WO2011024663A1 - 冷凍機油および冷凍機用作動流体組成物 - Google Patents
冷凍機油および冷凍機用作動流体組成物 Download PDFInfo
- Publication number
- WO2011024663A1 WO2011024663A1 PCT/JP2010/063810 JP2010063810W WO2011024663A1 WO 2011024663 A1 WO2011024663 A1 WO 2011024663A1 JP 2010063810 W JP2010063810 W JP 2010063810W WO 2011024663 A1 WO2011024663 A1 WO 2011024663A1
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- WO
- WIPO (PCT)
- Prior art keywords
- refrigerating machine
- amine salt
- group
- acidic phosphate
- fluorinated hydrocarbon
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 111
- 239000012530 fluid Substances 0.000 title claims abstract description 66
- 239000010726 refrigerant oil Substances 0.000 title abstract description 4
- -1 ether compound Chemical class 0.000 claims abstract description 215
- 239000003507 refrigerant Substances 0.000 claims abstract description 153
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 114
- 239000010452 phosphate Substances 0.000 claims abstract description 114
- 239000002199 base oil Substances 0.000 claims abstract description 88
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- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 59
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- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 claims description 21
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- WXGNWUVNYMJENI-UHFFFAOYSA-N 1,1,2,2-tetrafluoroethane Chemical compound FC(F)C(F)F WXGNWUVNYMJENI-UHFFFAOYSA-N 0.000 claims description 7
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- HKUFIYBZNQSHQS-UHFFFAOYSA-N n-octadecyloctadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCCCNCCCCCCCCCCCCCCCCCC HKUFIYBZNQSHQS-UHFFFAOYSA-N 0.000 description 1
- JACMPVXHEARCBO-UHFFFAOYSA-N n-pentylpentan-1-amine Chemical compound CCCCCNCCCCC JACMPVXHEARCBO-UHFFFAOYSA-N 0.000 description 1
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- FJDUDHYHRVPMJZ-UHFFFAOYSA-N nonan-1-amine Chemical compound CCCCCCCCCN FJDUDHYHRVPMJZ-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
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- CBFCDTFDPHXCNY-UHFFFAOYSA-N octyldodecane Natural products CCCCCCCCCCCCCCCCCCCC CBFCDTFDPHXCNY-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
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- OSDBJMYIUDLIRI-UHFFFAOYSA-N oxo-[[1-[[4-[[4-(oxoazaniumylmethylidene)pyridin-1-yl]methoxy]cyclohexyl]oxymethyl]pyridin-4-ylidene]methyl]azanium;dichloride Chemical compound [Cl-].[Cl-].C1=CC(=C[NH+]=O)C=CN1COC1CCC(OCN2C=CC(=C[NH+]=O)C=C2)CC1 OSDBJMYIUDLIRI-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical compound FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 229940100684 pentylamine Drugs 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
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- 229920000098 polyolefin Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- RQFVHGAXCJVPBZ-UHFFFAOYSA-N propylene pentamer Chemical compound CC=C.CC=C.CC=C.CC=C.CC=C RQFVHGAXCJVPBZ-UHFFFAOYSA-N 0.000 description 1
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- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- SWZDQOUHBYYPJD-UHFFFAOYSA-N tridodecylamine Chemical compound CCCCCCCCCCCCN(CCCCCCCCCCCC)CCCCCCCCCCCC SWZDQOUHBYYPJD-UHFFFAOYSA-N 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 0.000 description 1
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
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- 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
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- C10M169/04—Mixtures of base-materials and additives
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- 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
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
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- C10M105/04—Well-defined hydrocarbons aliphatic
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- C10M105/10—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
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- C10M105/14—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms polyhydroxy
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- C10M105/16—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen having hydroxy groups bound to a carbon atom of a six-membered aromatic ring
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- C10M105/18—Ethers, e.g. epoxides
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- 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
- C10M107/22—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M107/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol, aldehyde, ketonic, ether, ketal or acetal radical
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- 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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- C09K2205/106—Carbon dioxide
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Definitions
- the present invention relates to a refrigerating machine oil and a working fluid composition for a refrigerating machine.
- CFC chlorofluorocarbon
- HCFC hydrochlorofluorocarbon
- HFC-134a which is standardly used as a car air conditioner refrigerant, has zero ozone depletion potential (ODP), but has a high global warming potential (GWP), and is therefore subject to regulation in Europe. ing. Therefore, there is an urgent need to develop a refrigerant that replaces HFC-134a.
- Refrigerating machine oils that can be used with refrigerants such as mineral oil, alkylbenzenes, polyalphaolefins, polyalkylene glycols, monoesters, diesters, polyol esters, phthalates, alkyl ethers, ketones Refrigerating machine oils using carbonate esters, polyvinyl ethers, and the like have been proposed (see Patent Documents 5 to 7).
- ether-based refrigeration oils such as polyalkylene glycol and polyvinyl ether
- the refrigerant or the refrigeration oil may be decomposed to cause a system malfunction.
- the stability in the presence of an unsaturated fluorinated hydrocarbon refrigerant is further deteriorated when a conventionally used antiwear agent is added to improve wear resistance.
- the present invention has been made in view of such circumstances, and in a refrigeration system using an unsaturated fluorinated hydrocarbon refrigerant, the stability and wear resistance in the presence of the unsaturated fluorinated hydrocarbon refrigerant are high. It is an object of the present invention to provide a refrigerating machine oil and a working fluid composition for a refrigerating machine that are compatible with each other.
- the present invention comprises a base oil containing an ether compound, an amine salt of an acidic phosphate, an amine antioxidant, a metal deactivator, and an alicyclic epoxy compound.
- a working fluid composition for a refrigerator containing at least one selected from the group and an unsaturated fluorinated hydrocarbon refrigerant.
- the present invention provides at least one selected from the group consisting of a base oil containing an ether compound, an amine salt of an acidic phosphate, an amine antioxidant, a metal deactivator, and an alicyclic epoxy compound. And a refrigerating machine oil for use with an unsaturated fluorinated hydrocarbon refrigerant.
- Preferred embodiments of the working fluid composition for a refrigerator of the present invention include the working fluid compositions for a refrigerator shown in the following (1) to (7).
- a working fluid composition for a refrigerator comprising a base oil containing an ether compound, an amine salt of an acidic phosphate ester, an amine antioxidant, and an unsaturated fluorinated hydrocarbon refrigerant.
- a working fluid composition for a refrigerator comprising a base oil containing an ether compound, an amine salt of an acidic phosphate, a metal deactivator, and an unsaturated fluorinated hydrocarbon refrigerant.
- a base oil containing an ether compound, a refrigerating machine oil containing an amine salt of an acidic phosphate ester and an alicyclic epoxy compound, and an unsaturated fluorinated hydrocarbon refrigerant A working fluid composition for a refrigerator, wherein the amine salt content is greater than 0 and less than 400 mass ppm, based on the total amount of the refrigerator oil.
- a base oil containing an ether compound, a refrigerating machine oil containing an amine salt of an acidic phosphate and an alicyclic epoxy compound, and an unsaturated fluorinated hydrocarbon refrigerant A working fluid composition for a refrigerator, wherein the amine salt content is 400 mass ppm or more based on the total amount of the refrigerator oil.
- Refrigerating machine oil containing a base oil containing an ether compound, an amine salt of an acidic phosphate ester, an amine antioxidant, a metal deactivator and an alicyclic epoxy compound, and an unsaturated fluorinated hydrocarbon
- a working fluid composition for a refrigerating machine wherein the content of the amine salt of an acidic phosphate ester is greater than 0 and less than 400 ppm by mass, based on the total amount of refrigerating machine oil.
- Refrigerating machine oil containing base oil containing ether compound, amine salt of acidic phosphate ester, amine antioxidant, metal deactivator and alicyclic epoxy compound, and unsaturated fluorinated hydrocarbon A working fluid composition for a refrigerating machine, wherein the content of the amine salt of acidic phosphate is 400 mass ppm or more based on the total amount of refrigerating machine oil.
- preferred embodiments of the refrigerating machine oil of the present invention include refrigerating machine oils shown in the following (8) to (14).
- a base oil containing an ether compound, an acidic phosphate ester amine salt and an alicyclic epoxy compound, and the acidic phosphate ester amine salt content is 400 masses based on the total amount of refrigerating machine oil. Refrigerating machine oil that is at least ppm and used with unsaturated fluorinated hydrocarbon refrigerants.
- a base oil containing an ether compound, an amine salt of an acidic phosphate ester, an amine antioxidant, a metal deactivator and an alicyclic epoxy compound, and containing an amine salt of an acidic phosphate ester A refrigerating machine oil having an amount exceeding 0 and less than 400 ppm by mass, based on the total amount of refrigerating machine oil, and used with an unsaturated fluorinated hydrocarbon refrigerant.
- a base oil containing an ether compound, an amine salt of an acidic phosphate ester, an amine antioxidant, a metal deactivator and an alicyclic epoxy compound, and containing an amine salt of an acidic phosphate ester A refrigerating machine oil having an amount of 400 ppm by mass or more based on the total amount of refrigerating machine oil and used together with an unsaturated fluorinated hydrocarbon refrigerant.
- the fluid working fluid composition for a refrigerator of the present invention includes 1,2,3,3,3-pentafluoropropene, 1,3,3,3-tetrafluoropropene, 2, It preferably contains at least one selected from 3,3,3-tetrafluoropropene, 1,2,3,3-tetrafluoropropene and 3,3,3-trifluoropropene.
- the working fluid composition for a refrigerator of the present invention may use at least one unsaturated fluorohydrocarbon refrigerant (hereinafter referred to as “refrigerant (A)”) alone, saturated hydrofluorocarbon, carbon. It further contains at least one selected from hydrocarbons of several 3 to 5, dimethyl ether, carbon dioxide, bis (trifluoromethyl) sulfide and trifluoroiodomethane refrigerant (hereinafter referred to as “refrigerant (B)”). It may be.
- refrigerant (A) unsaturated fluorohydrocarbon refrigerant
- B trifluoroiodomethane refrigerant
- the unsaturated fluorinated hydrocarbon refrigerant 1,2,3,3,3-pentafluoropropene (HFO-1225ye), 1,3,3 3,3-tetrafluoropropene (HFO-1234ze), 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,2,3,3-tetrafluoropropene (HFO-1234ye) and 3,3 , 3-trifluoropropene (HFO-1243zf) is preferred;
- saturated hydrofluorocarbons include difluoromethane (HFC-32), pentafluoroethane (HFC-125), 1,1,2,2-tetrafluoroethane (HFC-134), 1,1,1,2-tetrafluoro.
- Ethane HFC-134a
- 1,1-difluoroethane HFC-152a
- fluoroethane HFC-161
- HFC-161 1,1,1,2,3,3,3-heptafluoropropane
- HFC-227ea 1 1,1,1,2,3,3-hexafluoropropane
- HFC-236ea 1,1,1,3,3,3-hexafluoropropane
- HFC-236fa 1,1,1,3,3 -Selected from pentafluoropropane
- HFC-365mfc 1,1,1,3,3-pentafluorobutane
- the hydrocarbon having 3 to 5 carbon atoms is preferably at least one selected from propane, normal butane, isobutane, 2-methylbutane and normal pentane.
- the refrigerating machine oil according to the first embodiment of the present invention includes a base oil containing an ether compound, an amine salt of an acidic phosphate, and an amine antioxidant, and an unsaturated fluorinated hydrocarbon refrigerant. It is used with.
- the working fluid composition for a refrigerator according to the first embodiment includes a base oil containing an ether compound, an amine salt of an acidic phosphate, an amine antioxidant, and an unsaturated fluorinated hydrocarbon refrigerant. And containing.
- the working fluid composition for a refrigerator according to the first embodiment includes an embodiment containing the refrigerator oil according to the first embodiment and an unsaturated fluorinated hydrocarbon refrigerant.
- the refrigerating machine oil according to the second embodiment of the present invention includes a base oil containing an ether compound, an amine salt of an acidic phosphate, and a metal deactivator, and an unsaturated fluorinated carbonization. Used with hydrogen refrigerant.
- the working fluid composition for a refrigerator according to the second embodiment includes a base oil containing an ether compound, an amine salt of an acidic phosphate, a metal deactivator, and an unsaturated fluorinated hydrocarbon refrigerant. And containing.
- the working fluid composition for a refrigerator according to the second embodiment includes an embodiment containing the refrigerator oil according to the second embodiment and an unsaturated fluorinated hydrocarbon refrigerant.
- the refrigerating machine oil according to the third embodiment of the present invention includes a base oil containing an ether compound, an amine salt of an acidic phosphate ester, and an alicyclic epoxy compound, and an amine salt content of an acidic forest ester
- a working fluid composition for a refrigerator according to a third embodiment includes a base oil containing an ether compound, a refrigerator oil containing an amine salt of an acidic phosphate ester and an alicyclic epoxy compound, and an unsaturated fluoride.
- a hydrocarbon refrigerant, and the content of the amine salt of the acidic phosphate is greater than 0 and less than 400 ppm by mass, based on the total amount of refrigerating machine oil.
- the working fluid composition for a refrigerator according to the third embodiment includes an embodiment containing the refrigerator oil according to the third embodiment and an unsaturated fluorinated hydrocarbon refrigerant.
- the refrigerating machine oil according to the fourth embodiment of the present invention contains a base oil containing an ether compound, an amine salt of an acidic phosphate ester, and an alicyclic epoxy compound, and contains an amine salt of an acidic phosphate ester.
- the amount is 400 mass ppm or more based on the total amount of the refrigerating machine oil, and is used together with the unsaturated hydrocarbon refrigerant.
- a working fluid composition for a refrigerator according to a fourth embodiment includes a base oil containing an ether compound, a refrigerator oil containing an amine salt of an acidic phosphate ester and an alicyclic epoxy compound, and an unsaturated fluoride.
- the working fluid composition for a refrigerator according to the fourth embodiment includes an embodiment containing the refrigerator oil according to the fourth embodiment and an unsaturated fluorinated hydrocarbon refrigerant.
- the refrigerating machine oil according to the fifth embodiment of the present invention includes a base oil containing an ether compound, an amine salt of an acidic phosphate ester, an amine antioxidant, a metal deactivator, and an alicyclic epoxy compound.
- the content of the amine salt of acidic phosphate ester is more than 0 and less than 400 ppm by mass based on the total amount of refrigerating machine oil, and is used together with the unsaturated fluorinated hydrocarbon refrigerant.
- the working fluid composition for a refrigerator according to the fifth embodiment includes a base oil containing an ether compound, an amine salt of an acidic phosphate ester, an amine antioxidant, a metal deactivator, and an alicyclic epoxy.
- the working fluid composition for a refrigerator according to the fifth embodiment includes an embodiment containing the refrigerator oil according to the fifth embodiment and an unsaturated fluorinated hydrocarbon refrigerant.
- the refrigerating machine oil according to the sixth embodiment of the present invention includes a base oil containing an ether compound, an amine salt of an acidic phosphate ester, an amine antioxidant, a metal deactivator, and an alicyclic epoxy compound.
- the content of the amine salt of acidic phosphate is 400 mass ppm or more based on the total amount of refrigerating machine oil, and is used together with the unsaturated fluorinated hydrocarbon.
- the working fluid composition for a refrigerator according to the sixth embodiment includes a base oil containing an ether compound, an amine salt of an acidic phosphate ester, an amine antioxidant, a metal deactivator, and an alicyclic epoxy.
- the refrigerating machine oil containing the compound and the unsaturated fluorinated hydrocarbon refrigerant are contained, and the content of the amine salt of the acidic phosphate ester is 400 ppm by mass or more based on the total amount of the refrigerating machine oil.
- the working fluid composition for a refrigerator according to the sixth embodiment includes an embodiment containing the refrigerator oil according to the sixth embodiment and an unsaturated fluorinated hydrocarbon refrigerant.
- the refrigerating machine oil according to the seventh embodiment of the present invention contains a base oil containing an ether compound and an alicyclic epoxy compound, has a water content of 300 to 10000 mass ppm, and is unsaturated fluorinated carbonized. Used with hydrogen refrigerant.
- a working fluid composition for a refrigerator according to a seventh embodiment includes a base oil containing an ether compound and an alicyclic epoxy compound, and has a moisture content of 300 to 10000 mass ppm, And an unsaturated fluorinated hydrocarbon refrigerant.
- the working fluid composition for a refrigerator according to the seventh embodiment includes an embodiment containing the refrigerator oil according to the seventh embodiment and an unsaturated fluorinated hydrocarbon refrigerant.
- the ether compound constituting the base oil is not particularly limited as long as it is a compound having one or more ether bonds in the molecule.
- polyalkylene glycol, polyvinyl ether, polyphenyl ether, perfluoroether and the like are listed, and among them, polyalkylene glycol and polyvinyl ether are preferably used.
- Examples of the polyalkylene glycol include a compound represented by the following general formula (1).
- R 1 -[(OR 2 ) f -OR 3 ] g (1)
- R 1 represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an acyl group having 2 to 10 carbon atoms, or a residue of a compound having 2 to 8 hydroxyl groups
- R 2 represents the number of carbon atoms.
- R 2 represents an alkylene group having 2 to 4
- R 3 represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an acyl group having 2 to 10 carbon atoms
- f represents an integer of 1 to 80
- g represents 1 to 8 Represents an integer.
- the alkyl group represented by R 1 and R 3 may be linear, branched or cyclic.
- the alkyl group preferably has 1 to 10 carbon atoms, more preferably 1 to 6 carbon atoms. When the number of carbon atoms in the alkyl group exceeds 10, the compatibility with the working medium tends to decrease.
- the alkyl group part of the acyl group represented by R 1 and R 3 may be linear, branched, or cyclic.
- the carbon number of the acyl group is preferably 2 to 10, more preferably 2 to 6. If the number of carbon atoms in the acyl group exceeds 10, the compatibility with the working medium may be reduced and phase separation may occur.
- the groups represented by R 1 and R 3 are both alkyl groups or are both acyl groups, the groups represented by R 1 and R 3 may be the same or different. Furthermore, when g is 2 or more, the groups represented by a plurality of R 1 and R 3 in the same molecule may be the same or different.
- R 1 When the group represented by R 1 is a residue of a compound having 2 to 8 hydroxyl groups, this compound may be a chain or a cyclic one.
- R 1 and R 3 are preferably an alkyl group (more preferably an alkyl group having 1 to 4 carbon atoms), particularly methyl.
- the group is preferable from the viewpoint of compatibility with the working medium.
- both R 1 and R 3 are alkyl groups (more preferably, alkyl groups having 1 to 4 carbon atoms), and particularly that both are methyl groups. Is preferred.
- R 1 or R 3 is an alkyl group (more preferably an alkyl group having 1 to 4 carbon atoms) and the other is a hydrogen atom, It is preferable that one is a methyl group and the other is a hydrogen atom.
- R 2 in the general formula (1) represents an alkylene group having 2 to 4 carbon atoms, and specific examples of such an alkylene group include an ethylene group, a propylene group, and a butylene group.
- Examples of the oxyalkylene group of the repeating unit represented by OR 2 include an oxyethylene group, an oxypropylene group, and an oxybutylene group.
- the oxyalkylene groups in the same molecule may be the same, or two or more oxyalkylene groups may be included.
- the polyalkylene glycols represented by the general formula (1) from the viewpoint of viscosity-temperature characteristics, a copolymer containing an oxyethylene group (EO) and an oxypropylene group (PO) is preferable.
- the ratio of the oxyethylene group to the total of the oxyethylene group and the oxypropylene group (EO / (PO + EO)) is in the range of 0.1 to 0.8 from the standpoint of seizure load and viscosity-temperature characteristics. Is more preferable, and is more preferably within a range of 0.3 to 0.6.
- the value of EO / (PO + EO) is preferably in the range of 0 to 0.5, more preferably in the range of 0 to 0.2, in terms of compatibility with the working medium, hygroscopicity, and heat / oxidation stability. More preferably, it is most preferably 0 (that is, a propylene oxide homopolymer).
- f represents the number of repetitions (polymerization degree) of the oxyalkylene group OR 2 and is an integer of 1 to 80.
- G is an integer of 1 to 8.
- R 1 is an alkyl group or an acyl group
- g is 1.
- R 1 is a residue of a compound having 2 to 8 hydroxyl groups
- g is the number of hydroxyl groups that the compound has.
- the product of f and g (f ⁇ g) is not particularly limited, but in order to satisfy the above-mentioned required performance as a lubricating oil for refrigerators in a well-balanced manner, the average value of f ⁇ g is 6 to 80. It is preferable to do so.
- the number average molecular weight of the polyalkylene glycol represented by the general formula (1) is preferably 500 to 3000, more preferably 600 to 2000, more preferably 600 to 1500, and n is the number average molecular weight of the polyalkylene glycol. It is preferable that the number satisfies the above conditions. When the number average molecular weight of the polyalkylene glycol is too low, the lubricity in the presence of the unsaturated fluorinated hydrocarbon refrigerant becomes insufficient.
- the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is 1.00 to 1.20 or less. Is preferred. When Mw / Mn exceeds 1.20, the compatibility between the unsaturated fluorinated hydrocarbon refrigerant and the refrigerating machine oil tends to be insufficient.
- polypropylene glycol dimethyl ether represented by the following general formula (2) and polyethylene polypropylene glycol dimethyl ether represented by the following general formula (3) are preferable in terms of economy and the above-mentioned effects
- polypropylene glycol monobutyl ether represented by the following general formula (4), further polypropylene glycol monomethyl ether represented by the following general formula (5), polyethylene polypropylene glycol monomethyl ether represented by the following general formula (6), Polyethylene polypropylene glycol monobutyl ether represented by the following general formula (7) and polypropylene glycol diacetate represented by the following general formula (8) are preferable in terms of economy and the like.
- a polyalkylene glycol derivative having at least one structural unit represented by the general formula (9) can be used as the polyalkylene glycol.
- R 4 to R 7 may be the same or different, and each represents a hydrogen atom, a monovalent hydrocarbon group having 1 to 10 carbon atoms, or the following general formula (13):
- R 8 and R 9 may be the same or different and each represents a hydrogen atom, a monovalent hydrocarbon group having 1 to 10 carbon atoms or an alkoxyalkyl group having 2 to 20 carbon atoms
- R 10 represents an alkylene group having 2 to 5 carbon atoms, a substituted alkylene group having 2 to 5 carbon atoms having an alkyl group as a substituent, or a substituted alkylene group having 4 to 10 carbon atoms having an alkoxyalkyl group as a substituent.
- R represents an integer of 0 to 20
- R 13 represents a monovalent hydrocarbon group having 1 to 10 carbon
- R 4 to R 7 each represent a hydrogen atom, a monovalent hydrocarbon group having 1 to 10 carbon atoms or a group represented by the general formula (10).
- the monovalent hydrocarbon group having 10 include a linear or branched alkyl group having 1 to 10 carbon atoms, a linear or branched alkenyl group having 2 to 10 carbon atoms, Examples thereof include a cycloalkyl group having 5 to 10 carbon atoms or an alkylcycloalkyl group, an aryl group having 6 to 10 carbon atoms or an alkylaryl group, and an arylalkyl group having 7 to 10 carbon atoms.
- a monovalent hydrocarbon group having 6 or less carbon atoms particularly an alkyl group having 3 or less carbon atoms, specifically a methyl group, an ethyl group, an n-propyl group, or an isopropyl group. preferable.
- R 8 and R 9 each represent a hydrogen atom, a monovalent hydrocarbon group having 1 to 10 carbon atoms, or an alkoxyalkyl group having 2 to 20 carbon atoms.
- R 10 is an alkylene group having 2 to 5 carbon atoms, a substituted alkylene group having 2 to 5 carbon atoms having an alkyl group as a substituent, or a total carbon number 4 having an alkoxyalkyl group as a substituent.
- R 11 represents a monovalent hydrocarbon group having 1 to 10 carbon atoms.
- the hydrocarbon group include straight chain or 1 to 10 carbon atoms or Branched alkyl group, linear or branched alkenyl group having 2 to 10 carbon atoms, cycloalkyl group or alkylcycloalkyl group having 5 to 10 carbon atoms, aryl group or alkylaryl having 6 to 10 carbon atoms And arylalkyl groups having 7 to 10 carbon atoms.
- a monovalent hydrocarbon group having 6 or less carbon atoms is preferable, and an alkyl group having 3 or less carbon atoms is particularly preferable.
- R 4 to R 7 is a group represented by the general formula (10).
- any one of R 4 and R 6 is a group represented by the above general formula (10), and the remaining one of R 4 or R 6 and R 5 and R 7 are each a hydrogen atom or carbon.
- a monovalent hydrocarbon group having a number of 1 to 10 is preferable.
- the polyalkylene glycol having the structural unit represented by the general formula (9), preferably used in the present invention, is a homopolymer consisting only of the structural unit represented by the general formula (9); A copolymer composed of two or more structural units represented by different structures and a structural unit represented by the general formula (9) and other structural units (for example, a structural unit represented by the following general formula (11)) It can be roughly divided into three types of copolymers consisting of: Preferred examples of the homopolymer include 1 to 200 structural units A represented by the general formula (9), and each terminal group is a hydroxyl group, an acyloxy group having 1 to 10 carbon atoms, or a 1 to 10 carbon atom group.
- R 12 to R 15 may be the same or different and each represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
- preferred examples of the copolymer include 1 to 200 of the two types of structural units A and B represented by the general formula (9), or the structural unit A represented by the general formula (9). 1 to 200 and 1 to 200 structural units C represented by the general formula (10), and each terminal group is a hydroxyl group, an acyloxy group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or aryloxy The thing which consists of groups can be mentioned.
- copolymers include alternating copolymerization of the structural unit A and the structural unit B (or the structural unit C), a random copolymer, a block copolymer, or a graft in which the structural unit B is graft-bonded to the main chain of the structural unit A. Any polymerization form of the copolymer may be used.
- the hydroxyl value of the polyalkylene glycol is not particularly limited, but is desirably 100 mgKOH / g or less, preferably 50 mgKOH / g or less, more preferably 30 mgKOH / g or less, and most preferably 10 mgKOH / g or less.
- the polyalkylene glycol represented by the general formula (1) can be synthesized by a conventionally known method (“alkylene oxide polymer”, Mitsuta Shibata et al., Kaibundo, November 20, 1990). Issue).
- an alcohol R 1 OH; R 1 represents the same definition as R 1 in the general formula (1)
- R 1 represents the same definition as R 1 in the general formula (1)
- esterification the polyalkylene glycol represented by the general formula (1) is obtained.
- the resulting polyalkylene glycol may be either a random copolymer or a block copolymer, but tends to be more excellent in oxidative stability. Therefore, it is preferably a block copolymer, and is preferably a random copolymer because it tends to have better low-temperature fluidity.
- the kinematic viscosity at 100 ° C. of the polyalkylene glycol represented by the general formula (1) is preferably 5 to 20 mm 2 / s, preferably 6 to 18 mm 2 / s, more preferably 7 to 16 mm 2 / s. More preferably, it is 8 to 15 mm 2 / s, and most preferably 9 to 13 mm 2 / s.
- the lubricity in the presence of the refrigerant becomes insufficient.
- the kinematic viscosity of the polyalkylene glycol at 40 ° C. is preferably 10 to 200 mm 2 / s, and more preferably 20 to 150 mm 2 / s. If the kinematic viscosity at 40 ° C. is less than 10 mm 2 / s, the lubricity and the sealing performance of the compressor tend to be reduced. If the kinematic viscosity exceeds 200 mm 2 / s, it is compatible with the refrigerant under low temperature conditions.
- the composition range showing the above becomes narrow, and the lubrication failure of the refrigerant compressor and the heat exchange in the evaporator tend to be hindered.
- the pour point of the polyalkylene glycol represented by the general formula (1) is preferably ⁇ 10 ° C. or less, and more preferably ⁇ 20 to ⁇ 50 ° C.
- the refrigerating machine oil tends to solidify in the refrigerant circulation system at low temperatures.
- an alkylene oxide such as propylene oxide may cause a side reaction to form an unsaturated group such as an allyl group in the molecule.
- an unsaturated group is formed in the polyalkylene glycol molecule, the thermal stability of the polyalkylene glycol itself is reduced, a polymer is produced and sludge is produced, or the antioxidant property (antioxidant property) is lowered. Therefore, a phenomenon such as generation of peroxide is likely to occur.
- a peroxide when a peroxide is generated, it decomposes to generate a compound having a carbonyl group, and the compound having a carbonyl group generates sludge, which easily causes capillary clogging.
- the polyalkylene glycol used in the first to seventh embodiments those having a low degree of unsaturation derived from an unsaturated group or the like are preferable, specifically, 0.04 meq / g or less is preferable, It is more preferably 0.03 meq / g or less, and most preferably 0.02 meq / g or less.
- the peroxide value is preferably 10.0 meq / kg or less, more preferably 5.0 meq / kg or less, and most preferably 1.0 meq / kg.
- the carbonyl value is preferably 100 ppm by weight or less, more preferably 50 ppm by weight or less, and most preferably 20 ppm by weight or less.
- the degree of unsaturation, the peroxide value, and the carbonyl value are values measured by a standard oil analysis test method established by the Japan Oil Chemists' Society. That is, the degree of unsaturation according to the present invention refers to reacting a sample with a Wis solution (ICl-acetic acid solution) and leaving it in the dark, and then reducing excess ICl to iodine and converting the iodine content with sodium thiosulfate.
- ICl-acetic acid solution ICl-acetic acid solution
- the iodine value is calculated by titration, and the iodine value is converted into a vinyl equivalent (meq / g);
- the peroxide value according to the present invention refers to the free iodine produced by adding potassium iodide to a sample. Is a value obtained by converting this free iodine into the number of milliequivalents per 1 kg of the sample (meq / kg); the carbonyl value according to the present invention means that 2,4-dinitrophenylhydrazine is added to the sample.
- the quinoid ion is colored, and the absorbance at 480 nm of this sample is measured. Based on the calibration curve obtained in advance using cinnamaldehyde as a standard substance, Say-converted value Le amount (wt ppm).
- the reaction temperature when propylene oxide is reacted is preferably 120 ° C. or lower (more preferably 110 ° C. or lower).
- an alkali catalyst such as activated carbon, activated clay, bentonite, dolomite, aluminosilicate, etc., to remove it may reduce the degree of unsaturation. Can do.
- contact with oxygen is avoided as much as possible, and an increase in the peroxide value or carbonyl value can also be prevented by adding an antioxidant.
- base oils and additives other than the polyalkylene glycol represented by the general formula (1) may be added.
- the content of the polyalkylene glycol in the refrigerating machine oil is not particularly limited as long as the above excellent characteristics are not impaired, but is preferably 50% by mass or more based on the total amount of the refrigerating machine oil, and 70% by mass or more. More preferably, it is more preferably 80% by mass or more, and particularly preferably 90% by mass or more. If the content of the polyalkylene glycol represented by the general formula (1) is less than 50% by mass, any one of various performances such as refrigerating machine oil lubricity, refrigerant compatibility, thermal / chemical stability, etc. It tends to be insufficient.
- the content of the polyalkylene glycol represented by the general formula (1) is not particularly limited, but lubricity, refrigerant compatibility, thermal / chemical stability, electric From the point of being superior by various performances such as insulation, it is preferable to contain 50% by mass or more, more preferably 70% by mass or more, and even more preferably 80% by mass or more, based on the total amount of refrigerating machine oil.
- the content is most preferably 90% by mass or more.
- Examples of the polyvinyl ether used in the first to seventh embodiments include polyvinyl ether compounds having a structural unit represented by the following general formula (12).
- R 16 to R 18 may be the same or different and each represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms;
- R 19 is a divalent carbon atom having 1 to 10 carbon atoms;
- R 20 represents a hydrocarbon group having 1 to 20 carbon atoms, and s represents a number having an average value of 0 to 10
- R 16 to R 20 may be the same or different for each structural unit, and when the structural unit represented by the general formula (12) has a plurality of R 19 O, a plurality of R 19 O May be the same or different.
- the polyvinyl ether compound which consists of a block copolymer or a random copolymer which has a structural unit represented by the said General formula (12) and a structural unit represented by the following General formula (13) is also used.
- R 21 to R 24 may be the same or different and each represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and R 21 to R 24 are the same or different for each structural unit. It may be.
- R 16 to R 18 in the general formula (12) each represent a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms (preferably a hydrocarbon group having 1 to 4 carbon atoms), and they may be the same or different from each other.
- the hydrocarbon group include an alkyl group, a cycloalkyl group, an aryl group, an arylalkyl group, and the like, and R 15 to R 18 are preferably hydrogen atoms.
- R 19 in the general formula (12) represents a divalent hydrocarbon group having 1 to 10 carbon atoms (preferably 2 to 10) or a divalent ether-bonded oxygen-containing hydrocarbon group having 2 to 20 carbon atoms.
- the divalent hydrocarbon group having 1 to 10 carbon atoms include a divalent aliphatic chain hydrocarbon group, an alicyclic hydrocarbon group having two bonding sites on the alicyclic hydrocarbon, and a divalent aromatic group.
- divalent ether-bonded oxygen-containing hydrocarbon group having 2 to 20 carbon atoms include methoxymethylene group, methoxyethylene group, methoxymethylethylene group, 1,1-bismethoxymethylethylene group, 1,2 Preferred examples include -bismethoxymethylethylene group, ethoxymethylethylene group, (2-methoxyethoxy) methylethylene group, (1-methyl-2-methoxy) methylethylene group and the like.
- s represents the number of R 19 O repeats, and the average value is a number in the range of 0 to 10, preferably 0 to 5. When the R 19 O is more, the same configuration units, a plurality of R 19 O may be the same or different.
- R 20 represents a hydrocarbon group having 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms.
- hydrocarbon groups include alkyl groups, cycloalkyl groups, aryl groups, arylalkyls. Group, and the like.
- R 22 to R 26 may be the same or different for each structural unit.
- the carbon / oxygen atom number ratio is preferably in the range of 4.2 to 7.0. If the atomic ratio is less than 4.2, the hygroscopicity becomes excessively high, and if it exceeds 7.0, the compatibility with the working medium tends to decrease.
- R 21 to R 24 may be the same or different and each represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.
- examples of the hydrocarbon group having 1 to 20 carbon atoms include the hydrocarbon groups exemplified in the description of R 20 in the general formula (12).
- R 21 to R 24 may be the same or different for each structural unit.
- the polyvinyl ether according to the present invention is a block copolymer or a random copolymer having a structural unit represented by the general formula (12) and a structural unit represented by the general formula (13), the carbon / oxygen
- the atomic ratio is preferably in the range of 4.2 to 7.0. If the atomic ratio is less than 4.2, the hygroscopicity becomes excessively high, and if it exceeds 7.0, the compatibility with the working medium tends to decrease.
- the homopolymer which consists only of the structural unit represented by the said General formula (12), the structural unit represented by the said General formula (12), and the structure represented by the said General formula (13) Mixtures of block copolymers or random copolymers comprising units can also be used.
- These homopolymers and copolymers can be produced by polymerization of corresponding vinyl ether monomers and copolymerization of corresponding hydrocarbon monomers having olefinic double bonds and corresponding vinyl ether monomers.
- one of the terminal structures is represented by the following general formula (14) or (15), and the other is represented by the following general formula (16) or (17). And those having one end represented by the general formula (14) or (15) and the other represented by the following general formula (18) are preferable.
- R 25 to R 27 may be the same or different and each represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms;
- R 28 represents a divalent carbon atom having 1 to 10 carbon atoms;
- R 29 represents a hydrocarbon group having 1 to 20 carbon atoms, and
- t represents a number having an average value of 0 to 10
- the terminal structure represented by the general formula (14) has a plurality of R 28 Os
- the plurality of R 28 Os may be the same or different.
- R 30 to R 33 may be the same or different and each represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.
- R 34 to R 36 may be the same or different and each represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms;
- R 37 represents a divalent carbon atom having 1 to 10 carbon atoms;
- R 38 represents a hydrocarbon group having 1 to 20 carbon atoms, and
- t represents a number having an average value of 0 to 10
- the terminal structure represented by the general formula (16) has a plurality of R 37 O
- the plurality of R 37 O may be the same or different.
- R 39 to R 42 may be the same or different and each represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.
- R 43 to R 45 may be the same or different and each represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms.
- One of the terminals has a structure represented by the general formula (14) or (15) and the other has the structure represented by the general formula (16) or (17), and R 16 in the general formula (12) R 18 is a hydrogen atom, s is a number from 0 to 4, R 19 is a divalent hydrocarbon group having 2 to 4 carbon atoms, and R 20 is a carbon atom having 1 to 20 carbon atoms. Being a hydrogen group; (Ii) It has only the structural unit represented by the general formula (12), and one of the terminals has a structure represented by the general formula (14) and the other is represented by the general formula (15).
- R 16 to R 18 in the general formula (12) are all hydrogen atoms, s is a number from 0 to 4, and R 19 is a divalent hydrocarbon group having 2 to 4 carbon atoms.
- R 20 is a hydrocarbon group having 1 to 20 carbon atoms;
- One of the terminals has a structure represented by the general formula (14) or (15) and the other is represented by the general formula (16), and R 16 to R 18 in the general formula (12) are All are hydrogen atoms, s is a number from 0 to 4, R 19 is a divalent hydrocarbon group having 2 to 4 carbon atoms, and R 20 is a hydrocarbon group having 1 to 20 carbon atoms.
- R 16 to R 18 in the general formula (12) are all hydrogen atoms, s is a number from 0 to 4, and R 19 is a divalent hydrocarbon group having 2 to 4 carbon atoms.
- R 20 is a hydrocarbon group having 1 to 20 carbon atoms.
- the structural unit represented by the general formula (15) is included, one of the terminals is represented by the general formula (17), and the other is represented by the following general formula (19).
- Polyvinyl ether compounds having a structure represented by) can also be used.
- R 46 to R 48 may be the same or different and each represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, and R 49 and R 51 may be the same or different.
- R 50 and R 52 may be the same or different, each represents a hydrocarbon group having 1 to 10 carbon atoms, and u and v may be the same They may be different, each having an average value of 0 to 10, and when the terminal structure represented by the general formula (19) has a plurality of R 49 O or R 51 O, a plurality of R 49 Os. Or R 51 O may be the same or different. ]
- the present invention comprises a structural unit represented by the following general formula (20) or (21), has a weight average molecular weight of 300 to 5,000, and one of the terminals is represented by the following general formula (22)
- a polyvinyl ether compound composed of a homopolymer or copolymer of an alkyl vinyl ether having a structure represented by (23) can also be used.
- R 53 represents a hydrocarbon group having 1 to 8 carbon atoms.
- R 54 represents a hydrocarbon group having 1 to 8 carbon atoms.
- R 55 represents an alkyl group having 1 to 3 carbon atoms
- R 56 represents a hydrocarbon group having 1 to 8 carbon atoms.
- R 57 represents a hydrocarbon group having 1 to 8 carbon atoms.
- the kinematic viscosity of polyvinyl ether at 100 ° C. is preferably 5 to 20 mm 2 / s, preferably 6 to 18 mm 2 / s, more preferably 7 to 16 mm 2 / s, still more preferably 8 to 15 mm 2 / s. Most preferably, it is 9 to 13 mm 2 / s.
- the kinematic viscosity at 100 ° C. is less than the lower limit, the lubricity in the presence of the refrigerant becomes insufficient.
- the upper limit is exceeded, the composition range showing compatibility with the refrigerant becomes narrow, and the refrigerant compression Machine lubrication and heat exchange in the evaporator are likely to be hindered.
- the kinematic viscosity at 40 ° C. of the polyvinyl ether is preferably 10 to 200 mm 2 / s, more preferably 20 to 150 mm 2 / s at 40 ° C. If the kinematic viscosity at 40 ° C. is less than 10 mm 2 / s, the lubricity and the sealing performance of the compressor tend to be reduced. If the kinematic viscosity exceeds 200 mm 2 / s, it is compatible with the refrigerant under low temperature conditions. The composition range showing the above becomes narrow, and the lubrication failure of the refrigerant compressor and the heat exchange in the evaporator tend to be hindered.
- the pour point of polyvinyl ether is preferably ⁇ 10 ° C. or lower, more preferably ⁇ 20 to ⁇ 50 ° C.
- the refrigerating machine oil tends to solidify in the refrigerant circulation system at low temperatures.
- the polyvinyl ether is preferably one having a low degree of unsaturation derived from an unsaturated group or the like, specifically preferably 0.04 meq / g or less, more preferably 0.03 meq / g or less. Preferably, it is 0.02 meq / g or less.
- the peroxide value is preferably 10.0 meq / kg or less, more preferably 5.0 meq / kg or less, and most preferably 1.0 meq / kg.
- the carbonyl value is preferably 100 ppm by weight or less, more preferably 50 ppm by weight or less, and most preferably 20 ppm by weight or less.
- the hydroxyl value of polyvinyl ether is not particularly limited, but is desirably 10 mgKOH / g, preferably 5 mgKOH / g, more preferably 3 mgKOH / g.
- the content of the polyvinyl ether in the refrigerating machine oil and the working fluid composition for the refrigerating machine according to the first to seventh embodiments is not particularly limited as long as the above excellent characteristics are not impaired, but is based on the total quantity of refrigerating machine oil. It is preferably 50% by mass or more, more preferably 70% by mass or more, further preferably 80% by mass or more, and particularly preferably 90% by mass or more. If the content of the polyvinyl ether represented by the general formula (1) is less than 50% by mass, any of various performances such as lubricity, refrigerant compatibility, thermal / chemical stability, etc. of the refrigerating machine oil is unsatisfactory. It tends to be sufficient.
- the base oil may be composed only of an ether compound, but further contains a base oil other than the ether compound. May be.
- Base oils other than ether compounds include mineral oils, olefin polymers, naphthalene compounds, hydrocarbon oils such as alkylbenzenes, and ester base oils (monoesters, diesters, polyol esters, etc.), ketones, silicones, polysiloxanes, etc.
- a synthetic oil containing oxygen may be used in combination.
- polyol esters are preferably used as the synthetic oil containing oxygen.
- the additives contained in the refrigerating machine oil and the working fluid composition for the refrigerating machine according to the first to seventh embodiments will be described.
- the additive content is shown based on the total amount of the refrigerating machine oil, but the content of these components in the refrigerating machine fluid composition is based on the total amount of the refrigerating machine oil composition. It is desirable to select so that it may become in the preferable range mentioned later.
- amine salts of acidic phosphate esters include amine salts of acidic phosphate esters and primary or tertiary linear or branched alkyl group amines having 1 to 24 carbon atoms, preferably 5 to 18 carbon atoms.
- Examples of the acidic phosphate ester constituting the amine salt of acidic phosphate ester include monobutyl acid phosphate, monopentyl acid phosphate, monohexyl acid phosphate, monoheptyl acid phosphate, monooctyl acid phosphate, monononyl acid phosphate, monodecyl acid Phosphate, monoundecyl acid phosphate, monododecyl acid phosphate, monotridecyl acid phosphate, monotetradecyl acid phosphate, monopentadecyl acid phosphate, monohexadecyl acid phosphate, monoheptadecyl acid phosphate, monooctadecyl acid phosphate, monooleyl Acid phosphate, dibutyl acid phosphate, dipen Ruacid phosphate, dihexyl acid phosphate, diheptyl acid phosphate, dioctyl acid phosphate,
- the amine constituting the acid phosphate ester salt includes linear or branched methylamine, ethylamine, propylamine, butylamine, pentylamine, hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecyl.
- the content of the amine salt of the acidic phosphate ester is not particularly limited, but is based on the total quantity of refrigerating machine oil (base oil and all blends). Based on the total amount of additives), it is preferably from 0.01 to 5.0% by mass, more preferably from 0.02 to 3.0% by mass.
- the content of the amine salt of the acidic phosphate ester is based on the total quantity of refrigerating machine oil (the total amount of base oil and all blended additives). (Reference) and more than 0 and less than 400 ppm by mass, preferably 100 to 350 ppm by mass, more preferably 200 to 300 ppm by mass.
- the content of the amine salt of the acidic phosphate ester is based on the total quantity of refrigerating machine oil (the total amount of base oil and all blended additives). Standard)), it is 400 ppm by mass or more, preferably 450 to 10,000 ppm by mass, more preferably 500 to 5000 ppm by mass.
- one kind of acidic phosphate ester amine salt may be used alone, or two or more kinds may be used in combination.
- the amine antioxidant used in the first, fifth and sixth embodiments will be described in detail.
- the amine-based antioxidant can be preferably added to the refrigerating machine oil and the working fluid composition for the refrigerating machine.
- amine antioxidant examples include phenyl- ⁇ -naphthylamines represented by the following formula (24), p, p′-dialkylated diphenylamine represented by the formula (25), and the like.
- R 58 represents a hydrogen atom or an alkyl group having 1 to 16 carbon atoms.
- R 59 and R 60 each independently represents an alkyl group having 1 to 16 carbon atoms.
- R 58 is an alkyl group, a more excellent sludge generation suppressing effect can be obtained. Therefore, R 58 is a branched alkyl group having 8 to 16 carbon atoms. Further, a branched alkyl group having 8 to 16 carbon atoms derived from an oligomer of an olefin having 3 or 4 carbon atoms is more preferable. Specific examples of the olefin having 3 or 4 carbon atoms include propylene, 1-butene, 2-butene and isobutylene, but propylene or isobutylene is preferable in order to obtain a more excellent sludge formation suppressing effect.
- R 58 is a branched octyl group derived from a dimer of isobutylene, a branched nonyl group derived from a trimer of propylene, and a trimer of isobutylene.
- a branched dodecyl group derived from a propylene tetramer, a branched dodecyl group derived from a propylene tetramer, or a branched pentadecyl group derived from a propylene pentamer is more preferred, and a branch derived from a dimer of isobutylene.
- a branched dodecyl group derived from a branched octyl group, a trimer of isobutylene, or a branched dodecyl group derived from a tetramer of propylene is more preferred, and a branched dodecyl group is most preferred.
- R 59 and R 60 of p, p′-dialkyldiphenylamine represented by the general formula (25) are each independently a branched alkyl group having 3 to 16 carbon atoms in order to obtain a more excellent sludge generation inhibiting effect. Further, a branched alkyl group having 3 to 16 carbon atoms derived from an olefin having 3 or 4 carbon atoms or an oligomer thereof is more preferable. Specific examples of the olefin having 3 or 4 carbon atoms include propylene, 1-butene, 2-butene, and isobutylene, but propylene or isobutylene is preferable in order to obtain a more excellent sludge formation suppressing effect.
- R 59 or R 60 is most preferably a tert-butyl group derived from isobutylene or a branched octyl group derived from a dimer of isobutylene in order to obtain a better antioxidant effect.
- the synthesized product is a halogenated alkyl compound having 1 to 16 carbon atoms and diphenylamine, or an olefin having 2 to 16 carbon atoms, or having 2 to 16 carbon atoms.
- any synthesis method may be used.
- the upper limit of the content of the amine-based antioxidant is preferably 2% by mass based on the total amount of the composition, more preferably 1.5% by mass, and even more preferably 1% by mass. If the content exceeds 2% by mass, sludge is generated, which is not preferable.
- the lower limit of the content of the amine antioxidant is preferably 0.001% by mass, more preferably 0.05% by mass, and still more preferably 0.1% by mass based on the total amount of the composition. When the content of the antioxidant is less than 0.001% by mass, the antioxidant effect is insufficient, which is not preferable.
- the metal deactivator used in the second, fifth and sixth embodiments will be described in detail.
- the metal deactivator can be preferably added to the refrigerating machine oil and the working fluid composition for the refrigerating machine.
- benzotriazole or a derivative thereof is preferably used.
- Benzotriazole is a compound represented by the following formula (26).
- benzotriazole derivative examples include alkylbenzotriazole represented by the following general formula (27), (alkyl) aminoalkylbenzotriazole represented by the following general formula (28), and the like.
- R 61 represents a linear or branched alkyl group having 1 to 4 carbon atoms, preferably a methyl group or an ethyl group, and a represents 1 to 3, preferably 1 or 2.
- R 61 include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, and a tert-butyl group.
- alkylbenzotriazole represented by the general formula (27) a compound in which R 61 is a methyl group or an ethyl group and a is 1 or 2 is particularly preferable from the viewpoint of excellent antioxidant properties.
- examples thereof include benzotriazole (tolyltriazole), dimethylbenzotriazole, ethylbenzotriazole, ethylmethylbenzotriazole, diethylbenzotriazole, and mixtures thereof.
- R 62 represents a linear or branched alkyl group having 1 to 4 carbon atoms, preferably a methyl group or an ethyl group
- R 63 represents a methylene group or an ethylene group
- R 64 and R 65 is the same or different group, and represents a hydrogen atom or a linear or branched alkyl group having 1 to 18 carbon atoms, preferably a linear or branched alkyl group having 1 to 12 carbon atoms
- b represents 0 to 3, preferably 0 or 1.
- R 62 examples include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, and a tert-butyl group.
- R 64 and R 65 include a hydrogen atom, methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-bull group, pentyl group, hexyl group, heptyl group, Examples thereof include alkyl groups such as octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, and octadecyl group.
- R 64 and R 65 may be the same or different.
- R 62 is a methyl group
- b is 0 or 1
- R 63 is a methylene group or an ethylene group
- R is particularly excellent in the antioxidant property.
- dialkylaminoalkylbenzotriazoles examples include dimethylaminomethylbenzotriazole, diethylaminomethylbenzotriazole, dipropylaminomethylbenzotriazole, dibutylaminomethylbenzotriazole, dipentylaminomethylbenzotriazole, dihexylaminomethylbenzotriazole, diheptyl.
- Aminomethylbenzotriazole dioctylaminomethylbenzotriazole, N, N-bis (2-ethylhexyl) -methylbenzotriazole, dinonylaminomethylbenzotriazole, didecylaminomethylbenzotriazole, diundecylaminomethylbenzotriazole, didodecylamino Methylbenzotriazole; dimethylaminoethylbenzotriazole, Ethylaminoethylbenzotriazole, dipropylaminoethylbenzotriazole, dibutylaminoethylbenzotriazole, dipentylaminoethylbenzotriazole, dihexylaminoethylbenzotriazole, diheptylaminoethylbenzotriazole, dioctylaminoethylbenzotriazole, dinonylaminoethylbenzotriazo
- the content of the metal deactivator in the refrigerating machine oil and the working fluid composition for the refrigerating machine is not particularly limited, but is usually preferably 0.001 to 1.0% by mass based on the total amount of the refrigerating machine oil, and 0.005 to 0. More preferable is 5% by mass. If the content of the metal deactivator is less than 0.001% by mass, the effect of the addition may not be sufficient. On the other hand, if the content exceeds 1.0% by mass, an effect of adding only the content can be obtained. This is not preferable because it is economically disadvantageous.
- the alicyclic epoxy compound used in the third, fourth, fifth, sixth and seventh embodiments will be described in detail.
- the alicyclic epoxy compound can be preferably added to the refrigerating machine oil and the working fluid composition for the refrigerating machine.
- Examples of the alicyclic epoxy compound include 1,2-epoxycyclohexane, 1,2-epoxycyclopentane, 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate, bis (3,4-epoxycyclohexyl).
- Methyl) adipate exo-2,3-epoxynorbornane, bis (3,4-epoxy-6-methylcyclohexylmethyl) adipate, 2- (7-oxabicyclo [4.1.0] hept-3-yl)- Spiro (1,3-dioxane-5,3 ′-[7] oxabicyclo [4.1.0] heptane, 4- (1′-methylepoxyethyl) -1,2-epoxy-2-methylcyclohexane, 4 -Epoxyethyl-1,2-epoxycyclohexane and the like.
- epoxidized fatty acid monoester examples include esters of epoxidized fatty acid having 12 to 20 carbon atoms with alcohol or phenol having 1 to 8 carbon atoms, alkylphenol, and the like. Particularly preferred are butyl, hexyl, benzyl, cyclohexyl, methoxyethyl, octyl, phenyl and butylphenyl esters of epoxy stearate. Said alicyclic epoxy compound may be used individually by 1 type, and may be used together 2 or more types.
- the content of the alicyclic epoxy compound in the refrigerating machine oil and the working fluid composition for the refrigerating machine is not particularly limited, but is usually preferably 0.01 to 6.0% by mass based on the total amount of the refrigerating machine oil, and 0.05 to 5.0% by mass is more preferable, 0.10 to 4.0% by mass is even more preferable, 0.15 to 3.0% by mass is even more preferable, and 0.20 to 2.0% by mass is most preferable. .
- the content of the alicyclic epoxy compound is less than 0.01% by mass, the effect of improving the heat and hydrolysis stability due to the addition of the alicyclic epoxy compound may not be sufficient. When exceeding, it is not preferable because insoluble matter may be precipitated.
- an epoxy compound other than the alicyclic epoxy compound can be used, but an alicyclic epoxy compound is used, or It is preferable to use an alicyclic epoxy compound in combination with an epoxy compound other than the alicyclic epoxy compound.
- an epoxy compound other than the alicyclic epoxy compound a phenyl glycidyl ether type epoxy compound, a glycidyl ester type epoxy compound, an epoxidized fatty acid monoester, and the like are preferable, and a glycidyl ester type epoxy compound is more preferable.
- the refrigerating machine oil and the working fluid composition for the refrigerating machine according to the first to seventh embodiments can contain conventionally known refrigerating machine oil additives as necessary in order to further enhance the performance.
- additives include phenolic antioxidants such as di-tert-butyl-p-cresol and bisphenol A, anti-wear agents such as zinc dithiophosphate and other phosphorus compounds, chlorinated paraffin, sulfur compounds, etc.
- Extreme pressure agents oily agents such as fatty acids, silicone-based antifoaming agents, viscosity index improvers, pour point depressants, detergent dispersants, and the like.
- These additives may be used individually by 1 type, and may be used in combination of 2 or more type.
- the content of these additives is not particularly limited, but is preferably 10% by mass or less, more preferably 5% by mass or less, based on the total amount of refrigerating machine oil.
- the kinematic viscosity of the refrigerating machine oil according to the first to seventh embodiments is not particularly limited, but the kinematic viscosity at 40 ° C. is preferably 3 to 1000 mm 2 / s, more preferably 4 to 500 mm 2 / s, and most preferably 5. ⁇ 400 mm 2 / s.
- the kinematic viscosity at 100 ° C. is preferably 1 to 100 mm 2 / s, more preferably 2 to 50 mm 2 / s.
- the water content of the refrigerating machine oil according to the seventh embodiment is 300 to 10000 mass ppm, preferably 350 to 8000 mass ppm, more preferably 400 to 6000 mass ppm, based on the total amount of the refrigerating machine oil.
- the stability of the refrigerating machine oil composition in an unsaturated fluorinated hydrocarbon refrigerant atmosphere can be enhanced.
- the alicyclic epoxy compound takes in water and stabilizes the trace decomposition product of the unsaturated fluorinated hydrocarbon refrigerant.
- the water content of the refrigerating machine oil according to the first to sixth embodiments is not particularly limited, but is preferably 500 ppm by mass or less, more preferably 300 ppm by mass or less, and most preferably 200 ppm by mass or less based on the total amount of the refrigerating machine oil. It can be.
- the refrigerating machine oil and the working fluid composition for a refrigerating machine according to the first to sixth embodiments are used in a hermetic type refrigerating machine, the viewpoint of influence on the thermal / chemical stability and electrical insulation of the refrigerating machine oil Therefore, a low water content is required.
- the acid value of the refrigerating machine oil according to the first to seventh embodiments is not particularly limited, but is contained in the refrigerating machine oil of the present invention in order to prevent corrosion to the metal used in the refrigerating machine or piping. In order to prevent decomposition of the ester, it is preferably 0.1 mgKOH / g or less, more preferably 0.05 mgKOH / g or less.
- the acid value means an acid value measured in accordance with JIS K2501 “Petroleum products and lubricating oil-neutralization number test method”.
- the ash content of the refrigerating machine oil according to the first to seventh embodiments is not particularly limited. However, in order to increase the thermal and chemical stability of the refrigerating machine oil of the present invention and suppress the generation of sludge and the like, preferably 100 mass ppm or less. More preferably, it can be 50 mass ppm or less.
- ash means the value of ash measured in accordance with JIS K2272 “Testing method for ash and sulfated ash of crude oil and petroleum products”.
- the refrigeration oil according to the first to seventh embodiments is used together with the unsaturated fluorinated hydrocarbon refrigerant, and the working fluid composition for the refrigeration machine according to the first to seventh embodiments is an unsaturated fluorinated carbonization. It contains a hydrogen refrigerant.
- an unsaturated fluorinated hydrocarbon having 3 to 5 fluorine atoms is preferable, and 1,2,3,3,3-pentafluoropropene (HFO-1225ye), 1,3,3 , 3-tetrafluoropropene (HFO-1234ze), 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,2,3,3-tetrafluoropropene (HFO - 1234ye), and 3,3 , 3-trifluoropropene (HFO-1243zf) is preferably one or a mixture of two or more. From the viewpoint of the physical properties of the refrigerant, one or more selected from HFO-1225ye, HFO-1234ze, and HFO-1234yf are preferable.
- the refrigerant used in the first to seventh embodiments may be a mixed refrigerant of an unsaturated fluorinated hydrocarbon refrigerant and another refrigerant.
- refrigerants include HFC refrigerants, fluorine-containing ether refrigerants such as bar fluoroethers, and natural refrigerants such as dimethyl ether, ammonia, and hydrocarbons.
- HFC refrigerant examples include hydrofluorocarbons having 1 to 3, preferably 1 to 2 carbon atoms.
- hydrofluorocarbons having 1 to 3, preferably 1 to 2 carbon atoms.
- saturated hydrofluorocarbons include difluoromethane (HFC-32), pentafluoroethane (HFC-125), 1,1,2,2-tetrafluoroethane (HFC-134), 1,1.
- 1,2-Tetrafluoroethane (HFC-134a), 1,1-difluoroethane (HFC-152a), fluoroethane (HFC-161), 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), 1,1,1,2,3,3-hexafluoropropane (HFC-236ea), 1,1,1,3,3,3-hexafluoropropane (HFC-236fa), 1, 1,1,3,3-pentafluoropropane (HFC-245fa), 1,1,1,3,3-pentafluorobutane (HFC-36) mfc) is preferably one or a mixture of two or more thereof, and from the viewpoint of refrigerant physical properties, HFC-32, HFC-125, HFC-134a, HFC-152a, or HFC-32 and HFC- A mixture of 134a is preferred.
- the hydrocarbon refrigerant is preferably a hydrocarbon having 3 to 5 carbon atoms, specifically, for example, methane, ethylene, ethane, propylene, propane, cyclopropane, normal butane, isobutane, cyclobutane, methylcyclopropane, 2-methylbutane. , Normal pentane, or a mixture of two or more thereof.
- those which are gaseous at 25 ° C. and 1 atm are preferably used, and propane, normal butane, isobutane, 2-methylbutane or a mixture thereof is preferable.
- fluorinated ether refrigerant examples include HFE-134p, HFE-245mc, HFE-236mf, HFE-236me, HFE-338mcf, HFE-365mcf, HFE-245mf, HFE-347mmy, HFE-347mcc, HFE-125, HFE-143m, HFE-134m, HFE-227me and the like can be mentioned, and these refrigerants are appropriately selected according to the use and required performance.
- the mixed refrigerant is at least one selected from unsaturated fluorinated hydrocarbon refrigerants (hereinafter referred to as “refrigerant (A)”). , Saturated hydrofluorocarbon, hydrocarbon having 3 to 5 carbon atoms, dimethyl ether, carbon dioxide, bis (trifluoromethyl) sulfide, and trifluoroiodomethane refrigerant (hereinafter referred to as “refrigerant (B)”) .).
- refrigerant (A) unsaturated fluorinated hydrocarbon refrigerants
- B trifluoroiodomethane refrigerant
- the refrigerant used in the first to seventh embodiments is a mixed refrigerant containing the refrigerant (A) and the refrigerant (B), the mixed refrigerant is preferably an azeotropic mixture,
- the azeotropic mixture is not particularly required as long as it has the necessary physical properties, and the mixing ratio of the two is preferably 1:99 to 99: 1, more preferably 5:95 to 95: 5.
- the refrigerant used in the first to seventh embodiments is a mixed refrigerant containing the refrigerant (A) and the refrigerant (B)
- the mixed refrigerant is an unsaturated fluorinated hydrocarbon refrigerant or a saturated hydrofluorocarbon. It may further contain other HFC refrigerants, fluorine-containing ether refrigerants such as bar fluoroethers, hydrocarbons other than hydrocarbons having 3 to 5 carbon atoms, or natural refrigerants such as ammonia.
- the refrigerating machine oil according to the first to seventh embodiments is usually present in the form of a fluid composition for a refrigerating machine mixed with an unsaturated fluorinated hydrocarbon refrigerant or a mixed refrigerant as described above in a refrigerating and air-conditioning apparatus. Yes.
- the mixing ratio of the refrigerating machine oil and the refrigerant in the composition and the mixing ratio of the refrigerating machine oil and the refrigerant in the working fluid composition for the refrigerating machine according to the first to seventh embodiments are not particularly limited.
- the refrigerating machine oil is preferably 1 to 500 parts by mass, more preferably 2 to 400 parts by mass.
- the refrigerating machine oil and the working fluid composition for a refrigerating machine according to the first to seventh embodiments are preferably used for an air conditioner having a reciprocating or rotating hermetic compressor, a refrigerator, or an open or hermetic car air conditioner. It is done. Further, the refrigerating machine oil and the working fluid composition for the refrigerating machine according to the first to seventh embodiments are applied to a dehumidifier, a water heater, a freezer, a freezer / refrigerated warehouse, a vending machine, a showcase, a cooling device for a chemical plant, etc. Preferably used. Furthermore, the refrigerating machine oil and the working fluid composition for the refrigerating machine according to the first to seventh embodiments are also preferably used for those having a centrifugal compressor.
- Example 1-1 to 1-31 and Comparative Examples 1-1 to 1-9 In Examples 1-1 to 1-31 and Comparative Examples 1-1 to 1-9, refrigerating machine oils were prepared using the following base oils and additives, respectively. Tables 1 to 4 show various properties of the obtained refrigerating machine oil.
- Base oil Base oil 1: polyethylene propylene glycol monomethyl ether.
- Base oil 2 polypropylene glycol dimethyl ether.
- Base oil 3 polyvinyl ether.
- B3 Octylphenyl ⁇ -naphthylamine
- Example 2-1 to 2-33 refrigerating machine oils were prepared using the base oils and additives shown below, respectively.
- Various properties of the obtained refrigeration oil are shown in Tables 5 to 8.
- Base oil Base oil 1: polyethylene propylene glycol monomethyl ether.
- Base oil 2 polypropylene glycol dimethyl ether.
- Base oil 3 polyvinyl ether.
- Examples 3-1 to 3-15, Comparative examples 3-1 to 3-9 refrigerating machine oils were prepared using the base oils and additives shown below, respectively. Various properties of the obtained refrigerating machine oil are shown in Tables 9 to 10.
- Base oil Base oil 1: polyethylene propylene glycol monomethyl ether.
- A1 oleylamine salt of di (2-ethylhexyl) acid phosphate
- A2 2-ethylhexylamine salt of dioctyl acid phosphate
- A3 mono (C11 to C14 mixed alkyl) amine salt of dihexyl acid phosphate
- D1 1,2-epoxycyclohexane
- D2 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate
- D3 4- (1′-methylepoxyethyl) -1,2-epoxy-2-methylcyclohexane a1: tricresyl phosphate d1: pt -Butylphenyl glycidyl ether
- Example 4-1 to 4-30, Comparative examples 4-1 to 4-10 In Examples 4-1 to 30 and Comparative Examples 1 to 10, refrigerating machine oils were prepared using the following base oils and additives, respectively. Various properties of the obtained refrigeration oil are shown in Tables 11 to 14.
- Base oil Base oil 1: polyethylene propylene glycol monomethyl ether.
- Base oil 2 polypropylene glycol dimethyl ether.
- Base oil 3 polyvinyl ether.
- Example 5-1 to 5-23 Comparative examples 5-1 to 5-10
- refrigerating machine oils were prepared using the base oils and additives shown below, respectively.
- Tables 15 to 18 show various properties of the obtained refrigerating machine oil.
- Base oil Base oil 1: polyethylene propylene glycol monomethyl ether.
- Base oil 2 polypropylene glycol dimethyl ether.
- Base oil 3 polyvinyl ether.
- Base oil Base oil 1: polyethylene propylene glycol monomethyl ether.
- Base oil 2 polypropylene glycol dimethyl ether.
- Base oil 3 polyvinyl ether.
- B3 Octylphenyl ⁇ -naphthylamine
- Example 7-1 to 7-10 Comparative examples 7-1 to 7-8
- refrigerating machine oils were prepared using the base oils and additives shown below, and the water content was adjusted to a predetermined value. did.
- Tables 25 to 26 show various properties of the obtained refrigerating machine oil.
- Base oil Base oil: Polyethylene propylene glycol monomethyl ether.
- d pt-butylphenylglycidyl ether
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Abstract
Description
(1)エーテル系化合物を含有する基油と、酸性リン酸エステルのアミン塩と、アミン系酸化防止剤と、不飽和フッ化炭化水素冷媒と、を含有する冷凍機用作動流体組成物。
(2)エーテル系化合物を含有する基油と、酸性リン酸エステルのアミン塩と、金属不活性化剤と、不飽和フッ化炭化水素冷媒と、を含有する冷凍機用作動流体組成物。
(3)エーテル系化合物を含有する基油、酸性リン酸エステルのアミン塩および脂環式エポキシ化合物を含有する冷凍機油と、不飽和フッ化炭化水素冷媒と、を含有し、酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、0を超え400質量ppm未満である冷凍機用作動流体組成物。
(4)エーテル系化合物を含有する基油、酸性リン酸エステルのアミン塩および脂環式エポキシ化合物を含有する冷凍機油と、不飽和フッ化炭化水素冷媒と、を含有し、酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、400質量ppm以上である冷凍機用作動流体組成物。
(5)エーテル系化合物を含有する基油、酸性リン酸エステルのアミン塩、アミン系酸化防止剤、金属不活性化剤および脂環式エポキシ化合物を含有する冷凍機油と、不飽和フッ化炭化水素冷媒と、を含有し、酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、0を超え400質量ppm未満である冷凍機用作動流体組成物。
(6)エーテル系化合物を含有する基油、酸性リン酸エステルのアミン塩、アミン系酸化防止剤、金属不活性化剤および脂環式エポキシ化合物を含有する冷凍機油と、不飽和フッ化炭化水素冷媒と、を含有し、酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、400質量ppm以上である冷凍機用作動流体組成物。
(7)エーテル系化合物を含有する基油および脂環式エポキシ化合物を含有し、水分含有量が300~10000質量ppmである冷凍機油と、不飽和フッ化炭化水素冷媒と、を含有する冷凍機用作動流体組成物。
(8)エーテル系化合物を含有する基油と、酸性リン酸エステルのアミン塩と、アミン系酸化防止剤と、を含有し、不飽和フッ化炭化水素冷媒と共に用いられる冷凍機油。
(9)エーテル系化合物を含有する基油と、酸性リン酸エステルのアミン塩と、金属不活性化剤と、を含有し、不飽和フッ化炭化水素冷媒と共に用いられる冷凍機油。
(10)エーテル系化合物を含有する基油、酸性リン酸エステルのアミン塩および脂環式エポキシ化合物を含有し、酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、0を超え400質量ppm未満であり、不飽和フッ化炭化水素冷媒とともに用いられる冷凍機油。
(11)エーテル系化合物を含有する基油、酸性リン酸エステルのアミン塩および脂環式エポキシ化合物を含有し、酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、400質量ppm以上であり、不飽和フッ化炭化水素冷媒とともに用いられる冷凍機油。
(12)エーテル系化合物を含有する基油、酸性リン酸エステルのアミン塩、アミン系酸化防止剤、金属不活性化剤および脂環式エポキシ化合物を含有し、酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、0を超え400質量ppm未満であり、不飽和フッ化炭化水素冷媒とともに用いられる冷凍機油。
(13)エーテル系化合物を含有する基油、酸性リン酸エステルのアミン塩、アミン系酸化防止剤、金属不活性化剤および脂環式エポキシ化合物を含有し、酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、400質量ppm以上であり、不飽和フッ化炭化水素冷媒とともに用いられる冷凍機油。
(14)エーテル系化合物を含有する基油および脂環式エポキシ化合物を含有し、水分含有量が300~10000質量ppmであり、不飽和フッ化炭化水素冷媒とともに用いられる冷凍機油。
飽和ハイドロフルオロカーボンとしては、ジフルオロメタン(HFC-32)、ペンタフルオロエタン(HFC-125)、1,1,2,2-テトラフルオロエタン(HFC-134)、1,1,1,2-テトラフルオロエタン(HFC-134a)、1,1-ジフルオロエタン(HFC-152a)、フルオロエタン(HFC-161)、1,1,1,2,3,3,3-ヘプタフルオロプロパン(HFC-227ea)、1,1,1,2,3,3-ヘキサフルオロプロパン(HFC-236ea)、1,1,1,3,3,3-ヘキサフルオロプロパン(HFC-236fa)、1,1,1,3,3-ペンタフルオロプロパン(HFC-245fa)および1,1,1,3,3-ペンタフルオロブタン(HFC-365mfc)から選ばれる少なくとも1種が好ましく;
炭素数3~5の炭化水素としては、プロパン、ノルマルブタン、イソブタン、2-メチルブタンおよびノルマルペンタンから選ばれる少なくとも1種であることが好ましい。
R1-〔(OR2)f-OR3〕g (1)
[式(1)中、R1は水素原子、炭素数1~10のアルキル基、炭素数2~10のアシル基または水酸基を2~8個有する化合物の残基を表し、R2は炭素数2~4のアルキレン基を表し、R3は水素原子、炭素数1~10のアルキル基または炭素数2~10のアシル基を表し、fは1~80の整数を表し、gは1~8の整数を表す。]
CH3O-(C3H6O)h-CH3 (2)
(式中、hは6~80の数を表す。)
CH3O-(C2H4O)i-(C3H6O)j-CH3 (3)
(式中、iおよびjはそれぞれ1以上であり且つiとjとの合計が6~80となる数を表す。)
C4H9O-(C3H6O)k-H (4)
(式中、kは6~80の数を示す。)
CH3O-(C3H6O)l-H (5)
(式中、lは6~80の数を表す。)
CH3O-(C2H4O)m-(C3H6O)n-H (6)
(式中、mおよびnはそれぞれ1以上であり且つmとnとの合計が6~80となる数を表す。)
C4H9O-(C2H4O)m-(C3H6O)n-H (7)
(式中、mおよびnはそれぞれ1以上であり且つmとnとの合計が6~80となる数を表す。)
CH3COO-(C3H6O)l-COCH3 (8)
(式中、lは6~80の数を表す。)
(i)末端の一方が一般式(14)または(15)で表され、他方が一般式(16)または(17)で表される構造を有しており、一般式(12)におけるR16~R18がいずれも水素原子であり、sが0~4の数であり、R19が炭素数2~4の2価の炭化水素基であり、且つR20が炭素数1~20の炭化水素基であるもの;
(ii)一般式(12)で表される構成単位のみを有するものであって、その末端の一方が一般式(14)で表され、他方が一般式(15)で表される構造を有しており、一般式(12)におけるR16~R18がいずれも水素原子であり、sが0~4の数であり、R19が炭素数2~4の2価の炭化水素基であり、且つR20が炭素数1~20の炭化水素基であるもの;
(iii)末端の一方が一般式(14)または(15)で表され、他方が一般式(16)で表される構造を有しており、一般式(12)におけるR16~R18がいずれも水素原子であり、sが0~4の数であり、R19が炭素数2~4の2価の炭化水素基であり、且つR20が炭素数1~20の炭化水素基であるもの;
(iv)一般式(12)で表される構成単位のみを有するものであって、その末端の一方が一般式(14)で表され、他方が一般式(17)で表される構造を有しており、一般式(12)におけるR16~R18がいずれも水素原子であり、sが0~4の数であり、R19が炭素数2~4の2価の炭化水素基であり、且つR20が炭素数1~20の炭化水素基であるもの。
一般式(25)において、R59およびR60は、それぞれ個別に、炭素数1~16のアルキル基を示す。
さらに、R59またはR60は、より優れた酸化防止効果を得るために、イソブチレンから誘導されるtert-ブチル基、イソブチレンの2量体から誘導される分枝オクチル基、が最も好ましい。
これらのジアルキルアミノアルキルベンゾトリアゾールとしては、例えば、ジメチルアミノメチルベンゾトリアゾール、ジエチルアミノメチルベンゾトリアゾール、ジプロピルアミノメチルベンゾトリアゾール、ジブチルアミノメチルベンゾトリアゾール、ジペンチルアミノメチルベンゾトリアゾール、ジヘキシルアミノメチルベンゾトリアゾール、ジヘプチルアミノメチルベンゾトリアゾール、ジオクチルアミノメチルベンゾトリアゾール、N,N-ビス(2-エチルヘキシル)-メチルベンゾトリアゾール、ジノニルアミノメチルベンゾトリアゾール、ジデシルアミノメチルベンゾトリアゾール、ジウンデシルアミノメチルベンゾトリアゾール、ジドデシルアミノメチルベンゾトリアゾール;ジメチルアミノエチルベンゾトリアゾール、ジエチルアミノエチルベンゾトリアゾール、ジプロピルアミノエチルベンゾトリアゾール、ジブチルアミノエチルベンゾトリアゾール、ジペンチルアミノエチルベンゾトリアゾール、ジヘキシルアミノエチルベンゾトリアゾール、ジヘプチルアミノエチルベンゾトリアゾール、ジオクチルアミノエチルベンゾトリアゾール、ジノニルアミノエチルベンゾトリアゾール、ジデシルアミノエチルベンゾトリアゾール、ジウンデシルアミノエチルベンゾトリアゾール、ジドデシルアミノエチルベンゾトリアゾール;ジメチルアミノメチルトリルトリアゾール、ジエチルアミノメチルトリルトリアゾール、ジプロピルアミノメチルトリルトリアゾール、ジブチルアミノメチルトリルトリアゾール、ジペンチルアミノメチルトリルトリアゾール、ジヘキシルアミノメチルトリルトリアゾール、ジヘプチルアミノメチルトリルトリアゾール、ジオクチルアミノメチルトリルトリアゾール、ジノニルアミノメチルトリルトリアゾール、ジデシルアミノメチルトリルトリアゾール、ジウンデシルアミノメチルトリルトリアゾール、ジドデシルアミノメチルトリルトリアゾール;ジメチルアミノエチルトリルトリアゾール、ジエチルアミノエチルトリルトリアゾール、ジプロピルアミノエチルトリルトリアゾール、ジブチルアミノエチルトリルトリアゾール、ジペンチルアミノエチルトリルトリアゾール、ジヘキシルアミノエチルトリルトリアゾール、ジヘプチルアミノエチルトリルトリアゾール、ジオクチルアミノエチルトリルトリアゾール、ジノニルアミノエチルトリルトリアゾール、ジデシルアミノエチルトリルトリアゾール、ジウンデシルアミノエチルトリルトリアゾール、ジドデシルアミノエチルトリルトリアゾール;またはこれらの混合物等が挙げられる。
エポキシ化脂肪酸モノエステルとしては、例えば、エポキシ化された炭素数12~20の脂肪酸と炭素数1~8のアルコールまたはフェノール、アルキルフェノールとのエステル等が挙げられる。特にエポキシステアリン酸のブチル、ヘキシル、ベンジル、シクロヘキシル、メトキシエチル、オクチル、フェニルおよびブチルフェニルエステルが好ましく挙げられる。上記の脂環式エポキシ化合物は、1種を単独で用いてもよく、2種以上併用してもよい。
実施例1-1~1-31および比較例1-1~1-9においては、それぞれ以下に示す基油および添加剤を用いて冷凍機油を調製した。得られた冷凍機油の各種性状を表1~4に示す。
基油1:ポリエチレンプロピレングリコールモノメチルエーテル。
基油2:ポリプロピレングリコールジメチルエーテル。
基油3:ポリビニルエーテル。
(添加剤)
A1:ジ(2-エチルヘキシル)アシッドホスフェートのオレイルアミン塩
A2:ジオクチルアシッドホスフェートの2-エチルヘキシルアミン塩
A3:ジヘキシルアシッドホスフェートのモノ(C11~C14混合アルキル)アミン塩
B1:ジオクチルジフェニルアミン
B2:ジノニルジフェニルアミン
B3:オクチルフェニルαナフチルアミン
C1:ベンゾトリアゾール
C2:N,N-ビス(2-エチルヘキシル)-メチルベンゾトリアゾール
D1:1,2-エポキシシクロヘキサン
D2:3,4-エポキシシクロヘキシルメチル-3,4-エポキシシクロヘキサンカルボキシレート
D3:4-(1’-メチルエポキシエチル)-1,2-エポキシ-2-メチルシクロヘキサン
a1:トリクレジルホスフェート
b1:2,6-ジ-t-ブチル-p-クレゾール
d1:p-t-ブチルフェニルグリシジルエーテル
d2:グリシジル-2、2’-ジメチルオクタノエート
d3:1,2-エポキシオクタデカン
水分を100質量ppm以下に調整した試料油(初期色相L0.5)30gと、2,3,3,3-テトラフルオロプロペン30gと、触媒(鉄、銅、アルミの各線)とを200mlのステンレス製オートクレーブに封入した後、175℃に加熱して2週間保持し試験した。試験後は冷凍機油組成物の色相、酸価、フッ素イオンの量、および触媒外観変化を測定した。得られた結果を表1~4に示す。
ASTM D2670に準拠し、2,3,3,3-テトラフルオロプロペン10L/hを試料油に吹き込みながら、油温80℃、荷重250LBにて一時間試験を行い、試験後のピン摩耗量を測定した。得られた結果を表1~4に示す。
実施例2-1~2-33および比較例2-1~2-9においては、それぞれ以下に示す基油および添加剤を用いて冷凍機油を調製した。得られた冷凍機油の各種性状を表5~8に示す。
基油1:ポリエチレンプロピレングリコールモノメチルエーテル。
基油2:ポリプロピレングリコールジメチルエーテル。
基油3:ポリビニルエーテル。
(添加剤)
A1:ジ(2-エチルヘキシル)アシッドホスフェートのオレイルアミン塩
A2:ジオクチルアシッドホスフェートの2-エチルヘキシルアミン塩
A3:ジヘキシルアシッドホスフェートのモノ(C11~C14混合アルキル)アミン塩
B1:ジオクチルジフェニルアミン
C1:ベンゾトリアゾール
C2:N,N-ビス(2-エチルヘキシル)-メチルベンゾトリアゾール
D1:1,2-エポキシシクロヘキサン
D2:3,4-エポキシシクロヘキシルメチル-3,4-エポキシシクロヘキサンカルボキシレート
D3:4-(1’-メチルエポキシエチル)-1,2-エポキシ-2-メチルシクロヘキサン
a1:トリクレジルホスフェート
b1:2,6-ジ-t-ブチル-p-クレゾール
c1:2,5-ビス(アルキルジチオ)1,3,4-チアジアゾール
d1:p-t-ブチルフェニルグリシジルエーテル
d2:グリシジル-2、2’-ジメチルオクタノエート
d3:1,2-エポキシオクタデカン
水分を100質量ppm以下に調整した試料油(初期色相L0.5)30gと、2,3,3,3-テトラフルオロプロペン30gと、触媒(鉄、銅、アルミの各線)とを200mlのステンレス製オートクレーブに封入した後、175℃に加熱して2週間保持し試験した。試験後は冷凍機油組成物の色相、酸価、フッ素イオンの量、および触媒外観変化を測定した。得られた結果を表5~8に示す。
ASTM D2670に準拠し、2,3,3,3-テトラフルオロプロペン10L/hを試料油に吹き込みながら、油温80℃、荷重250LBにて一時間試験を行い、試験後のピン摩耗量を測定した。得られた結果を表5~8に示す。
実施例3-1~3-15および比較例3-1~3-9においては、それぞれ以下に示す基油および添加剤を用いて冷凍機油を調製した。得られた冷凍機油の各種性状を表9~10に示す。
基油1:ポリエチレンプロピレングリコールモノメチルエーテル。
(添加剤)
A1:ジ(2-エチルヘキシル)アシッドホスフェートのオレイルアミン塩
A2:ジオクチルアシッドホスフェートの2-エチルヘキシルアミン塩
A3:ジヘキシルアシッドホスフェートのモノ(C11~C14混合アルキル)アミン塩
D1:1,2-エポキシシクロヘキサン
D2:3,4-エポキシシクロヘキシルメチル-3,4-エポキシシクロヘキサンカルボキシレート
D3:4-(1’-メチルエポキシエチル)-1,2-エポキシ-2-メチルシクロヘキサン
a1:トリクレジルホスフェート
d1:p-t-ブチルフェニルグリシジルエーテル
水分を100質量ppm以下に調整した試料油(初期色相L0.5)30gと、2,3,3,3-テトラフルオロプロペン30gと、触媒(鉄、銅、アルミの各線)とを200mlのステンレス製オートクレーブに封入した後、175℃に加熱して2週間保持し試験した。試験後は冷凍機油組成物の色相、酸価、フッ素イオンの量、および触媒外観変化を測定した。得られた結果を表9~10に示す。
ASTM D2670に準拠し、2,3,3,3-テトラフルオロプロペン10L/hを試料油に吹き込みながら、油温80℃、荷重250LBにて一時間試験を行い、試験後のピン摩耗量を測定した。得られた結果を表9~10に示す。
実施例4-1~30および比較例1~10においては、それぞれ以下に示す基油および添加剤を用いて冷凍機油を調製した。得られた冷凍機油の各種性状を表11~14に示す。
基油1:ポリエチレンプロピレングリコールモノメチルエーテル。
基油2:ポリプロピレングリコールジメチルエーテル。
基油3:ポリビニルエーテル。
(添加剤)
A1:ジ(2-エチルヘキシル)アシッドホスフェートのオレイルアミン塩
A2:ジオクチルアシッドホスフェートの2-エチルヘキシルアミン塩
A3:ジヘキシルアシッドホスフェートのモノ(C11~C14混合アルキル)アミン塩
B1:ジオクチルジフェニルアミン
C1:ベンゾトリアゾール
C2:N,N-ビス(2-エチルヘキシル)-メチルベンゾトリアゾール
D1:1,2-エポキシシクロヘキサン
D2:3,4-エポキシシクロヘキシルメチル-3,4-エポキシシクロヘキサンカルボキシレート
D3:4-(1’-メチルエポキシエチル)-1,2-エポキシ-2-メチルシクロヘキサン
a1:トリクレジルホスフェート
d1:p-t-ブチルフェニルグリシジルエーテル
水分を100質量ppm以下に調整した試料油(初期色相L0.5)30gと、2,3,3,3-テトラフルオロプロペン30gと、触媒(鉄、銅、アルミの各線)とを200mlのステンレス製オートクレーブに封入した後、175℃に加熱して2週間保持し試験した。試験後は冷凍機油組成物の色相、酸価、フッ素イオンの量、および触媒外観変化を測定した。得られた結果を表11~14に示す。
ASTM D2670に準拠し、2,3,3,3-テトラフルオロプロペン10L/hを試料油に吹き込みながら、油温80℃、荷重250LBにて一時間試験を行い、試験後のピン摩耗量を測定した。得られた結果を表11~14に示す。
実施例5-1~5-23および比較例5-1~5-10においては、それぞれ以下に示す基油および添加剤を用いて冷凍機油を調製した。得られた冷凍機油の各種性状を表15~18に示す。
基油1:ポリエチレンプロピレングリコールモノメチルエーテル。
基油2:ポリプロピレングリコールジメチルエーテル。
基油3:ポリビニルエーテル。
(添加剤)
A-1:ジ(2-エチルヘキシル)アシッドホスフェートのオレイルアミン塩
A-2:ジオクチルアシッドホスフェートの2-エチルヘキシルアミン塩
A-3:ジヘキシルアシッドホスフェートのモノ(C11~C14混合アルキル)アミン塩
B-1:ジオクチルジフェニルアミン
B-2:ジノニルジフェニルアミン
B-3:オクチルフェニルαナフチルアミン
C-1:ベンゾトリアゾール
C-2:N,N-ビス(2-エチルヘキシル)-メチルベンゾトリアゾール
D-1:1,2-エポキシシクロヘキサン
D-2:3,4-エポキシシクロヘキシルメチル-3,4-エポキシシクロヘキサンカルボキシレート
D-3:4-(1’-メチルエポキシエチル)-1,2-エポキシ-2-メチルシクロヘキサン
a-1:トリクレジルホスフェート
b-1:2,6-ジ-t-ブチル-p-クレゾール
b-2:3,5-ビス(1,1-ジメチル-エチル)-4-ヒドロキシ-ベンゼンプロパン酸C7-C9分岐アルキルエステル
c-1:2,5-ビス(アルキルジチオ)1,3,4-チアジアゾール
d-1:p-t-ブチルフェニルグリシジルエーテル
d-2:グリシジル-2、2’-ジメチルオクタノエート
d-3:1,2-エポキシオクタデカン
水分を100質量ppm以下に調整した試料油(初期色相L0.5)30gと、2,3,3,3-テトラフルオロプロペン30gと、触媒(鉄、銅、アルミの各線)とを200mlのステンレス製オートクレーブに封入した後、175℃に加熱して2週間保持し試験した。試験後は冷凍機油組成物の色相、酸価、フッ素イオンの量、および触媒外観変化を測定した。得られた結果を表15~18に示す。
ASTM D2670に準拠し、2,3,3,3-テトラフルオロプロペン10L/hを試料油に吹き込みながら、油温80℃、荷重250LBにて一時間試験を行い、試験後のピン摩耗量を測定した。得られた結果を表15~18に示す。
実施例6-1~6-46および比較例6-1~6-10においては、それぞれ以下に示す基油および添加剤を用いて冷凍機油を調製した。得られた冷凍機油の各種性状を表19~24に示す。
基油1:ポリエチレンプロピレングリコールモノメチルエーテル。
基油2:ポリプロピレングリコールジメチルエーテル。
基油3:ポリビニルエーテル。
(添加剤)
A1:ジ(2-エチルヘキシル)アシッドホスフェートのオレイルアミン塩
A2:ジオクチルアシッドホスフェートの2-エチルヘキシルアミン塩
A3:ジヘキシルアシッドホスフェートのモノ(C11~C14混合アルキル)アミン塩
B1:ジオクチルジフェニルアミン
B2:ジノニルジフェニルアミン
B3:オクチルフェニルαナフチルアミン
C1:ベンゾトリアゾール
C2:N,N-ビス(2-エチルヘキシル)-メチルベンゾトリアゾール
D1:1,2-エポキシシクロヘキサン
D2:3,4-エポキシシクロヘキシルメチル-3,4-エポキシシクロヘキサンカルボキシレート
D3:4-(1’-メチルエポキシエチル)-1,2-エポキシ-2-メチルシクロヘキサン
a1:トリクレジルホスフェート
a2:ジ(2-エチルヘキシル)アシッドホスフェート
a3:ジラウリルハイドロジェンホスファイト
b1:2,6-ジ-t-ブチル-p-クレゾール
b2:3,5-ビス(1,1-ジメチル-エチル)-4-ヒドロキシ-ベンゼンプロパン酸C7-C9分岐アルキルエステル
c1:2,5-ビス(アルキルジチオ)1,3,4-チアジアゾール
d1:p-t-ブチルフェニルグリシジルエーテル
d2:グリシジル-2、2’-ジメチルオクタノエート
d3:1,2-エポキシオクタデカン
水分を100質量ppm以下に調整した試料油(初期色相L0.5)30gと、2,3,3,3-テトラフルオロプロペン30gと、触媒(鉄、銅、アルミの各線)とを200mlのステンレス製オートクレーブに封入した後、175℃に加熱して2週間保持し試験した。試験後は冷凍機油組成物の色相、酸価、フッ素イオンの量、および触媒外観変化を測定した。得られた結果を表19~24に示す。
ASTM D2670に準拠し、2,3,3,3-テトラフルオロプロペン10L/hを試料油に吹き込みながら、油温80℃、荷重250LBにて一時間試験を行い、試験後のピン摩耗量を測定した。得られた結果を表19~24に示す。
実施例7-1~7-10および比較例7-1~7-8においては、それぞれ以下に示す基油および添加剤を用いて冷凍機油を調製し、さらに水分含有量を所定の値に調整した。得られた冷凍機油の各種性状を表25~26に示す。
基油:ポリエチレンプロピレングリコールモノメチルエーテル。
(添加剤)
A:ジ(2-エチルヘキシル)アシッドホスフェートのオレイルアミン塩ン塩
B:ジオクチルジフェニルアミン
C:ベンゾトリアゾール
D:1,2-エポキシシクロヘキサン
d:p-t-ブチルフェニルグリシジルエーテル
試料油(初期色相L0.5)30gと、2,3,3,3-テトラフルオロプロペン30gと、触媒(鉄、銅、アルミの各線)及び空気50ccとを200mlのステンレス製オートクレーブに封入した後、175℃に加熱して2週間保持し試験した。試験後は冷凍機油組成物の色相、酸価、フッ素イオンの量、および触媒外観変化を測定した。得られた結果を表25~26に示す。
ASTM D2670に準拠し、2,3,3,3-テトラフルオロプロペン10L/hを試料油に吹き込みながら、油温80℃、荷重250LBにて一時間試験を行い、試験後のピン摩耗量を測定した。得られた結果を表25~26に示す。
Claims (19)
- エーテル系化合物を含有する基油と、
酸性リン酸エステルのアミン塩と、
アミン系酸化防止剤、金属不活性化剤及び脂環式エポキシ化合物からなる群より選ばれる少なくとも1種と、
不飽和フッ化炭化水素冷媒と、
を含有する冷凍機用作動流体組成物。 - 前記エーテル系化合物を含有する基油と、
前記酸性リン酸エステルのアミン塩と、
前記アミン系酸化防止剤と、
前記不飽和フッ化炭化水素冷媒と、
を含有する、請求項1に記載の冷凍機用作動流体組成物。 - 前記エーテル系化合物を含有する基油と、
前記酸性リン酸エステルのアミン塩と、
前記金属不活性化剤と、
前記不飽和フッ化炭化水素冷媒と、
を含有する、請求項1に記載の冷凍機用作動流体組成物。 - 前記エーテル系化合物を含有する基油、前記酸性リン酸エステルのアミン塩および前記脂環式エポキシ化合物を含有する冷凍機油と、
前記不飽和フッ化炭化水素冷媒と、
を含有し、
前記酸性リン酸エステルのアミン塩の含有量が、前記冷凍機油全量を基準として、0を超え400質量ppm未満である、請求項1に記載の冷凍機用作動流体組成物。 - 前記エーテル系化合物を含有する基油、前記酸性リン酸エステルのアミン塩および前記脂環式エポキシ化合物を含有する冷凍機油と、
前記不飽和フッ化炭化水素冷媒と、
を含有し、
前記酸性リン酸エステルのアミン塩の含有量が、前記冷凍機油全量を基準として、400質量ppm以上である、請求項1に記載の冷凍機用作動流体組成物。 - 前記エーテル系化合物を含有する基油、前記酸性リン酸エステルのアミン塩、前記アミン系酸化防止剤、前記金属不活性化剤および前記脂環式エポキシ化合物を含有する冷凍機油と、
前記不飽和フッ化炭化水素冷媒と、
を含有し、
前記酸性リン酸エステルのアミン塩の含有量が、前記冷凍機油全量を基準として、0を超え400質量ppm未満である、請求項1に記載の冷凍機用作動流体組成物。 - 前記エーテル系化合物を含有する基油、前記酸性リン酸エステルのアミン塩、前記アミン系酸化防止剤、前記金属不活性化剤および前記脂環式エポキシ化合物を含有する冷凍機油と、
前記不飽和フッ化炭化水素冷媒と、
を含有し、
前記酸性リン酸エステルのアミン塩の含有量が、前記冷凍機油全量を基準として、400質量ppm以上である、請求項1に記載の冷凍機用作動流体組成物。 - エーテル系化合物を含有する基油および脂環式エポキシ化合物を含有し、水分含有量が300~10000質量ppmである冷凍機油と、
前記不飽和フッ化炭化水素冷媒と、
を含有する、請求項1に記載の冷凍機用作動流体組成物。 - 前記不飽和フッ化炭化水素冷媒として、1,2,3,3,3-ペンタフルオロプロペン、1,3,3,3-テトラフルオロプロペン、2,3,3,3-テトラフルオロプロペン、1,2,3,3-テトラフルオロプロペンおよび3,3,3-トリフルオロプロペンから選ばれる少なくとも1種を含有する、請求項1~8のいずれか一項に記載の冷凍機用作動流体組成物。
- 飽和ハイドロフルオロカーボン、炭素数3~5の炭化水素、ジメチルエーテル、二酸化炭素、ビス(トリフルオロメチル)サルファイドおよび3フッ化ヨウ化メタン冷媒から選ばれる少なくとも1種をさらに含有する、請求項1~9のいずれか一項に記載の冷凍機用作動流体組成物。
- 前記不飽和フッ化炭化水素冷媒が、1,2,3,3,3-ペンタフルオロプロペン、1,3,3,3-テトラフルオロプロペン、2,3,3,3-テトラフルオロプロペン、1,2,3,3-テトラフルオロプロペンおよび3,3,3-トリフルオロプロペンから選ばれる少なくとも1種であり、前記飽和ハイドロフルオロカーボンが、ジフルオロメタン、ペンタフルオロエタン、1,1,2,2-テトラフルオロエタン、1,1,1,2-テトラフルオロエタン、1,1-ジフルオロエタン、フルオロエタン、1,1,1,2,3,3,3-ヘプタフルオロプロパン、1,1,1,2,3,3-ヘキサフルオロプロパン、1,1,1,3,3,3-ヘキサフルオロプロパン、1,1,1,3,3-ペンタフルオロプロパンおよび1,1,1,3,3-ペンタフルオロブタンから選ばれる少なくとも1種であり、前記炭素数3~5の炭化水素が、プロパン、ノルマルブタン、イソブタン、2-メチルブタンおよびノルマルペンタンから選ばれる少なくとも1種である、請求項10に記載の冷凍機用作動流体組成物。
- エーテル系化合物を含有する基油と、
酸性リン酸エステルのアミン塩と、
アミン系酸化防止剤、金属不活性化剤及び脂環式エポキシ化合物からなる群より選ばれる少なくとも1種と、
を含有し、不飽和フッ化炭化水素冷媒と共に用いられる冷凍機油。 - 前記エーテル系化合物を含有する基油と、
前記酸性リン酸エステルのアミン塩と、
前記アミン系酸化防止剤と、
を含有し、前記不飽和フッ化炭化水素冷媒と共に用いられる、請求項12に記載の冷凍機油。 - 前記エーテル系化合物を含有する基油と、
前記酸性リン酸エステルのアミン塩と、
前記金属不活性化剤と、
を含有し、前記不飽和フッ化炭化水素冷媒と共に用いられる、請求項12に記載の冷凍機油。 - 前記エーテル系化合物を含有する基油、前記酸性リン酸エステルのアミン塩および前記脂環式エポキシ化合物を含有し、
前記酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、0を超え400質量ppm未満であり、
前記不飽和フッ化炭化水素冷媒とともに用いられる、請求項11に記載の冷凍機油。 - 前記エーテル系化合物を含有する基油、前記酸性リン酸エステルのアミン塩および前記脂環式エポキシ化合物を含有し、
前記酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、400質量ppm以上であり、
前記不飽和フッ化炭化水素冷媒とともに用いられる、請求項12に記載の冷凍機油。 - 前記エーテル系化合物を含有する基油、前記酸性リン酸エステルのアミン塩、前記アミン系酸化防止剤、前記金属不活性化剤および前記脂環式エポキシ化合物を含有し、
前記酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、0を超え400質量ppm未満であり、
不飽和フッ化炭化水素冷媒とともに用いられる、請求項11に記載の冷凍機油。 - 前記エーテル系化合物を含有する基油、前記酸性リン酸エステルのアミン塩、前記アミン系酸化防止剤、前記金属不活性化剤および前記脂環式エポキシ化合物を含有し、
前記酸性リン酸エステルのアミン塩の含有量が、冷凍機油全量を基準として、400質量ppm以上であり、
不飽和フッ化炭化水素冷媒とともに用いられる、請求項12に記載の冷凍機油。 - 前記エーテル系化合物を含有する基油および前記脂環式エポキシ化合物を含有し、水分含有量が300~10000質量ppmであり、
不飽和フッ化炭化水素冷媒とともに用いられる、請求項12に記載の冷凍機油。
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JPWO2020045452A1 (ja) * | 2018-08-28 | 2021-08-10 | Eneos株式会社 | 冷凍機油 |
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Also Published As
Publication number | Publication date |
---|---|
EP2740784A1 (en) | 2014-06-11 |
CN105567397A (zh) | 2016-05-11 |
IN2012DN02044A (ja) | 2015-08-21 |
EP2471896B1 (en) | 2017-05-24 |
CN102482611A (zh) | 2012-05-30 |
EP2471896A1 (en) | 2012-07-04 |
BR112012008167A2 (pt) | 2016-03-01 |
KR20160148725A (ko) | 2016-12-26 |
CN105567397B (zh) | 2019-03-08 |
KR101792643B1 (ko) | 2017-11-02 |
US9090806B2 (en) | 2015-07-28 |
EP2471896A4 (en) | 2013-06-05 |
US20120228541A1 (en) | 2012-09-13 |
CN103589486B (zh) | 2016-08-17 |
EP2733192A1 (en) | 2014-05-21 |
CN102482611B (zh) | 2016-01-20 |
KR20120081089A (ko) | 2012-07-18 |
CN103589486A (zh) | 2014-02-19 |
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