WO2001048127A1 - Composition lubrifiante pour refrigerant a base de dioxyde de carbone utilisee dans une machine frigorifique - Google Patents
Composition lubrifiante pour refrigerant a base de dioxyde de carbone utilisee dans une machine frigorifique Download PDFInfo
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- WO2001048127A1 WO2001048127A1 PCT/JP2000/009228 JP0009228W WO0148127A1 WO 2001048127 A1 WO2001048127 A1 WO 2001048127A1 JP 0009228 W JP0009228 W JP 0009228W WO 0148127 A1 WO0148127 A1 WO 0148127A1
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- acid
- oil composition
- carbon atoms
- carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/008—Lubricant compositions compatible with refrigerants
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
- C10M111/02—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a non-macromolecular organic compound
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- 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
- C10M105/18—Ethers, e.g. epoxides
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- 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
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/48—Esters of carbonic acid
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
- C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
- C10M107/34—Polyoxyalkylenes
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- C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
- C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
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- 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
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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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- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/0406—Ethers; Acetals; Ortho-esters; Ortho-carbonates used as base material
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- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
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- C10M2207/286—Esters of polymerised unsaturated acids
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- C10M2207/30—Complex esters, i.e. compounds containing at leasst three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compounds: monohydroxyl compounds, polyhydroxy xompounds, monocarboxylic acids, polycarboxylic acids or hydroxy carboxylic acids
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- C10M2207/302—Complex esters, i.e. compounds containing at leasst three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compounds: monohydroxyl compounds, polyhydroxy xompounds, monocarboxylic acids, polycarboxylic acids or hydroxy carboxylic acids derived from the combination of monocarboxylic acids, dicarboxylic acids and dihydroxy compounds only and having no free hydroxy or carboxyl groups
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- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
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Definitions
- the present invention carbon dioxide (C 0 2) refrigerator oil compositions using refrigerant, particularly, compression type refrigerator using carbon dioxide refrigerant, in particular Ca - air conditioners, refrigerators, freezers, air conditioners, heat -
- the present invention relates to a refrigerating machine oil composition that can be used for freezing and cooling / heating equipment such as a pump.
- a compression refrigeration cycle of a refrigerator for example, a compression type refrigerator including a compressor, a condenser, an expansion valve, and an evaporator, has a structure in which a liquid mixture of a refrigerant and lubricating oil circulates in this closed system.
- a conventional chlorofluorocarbon such as dichlorodifluoromethane (R-12) or chlorodifluoromethane (R-22) has been used as a refrigerant.
- R-12 dichlorodifluoromethane
- R-22 chlorodifluoromethane
- a number of lubricating oils have been produced and used together with them.
- carbon dioxide is harmless to the environment, is excellent in terms of human safety, and is easily available everywhere- It has the advantage that it is unnecessary to recover and is very inexpensive. It has been conventionally used as a refrigerant for refrigerators and the like.
- the carbon dioxide refrigerant has a higher working pressure and temperature than systems using R-134a, etc., and is a trans-supercritical cycle in which the refrigerant cycle has a supercritical state.
- lubrication may be inferior, such as inadequate wear resistance, or new lubrication problems may occur, such as poor stability and the inability to use for a long period of time. Extremely high.
- Polyoxyalkylene glycol has been suitably used in the R-134a refrigerant system, and it is considered that it can be used in a carbon dioxide refrigerant system, but its compatibility with carbon dioxide is not necessarily sufficient. I could't say.
- the present invention has been made in view of the above, and in a refrigeration cycle using a high-temperature, high-pressure carbon dioxide-based refrigerant in a supercritical state, the refrigeration cycle has excellent wear resistance and lubrication performance.
- An object of the present invention is to provide a refrigerating machine oil composition which can improve the compatibility of refrigeration oil and can be used stably for a long period of time.
- Natural refrigerant for refrigerating machine oil composition of the present invention have the following features 0,
- FIG. 1 is a flow chart showing an example of a “compressor-condenser-expansion valve-evaporator” compression refrigeration cycle having an oil separator and a hot gas line.
- FIG. 2 is a flow chart showing an example of a compression type refrigeration cycle of “compressor-condenser-expansion valve-evaporator” having an oil separator.
- FIG. 3 is a flowchart showing an example of a “compressor-condenser-expansion valve-evaporator” compression refrigeration cycle having a hot gas line.
- FIG. 4 is a flowchart showing an example of a compression refrigeration cycle of “compressor-condenser-expansion valve-evaporator”.
- the polyoxyalkylene glycol (A) used in the present invention includes, for example, a compound represented by the general formula (1)
- R 1 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an acyl group having 2 to 10 carbon atoms, or an aliphatic hydrocarbon group having 1 to 10 carbon atoms having 2 to 6 bonding portions
- R 2 is an alkylene group having 2 to 4 carbon atoms
- R 3 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or an acyl group having 2 to 10 carbon atoms
- n is an integer of 1 to 6
- m is m
- Xn is a number such that the average value is 6 to 80.
- the alkyl group for R 1 and R 3 may be any of linear, branched or cyclic.
- Specific examples of the alkyl group 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, and various nonyl groups.
- Various decyl groups, cyclopentyl groups, and hexyl groups If the carbon number of the alkyl group exceeds 10, the compatibility with the refrigerant may be reduced, and phase separation may occur.
- Preferred alkyl groups have 1 to 6 carbon atoms.
- the alkyl group portion of the acyl group in R 1 and R 3 may be linear, branched, or cyclic. Specific examples of the alkyl group portion of the acyl group include various groups having 1 to 9 carbon atoms mentioned as specific examples of the alkyl group. If the number of carbon atoms of the acyl group exceeds 10, the compatibility with the refrigerant may be reduced and phase separation may occur. Preferred acyl groups have 2 to 6 carbon atoms. When R 1 and R 3 are both an alkyl group or an acyl group, R 1 and R 3 may be the same or different.
- n 2 or more
- a plurality of R 3 in one molecule may be the same or different.
- R 1 is an aliphatic hydrocarbon group having 1 to 10 carbon atoms having 2 to 6 bonding sites
- the aliphatic hydrocarbon group may be a chain or a cyclic one. You may.
- Examples of the aliphatic hydrocarbon group having two bonding sites include 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 and a cyclopentylene group. And cyclohexylene groups.
- Examples of the aliphatic hydrocarbon group having 3 to 6 binding sites include trimethylolpropane, glycerin, pentaerythritol, sorbitol; 1, 2, 3—trihydroxycyclohexane; 1, 3, 5 Examples thereof include residues obtained by removing hydroxyl groups from polyhydric alcohols such as trihydroxycyclohexane.
- the number of carbon atoms in the aliphatic hydrocarbon group exceeds 10, the compatibility with the refrigerant is reduced, and phase separation may occur. Preferred carbon numbers are 2-6.
- R 1 and R 3 are preferably an alkyl group, particularly an alkyl group having 1 to 3 carbon atoms, and particularly preferably a methyl group from the viewpoint of viscosity characteristics. Further, for the same reason as described above, it is preferable that both R 1 and R 3 are an alkyl group, particularly a methyl group.
- R 2 in the general formula (1) is an alkylene group having 2 to 4 carbon atoms.
- 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 may contain two or more oxyalkylene groups.
- a copolymer containing an oxyethylene group (EO) and an oxypropylene group (PO) is preferable.
- the value of E OZ (PO + EO) is preferably in the range of 0.1 to 0.8 in terms of seizure load and viscosity characteristics, and E 0 / (P 0 + Preferably, the value of E 0) is in the range of 0.3 to 0.6.
- N in the general formula (1) is an integer of 1 to 6, and is determined according to the number of binding sites of R 1 .
- n is 1, and when R 1 is an aliphatic hydrocarbon group having 2, 3, 4, 5, and 6 binding sites, n is 2, 3, 4, 5, and 6.
- m is a number such that the average value of mxn is 6 to 80. If the average value of mxn is out of the above range, the object of the present invention cannot be sufficiently achieved.
- the polyalkylene glycol represented by the general formula (1) includes a polyalkylene glycol having a hydroxyl group at a terminal, and the content of the hydroxyl group is 50 mol based on all terminal groups. %, It can be suitably used even if it is contained. If the content of the hydroxyl group exceeds 5 Qmol%, the hygroscopicity increases, and the viscosity index decreases, which is not preferable.
- a and b each represent 1 or more, and the total thereof is 6 to 80.
- Polyoxyethylene polyoxypropylene glycodimer represented by Til ether is preferred in terms of economy and effect, and the general formula (4)
- Polyoxypropylene glycol monobutyl ether represented by the following formula, and polyoxypropylene glycol diacetate are preferred in terms of economy and the like.
- polyalkylene recall represented by the general formula (1) any of the polyalkylene recalls described in detail in Japanese Patent Application Laid-Open No. 2-358093 can be used.
- the polyoxyalkylene glycol has a general formula (5)
- R 4 to R 7 are each hydrogen, a monovalent hydrocarbon group having 1 to 10 carbon atoms, or a general formula (6)
- R 8 and R 9 each represent hydrogen, a monovalent hydrocarbon group having 1 to 10 carbon atoms or an alkoxyalkyl group having 2 to 20 carbon atoms, and R 1 represents a carbon number.
- An integer of 0 to 20 and R 11 represents a monovalent hydrocarbon having 1 to 10 carbon atoms.
- R 4 to R 7 is a group represented by the general formula (6). is there ⁇
- R 4 to R 7 are each hydrogen, a monovalent hydrocarbon group having 1 to 10 carbon atoms, or a group represented by the above general formula (6).
- the monovalent hydrocarbon group a monovalent hydrocarbon group having 6 or less carbon atoms can be preferably used. In particular, an alkyl group having 3 or less carbon atoms is most suitable.
- R 8 and R s are These represent hydrogen, a monovalent hydrocarbon group having 1 to 10 carbon atoms or an alkoxyalkyl group having 2 to 20 carbon atoms, respectively. Among them, an alkyl group having 3 or less carbon atoms or an alkoxyalkyl group having 6 or less carbon atoms is shown. Groups are preferred.
- R 1 Q 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 substituted alkylene group having 4 to 10 carbon atoms having an alkoxyalkyl group as a substituent.
- the group is preferably an ethylene group having 6 or less carbon atoms or a substituted ethylene group.
- R 11 is a monovalent hydrocarbon group of 0 1 1 carbon atoms, preferably carbon number 6 or less hydrocarbon groups Among these, preferred especially is a hydrocarbon group having 3 or less carbon atoms.
- R 4 to R 7 in the aforementioned general formula (5) is a group represented by the general formula (6).
- one of R 4 and R 8 is a group of the general formula (6), and the other one of R 4 and R 8 and R 5 and R 7 are each hydrogen or carbon 1 to 10 It is preferably a valent hydrocarbon group.
- the polyoxyalkylene glycol derivative contains at least one structural unit represented by the general formula (5). More specifically, the polyoxyalkylene glycol derivative comprises a single polymer composed of the structural unit represented by the general formula (5). A copolymer comprising two or more different structural units contained in the general formula (5); The structural unit of the formula (5) and other structural units, for example, the general formula (7)
- R 12 to R 15 each represent hydrogen or an alkyl group having 1 to 3 carbon atoms.
- Preferred examples of the homopolymer include 1 to 200 structural units A represented by the general formula (5), and each of the terminal groups has a hydroxyl group, an alkoxy group having 1 to 10 carbon atoms, And those having from 10 to 10 alkoxy groups or aryloxy groups.
- preferred examples of the copolymer include two or more structural units A and B represented by general formula (5), each having 1 to 200 units, or a structural unit represented by general formula (5). It has 1 to 200 A and 1 to 200 structural units C represented by the general formula (6), and has a hydroxyl group, an alkoxy group having 1 to 10 carbon atoms, and a carbon atom having 1 to 10 terminal groups, respectively. And those comprising up to 10 alkoxy or aryloxy groups.
- copolymers are obtained by alternating polymerization of Structural Unit A and Structural Unit B (or Structural Unit C), random copolymerization, a block copolymer or a graph in which Structural Unit B is bonded to the main chain of Structural Unit A
- Structural Unit B or Structural Unit C
- Block copolymer or a graph in which Structural Unit B is bonded to the main chain of Structural Unit A
- copolymers are obtained by alternating polymerization of Structural Unit A and Structural Unit B (or Structural Unit C), random copolymerization, a block copolymer or a graph in which Structural Unit B is bonded to the main chain of Structural Unit A
- copolymers are obtained by alternating polymerization of Structural Unit A and Structural Unit B (or Structural Unit C), random copolymerization, a block copolymer or a
- carbonyl carbonate derivative (B) a carbonate oil represented by the following general formula (8), (9), (10) or (11) can be used.
- R 16 and R 17 are each independently a linear or branched hydrocarbon group having 1 to 30 carbon atoms, or a hydrocarbon group containing an aromatic ring or an alicyclic bond, or A straight-chain or branched hydrocarbon group having an ether bond having 2 to 135 carbon atoms, or a hydrocarbon group containing an aromatic ring or an alicyclic bond.
- R 18 and R 2 ° each independently represent a linear or branched hydrocarbon group having 1 to 30 carbon atoms, or a hydrocarbon containing an aromatic ring or an alicyclic bond.
- A is a linear or branched divalent hydrocarbon group having a number of 1 to 12 or a divalent hydrocarbon group containing an aromatic or alicyclic bond, and a is an integer of 1 to 16.
- R 21 and R 23 each independently represent a linear or branched hydrocarbon group having 1 to 30 carbon atoms, or a hydrocarbon group containing an aromatic or alicyclic bond. , or a linear or branched hydrocarbon group having an ether bond of carbon atoms 2-1 3 5 or aromatic ring properly, is a hydrocarbon group containing an alicyclic bond.
- R 22 is the number of carbon atoms An alkylene group of 1 to 6, X is an integer of 1 to 40, and y is an integer of 1 to 12.) 0
- R 24 , R 25 and R 2S are each independently an alkylene group having 1 to 6 carbon atoms
- R 27 , R 28 and R 2e are each independently an alkylene group having 1 to 3 carbon atoms.
- the linear or branched hydrocarbon group represented by Rie may be a linear or branched carbon number of 1 to 30, preferably 1 to 12 carbon atoms. And the like. Is a specific thing, CH 3 group, C 2 H 6 group, C 3 H 7 group, C 4 H 9 group, C 5 Hn group C beta H l3 group ⁇ H l5 group ⁇ 8 "1 7 group , C 9 H lS group ⁇ C 1 0 H 2 l 3 ⁇ 4, C 12 H such as 25 groups linear also is properly raised and branched alkyl groups o
- examples of the hydrocarbon group containing an aromatic ring represented by R 16 include an aryl group; an arylalkyl group; and an aromatic group containing a divalent aromatic hydrocarbon group in the chain.
- examples thereof include hydrocarbon groups having 6 to 30 carbon atoms, preferably 6 to 20 carbon atoms, such as hydrocarbon groups.
- Be specific Aromatic groups containing a divalent aromatic hydrocarbon group such as a aryl group such as a phenyl group; an arylalkyl group such as a benzyl group; a diphenylene group (—C 8 H 4 —).
- a hydrocarbon group such as a aryl group such as a phenyl group; an arylalkyl group such as a benzyl group; a diphenylene group (—C 8 H 4 —).
- examples of the hydrocarbon group containing an alicyclic bond represented by R 18 include a cycloalkyl group; a cycloalkyl-substituted alkyl group; and a divalent alicyclic hydrocarbon group.
- examples thereof include hydrocarbon groups having 6 to 30 carbon atoms, preferably 6 to 20 carbon atoms, such as alicyclic hydrocarbon groups contained in the chain.
- Specific examples include a cycloalkyl group such as a cyclohexyl group; an alkyl group substituted by a cycloalkyl group such as a cyclohexyl group; a divalent group such as a cyclohexylene group (1-C 6 H 10- ).
- Alicyclic hydrocarbon group containing the above alicyclic hydrocarbon group in the chain include a cycloalkyl group; a cycloalkyl-substituted alkyl group; and a divalent alicyclic hydrocarbon group.
- these groups include CH 3 (OC 2 H 4 ) —, CH 3 (0 C 2 H 4 ) z , CH 3 (OC 2 H,) 3— , 2 H 5 (0 C 2 H 4 ) — group, C 2 H 5 (0 C 2 H 4 ) 2 -group, C 2 H 5 (0 C 2 H,) 3 — group, C 3 H 7 (0 C 2 H 4 ) —, C 3 H 7 (0 C 2 H 4 ) 2 , C 3 H 7 (OC 2 H 4) 3 —, C 4 H 9 (0 C 2 H 4 ) —, C 4 H 8 (0 C 2 H 4 ) 2 — group, C 4 H 9 (0 C 2 H 4 ) 3 — group, C 6 H 13 (0 C z H 4 ) — group, C 6 H 13 (0 group C z H 4 ) 2 — group, C 6 H 13 (0 C 2 H 4) 3 group, CH 3 (OC 3 H 6 ) — group, CH 3 (OC 3 H 6 ) 2 — group, CH 3 (OC 3 H 6
- the hydrocarbon group containing an aromatic ring having an ether bond represented by R 16 has a carbon number of 7 to 135, preferably 7 to 30 carbon atoms containing an ether bond and an aromatic ring. It is a hydrocarbon group.
- the ether bond may be bonded to an aromatic ring or may be bonded to a group other than the aromatic ring, but is preferably bonded to an aromatic ring.
- the hydrocarbon group containing an alicyclic bond having an ether bond represented by R 18 is preferably 7 to 135 carbon atoms containing an ether bond and an alicyclic bond, and more preferably? ⁇ 30 groups.
- the ether bond and the alicyclic bond may be linked continuously or may not be linked, but are preferably linked continuously.
- the number of carbon atoms is 7 to 135, preferably? To 30 alicyclic hydrocarbon groups.
- R 17 is the same as R 18 .
- R 16 and R 17 may be the same or different.
- Examples of the carbonate oil represented by the general formula (8) include a monocarbonate oil in which a combination of R 16 and R 17 is selected from the hydrocarbon groups.
- Monocarbonate oil represented by the general formula (8) May be used alone or as a mixture of two or more.
- the linear or branched hydrocarbon group represented by R 18 a linear or branched hydrocarbon group having 1 to 30 carbon atoms, preferably 1 to 12 carbon atoms. And an alkyl group. It is a specific thing, CH 3 group, C 2 H 5 group, C 3 H 7 group, C 4 H 9 group, C 5 H n groups, C 6 H 1 3 group, C 7 H 1 5 group , C 8 H 1 7 group, C S H 1 9 group, CH group, C 1 2 H 2 such as 5 group linear be properly is Ru mentioned include branched alkyl groups.
- hydrocarbon group containing an aromatic ring represented by R 1 8 in the general formula (9) Ariru group; aromatic system containing divalent aromatic hydrocarbon group in the chain; ⁇ Li one Ruarukiru group Examples thereof include hydrocarbon groups having 6 to 30 carbon atoms, preferably 6 to 20 carbon atoms, such as hydrocarbon groups. Specific examples include an aryl group such as a phenyl group; an arylalkyl group such as a benzyl group; and a divalent aromatic hydrocarbon group such as a phenylene group (—C 6 H 4 ⁇ ). And an aromatic hydrocarbon group containing in the chain.
- examples of the hydrocarbon group containing an alicyclic bond represented by R 18 include a cycloalkyl group; a cycloalkyl-substituted alkyl group; and a divalent alicyclic hydrocarbon group.
- examples thereof include a hydrocarbon group having 6 to 30 carbon atoms, preferably 6 to 20 carbon atoms, such as an alicyclic hydrocarbon group contained in the chain.
- a cycloalkyl group such as a cyclohexyl group
- an alkyl group substituted with a cycloalkyl group such as a cyclohexyl group
- a cyclohexylene group (—C 6 H 10 ⁇ )
- alicyclic hydrocarbon groups containing a monovalent alicyclic hydrocarbon group in the chain include a cycloalkyl group such as a cyclohexyl group; an alkyl group substituted with a cycloalkyl group such as a cyclohexyl group; a cyclohexylene group (—C 6 H 10 ⁇ );
- alicyclic hydrocarbon groups containing a monovalent alicyclic hydrocarbon group in the chain such as a cyclohexyl group
- an alkyl group substituted with a cycloalkyl group such as a cyclohexyl group
- a cyclohexylene group —C 6
- these groups include a CH 3 (OC 2 H 4 ) — group, a CH (0 CH 4 ) 2 — group, a CH 3 (OC 2 H 4 ) — group, and a C 2 H 5 ( OC 2 H 4 ) — group, C 2 H (0 CH — group, C 2 H (0 CH 4 ) 3 — group, C 3 H (0 C 2 H 4 ) — group, C 3 H (0 CH 4 ) —Group, C 3 H 7 (0 C 2 H —group, C 4 H (0 CH 4 ) —group, C 4 H 9 (0 CH 4 ) 2 —group, CH (0 CH 4 ) 3 —group, C 6 H 13 ( ⁇ _C 2 H 4) - groups, C 6 H, 3 ( ⁇ CH 4) 2 - group, C 6 H l 3 ( ⁇ _C 2 H 4) - groups, CH 3 ( ⁇ _C 3 H 6 ) — Group, one CH 3 (OC 3 H 6 ) 2 group, CH 3 (OC 3 H 6 ) 3 — group, CH
- the ether bond may be bonded to an aromatic ring or to a group other than the aromatic ring, but is preferably bonded to an aromatic ring.
- Aromatic hydrocarbon having 7 to 135, preferably 7 to 30 carbon atoms represented by Element groups and the like.
- the hydrocarbon group containing an alicyclic bond having an ether bond represented by R 18 is a carbon group containing an ether bond and an alicyclic bond, having 7 to 135, preferably 7 carbon atoms. ⁇ 30 groups.
- the ether bond and the alicyclic bond may or may not be continuous, but are preferably continuous.
- R 18 in the general formula (9), linear is also properly arbitrarily preferred are branched alicyclic aliphatic hydrocarbon radicals having an ether bond.
- R 2 ° is the same group as R 18 .
- R 2 Q and R ′ 8 may be the same or different.
- off two alkylene groups (one C 6 H 4 -) divalent aromatic carbon hydride such as Examples thereof include a divalent aromatic hydrocarbon group having 6 to 12 carbon atoms, preferably 6 to 10 carbon atoms, which contains the group in the chain. Of these, an alkylene group is preferred.
- Divalent containing an alicyclic bond represented by R '9 in the general formula (9) examples include a divalent alicyclic hydrocarbon group such as a cyclohexylene group (—C 6 H 10 ⁇ ) or a C 6 to C 12, preferably 6 to 10 carbon atom containing carbon atom in the chain. And cyclic hydrocarbon groups.
- an alkylene group is preferable.
- a is 1 to: 16, preferably 1 to 12.
- Examples of the carbonate oil represented by the general formula (9) include polycarbonates in which the combination of R 18 to R 2 ° is selected from the hydrocarbon groups.
- the polycarbonate oil represented by the general formula (9) may be used singly, or may be a mixture of two or more.
- R 21 to R 23 in the general formula (10) are exemplified by the same groups as R 18 to R 2e in the general formula (9).
- X is 1 to 40, preferably 1 to 25, and y is 1 to 12, preferably 1 to 10.
- Y is 1 to 12, preferably 1 to 10.
- poly force one Bonnet one Bok the combination of R 21 to R 23 are selected from among the hydrocarbon group.
- the polycarbonate oil represented by the general formula (10) may be used alone or as a mixture of two or more.
- the alkylene group of R 24 , R 25 and R 2e in the general formula (11) includes -C 2 H 4 —, -C 3 H s-, -C 4 H 8-, -CH 2 C (CH 3 ) H then H 2 —, — CH 2 ⁇ H 2 C (CH a) n H 2 then H 2 — ⁇ — then 6 H 12 1, — CH 2 C ((CH 3 ) 2 ) CH 2 —
- a chain or branched alkylene group having 1 to 6, preferably 2 to 4 carbon atoms is exemplified.
- R 24 , R 25 and R 26 may be the same or different.
- R 27 , R 28 and R 29 in the general formula (11) are each represented by the general formula The same group as R 18 in (9) is exemplified.
- R 27 , R 28 and R 29 may be the same or different.
- p is 0 to 12, preferably 1 to 10, and Q is 1 to 6, preferably 1 to 4.
- the structural units may be the same or different.
- Examples of the carbonic acid oil represented by the general formula (11) include polycarbonates in which the combination of R 2 to R 2S is selected from the above hydrocarbon groups.
- the polycarbonate oil represented by the general formula (11) may be used alone, or may be a mixture of two or more kinds.
- the carbonic acid oils represented by the general formulas (8) to (11) can be used alone or in combination of two or more. Can also.
- the carbonate compounds represented by the general formulas (8), (9), (10) and (11) used in the present invention can be produced, for example, by the following method. That is, the transesterification reaction between the alcoholic compound represented by the following general formula (12), (13), (14) or (15) and the sodium carbonate represented by the following general formula (16) is carried out. As a result, corresponding carbonate compounds represented by the aforementioned general formulas (8), (9), (10) and (11) are obtained. R 16 (or R 17 ) —OH (12)
- R 18 , R 17 R 18 R 22 R 24 R 25 R 26 x, p and q are the same as those in the general formulas (8) and (11).
- R 3 ° each independently represents a linear or branched hydrocarbon group having 1 to 30 carbon atoms, or a hydrocarbon group containing an aromatic or alicyclic bond, Alternatively, it is a linear or branched hydrocarbon group having an ether bond having 2 to 135 carbon atoms, or a hydrocarbon group containing an aromatic or alicyclic bond.
- the alcoholic compound represented by the general formula (12), (13), (14) or (15) is combined with the carbonic acid compound represented by the general formula (16) by carbonation. in an amount that the molar ratio represented by preparative compound alcoholic compound is in the range from 3 2 0 0, performed with heating in the presence of a base catalyst, is removed from the reaction system by distillation of the alcohol R 22 OH to produce The reaction rate is increased to 95% or more.
- the unreacted carbonate compound (16) is removed from the reaction system by distillation, and represented by the general formula (8), (9), (10) or (11). Can be obtained.
- the base catalyst a known base angle used in the transesterification reaction A medium can be used and is not particularly limited, but Na OCH 3 or the like is a typical base catalyst.
- polyol ester (C) an ester of an aliphatic polyhydric alcohol and a linear or branched fatty acid can be used.
- Aliphatic polyhydric alcohols forming the ester include ethylene glycol, propylene glycol, butylene glycol, neopentyl diolicol, trimethylol monolethane, ditrimethylolluethane, trimethylolpropane, dimethylolpropane, dimethylolpropane and dimethylolpropane.
- Trimethylolpropane, glycerin, pentaerythritol, dipentaerythritol, tripentaerythritol, sorbitol and the like can be mentioned.
- fatty acids those having 3 to 12 carbon atoms can be used.
- Preferred fatty acids are propionic acid, butyric acid, pivalic acid, valeric acid, cabulonic acid, heptanoic acid, octanoic acid, and nonane acid.
- Acid decanoic acid, dodecanoic acid, isovaleric acid, neopentanoic acid, 2-methylbutyric acid, 2-ethylbutyric acid, 2-methylhexanoic acid, 2-ethylhexanoic acid, isooctanoic acid, isononanoic acid, isodecanoic acid, 2 , 2-dimethyloctanoic acid, 2-butyloctanoic acid, 3,5,5-trimethylhexanoic acid.
- a partial ester of an aliphatic polyhydric alcohol and a linear or branched fatty acid can also be used.
- esters of these aliphatic polyhydric alcohols and linear or branched fatty acids particularly preferred are pentaerythritol, dipentaerythritol, and tripentaerythritol with 5 to 12 carbon atoms, more preferably.
- a fatty acid having 5 to 9 carbon atoms such as valeric acid, hexanoic acid, heptanoic acid, 2-methylhexanoic acid, 2-ethylhexanoic acid, isooctanoic acid, isononanoic acid, isodecanoic acid, 2,2-dimethyl
- esters with octanoic acid, 2-butyloctanoic acid, 3,5,5-trimethylhexanoic acid, and the like use a complex ester of a partial ester of an aliphatic polyhydric alcohol and a linear or branched fatty acid having 3 to 9 carbon atoms with an aliphatic dibasic acid or an aromatic dibasic acid.
- a fatty acid having 5 to 7 carbon atoms is preferably used.
- fatty acids valeric acid, hexanoic acid, isovaleric acid, 2-methylbutyric acid, 2-ethylbutyric acid or a mixture thereof is used.
- Fatty acids mixed in a ratio of 0: 90 to 90: 10 can be suitably used.
- Aliphatic dibasic acids used for esterification with polyhydric alcohols together with this fatty acid include succinic acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, and pentacanedioic acid.
- Dodecandioic acid, tridecandioic acid, docosannanic acid, and phthalic acid and isophthalic acid as aromatic dibasic acids.
- esterification reaction for preparing the complex ester first, a polyhydric alcohol and a dibasic acid are reacted at a predetermined ratio to partially esterify, and then the partial ester may be reacted with a fatty acid.
- the reaction order of the basic acid and the fatty acid may be reversed, or the diacid and the fatty acid may be mixed and subjected to esterification.
- R 3 1 to R 3 3 is an alkyl group having a carbon number of 1-1 3, have one or more branches all those having 4 or more carbon atoms, the sum of carbon atoms in R 3 'to R 8 3 The number is 3 to 23.
- a polyhydric alcohol ester obtained by reacting an acid full-length ride represented by the following formula with a polyhydric alcohol can also be suitably used because of its low saturated moisture absorption. -1 5 7 2 1 9).
- Each of the polyoxyalkylene glycol (A), the carbonyl carbonate derivative (B) and the polyol ester (C) used in the present invention has a kinematic viscosity at 100 ° C. of 3 to 50 mm 2 Z. s, and preferably 5 to 40 mm 2 / s. If the kinematic viscosity at 100 ° C. is less than 3 mm 2 , lubricity may not be sufficiently ensured. If the kinematic viscosity exceeds 50 mm 2 s, the practicability of refrigeration system motion is impaired due to power loss.
- the compounding amount of the carbonyl carbonate derivative (B) and Z or the polyol ester (C) with respect to the polyoxyalkylene glycol (A) is 0.1 to 40% by weight as the content in the base oil composition. It is necessary that the content be 5 to 40% by weight. If the amount is less than 0.1% by weight, the effect of improving solubility in carbon dioxide refrigerant will be dilute, and if it exceeds 40% by weight, the viscosity index of the refrigerating machine oil composition will be insufficient.
- the base oil composition preferably has a kinematic viscosity at 100 ° C. of 7 to 30 mm 2 Zs and a viscosity index of 130 or more.
- a kinematic viscosity at 100 ° C. of 7 to 30 mm 2 Zs and a viscosity index of 130 or more.
- 1 0 0 ° kinematic viscosity is less than 7 mm 2 Zs in C, high temperature, not satisfy the lubricity of carbon dioxide under high pressure, 3 0 mm 2 Z s and not suitable large power loss exceeds.
- the viscosity index is less than 130, the kinematic viscosity substantially decreases at a high temperature, so that the lubricating property is reduced and the sealing resistance is not sufficient.
- the refrigerating machine oil composition for carbon dioxide refrigerant of the present invention is characterized in that a base oil is a composition comprising polyoxyalkylene glycol and a carbonyl carbonate derivative (B) and Z or a polyol ester (C).
- a base oil is a composition comprising polyoxyalkylene glycol and a carbonyl carbonate derivative (B) and Z or a polyol ester (C).
- an extreme pressure agent, an acid scavenger, an antioxidant, a corrosion inhibitor, etc. are added.
- the extreme pressure agent is not particularly limited, and any one of conventionally known ones is appropriately selected and used. , But especially metal carboxylate And phosphorus-based extreme pressure agents are suitable.
- carboxylic acids constituting the carboxylic acid metal salt there are various types of carboxylic acids constituting the carboxylic acid metal salt, and examples thereof include aliphatic saturated monocarboxylic acids, aliphatic unsaturated carboxylic acids, aliphatic dicarboxylic acids, and aromatic carboxylic acids. More specifically, examples of the aliphatic saturated monocarboxylic acids include cabronic acid, caprylic acid, capric acid, lauric acid, myristic acid, panolemitic acid, stearinic acid, araquinic acid, serotinic acid, and raccel acid. Linear saturated acids such as acids
- the unsaturated carboxylic acids include, for example, lumitoleic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid and the like, and also 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 pyromethyl acid.
- alicyclic fatty acids such as naphthenic acid can be used.
- the above carboxylic acids may be used in combination of two or more.
- the metal constituting the metal carboxylate is not particularly limited, and various metals can be used.
- alkali metals such as lithium, calcium, and sodium
- alkaline earth metals such as magnesium, calcium, and strontium
- other metals such as zinc, nickel, and aluminum can be given.
- Preferred metals are the alkali metals and alkaline earth metals, especially the alkali metals.
- the number of metals combined per carboxylic acid is not limited to one, but may be two or more.
- Examples of the phosphorus-based extreme-pressure agent include phosphorus-based extreme-pressure agents such as phosphoric acid ester, acid phosphite, phosphite, acid phosphite, and amide salts thereof. Can be mentioned.
- Examples of the phosphoric acid ester include triaryl phosphate, trialkyl phosphate, trialkyl aryl phosphate, triaryl alkyl phosphate, and trialkyl phenyl phosphate.
- triphenyl phosphate for example, triphenyl phosphate, tricresyl phosphate, benzyl diphenyl phosphate, ethyl diphenyl phosphate, tributyl phosphate, ethyl dibutyl phosphate, cresyl diphenyl Phosphate, dimethyl phenyl phosphate, ethyl phenyl diphenyl phosphite, acetyl phenyl phenyl phosphite, propyl phenyl diphenyl phosphite, dipropyl phenyl Triphenyl phosphite, triethyl phenyl phosphate, trityl Propyl phenyl phosphate, butyl phenyl diphenyl phosphate, dibutyl phenyl phenyl phosphate, tributyl phenyl phosphate, trihexyl
- Examples of the acidic phosphoric acid ester include, for example, 2-ethylhexyl acid phosphate, ethyl acid phosphate, butyl acid phosphate, oleyl acid phosphate, tetracosyl acid phosphate, isodecyl acid phosphate, and the like.
- Examples include linoleic acid phosphate, tridecyl acid phosphate, stearyl acid phosphate, isostearyl acid phosphate and the like.
- phosphite examples include, for example, triethyl phosphite, tributyl phosphite, triphenyl phosphite, tricresyl phosphite, tri (nonylphenyl) phosphite, and triphenyl phosphite.
- (2-ethylhexyl) phosphite tridecyl phosphite, trilauryl phosphite, triisooctyl phosphite, diphenyl isodecyl phosphite, tristearyl phosphite, trioleyl phosphite And 2-ethylhexyldiphenyl phosphite.
- acid phosphite examples include, for example, dibutyl hydrogen phosphite, dilauryl hydrogen phosphite, diolyl hydrogen phosphite, distearyl hydrogen phosphite, and diphenylhydroxide. Genphosphite may be mentioned.
- R 3 4 is also properly alkenyl group an alkyl group from 3 3 0 carbon atoms, a hydroxycarboxylic alkyl group Ariru group if the Ararukiru group or C number 2-3 0 carbon number 6-3 0 shows, s is 1, 2 or 3. also, if R 3 4 there are a plurality, monosubstituted Amin where a plurality of R 3 4 represented by may be the same or different.), di-substituted Amin Or a tri-substituted amine.
- Alkenyl groups properly also ⁇ alkyl group having a carbon number of 3-3 0 of R 3 4 in the general formula (12) is a linear, branched, or cyclic dark one which may o
- examples of the mono-substituted amine include butylamine, pentylamine, hexylamine, cyclohexylamine, octylamine, radirilamine, stearylamine, oleylamine, and benzylamine.
- disubstituted amines examples include dibutylamine , Dipentylamine, dihexylamine, dicyclohexylamine, dioctylamine, dilaurylamine, distearylamine, zoleylamine, dibenzylamine, stearinole monoethanolanol Min, decyl 'monoethanolamine, hexyl' monopropanolamine, benzyl monoethanolamine, phenylmonoethanolamine, tril, monopropanol, etc. it can.
- trisubstituted amines examples include triptylamine, tripentylamine, trihexylamine, tricyclohexylamine, trioctynoleamine, trilaumin.
- tricresyl phosphate tri (nonylphenyl) phosphite, diolyl hydrogen phosphite, and 2-ethylhexyl dififate, from the viewpoint of extreme pressure properties and friction characteristics.
- Penilphosphite is preferred.
- the above-mentioned extreme pressure agent may be used alone or in combination of two or more.
- a metal carboxylate and a phosphorus-based extreme pressure agent are used in combination, the supercritical state of carbon dioxide This is preferable because it has an effect of further improving the lubricity of the refrigerating machine oil in a carbon atmosphere.
- the amount of the extreme pressure agent is preferably in the range of 0.0055.0% by weight based on the base oil composition. If this amount is less than 0.005% by weight, extreme pressure and friction characteristics If it exceeds 5.0% by weight, sludge generation may be promoted.
- the acid scavenger is prepared by, for example, using an epoxy compound such as vinylidicyl ether, alkyl glycidyl ether, alkylene glycol glycidyl ether, cyclohexene oxide, thiophene oxide, or epoxidized soybean oil.
- an epoxy compound such as vinylidicyl ether, alkyl glycidyl ether, alkylene glycol glycidyl ether, cyclohexene oxide, thiophene oxide, or epoxidized soybean oil.
- an epoxy compound such as vinylidicyl ether, alkyl glycidyl ether, alkylene glycol glycidyl ether, cyclohexene oxide, thiophene oxide, or epoxidized soybean oil.
- compatibility phenylglycidyl ether and alkylglycidyl ether
- Alkyleneglycolglycidyl ether, cyclohexenoxide and ⁇ -olefin oxide are preferred.
- the above acid scavenger may be used alone or in combination of two or more.
- the compounding amount is preferably in the range of 0.05 to 5.0% by weight based on the base oil composition. If the amount is less than 0.005% by weight, the effect of blending may not be exhibited, and if it exceeds 5.0% by weight, sludge may be generated.
- the total amount is preferably in the range of 0.05 to 5% by weight based on the base oil composition.
- the antioxidants are 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-butylethylphenol, 2,2'-methylenebis (4-methyl-6- Oxidation of phenolic compounds such as tert-butylphenyl), phenyl- ⁇ -naphthylamine, phenyl—; 3-naphthylamine, N, N, monodiphenyl-p-phenylenediamine, etc.
- phenolic antioxidants are preferred. When the above antioxidant is blended together with the extreme pressure agent and the acid scavenger, the stability of the refrigerating machine oil exposed to supercritical carbon dioxide is improved. It has the effect of further improving.
- oily agent examples include (X) etherified or esterified tri- to hexa-valent aliphatic polyhydric alcohols, and (y) bi-molecular condensates or tri- or hexa-valent aliphatic poly-alcohols. Preferred are etherified products and esterified products of molecular condensates.
- the (X) component and the (y) component will be described.
- the etherified product and the esterified product of the (X) component of the aliphatic polyhydric alcohol having 3 to 6 valences for example, those represented by the following general formulas (XV-a) to (XV-f) are preferable.
- R 47 to R 52 each represents a hydrogen atom or a linear or branched alkyl group, aryl group, aralkyl group or aryl group having 1 to 18 carbon atoms, and . may be different also, - (R a 0) x one R b (R a is an alkylene group having 2-6 carbon atoms, R b represents an alkyl group having 0 2 1 carbon atoms, Ariru group, Ararukiru group or And X represents an integer of 1 to 10.
- glycol ether residue represented by the following formula:
- Specific examples of the trihydric to hexahydric aliphatic polyhydric alcohol include glycerin, trimethylolpropane, erythritol, pentaerythritol, arabitol, sorbitol, mannitol, and the like.
- R 47 to R 52 are, for example, methyl group, ethyl group, n-propyl group, isopropyl group, various butyl groups, various pentyl groups, various hexyl groups Groups, various heptyl groups, various octyl groups, various nonyl groups, various decyl groups, various decyl groups, various dodecyl groups, various tridecyl groups, various tetradecyl groups, various pentadecyl groups, various hexadecyl groups, various heptyl groups Examples include decyl groups, various octadecyl groups, phenyl groups, benzyl groups, methoxy groups, ethoxy groups, and the like. Further, in the case of a hydrogen atom, that is, a partially etherified product is also included.
- etherified or esterified product of a bimolecular condensate or trimolecular condensate of a tri- to hexa-valent aliphatic polyhydric alcohol of the component (Y) for example, an alcohol corresponding to the general formula (XV-a)
- the etherified and esterified compounds are represented by the general formulas (XV-g) and (XV-h), and the etherified and esterified alcohols corresponding to the general formula (XV-d) are represented by the general formula (XV-i) And (XV—j).
- R 4 7 ⁇ R 5 4 are as defined above R 4 7 ⁇ R 5 2, they may be the same or different.
- di- and tri-molecular condensates of tri- to hexa-valent aliphatic polyhydric alcohols include diglycerin, ditrimethylolpropane, dibenzoyl erythritol, disorbitol, triglycerin, door Li Bok Li methylate Rorupurono, 0 down, door Ripentaerisuri toll, and the like can be given door re-sorbitol.
- components (x) and (y) represented by the general formulas (XV-a) to (XV-j) include trihexyl ether of glycerin and dimethyloctyl triglyceride of glycerin.
- glycerin di (methyloxyisopropylene) dodecyl triether glycerin diphenyl octyl triether, glycerin di (phenyloxyisopropylene) dodecyl triether, trimethylolpropane tri Hexyl ether, dimethyloctyl triether of trimethylolpropane, di (methyloxyisopropylene) dodecyl triether of trimethylolpropane, tetrahexyl ether of pentaerythritol, and pentaerythritol of pentaerythritol Trimethyloctylte Traetene, Centaerythritol Poly (methyloxyisopropylene) dodecyl tetraether, sorbitol hexapropyl ether, sorbitol tetramethyloctyl pentaether, sorbitol hexyl
- (X) kinematic viscosity at 4 0 ° C for (y) component, 5 ⁇ 2 0 0 mm 2 / s , preferably in the range of 1 0 ⁇ 1 0 0 mm 2 Z s. If it is less than 5 mm 2 Zs, the effect of improving lubricity and the effect of preventing clogging are small, and if it exceeds 200 mm 2 s, the compatibility with the refrigerant (two-layer separation temperature) is undesirably reduced.
- one of the above components (X) and (y) may be used alone, or two or more of them may be used in combination.
- the amount is preferably in the range of 0.1 to 30% by weight based on the total amount of the composition. This compounding amount is 0. When the amount is less than 1% by weight, the object of the present invention is not sufficiently exhibited. When the amount exceeds 30% by weight, the effect is not improved for the amount, and the solubility in the base oil may be reduced. . A more preferred amount is in the range of 0.1 to 15% by weight, and particularly preferably in the range of 0.5 to 10% by weight.
- the lubricating oil composition constituting the refrigerating machine oil composition of the present invention may further contain various known additives, for example, copper such as benzotriazole or a derivative thereof, as long as the purpose of the present invention is not impaired.
- An inactivator, an antifoaming agent such as silicone oil / fluorinated silicone oil and the like can be appropriately compounded.
- These additives are contained in the lubricating oil composition in an amount of 0.5 to 10% by weight.
- the method for producing the refrigerating machine oil composition of the present invention comprises the steps of: adding a carbonyl carbonate derivative (B) and Z or a polyol (C) to a polyoxyalkylene glycol; an extreme pressure agent and an acid scavenger used as necessary.
- An antioxidant, a corrosion inhibitor and the like may be blended, and various methods can be used.
- a metal carboxylate is used as the extreme pressure agent, the carboxylic acid and the aluminum hydroxide are added to the solvent and reacted at room temperature or under heating, and the metal carboxylate is used as the solvent.
- n-butyl alcohol is 0-butyl alcohol; sec-butyl alcohol; t-butyl alcohol; n-amido Norealco—Nore; iso—Aminoranoreco; sec—Aminorenorreco; n—Hexyl alcohol; Methylamyl alcohol; Ethylbutyl alcohol—Heptyl alcohol; n—Octylanololecol; sec—octyl alcohol; 2—ethylhexyl alcohol; is 0—octyl alcohol; n—nonyl alcohol; 2,6-dimethyl-4—heptanol; n—decyl alcohol; cyclohexanol Glyco Ethylene glycol; diethylene glycol; triethylene glycol; tetraethylene glycol; propylene glycol; dipropylene glycol; 1,4-butylene glycol; 2, 3
- Ketones include ethyl butyl ketone, dipropyl ketone, methyl amyl ketone, methyl hexyl ketone, and diisobutyl ketone, and fatty acids include the aforementioned fatty acids having 3 to 30 carbon atoms.
- the concentration of the metal salt to be dissolved and dispersed in the above solvent is not particularly limited, and may be appropriately selected depending on each situation.
- the diacid-carbon refrigerant may be any one containing carbon dioxide as a main component, such as a hydrocarbon refrigerant such as propane or isobutane, an ammonia refrigerant, 1, 1, 1, 2—tetrafluoro.
- a hydrocarbon refrigerant such as propane or isobutane
- an ammonia refrigerant 1, 1, 1, 2—tetrafluoro.
- the refrigerant may be a refrigerant containing a fluorocarbon refrigerant, such as a fluorocarbon resin or a fluorocarbon resin represented by 4a). Even in these cases, the effects of the present invention are exhibited as long as carbon dioxide is the main component.
- the amount of the carbon dioxide refrigerant and the refrigerator oil composition used is 9 9/1-10 in terms of the weight ratio of the refrigerant Z refrigerator oil composition. It is preferably in the range of / 90.
- the weight ratio of the refrigerant / refrigeration oil composition is more preferably in the range of 95Z5 to 30/70.
- the refrigerating machine oil composition of the present invention can be used for various types of refrigerating machines, but can be particularly preferably applied to a compression refrigerating cycle of a compression refrigerating machine.
- the refrigerating machine oil composition of the present invention includes, for example, Japanese Unexamined Patent Application Publication No. Hei 4-187878, JP-A-8-259975, JP-A-8-24036-2, JP-A-25-37979, No. 8-24 032 52, No. 5-1 7792, No. 8-22 771, No. 8-23 1972, etc.
- the refrigerating machine oil composition of the present invention is applied to a compression refrigeration cycle having an oil separator and a Z or hot gas line as shown in each of FIGS.
- a compression refrigeration cycle consists of a compressor-condenser-expansion valve-evaporator.
- lubricating oil for a refrigerator has good compatibility with the refrigerant used for the refrigerator.
- lubricating the refrigerator with commonly used refrigerating machine oil results in insufficient wear resistance and insufficient stability.
- long-term stable use was not possible. This tendency is particularly remarkable when using a capillary tube as an expansion valve, such as a refrigerating cycle for an electric refrigerator or a small air conditioner.
- the refrigerating machine oil of the present invention comprises an oil separator and / or a hot gas. It is also effective as a refrigerating machine oil composition when a compression refrigeration cycle having a line is operated using a refrigerant containing carbon dioxide as a main component.
- test method used in the examples is as follows.
- a total of 3.0 g of sample oil and carbon dioxide gas refrigerant in a ratio of 1: 9 (weight ratio) was sealed in a glass pressure-resistant container with an internal volume of 10 ml, and gradually raised from a homogeneously dissolved state. The temperature was measured, and the temperature at which the sample oil and refrigerant began to separate was measured and defined as the critical melting temperature.
- the pin was made of steel (SUJ-2) and the block was made of aluminum (A4302), and the wear amount (mg) of the block in a carbon dioxide gas refrigerant atmosphere was measured.
- the experimental conditions were as follows: sample oil: 300 m1, oil temperature: 50 ° C, carbon dioxide gas pressure: 2 MPa, rotation speed: 200 rpm, load: 3501 bs, and experiment time: 60 minutes. .
- each of the refrigerator oil compositions of Examples and Comparative Examples contained 1.5% by weight of an acid scavenger ( ⁇ - Lev b N'okisai de) and 0.5 wt 0/0 of the antioxidant (2, 6-di-tert - butyl one 4 - are blended main Chirufu d Roh Ichiru) and.
- the base oil components and extreme pressure agents in Table 1 represent the following compounds.
- Base oil component ⁇ ()] is the composition ratio of the copolymer, and [] is the kinematic viscosity at 100 ° C. ⁇
- Component (A) (polyoxyalkylene glycol)
- PAG-A Polyoxypropylene glycol dimethyl ether [10.9 mm 2 / s]
- PAG - B Poly oxyethylene Les emission (2 0) Okishipuro pyrene (8 0) glyceryl Korujime Chirue one ether [2 0. 5 mm 2 / s ]
- PAG-C Polyoxypropylene glycol monomethyl ether [9.7 mm 2 / s]
- PAG-D Polyoxyethylene (10) oxypropylene (90) glycol mono (n-butyl) ether [11.2 mm 2 / s] (B) component (carbonyl carbonate derivative)
- PC-1 carbonyl carbonate [13.0 mm 2 / s] obtained by repeating Example 3 of JP-A-4-18724
- PC-2 carbonyl carbonate [10.2 mm 2 / s] obtained by repeating Example 1 of JP-A-4-18725
- composition Composition in base oil composition (% by weight)
- Amount Amount based on base oil composition (% by weight)
- oxygenated compounds such as polyoxyalkylene glycol / polyol ester alone as base oils for refrigerator oil for carbon dioxide refrigerants, but no attempt has been made to mix both.
- the present invention provides a polyoxyalkylene glycol comprising a base oil blended with a polyoxyalkylene glycol having a specific kinematic viscosity and a carbonyl carbonate derivative having a specific kinematic viscosity and / or a polyester in a specific ratio.
- a polyoxyalkylene glycol comprising a base oil blended with a polyoxyalkylene glycol having a specific kinematic viscosity and a carbonyl carbonate derivative having a specific kinematic viscosity and / or a polyester in a specific ratio.
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00985880A EP1243639B1 (en) | 1999-12-28 | 2000-12-26 | Use of a refrigerating machine oil composition for carbon dioxide refrigerant |
CA002395611A CA2395611A1 (en) | 1999-12-28 | 2000-12-26 | Refrigerating machine oil composition for carbon dioxide refrigerant |
DE60042754T DE60042754D1 (de) | 1999-12-28 | 2000-12-26 | Verwendung einer ölzusammensetzung für kohlendioxidkühlmaschine |
AT00985880T ATE439416T1 (de) | 1999-12-28 | 2000-12-26 | Verwendung einer ölzusammensetzung für kohlendioxidkühlmaschine |
JP2001548643A JP4705743B2 (ja) | 1999-12-28 | 2000-12-26 | 二酸化炭素冷媒用冷凍機油組成物 |
US10/168,863 US6759373B2 (en) | 1999-12-28 | 2000-12-26 | Refrigerating machine oil composition for carbon dioxide refrigerant |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP37334499 | 1999-12-28 | ||
JP11-373344 | 1999-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001048127A1 true WO2001048127A1 (fr) | 2001-07-05 |
Family
ID=18502005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/009228 WO2001048127A1 (fr) | 1999-12-28 | 2000-12-26 | Composition lubrifiante pour refrigerant a base de dioxyde de carbone utilisee dans une machine frigorifique |
Country Status (10)
Country | Link |
---|---|
US (1) | US6759373B2 (ja) |
EP (1) | EP1243639B1 (ja) |
JP (1) | JP4705743B2 (ja) |
KR (1) | KR100751170B1 (ja) |
CN (1) | CN1221647C (ja) |
AT (1) | ATE439416T1 (ja) |
CA (1) | CA2395611A1 (ja) |
DE (1) | DE60042754D1 (ja) |
TW (1) | TW526262B (ja) |
WO (1) | WO2001048127A1 (ja) |
Cited By (24)
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JPH0930697A (ja) * | 1995-07-14 | 1997-02-04 | Dainippon Printing Co Ltd | テープレススプライス時の張力制御方法 |
JP2002180074A (ja) * | 2000-12-12 | 2002-06-26 | Nippon Mitsubishi Oil Corp | 二酸化炭素冷媒用冷凍機油および冷凍機用流体組成物 |
JP2002180075A (ja) * | 2000-12-12 | 2002-06-26 | Nippon Mitsubishi Oil Corp | 二酸化炭素冷媒用冷凍機油及び冷凍機用流体組成物 |
JP2002194368A (ja) * | 2000-10-17 | 2002-07-10 | Nippon Mitsubishi Oil Corp | 冷凍機油 |
WO2003057804A1 (de) | 2001-12-29 | 2003-07-17 | Fuchs Petrolub Ag | Betriebsmittel für kohlendioxid-kälte- und klimaanlagen |
WO2005012467A1 (ja) * | 2003-08-01 | 2005-02-10 | Nippon Oil Corporation | 冷凍機油組成物 |
WO2006022023A1 (ja) * | 2004-08-24 | 2006-03-02 | Idemitsu Kosan Co., Ltd. | 二酸化炭素冷媒用冷凍機油組成物 |
JP2006183031A (ja) * | 2004-12-03 | 2006-07-13 | Univ Nihon | 二酸化炭素を作動流体とした冷却または加熱装置の圧縮機用潤滑油 |
WO2008041549A1 (fr) * | 2006-09-29 | 2008-04-10 | Idemitsu Kosan Co., Ltd. | Lubrifiant pour machine réfrigérant à compression |
JP2008151044A (ja) * | 2006-12-19 | 2008-07-03 | Matsushita Electric Ind Co Ltd | 圧縮機 |
WO2009072314A1 (ja) * | 2007-12-04 | 2009-06-11 | Hitachi Appliances, Inc. | 冷媒圧縮機および冷凍サイクル |
JP2009263666A (ja) * | 2008-04-04 | 2009-11-12 | Denso Corp | 冷凍機油組成物 |
US7959824B2 (en) | 2003-08-01 | 2011-06-14 | Nippon Oil Corporation | Refrigerating machine oil composition |
JP2011162799A (ja) * | 2011-06-01 | 2011-08-25 | Jx Nippon Oil & Energy Corp | 二酸化炭素冷媒用冷凍機油及び冷凍機用流体組成物 |
US8168572B2 (en) | 2007-04-25 | 2012-05-01 | Dow Global Technologies Llc | Lubricant blend composition |
JP2014065923A (ja) * | 2014-01-07 | 2014-04-17 | Jx Nippon Oil & Energy Corp | 二酸化炭素冷媒用冷凍機油及び冷凍機用流体組成物 |
JP2014521794A (ja) * | 2011-08-03 | 2014-08-28 | コグニス アイピー マネジメント ゲゼルシャフト ミット ベシュレンクテル ハフツング | 改善された酸化安定性と耐用寿命を有する潤滑剤組成物 |
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EP0499793A1 (en) * | 1991-01-18 | 1992-08-26 | Nippon Oil Co., Ltd. | Synthetic lubricating oils |
JPH05194968A (ja) * | 1992-01-17 | 1993-08-03 | Nippon Oil Co Ltd | 合成潤滑油 |
JPH1046169A (ja) * | 1996-08-06 | 1998-02-17 | Idemitsu Kosan Co Ltd | 冷凍機用潤滑油組成物 |
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- 2000-12-26 DE DE60042754T patent/DE60042754D1/de not_active Expired - Lifetime
- 2000-12-26 EP EP00985880A patent/EP1243639B1/en not_active Expired - Lifetime
- 2000-12-26 AT AT00985880T patent/ATE439416T1/de not_active IP Right Cessation
- 2000-12-26 WO PCT/JP2000/009228 patent/WO2001048127A1/ja active Application Filing
- 2000-12-26 JP JP2001548643A patent/JP4705743B2/ja not_active Expired - Fee Related
- 2000-12-26 CN CNB008179328A patent/CN1221647C/zh not_active Expired - Fee Related
- 2000-12-26 US US10/168,863 patent/US6759373B2/en not_active Expired - Lifetime
- 2000-12-26 CA CA002395611A patent/CA2395611A1/en not_active Abandoned
- 2000-12-26 KR KR1020027008394A patent/KR100751170B1/ko not_active IP Right Cessation
- 2000-12-27 TW TW089128054A patent/TW526262B/zh not_active IP Right Cessation
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Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0930697A (ja) * | 1995-07-14 | 1997-02-04 | Dainippon Printing Co Ltd | テープレススプライス時の張力制御方法 |
JP2002194368A (ja) * | 2000-10-17 | 2002-07-10 | Nippon Mitsubishi Oil Corp | 冷凍機油 |
JP2002180074A (ja) * | 2000-12-12 | 2002-06-26 | Nippon Mitsubishi Oil Corp | 二酸化炭素冷媒用冷凍機油および冷凍機用流体組成物 |
JP2002180075A (ja) * | 2000-12-12 | 2002-06-26 | Nippon Mitsubishi Oil Corp | 二酸化炭素冷媒用冷凍機油及び冷凍機用流体組成物 |
WO2003057804A1 (de) | 2001-12-29 | 2003-07-17 | Fuchs Petrolub Ag | Betriebsmittel für kohlendioxid-kälte- und klimaanlagen |
DE10164056B4 (de) * | 2001-12-29 | 2006-02-23 | Fuchs Petrolub Ag | Betriebsmittel für Kohlendioxid-Kälte- und Klimaanlagen |
US8796193B2 (en) | 2003-08-01 | 2014-08-05 | Nippon Oil Corporation | Refrigerating machine oil compositions |
WO2005012467A1 (ja) * | 2003-08-01 | 2005-02-10 | Nippon Oil Corporation | 冷凍機油組成物 |
US7959824B2 (en) | 2003-08-01 | 2011-06-14 | Nippon Oil Corporation | Refrigerating machine oil composition |
JP2010261052A (ja) * | 2003-08-01 | 2010-11-18 | Jx Nippon Oil & Energy Corp | 冷凍機油組成物 |
WO2006022023A1 (ja) * | 2004-08-24 | 2006-03-02 | Idemitsu Kosan Co., Ltd. | 二酸化炭素冷媒用冷凍機油組成物 |
JP2006183031A (ja) * | 2004-12-03 | 2006-07-13 | Univ Nihon | 二酸化炭素を作動流体とした冷却または加熱装置の圧縮機用潤滑油 |
US8409464B2 (en) | 2006-09-29 | 2013-04-02 | Idemitsu Kosan Co., Ltd. | Lubricant for compression refrigerating machine and refrigerating apparatus using the same |
WO2008041549A1 (fr) * | 2006-09-29 | 2008-04-10 | Idemitsu Kosan Co., Ltd. | Lubrifiant pour machine réfrigérant à compression |
EP2071012A4 (en) * | 2006-09-29 | 2011-05-04 | Idemitsu Kosan Co | LUBRICANTS FOR COMPRESSION COOLING MACHINE |
JP2008151044A (ja) * | 2006-12-19 | 2008-07-03 | Matsushita Electric Ind Co Ltd | 圧縮機 |
US8168572B2 (en) | 2007-04-25 | 2012-05-01 | Dow Global Technologies Llc | Lubricant blend composition |
JP2009138957A (ja) * | 2007-12-04 | 2009-06-25 | Hitachi Appliances Inc | 冷媒圧縮機および冷凍サイクル |
WO2009072314A1 (ja) * | 2007-12-04 | 2009-06-11 | Hitachi Appliances, Inc. | 冷媒圧縮機および冷凍サイクル |
JP2009263666A (ja) * | 2008-04-04 | 2009-11-12 | Denso Corp | 冷凍機油組成物 |
US9315708B2 (en) | 2011-05-04 | 2016-04-19 | Arkema France | Heat-transfer compositions exhibiting improved miscibility with the lubricating oil |
US9676984B2 (en) | 2011-05-04 | 2017-06-13 | Arkema France | Heat-transfer compositions exhibiting improved miscibility with the lubricating oil |
JP2011162799A (ja) * | 2011-06-01 | 2011-08-25 | Jx Nippon Oil & Energy Corp | 二酸化炭素冷媒用冷凍機油及び冷凍機用流体組成物 |
US9371500B2 (en) | 2011-08-03 | 2016-06-21 | Cognis Ip Management Gmbh | Lubricant compositions with improved oxidation stability and service life |
JP2014521794A (ja) * | 2011-08-03 | 2014-08-28 | コグニス アイピー マネジメント ゲゼルシャフト ミット ベシュレンクテル ハフツング | 改善された酸化安定性と耐用寿命を有する潤滑剤組成物 |
JP2014533313A (ja) * | 2011-11-15 | 2014-12-11 | シェブロン・オロナイト・カンパニー・エルエルシー | グリセロール含有機能性液体 |
JP2016166333A (ja) * | 2011-11-15 | 2016-09-15 | シェブロン・オロナイト・カンパニー・エルエルシー | グリセロール含有機能性液体 |
US10450488B2 (en) | 2012-01-26 | 2019-10-22 | Arkema France | Heat transfer compositions having improved miscibility with lubricating oil |
WO2015037563A1 (ja) | 2013-09-12 | 2015-03-19 | 出光興産株式会社 | 冷凍機油組成物 |
US10000722B2 (en) | 2013-09-12 | 2018-06-19 | Idemitsu Kosan Co., Ltd. | Refrigeration machine oil composition |
JP2014065923A (ja) * | 2014-01-07 | 2014-04-17 | Jx Nippon Oil & Energy Corp | 二酸化炭素冷媒用冷凍機油及び冷凍機用流体組成物 |
US10450531B2 (en) | 2014-11-07 | 2019-10-22 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition for refrigerator, and refrigerator |
WO2016072302A1 (ja) * | 2014-11-07 | 2016-05-12 | 出光興産株式会社 | 冷凍機用潤滑油組成物及び冷凍機 |
JP2017095544A (ja) * | 2015-11-19 | 2017-06-01 | 出光興産株式会社 | 冷凍機用潤滑油組成物、冷凍機用組成物、潤滑方法及び冷凍機 |
KR20180084787A (ko) * | 2015-11-19 | 2018-07-25 | 이데미쓰 고산 가부시키가이샤 | 냉동기용 윤활유 조성물, 냉동기용 조성물, 윤활 방법 및 냉동기 |
WO2017086422A1 (ja) * | 2015-11-19 | 2017-05-26 | 出光興産株式会社 | 冷凍機用潤滑油組成物、冷凍機用組成物、潤滑方法及び冷凍機 |
US10662392B2 (en) | 2015-11-19 | 2020-05-26 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition for refrigerator, composition for refrigerator, lubricating method, and refrigerator |
KR102646480B1 (ko) | 2015-11-19 | 2024-03-11 | 이데미쓰 고산 가부시키가이샤 | 냉동기용 윤활유 조성물, 냉동기용 조성물, 윤활 방법 및 냉동기 |
US11629278B2 (en) | 2018-02-15 | 2023-04-18 | Arkema France | Heat transfer compositions as replacement for R-134A |
Also Published As
Publication number | Publication date |
---|---|
TW526262B (en) | 2003-04-01 |
EP1243639A1 (en) | 2002-09-25 |
US20030032563A1 (en) | 2003-02-13 |
ATE439416T1 (de) | 2009-08-15 |
EP1243639B1 (en) | 2009-08-12 |
JP4705743B2 (ja) | 2011-06-22 |
EP1243639A4 (en) | 2003-06-11 |
CN1221647C (zh) | 2005-10-05 |
CA2395611A1 (en) | 2001-07-05 |
DE60042754D1 (de) | 2009-09-24 |
CN1415004A (zh) | 2003-04-30 |
KR20020068390A (ko) | 2002-08-27 |
KR100751170B1 (ko) | 2007-08-22 |
US6759373B2 (en) | 2004-07-06 |
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