and chlorine-free fluorocarbon refrigerants |
JP4460085B2 (ja) * | 1999-07-06 | 2010-05-12 | 出光興産株式会社 | 二酸化炭素冷媒用冷凍機油組成物 |
JP4603117B2 (ja) * | 1999-12-28 | 2010-12-22 | 出光興産株式会社 | 自然系冷媒用冷凍機油組成物 |
JP7032043B2 (ja) * | 2016-12-20 | 2022-03-08 | 出光興産株式会社 | 冷凍機油、及び冷凍機用組成物 |
Citations (7)
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JPH03217495A (ja) * | 1990-01-23 | 1991-09-25 | Idemitsu Kosan Co Ltd | ポリカ―ボネート系合成潤滑油 |
EP0452816A2 (en) * | 1990-04-20 | 1991-10-23 | Nippon Oil Co. Ltd. | Use of synthetic lubricating oils in refrigerators |
EP0499793A1 (en) * | 1991-01-18 | 1992-08-26 | Nippon Oil Co., Ltd. | Synthetic lubricating oils |
JPH069977A (ja) * | 1992-06-24 | 1994-01-18 | Kao Corp | 冷凍機作動流体用組成物 |
JPH0967589A (ja) * | 1995-09-04 | 1997-03-11 | Kao Corp | 冷凍機作動流体用組成物 |
JPH1112585A (ja) * | 1997-06-26 | 1999-01-19 | Kao Corp | 冷凍機油及び冷凍機作動流体用組成物 |
JP2000008062A (ja) * | 1998-06-22 | 2000-01-11 | Mitsui Chemicals Inc | 冷凍機用冷媒組成物 |
Family Cites Families (5)
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JP3983328B2 (ja) * | 1996-04-26 | 2007-09-26 | 出光興産株式会社 | 冷凍機油組成物 |
TW546372B (en) * | 1998-12-11 | 2003-08-11 | Idemitsu Kosan Co | Refrigerator oil composition, and method of using the composition for lubrication |
JP4460085B2 (ja) * | 1999-07-06 | 2010-05-12 | 出光興産株式会社 | 二酸化炭素冷媒用冷凍機油組成物 |
JP4456708B2 (ja) * | 1999-12-28 | 2010-04-28 | 出光興産株式会社 | 環状有機リン化合物を含有する潤滑油組成物 |
KR100733182B1 (ko) * | 2000-07-26 | 2007-06-27 | 이데미쓰 고산 가부시키가이샤 | 냉동기용 윤활유 및 이를 포함하는 냉동기용 작동유체조성물 |
-
2001
- 2001-06-15 JP JP2002510625A patent/JPWO2001096505A1/ja not_active Withdrawn
- 2001-06-15 KR KR1020027017118A patent/KR20030007971A/ko active IP Right Grant
- 2001-06-15 US US10/297,595 patent/US20040167042A1/en not_active Abandoned
- 2001-06-15 EP EP01941067A patent/EP1300459A4/en not_active Withdrawn
- 2001-06-15 TW TW090114777A patent/TWI289600B/zh not_active IP Right Cessation
- 2001-06-15 WO PCT/JP2001/005119 patent/WO2001096505A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH03217495A (ja) * | 1990-01-23 | 1991-09-25 | Idemitsu Kosan Co Ltd | ポリカ―ボネート系合成潤滑油 |
EP0452816A2 (en) * | 1990-04-20 | 1991-10-23 | Nippon Oil Co. Ltd. | Use of synthetic lubricating oils in refrigerators |
EP0499793A1 (en) * | 1991-01-18 | 1992-08-26 | Nippon Oil Co., Ltd. | Synthetic lubricating oils |
JPH069977A (ja) * | 1992-06-24 | 1994-01-18 | Kao Corp | 冷凍機作動流体用組成物 |
JPH0967589A (ja) * | 1995-09-04 | 1997-03-11 | Kao Corp | 冷凍機作動流体用組成物 |
JPH1112585A (ja) * | 1997-06-26 | 1999-01-19 | Kao Corp | 冷凍機油及び冷凍機作動流体用組成物 |
JP2000008062A (ja) * | 1998-06-22 | 2000-01-11 | Mitsui Chemicals Inc | 冷凍機用冷媒組成物 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019194195A1 (ja) * | 2018-04-02 | 2019-10-10 | Jxtgエネルギー株式会社 | 冷凍機、冷凍機油及び冷凍機用作動流体組成物 |
JPWO2019194195A1 (ja) * | 2018-04-02 | 2021-04-22 | Eneos株式会社 | 冷凍機、冷凍機油及び冷凍機用作動流体組成物 |
US11384271B2 (en) | 2018-04-02 | 2022-07-12 | Eneos Corporation | Refrigerator, refrigerator oil, working fluid composition for refrigerator |
JP7282746B2 (ja) | 2018-04-02 | 2023-05-29 | Eneos株式会社 | 冷凍機、冷凍機油及び冷凍機用作動流体組成物 |
Also Published As
Publication number | Publication date |
---|---|
US20040167042A1 (en) | 2004-08-26 |
KR20030007971A (ko) | 2003-01-23 |
TWI289600B (en) | 2007-11-11 |
EP1300459A1 (en) | 2003-04-09 |
EP1300459A4 (en) | 2006-05-31 |
JPWO2001096505A1 (ja) | 2004-06-10 |
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