WO2017122788A1 - Huile incongelable, et composition pour utilisation dans une machine frigorifique - Google Patents

Huile incongelable, et composition pour utilisation dans une machine frigorifique Download PDF

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Publication number
WO2017122788A1
WO2017122788A1 PCT/JP2017/001045 JP2017001045W WO2017122788A1 WO 2017122788 A1 WO2017122788 A1 WO 2017122788A1 JP 2017001045 W JP2017001045 W JP 2017001045W WO 2017122788 A1 WO2017122788 A1 WO 2017122788A1
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Prior art keywords
group
refrigerating machine
acid
machine oil
groups
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PCT/JP2017/001045
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English (en)
Japanese (ja)
Inventor
知也 松本
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出光興産株式会社
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Priority to KR1020187019686A priority Critical patent/KR20180101384A/ko
Priority to US16/063,872 priority patent/US20190002792A1/en
Priority to CN201780006501.2A priority patent/CN108431190A/zh
Publication of WO2017122788A1 publication Critical patent/WO2017122788A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/38—Esters of polyhydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/22—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
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
    • C10M107/34—Polyoxyalkylenes
    • C—CHEMISTRY; METALLURGY
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    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/28—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M129/38—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
    • C10M129/40—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms monocarboxylic
    • C—CHEMISTRY; METALLURGY
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    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/86—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of 30 or more atoms
    • C10M129/92—Carboxylic acids
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    • C10M129/86—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of 30 or more atoms
    • C10M129/92—Carboxylic acids
    • C10M129/93—Carboxylic acids having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
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    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
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    • C10M153/00—Lubricating compositions characterised by the additive being a macromolecular compound containing phosphorus
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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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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/10—Carboxylix acids; Neutral salts thereof
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    • C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
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    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
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    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds used as base material
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    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol or ester thereof; bound to an aldehyde, ketonic, ether, ketal or acetal radical
    • C10M2209/043—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol or ester thereof; bound to an aldehyde, ketonic, ether, ketal or acetal radical used as base material
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
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    • C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
    • C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only used as base material
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
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    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C—CHEMISTRY; METALLURGY
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    • C10M2223/041—Triaryl phosphates
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    • C10M2225/00—Organic macromolecular compounds containing phosphorus as ingredients in lubricant compositions
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    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/30—Refrigerators lubricants or compressors lubricants

Definitions

  • the present invention relates to a refrigerating machine oil and a composition for a refrigerating machine using the refrigerating machine oil.
  • the refrigerator has a structure in which a mixture of refrigerant and refrigerator oil (hereinafter also referred to as “composition for refrigerator”) circulates in a closed system, and the refrigerator oil has compatibility with the refrigerant, Stability and lubrication performance are required.
  • composition for refrigerator a mixture of refrigerant and refrigerator oil
  • many refrigerating machine oils containing an oxygen-containing organic compound such as a vinyl ether compound as a main component are used (for example, see Patent Document 1).
  • hydrofluorocarbon HFC
  • hydrochlorofluorocarbon HCFC
  • saturated hydrofluorocarbons saturated HFCs
  • R32 difluoroethane
  • R410A mixture of difluoroethane and pentafluoroethane
  • TCP tricresyl phosphate
  • Patent Document 2 It is known to add a phosphoric acid ester compound having one (see, for example, Patent Document 2). Further, for example, Patent Documents 3 to 5 disclose that a fatty acid alkali metal salt is blended with a refrigerating machine oil for the purpose of improving wear resistance and the like. Further, these Patent Documents 3 to 5 disclose that a phosphate ester compound having one phosphorus atom such as TCP is blended in addition to the fatty acid alkali metal salt.
  • JP-A-6-128578 Japanese Patent Laid-Open No. 10-130683 JP 2001-3072 A Japanese Patent Laid-Open No. 4-300996 WO2008 / 041549
  • the present invention has been made in view of the above problems, and when using a refrigerating machine oil containing an oxygen-containing organic compound as a base oil, it is an object to reduce the friction coefficient while improving wear resistance.
  • the present invention provides the following refrigerating machine oil, a composition for a refrigerating machine, and a method for producing the refrigerating machine oil.
  • a refrigerating machine oil comprising a base oil containing an oxygen-containing organic compound, a polyphosphate ester compound, and a metal salt of an organic carboxylic acid having 6 to 60 carbon atoms.
  • a refrigerating machine composition comprising a refrigerant and the refrigerating machine oil described in (1) above.
  • a refrigerating machine oil capable of reducing the coefficient of friction while improving wear resistance by including a specific phosphorus compound and a metal salt of an organic carboxylic acid in the base oil.
  • the refrigerating machine oil according to an embodiment of the present invention includes a base oil, a polyphosphate ester compound, and an organic carboxylic acid metal salt.
  • a base oil a polyphosphate ester compound
  • an organic carboxylic acid metal salt an organic carboxylic acid metal salt
  • the base oil in this embodiment contains an oxygen-containing organic compound.
  • oxygen-containing organic compounds include synthetic oils containing an ether group, ketone group, ester group, carbonate group, etc. in the molecule, and hetero atoms (sulfur atom, fluorine atom, chlorine atom, silicon atom, nitrogen atom) together with these groups. And synthetic oils containing atoms). More specifically, polyvinyl ethers (PVE), polyoxyalkylene glycols (PAG), poly (oxy) alkylene glycol or a copolymer of its monoether and polyvinyl ether (ECP), and polyol esters (POE) ).
  • An oxygen-containing organic compound may be used individually by 1 type, and may use 2 or more types together.
  • PVE polyvinyl ethers
  • PEG polyoxyalkylene glycols
  • PVE polyvinyl ethers
  • PVE is a polyphosphate ester compound in which R 9 is a group represented by the following general formula (1) and R 9 is represented by the general formula (2).
  • R 9 is a group represented by the following general formula (1)
  • R 9 is represented by the general formula (2).
  • the oxygen-containing organic compound is a main component of the refrigerating machine oil, and the oxygen-containing organic compound is preferably contained in an amount of 70 to 99.98% by mass with respect to the total amount of the refrigerating machine oil, and 90 to 99.5% by mass. %, More preferably 93.0 to 99.3% by mass.
  • Polyvinyl ethers (PVE) are polymers having a structural unit derived from vinyl ether, and specific examples include polyvinyl compounds having a structural unit represented by the following general formula (A-1).
  • R 1a , R 2a and R 3a each independently represent a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, and they may be the same or different from each other.
  • the hydrocarbon group include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, various pentyl groups, and various hexyl groups.
  • R 1a , R 2a and R 3a are more preferably a hydrogen atom or an alkyl group having 3 or less carbon atoms, more preferably a hydrogen atom.
  • r represents the number of repetitions, and the average value is a number in the range of 0 to 10, with 0 being preferred.
  • R 4a represents a divalent hydrocarbon group having 2 to 10 carbon atoms.
  • the divalent hydrocarbon group having 2 to 10 carbon atoms include an ethylene group, a phenylethylene group, 1, 2-propylene group, 2-phenyl-1,2-propylene group, 1,3-propylene group, various butylene groups, various pentylene groups, various hexylene groups, various heptylene groups, various octylene groups, various nonylene groups, various decylene groups
  • a divalent aliphatic hydrocarbon group such as cyclohexane, methylcyclohexane, ethylcyclohexane, dimethylcyclohexane, propylcyclohexane, and other alicyclic hydrocarbon groups having two bonding sites; various phenylene groups; Divalent aromatic carbonization such as various methylphenylene groups, various ethylphenylene groups, various dimethylphenylene groups, various naphthylenes,
  • alkyl aromatic hydrocarbon groups having a bonding site in the base portion Of these, an aliphatic hydrocarbon group having 2 to 4 carbon atoms is more preferred.
  • the plurality of R 4a O may be the same or different.
  • R 5a in the general formula (A-1) represents a hydrocarbon group having 1 to 10 carbon atoms.
  • the hydrocarbon group include a methyl group, an ethyl group, an n-propyl group, and an isopropyl group.
  • Alkyl groups such as n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, various nonyl groups and various decyl groups; cyclopentyl group, Cyclohexyl groups, various methyl cyclohexyl groups, various ethyl cyclohexyl groups, various propyl cyclohexyl groups, various dimethyl cyclohexyl groups and other cycloalkyl groups; phenyl groups, various methyl phenyl groups, various ethyl phenyl groups, various dimethyl phenyl groups, various propyl phenyl groups , Various trimethylphenyl groups, various butylphenyl groups, various naphths An aryl group such as a til group; an arylalkyl group such as
  • R 1a , R 2a and R 3a are all hydrogen atoms, r is 0, and R 5a is an ethyl group.
  • a polymer or copolymer containing 50 to 100 mol% of structural units and 0 to 50 mol% of structural units in which R 5a is an alkyl group having 3 or 4 carbon atoms is preferred.
  • the proportion of structural units in which R 5a is an ethyl group is 70 to 100 mol%, and the proportion of structural units in which R 5a is an alkyl group having 3 or 4 carbon atoms is more preferably 0 to 30 mol%.
  • the former is 80 to 95% and the latter is 5 to 20 mol%.
  • the alkyl group having 3 or 4 carbon atoms of R 5a n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group can be used. Is preferred.
  • the polyvinyl ether compound has a structural unit represented by the general formula (A-1), and the number of repetitions may be appropriately selected according to the desired kinematic viscosity.
  • the said polyvinyl ether type compound can be manufactured by superposition
  • the vinyl ether monomers that can be used here are those represented by the following general formula (A-2).
  • R 1a , R 2a , R 3a , R 4a and R 5a and r are the same as described above.
  • the vinyl ether monomers include various monomers corresponding to the above-mentioned polyvinyl ether compounds.
  • a monovalent group derived from a saturated hydrocarbon, ether, alcohol, ketone, amide, nitrile or the like may be introduced into the terminal portion of the polymer represented by the general formula (A-1) by a known method. Good.
  • the polyvinyl ether compound those having the following terminal structures (1) to (4) are preferable.
  • One end of which is represented by the following general formula (A-1-i) and the other end is represented by the following general formula (A-1-ii) (Wherein R 6a , R 7a and R 8a each independently represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, and they may be the same as or different from each other.
  • R 9a represents carbon A divalent hydrocarbon group having 2 to 10 carbon atoms
  • R 10a is a hydrocarbon group having 1 to 10 carbon atoms
  • r1 is an average value of 0 to 10
  • a plurality of R 9a O may be the same or different.
  • R 11a , R 12a and R 13a each independently represent a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, which may be the same as or different from each other, and R 14a represents carbon A divalent hydrocarbon group of 2 to 10, R 15a represents a hydrocarbon group of 1 to 10 carbon atoms, r2 represents a number having an average value of 0 to 10, and when there are a plurality of R 14a O, a plurality of R 14a O may be the same or different.
  • R 16a , R 17a and R 18a each independently represent a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, and they may be the same as or different from each other.
  • R 19a and R 21a independently represents a divalent hydrocarbon group having 2 to 10 carbon atoms, which may be the same or different from each other, and
  • R 20a and R 22a each independently represents a carbon atom having 1 to 10 carbon atoms.
  • the polyvinyl ether-based mixture may be a mixture of two or more selected from those having the terminal structures (1) to (4). Preferred examples of such a mixture include a mixture of the above (1) and (4), and a mixture of (2) and (3). It is preferable to select a polymerization degree, a terminal structure, etc. so that a polyvinyl ether type compound may become the viscosity range of the preferable base oil mentioned later. Moreover, a polyvinyl ether type compound may be used individually by 1 type, and may be used in combination of 2 or more type.
  • polyvinyl compounds having the structural unit represented by the general formula (A-1) particularly one terminal is represented by the general formula (A-1-i) and the remaining terminal is represented by the general formula (A-1).
  • Those represented by A-1-ii) are preferred.
  • R 6a , R 7a , R 8a , R 11a , R 12a and R 13a are hydrogen atoms, and any of r1 and r2 More preferably, R 10a and R 15a are each an alkyl group having 1 to 4 carbon atoms.
  • PAG Polyoxyalkylene glycols
  • the monovalent hydrocarbon group having 1 to 10 carbon atoms in each of R 1b and R 3b may be linear, branched, or cyclic.
  • the hydrocarbon group is preferably an alkyl group, and specific examples thereof include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, various butyl groups, various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, Various nonyl groups, various decyl groups, cyclopentyl groups, cyclohexyl groups and the like can be mentioned.
  • the monovalent hydrocarbon group has good compatibility with the refrigerant when the number of carbon atoms is 10 or less.
  • the carbon number of the monovalent hydrocarbon group is more preferably 1 to 4.
  • the hydrocarbon group portion of the acyl group having 2 to 10 carbon atoms in each of R 1b and R 3b may be linear, branched or cyclic.
  • the hydrocarbon group portion of the acyl group is preferably an alkyl group, and specific examples thereof include those having 1 to 9 carbon atoms among the alkyl groups that can be selected as R 1b and R 3b described above.
  • a preferred acyl group has 2 to 4 carbon atoms.
  • R 1b and R 3b are both hydrocarbon groups or acyl groups, R 1b and R 3b may be the same or different from each other.
  • n is 2 or more, a plurality of R 3b in one molecule may be the same or different.
  • R 1b is a hydrocarbon group having 1 to 10 carbon atoms having 2 to 6 bonding sites
  • the hydrocarbon group may be a chain or a cyclic one.
  • the hydrocarbon group having two bonding sites is preferably an aliphatic hydrocarbon group, for example, ethylene group, propylene group, butylene group, pentylene group, hexylene group, heptylene group, octylene group, nonylene group, decylene group, cyclopentylene group. Examples thereof include a len group and a cyclohexylene group.
  • hydrocarbon groups examples include residues obtained by removing hydroxyl groups from bisphenols such as biphenol, bisphenol F, and bisphenol A.
  • the hydrocarbon group having 3 to 6 binding sites is preferably an aliphatic hydrocarbon group, for example, trimethylolpropane, glycerin, pentaerythritol, sorbitol, 1,2,3-trihydroxycyclohexane, 1,3,3, Examples thereof include a residue obtained by removing a hydroxyl group from a polyhydric alcohol such as 5-trihydroxycyclohexane.
  • coolant becomes favorable because carbon number of this aliphatic hydrocarbon group shall be 10 or less.
  • the aliphatic hydrocarbon group preferably has 2 to 6 carbon atoms.
  • the oxygen-containing hydrocarbon group having 1 to 10 carbon atoms in each of R 1b and R 3b includes a chain aliphatic group having an ether bond, a cyclic aliphatic group (for example, a tetrahydrofurfuryl group), and the like. Can be mentioned. At least one of R 1b and R 3b is preferably an alkyl group, particularly an alkyl group having 1 to 4 carbon atoms.
  • R 2b in the general formula (B-1) is an alkylene group having 2 to 4 carbon atoms, and examples of the oxyalkylene group of the repeating unit include an oxyethylene group, an oxypropylene group, and an oxybutylene group.
  • the oxyalkylene groups in one molecule may be the same, or two or more oxyalkylene groups may be contained, but those containing at least an oxypropylene unit in one molecule are preferable. More preferably, it contains 50 mol% or more of oxypropylene units.
  • n is an integer of 1 to 6, and is determined according to the number of R 1b binding sites.
  • n is 1, and when R 1b is an aliphatic hydrocarbon group having 2, 3, 4, 5, and 6 binding sites, n is 2, 3 respectively. , 4, 5 and 6.
  • m is a number with an average value of m ⁇ n of 6 to 80. When the average value is 80 or less, the compatibility is improved.
  • N is preferably an integer of 1 to 3, more preferably 1.
  • the average value of m ⁇ n is preferably set as appropriate so as to be within a preferable viscosity range of the base oil described later.
  • the polyoxyalkylene glycols represented by the general formula (B-1) include polyoxyalkylene glycols having a hydroxyl group at the terminal, and the content of the hydroxyl group is 50 mol with respect to all terminal groups. %, It can be used preferably even if it is contained.
  • the copolymer of poly (oxy) alkylene glycol or its monoether and polyvinyl ether that can be used as the base oil in the refrigerating machine oil of this embodiment is represented by the following general formula (C-1).
  • copolymers represented by general formula (C-2) hereinafter referred to as polyvinyl ether copolymer I and polyvinyl ether copolymer II), respectively.
  • Poly (oxy) alkylene glycol refers to both polyalkylene glycol and polyoxyalkylene glycol.
  • R 1c , R 2c and R 3c each independently represent a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, which may be the same or different from each other, and R 5c is A divalent hydrocarbon group having 2 to 4 carbon atoms, R 6c is an aliphatic or alicyclic hydrocarbon group having 1 to 20 carbon atoms, an aromatic hydrocarbon group having 1 to 20 carbon atoms, or 2 to 20 carbon atoms An acyl group or an oxygen-containing hydrocarbon group having 2 to 50 carbon atoms, R 4c represents a hydrocarbon group having 1 to 10 carbon atoms, and when there are a plurality of R 1c to R 6c , they may be the same or different. Good.
  • the hydrocarbon group having 1 to 8 carbon atoms of R 1c to R 3c is specifically a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- Alkyl groups such as butyl group, tert-butyl group, various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups; cyclopentyl group, cyclohexyl group, various methylcyclohexyl groups, various ethylcyclohexyl groups, various dimethylcyclohexyl groups, etc.
  • a cycloalkyl group an aryl group such as various dimethylphenyl groups; and an arylalkyl group such as a benzyl group, various phenylethyl groups, and various methylbenzyl groups.
  • a hydrogen atom is especially preferable as each of these R1c , R2c, and R3c.
  • examples of the divalent hydrocarbon group having 2 to 4 carbon atoms represented by R 5c include divalent alkylene groups such as a methylene group, an ethylene group, various propylene groups, and various butylene groups.
  • v represents the number of repeating R 5c O, and the average value thereof is 1 to 50, preferably 1 to 20, more preferably 1 to 10, and particularly preferably 1 to 5. The number of ranges.
  • R 5c O there is a plurality the plurality of R 5c O may be the same or different.
  • v may be the same for each structural unit, or may be different.
  • W represents a number of 1 to 50, preferably 1 to 10, more preferably 1 to 2, particularly preferably 1, u represents 0 to 50, preferably 2 to 25, more preferably 5 to 15, When there are a plurality of w and u, each of them may be block or random.
  • R 6c in formula (C-1) preferably represents an alkyl group having 1 to 10 carbon atoms, an acyl group having 2 to 10 carbon atoms, or an oxygen-containing hydrocarbon group having 2 to 50 carbon atoms.
  • Specific examples of the alkyl group having 1 to 10 carbon atoms include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, and various pentyl groups.
  • acyl group having 2 to 10 carbon atoms include acetyl group, propionyl group, butyryl group, isobutyryl group, valeryl group, isovaleryl group, piperoyl group, benzoyl group, and toluoyl group.
  • oxygen-containing hydrocarbon group having 2 to 50 carbon atoms include methoxymethyl group, methoxyethyl group, methoxypropyl group, 1,1-bismethoxypropyl group, 1,2-bismethoxypropyl group, ethoxy
  • Preferable examples include propyl group, (2-methoxyethoxy) propyl group, (1-methyl-2-methoxy) propyl group and the like.
  • the hydrocarbon group having 1 to 10 carbon atoms represented by R 4c is specifically a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, Alkyl groups such as isobutyl group, various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, various nonyl groups, various decyl groups; cyclopentyl group, cyclohexyl group, various methylcyclohexyl groups, various ethylcyclohexyl groups, various propylcyclohexyl groups Groups, cycloalkyl groups such as various dimethylcyclohexyl groups; phenyl groups, various methylphenyl groups, various ethylphenyl groups, various dimethylphenyl groups, various propylphenyl groups, various trimethylphenyl groups, various butyl
  • Aryl group; benzyl group, various phenylethyl groups, An arylalkyl group such as various methylbenzyl groups, various phenylpropyl groups, and various phenylbutyl groups is shown.
  • R 1c to R 5c and v are the same as described above.
  • R 4c and R 5c may be the same or different when there are a plurality of R 4c and R 5c .
  • x and y each represent a number from 1 to 50, and when there are a plurality of x and y, each may be a block or random.
  • X c and Y c each independently represent a hydrogen atom, a hydroxyl group, or a hydrocarbon group having 1 to 20 carbon atoms.
  • repeating numbers u, w, x, and y in the general formulas (C-1) and (C-2) are appropriately selected so as to have a desired viscosity described later.
  • group copolymers I and II what is necessary is just a method by which it is obtained, and there is no restriction
  • the vinyl ether copolymer I represented by the general formula (C-1) has one terminal represented by the following general formula (C-3) or (C-4), and the remaining terminal
  • the polyvinyl ether copolymer I having the structure represented by the general formula (C-5) or (C-6) can be obtained.
  • R 1c to R 6c and v are the same as described above.
  • R 1c to R 6c and v are the same as described above.
  • polyol ester that can be used as the base oil in the refrigerating machine oil
  • an ester of a diol or a polyol having 3 to 20 hydroxyl groups and a fatty acid having 1 to 24 carbon atoms is preferably used.
  • diol examples include ethylene glycol, 1,3-propanediol, propylene glycol, 1,4-butanediol, 1,2-butanediol, 2-methyl-1,3-propanediol, 1,5- Pentanediol, neopentyl glycol, 1,6-hexanediol, 2-ethyl-2-methyl-1,3-propanediol, 1,7-heptanediol, 2-methyl-2-propyl-1,3-propanediol 2,2-diethyl-1,3-propanediol, 1,8-octanediol, 1,9-nonanediol, 1,10-decanediol, 1,11-undecanediol, 1,12-dodecanediol, etc.
  • polyol examples include trimethylolethane, trimethylolpropane, trimethylolbutane, di- (trimethylolpropane), tri- (trimethylolpropane), pentaerythritol, di- (pentaerythritol), and tri- (pentaerythritol).
  • Glycerin polyglycerin (glycerin 2 to 20-mer), 1,3,5-pentanetriol, sorbitol, sorbitan, sorbitol glycerin condensate, adonitol, arabitol, xylitol, mannitol and other polyhydric alcohols, xylose, arabinose, Ribose, rhamnose, glucose, fructose, galactose, mannose, sorbose, cellobiose, maltose, isomaltose, trehalose, sucrose, raffinose, gen Anosu, saccharides such as Merenjitosu, and their partially etherified products and methyl glucosides (glycosides) and the like.
  • neopentyl glycol trimethylol ethane, trimethylol propane, trimethylol butane, di- (trimethylol propane), tri- (trimethylol propane), pentaerythritol, di- (pentaerythritol), tri Hindered alcohols such as-(pentaerythritol) are preferred.
  • the number of carbon atoms is not particularly limited, but those having 1 to 24 carbon atoms are usually used.
  • those having 3 or more carbon atoms are preferable, those having 4 or more carbon atoms are more preferable, and those having 5 or more carbon atoms are even more preferable from the viewpoint of lubricity.
  • a C18 or less thing is preferable, a C12 or less thing is more preferable, and a C9 or less thing is still more preferable.
  • any of a linear fatty acid and a branched fatty acid may be sufficient, a linear fatty acid is preferable from the point of lubricity, and a branched fatty acid is preferable from the point of hydrolysis stability. Furthermore, either a saturated fatty acid or an unsaturated fatty acid may be used.
  • fatty acids include isobutyric acid, pentanoic acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, tetradecanoic acid, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid, octadecanoic acid , Linear or branched ones such as nonadecanoic acid, icosanoic acid and oleic acid, or so-called neoacids in which the ⁇ carbon atom is quaternary.
  • the polyol ester may be a partial ester remaining without all the hydroxyl groups of the polyol being esterified, or may be a complete ester in which all the hydroxyl groups are esterified, or a partial ester and a complete ester. A complete ester is preferable.
  • neopentyl glycol trimethylol ethane, trimethylol propane, trimethylol butane, di- (trimethylol propane), tri- (trimethylol propane), pentaerythritol
  • esters of hindered alcohols such as di- (pentaerythritol) and tri- (pentaerythritol)
  • esters of neopentyl glycol, trimethylol ethane, trimethylol propane, trimethylol butane and pentaerythritol The ester of pentaerythritol is most preferred because it is particularly excellent in compatibility with the refrigerant and hydrolytic stability.
  • preferred polyol esters include neopentyl glycol and isobutyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, oleic acid, isopentanoic acid, 2-methylhexanoic acid and 2-ethylpentane.
  • the ester with two or more fatty acids may be a mixture of two or more of one kind of fatty acid and a polyol.
  • Two or more kinds of mixed fatty acid and an ester of a polyol, in particular, an ester of a mixed fatty acid and a polyol Excellent low temperature characteristics and compatibility with refrigerants.
  • the oxygen-containing organic compound contained in the refrigerating machine oil preferably has a kinematic viscosity at 100 ° C. of 1 to 30 mm 2 / s.
  • the kinematic viscosity is 1 mm 2 / s or more, good lubrication performance is exhibited and the sealing performance is improved.
  • it is 30 mm ⁇ 2 > / s or less, it is excellent in compatibility with a refrigerant
  • the 100 ° C. kinematic viscosity of the oxygen-containing organic compound is more preferably 2 to 20 mm 2 / s, and further preferably 3 to 15 mm 2 / s.
  • the base oil may consist of only the oxygen-containing organic compound, but in addition to the oxygen-containing organic compound, mineral oil, synthetic oil other than the oxygen-containing organic compound, or these may be used as long as the object of the present invention is not impaired. Both of them may be contained.
  • the base oil other than the oxygen-containing organic compound is preferably less than 10% by mass, more preferably less than 5% by mass, and more preferably less than 1% by mass with respect to the total amount of refrigerating machine oil. preferable.
  • the base oil other than the oxygen-containing organic compound has a kinematic viscosity at 100 ° C. of preferably 1 to 30 mm 2 / s, more preferably 2 to 20 mm 2 / s, and further preferably 3 to 15 mm 2 / s. s.
  • the polyphosphate ester compound contained in the refrigerating machine oil of this embodiment is a phosphate ester compound having at least two phosphate skeletons in one molecule.
  • the polyphosphate ester compound is specifically a compound represented by the following general formula (1).
  • n represents an integer of 1 to 10
  • R 1 to R 8 each independently represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms
  • R 9 represents a carbon number of 2 to 20 represents a divalent hydrocarbon group.
  • the refrigerating machine oil of the present embodiment contains the above-mentioned polyphosphate ester compound and the organic carboxylic acid metal salt described later, thereby reducing the friction coefficient at the sliding part of the refrigerating machine and improving the wear resistance. It becomes possible to do.
  • a polyphosphate ester type compound may be used individually by 1 type, and may use 2 or more types together.
  • the alkyl group in R 1 to R 8 may be linear, branched or cyclic, and may be a methyl group, an ethyl group, an n-propyl group, an isopropyl group, various butyl groups, or various pentyl groups.
  • R 1 to R 8 are preferably a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, more preferably a hydrogen atom or a methyl group, and most preferably a hydrogen atom.
  • R 9 in the general formula (1) is preferably an alkylene group, an arylene group, or a hydrocarbon group composed of an arylene group and an alkylene group, and preferably includes an arylene group.
  • the alkylene group is, for example, an ethylene group, a propylene group, a butylene group, a pentylene group, a hexylene group, a heptylene group, an octylene group, a nonylene group, a decylene group, an undecylene group, A dodecylene group, a tetradecylene group, a hexadecylene group, an octadecylene group, an icosalen group, etc.
  • the alkylene group may be a cyclic alkylene group such as a cyclopropylene group, a cyclobutylene group, a cyclopentylene group, a cyclohexylene group, a cycloheptylene group, a cyclooctylene group, a dicyclopentylene group, or a tricyclopentylene group. Good.
  • the arylene group may be either substituted or unsubstituted, and specific examples include a substituted or unsubstituted phenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted biphenyl group,
  • the arylene group is preferably unsubstituted. Of these, a phenylene group is preferred.
  • R 9 is composed of an arylene group and an alkylene group
  • the arylene group is the same as described above, and examples of the alkylene group include a linear, branched, or cyclic alkylene group having 1 to 14 carbon atoms.
  • a methylene group or the same as described above can be used.
  • n is preferably 1 to 8
  • n may be a single substance composed of a specific kind, or n may be a mixture composed of two or more kinds.
  • n is more preferably 1 to 3, and n is particularly preferably 1.
  • R 9 are preferably groups represented by the following general formulas (2) to (4), more preferably groups represented by the general formula (2) or (3), The group represented by the general formula (2) is more preferable.
  • general formula (2) may be any of ortho form, meta form and para form, meta form is preferred.
  • preferable polyphosphate ester compounds include compounds represented by the following general formulas (5) and (6). In these, the compound shown by the following general formula (5) is more preferable.
  • n represents an integer of 1 to 10, preferably 1 to 8, and more preferably 1 to 5.
  • the polyphosphate ester compound represented by the general formula (5) exhibits the effect of improving the wear resistance and reducing the friction coefficient when the base oil contains PVE as the oxygen-containing organic compound. When n is 1 to 3, particularly when n is 1, the effect is easily exhibited.
  • the content of the polyphosphate ester compound is preferably 0.01 to 5.0% by mass with respect to the total amount of the refrigerating machine oil.
  • the content of the polyphosphate ester compound is 0.5 to 5. 0% by mass is more preferable, 1.0 to 5.0% by mass is further preferable, and 1.0 to 3.0% by mass is particularly preferable.
  • Organic carboxylic acid metal salt The organic carboxylic acid used in the organic carboxylic acid metal salt of the present embodiment has 6 to 60 carbon atoms.
  • the organic carboxylic acid is preferably an organic carboxylic acid having 6 to 24 carbon atoms, and more preferably an organic carboxylic acid having 16 to 20 carbon atoms.
  • Examples of organic carboxylic acids include aliphatic saturated monocarboxylic acids, aliphatic unsaturated monocarboxylic acids, aliphatic dicarboxylic acids, aromatic carboxylic acids, and alicyclic carboxylic acids.
  • More specific examples include aliphatic saturated monocarboxylic acids such as caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, cerotic acid, and laccelic acid.
  • 2-methylpentanoic acid 2,2-dimethylbutanoic acid, 2-methylhexanoic acid, 5-methylhexanoic acid, 2,2-dimethylheptanoic acid, 2-ethyl-2-methylbutanoic acid, 2-ethylhexanoic acid
  • Examples include branched fatty acids such as dimethylhexanoic acid, 2-n-propyl-pentanoic acid, 3,5,5-trimethylhexanoic acid, dimethyloctanoic acid, isotridecanoic acid, isomyristic acid, isostearic acid, isoarachidic acid, and isohexanoic acid.
  • Examples of the aliphatic unsaturated monocarboxylic acid include palmitoleic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid and the like, and unsaturated hydroxy acids such as ricinoleic acid.
  • Examples of the aliphatic dicarboxylic acid include adipic acid, azelaic acid, and sebacic acid, and examples of the aromatic carboxylic acid include benzoic acid, phthalic acid, trimellitic acid, and pyrometic acid.
  • Examples of the alicyclic carboxylic acid include naphthenic acid. Moreover, dimer acid of various fatty acids, trimer acid, etc. may be sufficient.
  • organic carboxylic acids may be used individually by 1 type, and may be used in combination of 2 types.
  • the organic carboxylic acid is preferably an aliphatic saturated monocarboxylic acid having 16 to 20 carbon atoms and an aliphatic unsaturated monocarboxylic acid having 16 to 20 carbon atoms, and among them, an aliphatic unsaturated monocarboxylic acid such as oleic acid is preferable. Acid is more preferred.
  • the metal constituting the organic carboxylic acid metal salt include alkali metals such as lithium, potassium and sodium, alkaline earth metals such as magnesium, calcium and strontium, and zinc, nickel and aluminum as other metals. be able to.
  • Preferred metals are alkali metals and alkaline earth metals, more preferably alkali metals, particularly preferably potassium. These metals are not limited to one type and may be used in combination of two or more types.
  • potassium oleate is particularly preferable among the above.
  • the content of the organic carboxylic acid metal salt in the refrigerating machine oil is preferably 1 ppm or more in terms of metal concentration with respect to the total amount (mass) of the refrigerating machine oil.
  • the content of the organic carboxylic acid metal salt is preferably 1 to 20 ppm, more preferably 1 to 10 ppm, more preferably 1 to 10 ppm in terms of the metal concentration with respect to the total amount of the refrigerating machine oil. Particularly preferred is 5 ppm.
  • Any method may be used for blending the organic carboxylic acid metal salt into the refrigerating machine oil, but it is preferable to blend a solvent in which the organic carboxylic acid metal salt is dissolved or dispersed in advance into the refrigerating machine oil.
  • the method for obtaining a solvent in which an organic carboxylic acid metal salt is dissolved or dispersed is not particularly limited, and may be obtained by reacting an organic carboxylic acid and a metal salt in a solvent.
  • the organic carboxylic acid metal salt obtained above may be obtained by dissolving or dispersing in a solvent.
  • the solvent is not particularly limited as long as it can dissolve or disperse the organic carboxylic acid metal salt, and examples thereof include various alcohols and ethers.
  • ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene Polyhydric alcohols such as glycol, 1,4-butylene glycol, 2,3-butylene glycol, hexylene glycol, octylene glycol and glycerin are preferred, with dipropylene glycol being more preferred.
  • the amount of the solvent used is usually 5 to 50 times based on the carboxylic acid metal salt (mass).
  • the refrigerating machine oil according to the present embodiment further includes an antioxidant, an acid scavenger, an antifoaming agent, an extreme pressure agent, an oily agent, and an oxygen scavenger in addition to the polyphosphate ester compound and the organic carboxylic acid metal salt.
  • an antioxidant an acid scavenger, an antifoaming agent, an extreme pressure agent, an oily agent, and an oxygen scavenger in addition to the polyphosphate ester compound and the organic carboxylic acid metal salt.
  • Any one or more of various additives such as a metal deactivator and a rust inhibitor may be contained. That is, the refrigerating machine oil may be composed of a base oil, the polyphosphate ester compound, and the organic carboxylic acid metal salt, or a base oil, the polyphosphate ester compound, and the organic carboxylic acid.
  • the base oil may contain mineral oil and synthetic oil other than the oxygen-containing organic compound in addition to the oxygen-containing organic compound, but is preferably composed of the oxygen-containing organic compound.
  • the additives other than the polyphosphate ester compound and the organic carboxylic acid metal salt are contained in an amount of preferably 15% by mass or less, more preferably 0 to 5% by mass with respect to the total amount of the refrigerating machine oil.
  • Antioxidants include 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,2′-methylenebis (4-methyl-6-tert Phenyl-based antioxidants such as phenyl- ⁇ -naphthylamine and N, N′-di-phenyl-p-phenylenediamine are preferred, and phenolic antioxidants are preferred.
  • the content of the antioxidant is usually 0.01 to 5% by mass, preferably 0.05 to 3% by mass, based on the total amount of the refrigerating machine oil, from the viewpoints of effects and economy.
  • the acid scavenger examples include epoxy compounds such as phenyl glycidyl ether, alkyl glycidyl ether, alkylene glycol glycidyl ether, cyclohexene oxide, ⁇ -olefin oxide, and epoxidized soybean oil.
  • epoxy compounds such as phenyl glycidyl ether, alkyl glycidyl ether, alkylene glycol glycidyl ether, cyclohexene oxide, ⁇ -olefin oxide, and epoxidized soybean oil.
  • phenyl glycidyl ether, alkyl glycidyl ether, alkylene glycol glycidyl ether, cyclohexene oxide, and ⁇ -olefin oxide are preferable in terms of compatibility.
  • the alkyl group of the alkyl glycidyl ether and the alkylene group of the alkylene glycol glycidyl ether may have a branch, and usually have 3 to 30, preferably 4 to 24, and particularly preferably 6 to 16 carbon atoms. is there.
  • the ⁇ -olefin oxide generally has a total carbon number of 4 to 50, preferably 4 to 24, particularly 6 to 16.
  • one type of acid scavenger may be used, or two or more types may be used in combination.
  • the content thereof is usually 0.005 to 5% by mass, preferably 0.05 to 3% by mass, based on the total amount of the refrigerating machine oil, from the viewpoints of effects and suppression of sludge generation.
  • the stability of refrigerating machine oil can be improved by containing an acid scavenger.
  • an antifoamer a silicone type antifoamer, a fluorinated silicone type antifoamer, etc. can be mentioned, for example.
  • the content of the antifoaming agent is usually 0.005 to 2% by mass, preferably 0.01 to 1% by mass, based on the total amount of refrigerating machine oil.
  • extreme pressure agents include phosphorous extreme pressure agents such as phosphate esters, acid phosphate esters, phosphite esters, acid phosphite esters, and amine salts thereof. These phosphorus-based extreme pressure agents have one phosphorus atom in the molecule, and include tricresyl phosphate, trithiophenyl phosphate, tri (nonylphenyl) phosphite, dioleyl hydrogen phosphite, 2-ethylhexyl. Examples thereof include diphenyl phosphite.
  • extreme pressure agents other than the above include sulfur-based extreme pressure agents such as sulfurized fats and oils, sulfurized fatty acids, sulfurized esters, sulfurized olefins, dihydrocarbyl polysulfides, thiocarbamates, thioterpenes, and dialkylthiodipropionates. be able to.
  • the content of the extreme pressure agent is usually 0.001 to 5% by mass, particularly preferably 0.005 to 3% by mass, based on the total amount of refrigerating machine oil, from the viewpoint of lubricity and stability.
  • One of these extreme pressure agents may be used alone, or two or more thereof may be used in combination.
  • oily agents include aliphatic saturated and unsaturated monocarboxylic acids such as stearic acid and oleic acid, polymerized fatty acids such as dimer acid and hydrogenated dimer acid, hydroxy fatty acids such as ricinoleic acid and 12-hydroxystearic acid, lauryl Aliphatic saturated and unsaturated monoalcohols such as alcohol, oleyl alcohol, aliphatic saturated and unsaturated monoamines such as stearylamine and oleylamine, aliphatic saturated and unsaturated monocarboxylic amides such as lauric acid amide and oleic acid amide, glycerin And partial esters of polyhydric alcohols such as sorbitol and aliphatic saturated or unsaturated monocarboxylic acids. These may be used individually by 1 type and may be used in combination of 2 or more type. The content thereof is usually selected in the range of 0.01 to 10% by mass, preferably 0.1 to 5% by mass with respect to the total amount of the refrig
  • oxygen scavenger examples include 4,4′-thiobis (3-methyl-6-tert-butylphenol), diphenyl sulfide, dioctyl diphenyl sulfide, dialkyl diphenylene sulfide, benzothiophene, dibenzothiophene, phenothiazine, benzothiapyran, thiapyran, thianthrene, Examples thereof include sulfur-containing aromatic compounds such as dibenzothiapyran and diphenylene disulfide, aliphatic unsaturated compounds such as various olefins, dienes and trienes, and terpenes having a double bond.
  • Examples of the metal deactivator include N- [N, N′-dialkyl (alkyl group having 3 to 12 carbon atoms) aminomethyl] triazole.
  • Examples of the rust preventive include metal sulfonates, aliphatic amines, organic phosphites, organic phosphates, organic sulfonates, organic phosphates, alkenyl succinates, polyhydric alcohol esters, and the like. be able to.
  • the refrigerating machine oil according to the present embodiment can further contain other known various additives as long as the object of the present invention is not impaired.
  • the refrigerating machine oil according to the present embodiment is used in a refrigerant environment, and specifically is used in a refrigerating machine after being mixed with a refrigerant. That is, in this embodiment, it uses for a refrigerator with the form of the composition for refrigerators containing refrigerator oil and a refrigerant
  • the amount of refrigerant and refrigerator oil used is preferably in the range of 99/1 to 10/90, more preferably 95/5 to 30/70, by mass ratio of refrigerant / refrigerant oil. When this mass ratio is within the above range, the refrigerating capacity and lubricity in the refrigerator can be made appropriate.
  • the refrigerant to be used include one or two or more kinds selected from fluorinated hydrocarbons, natural refrigerants such as carbon dioxide, hydrocarbons, and ammonia.
  • fluorinated hydrocarbon examples include a saturated fluorinated hydrocarbon compound (saturated HFC) and an unsaturated fluorinated hydrocarbon compound (HFO).
  • saturated fluorinated hydrocarbon compound is usually an alkane fluoride having 1 to 4 carbon atoms, preferably an alkane fluoride having 1 to 3 carbon atoms, and an alkane having 1 to 2 carbon atoms (methane or ethane). Fluoride is more preferred.
  • Specific methane or ethane fluorides include trifluoromethane (R23), difluoromethane (R32), 1,1-difluoroethane (R152a), 1,1,1-trifluoroethane (R143a), 1,1, 2-trifluoroethane (R143), 1,1,1,2-tetrafluoroethane (R134a), 1,1,2,2-tetrafluoroethane (R134), 1,1,1,2,2-penta Fluoroethane (R125) can be mentioned, among which difluoromethane and 1,1,1,2,2-pentafluoroethane are preferable.
  • These saturated fluorinated hydrocarbon compounds may be used alone or in combination of two or more.
  • 2 mixed refrigerants in which two or more kinds of saturated fluorinated hydrocarbon compounds having 1 to 3 carbon atoms are mixed, or 2 kinds of saturated fluorinated hydrocarbon compounds having 1 to 2 carbon atoms are used.
  • species or more is mentioned.
  • Specific examples of the mixed refrigerant include a mixture of R32 and R125 (R410A), a mixture of R125, R143a and R134a (R404A), a mixture of R32, R125 and R134a (R407A, R407C, R407E, etc.), and a mixture of R125 and R143a ( R507A) and the like.
  • unsaturated fluorinated hydrocarbon compounds include those having a carbon-carbon double bond, such as linear or branched chain olefins having 2 to 6 carbon atoms and fluorinated products of cyclic olefins having 4 to 6 carbon atoms. Can be mentioned.
  • ethylene introduced with 1 to 3 fluorine atoms
  • propene introduced with 1 to 5 fluorine atoms
  • butene introduced with 1 to 7 fluorine atoms
  • 1 to 9 Penten introduced with fluorine atoms
  • hexene introduced with 1 to 11 fluorine atoms
  • cyclobutene introduced with 1 to 5 fluorine atoms
  • cyclopentene introduced with 1 to 7 fluorine atoms
  • 1 to 9 cyclohexene introduced with one fluorine atom.
  • propene fluoride is preferable, propene having 3 to 5 fluorine atoms introduced is more preferable, and propene having 4 fluorine atoms introduced is most preferable.
  • 1,3,3,3-tetrafluoropropene (HFO1234ze) and 2,3,3,3-tetrafluoropropene (HFO1234yf) are preferable compounds.
  • These unsaturated fluorinated hydrocarbon compounds may be used alone or in combination of two or more, or may be used in combination with a refrigerant other than the unsaturated fluorinated hydrocarbon compound. .
  • a mixed refrigerant of a saturated fluorinated hydrocarbon compound and an unsaturated fluorinated hydrocarbon compound can be given as an example of a case where the refrigerant is used in combination with a refrigerant other than the unsaturated fluorinated hydrocarbon compound.
  • Specific examples of the mixed refrigerant include a mixed refrigerant of R-32, HFO1234ze, and R152a (AC5, the mixing ratio is 13.23: 76.20: 9.96).
  • Natural refrigerants include carbon dioxide (carbon dioxide), hydrocarbons such as propane, n-butane, isobutane, 2-methylbutane, n-pentane, cyclopentane, isobutane, and normal butane, and ammonia. 1 type may be used independently, 2 or more types may be used in combination, and it may combine with refrigerants other than a natural system refrigerant.
  • a mixed refrigerant with a saturated fluorinated hydrocarbon compound, an unsaturated fluorinated hydrocarbon compound, or both of these can be mentioned.
  • Specific examples of the mixed refrigerant include a mixed refrigerant of carbon dioxide, HFO1234ze, and R134a (AC6, blending ratio is 5.15: 79.02: 15.41).
  • fluorinated hydrocarbons are preferable, and saturated fluorinated hydrocarbon compounds are more preferable.
  • the refrigerant may be a mixture of a saturated fluorinated hydrocarbon compound and another refrigerant, but is preferably composed of only a saturated fluorinated hydrocarbon compound.
  • R32, R125, and R410A which is a mixture thereof are more preferable.
  • the refrigerant preferably contains R32.
  • the ratio of R32 in the whole refrigerant is preferably 50% by mass or more, more preferably 70% by mass or more, and 100% by mass, that is, R32 alone, based on the total amount of refrigerant.
  • the refrigerant is most preferable.
  • the refrigerating machine oil or the refrigerating machine composition according to the present embodiment is used by filling the inside of the refrigerating machine.
  • the refrigerator is a compressor, a condenser, an expansion mechanism (such as an expansion valve) and an evaporator, or a refrigeration cycle having a configuration in which a compressor, a condenser, an expansion mechanism, a dryer and an evaporator are essential.
  • the refrigerating machine oil is used for lubricating a sliding portion provided in, for example, a compressor.
  • the sliding part of the refrigerator is preferably between metal and metal, and examples of the metal of the sliding part include iron and steel materials.
  • the refrigerating machine oil of the present embodiment can reduce the friction coefficient while improving the wear resistance between iron and steel materials.
  • the refrigerating machine oil and the refrigerating machine composition more specifically include various refrigerators such as a car air conditioner, a gas heat pump (GHP), an air conditioner, a refrigerator, a vending machine, a showcase, a water heater, and a floor heater. It can be used in systems, hot water supply systems, and heating systems.
  • the manufacturing method of the refrigerating machine oil which concerns on one Embodiment of this invention manufactures refrigerating machine oil by mix
  • the base oil, the polyphosphate ester compound, the organic carboxylic acid metal salt, and the various additives are the same as described above, and thus the description thereof is omitted.
  • the properties of the base oil, the characteristics of the refrigerator oil and the composition for the refrigerator were determined according to the following procedure.
  • the base oil and additives are as follows.
  • PAG Polyoxypropylene glycol (100 ° C.
  • ECP Polypropylene glycol (PPG) / polyethyl vinyl ether (PEV) copolymer (PPG / PEV molar ratio 5/5, 100 ° C.
  • PPG / PEV molar ratio 5/5 100 ° C.
  • POE pentaerythritol octanoic acid (C8 acid) nonanoic acid (C9 acid) ester (C8 acid / C9 acid molar ratio 1 / 1.1, 100 ° C.
  • Polyphosphate ester compound 1 Compound in which n is a mixture of 1 to 3 in the above general formula (5)
  • Polyphosphate ester compound 2 Compound in which n is a mixture of 1 to 8 in the above general formula (5)
  • Polyphosphate ester compound 3 Compound represented by the above general formula (6)
  • Polyphosphate ester compound 4 Compound represented by the above general formula (1), wherein R 1 , R 3 , R 5 , R 7 is a hydrogen atom, R 2 , R 4 , R 6 and R 8 are alkyl groups having 1 to 20 carbon atoms, R 9 is a divalent hydrocarbon group having 2 to 20 carbon atoms, and n is 1 to 8 A compound that is a mixture.
  • Diluted organic carboxylic acid metal salt Dipropylene glycol diluted with potassium oleate (dilution ratio: 30 times, potassium concentration in the diluted solution: 4000 ppm)
  • Antioxidant 2,6-di-tert-butyl-4-methylphenol (DBPC)
  • Acid scavenger 2-ethylhexyl glycidyl ether
  • antifoaming agent silicone-based antifoaming agent
  • the friction coefficient in the sliding portion of the refrigerator is obtained by including both the polyphosphate ester compound and the organic carboxylic acid metal salt in the refrigerator oil. Can be lowered. Further, as is clear from the fact that the ring wear amount is small, the wear resistance is also good. On the other hand, as shown in Comparative Examples 1 to 14, when the refrigerator oil does not contain either one or both of the polyphosphate ester compound and the organic carboxylic acid metal salt, the wear resistance and the friction coefficient Both could not be made good.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)

Abstract

L'invention concerne une huile de réfrigération comprenant : une huile de base qui contient un composé organique oxygéné ; un composé à base d'ester de polyphosphate ; et un sel métallique d'un acide carboxylique organique ayant de 6 à 60 atomes de carbone.
PCT/JP2017/001045 2016-01-15 2017-01-13 Huile incongelable, et composition pour utilisation dans une machine frigorifique WO2017122788A1 (fr)

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KR1020187019686A KR20180101384A (ko) 2016-01-15 2017-01-13 냉동기유, 및 냉동기용 조성물
US16/063,872 US20190002792A1 (en) 2016-01-15 2017-01-13 Refrigeration oil, and composition for use in refrigerating machine
CN201780006501.2A CN108431190A (zh) 2016-01-15 2017-01-13 冷冻机油、和冷冻机用组合物

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001003072A (ja) * 1999-06-21 2001-01-09 Idemitsu Kosan Co Ltd 二酸化炭素冷媒用冷凍機油組成物
WO2011118708A1 (fr) * 2010-03-26 2011-09-29 株式会社Adeka Additif pour lubrifiant et composition lubrifiante le contenant
JP2012107108A (ja) * 2010-11-17 2012-06-07 Adeka Corp 摩耗防止剤組成物及び該摩耗防止剤組成物を含有する潤滑油組成物

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Publication number Priority date Publication date Assignee Title
JP2911629B2 (ja) 1991-03-29 1999-06-23 出光興産株式会社 冷凍機油組成物
JP3173684B2 (ja) 1992-06-04 2001-06-04 出光興産株式会社 圧縮型冷凍機用潤滑油
JP2859253B2 (ja) 1997-12-08 1999-02-17 出光興産株式会社 フッ化アルカン冷媒用冷凍機油
WO2008041549A1 (fr) 2006-09-29 2008-04-10 Idemitsu Kosan Co., Ltd. Lubrifiant pour machine réfrigérant à compression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001003072A (ja) * 1999-06-21 2001-01-09 Idemitsu Kosan Co Ltd 二酸化炭素冷媒用冷凍機油組成物
WO2011118708A1 (fr) * 2010-03-26 2011-09-29 株式会社Adeka Additif pour lubrifiant et composition lubrifiante le contenant
JP2012107108A (ja) * 2010-11-17 2012-06-07 Adeka Corp 摩耗防止剤組成物及び該摩耗防止剤組成物を含有する潤滑油組成物

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