WO2024009989A1 - Base oil for metal processing oil composition, and metal processing oil composition - Google Patents
Base oil for metal processing oil composition, and metal processing oil composition Download PDFInfo
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- WO2024009989A1 WO2024009989A1 PCT/JP2023/024729 JP2023024729W WO2024009989A1 WO 2024009989 A1 WO2024009989 A1 WO 2024009989A1 JP 2023024729 W JP2023024729 W JP 2023024729W WO 2024009989 A1 WO2024009989 A1 WO 2024009989A1
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- oil composition
- metal working
- working oil
- base oil
- metal
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- 239000003921 oil Substances 0.000 title claims abstract description 116
- 239000000203 mixture Substances 0.000 title claims abstract description 108
- 239000002199 base oil Substances 0.000 title claims abstract description 85
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 title abstract description 17
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 25
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 25
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 18
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 15
- 238000005160 1H NMR spectroscopy Methods 0.000 claims abstract description 9
- 238000004458 analytical method Methods 0.000 claims abstract description 7
- 238000005555 metalworking Methods 0.000 claims description 99
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 20
- 238000004821 distillation Methods 0.000 claims description 15
- 125000004432 carbon atom Chemical group C* 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 10
- 238000012360 testing method Methods 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 14
- 239000003112 inhibitor Substances 0.000 description 14
- 238000009835 boiling Methods 0.000 description 12
- 238000005259 measurement Methods 0.000 description 12
- -1 fatty acid esters Chemical class 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 8
- 239000000654 additive Substances 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000003963 antioxidant agent Substances 0.000 description 6
- 150000002148 esters Chemical class 0.000 description 6
- 239000002480 mineral oil Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 5
- 239000000194 fatty acid Substances 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 235000010446 mineral oil Nutrition 0.000 description 5
- 238000007670 refining Methods 0.000 description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000002518 antifoaming agent Substances 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 150000004665 fatty acids Chemical class 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 229920000193 polymethacrylate Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- 229920002367 Polyisobutene Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000001447 alkali salts Chemical class 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000010409 ironing Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920001515 polyalkylene glycol Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- ZORQXIQZAOLNGE-UHFFFAOYSA-N 1,1-difluorocyclohexane Chemical compound FC1(F)CCCCC1 ZORQXIQZAOLNGE-UHFFFAOYSA-N 0.000 description 1
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical class CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000005037 alkyl phenyl group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- WDNQRCVBPNOTNV-UHFFFAOYSA-N dinonylnaphthylsulfonic acid Chemical compound C1=CC=C2C(S(O)(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1 WDNQRCVBPNOTNV-UHFFFAOYSA-N 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical class C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000001593 sorbitan monooleate Substances 0.000 description 1
- 229940035049 sorbitan monooleate Drugs 0.000 description 1
- 235000011069 sorbitan monooleate Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- MBBWTVUFIXOUBE-UHFFFAOYSA-L zinc;dicarbamodithioate Chemical class [Zn+2].NC([S-])=S.NC([S-])=S MBBWTVUFIXOUBE-UHFFFAOYSA-L 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Images
Classifications
-
- 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
- C10M105/02—Well-defined hydrocarbons
- C10M105/04—Well-defined hydrocarbons aliphatic
-
- 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
- C10M109/00—Lubricating compositions characterised by the base-material being a compound of unknown or incompletely defined constitution
Definitions
- the present invention relates to a base oil for a metal working oil composition and a metal working oil composition.
- metal processing oil compositions have been used to lubricate the processed parts of metal workpieces.
- Metalworking oil compositions are required to have excellent workability, such as suppressing seizure between the workpiece and the tool.
- a composition containing a lubricating base oil and additives such as fatty acids, fatty acid esters, higher alcohols, and ⁇ -olefins is used.
- additives such as fatty acids, fatty acid esters, higher alcohols, and ⁇ -olefins.
- the content of additives is increased to solve these problems, the removal of the additives by heat will be incomplete, causing discoloration and other appearance problems, as well as increasing odor and deteriorating the working environment.
- Processing oil costs will also rise. Furthermore, processing oil adhering to the workpiece after processing must be removed by heating. Therefore, processing oil is required to have a certain level of volatility. However, if the volatility of the processing oil is improved, the processing oil will volatilize before and during processing, making it impossible to obtain sufficient workability. For this reason, machining oil is required to have the contradictory performance of quickly and sufficiently volatilizing (good removability) in the machining oil removal process, but being difficult to volatilize at room temperature.
- Patent Document 1 discloses that the base oil contains 99.9 to 98 parts by mass of a base oil with an aniline point of 70° C. or higher and 0.01 to 2.0 parts by mass of a specific additive, and has a kinematic viscosity of 1.1 to 100 mm. 2 /s (at 40° C.) is disclosed. Further, in Examples of Patent Document 1, polyisobutylene is disclosed as the base oil. It is disclosed that the press lubricating oil has excellent lubricity and the like.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a base oil for a metal working oil composition and a metal working oil composition that have good processability and removability.
- the present invention employs the following configuration.
- Metal processing that is a hydrocarbon with a flash point of 70°C or higher and a proton ratio of methyl groups of 17 to 65 when the integral value of all protons detected by 1 H-NMR analysis is 100.
- Base oil for oil compositions [2] In the carbon number distribution obtained by gas chromatographic distillation, the ratio (CB) of the ratio of the hydrocarbon with the highest carbon number (CA) to the ratio of the hydrocarbon with the second highest ratio (CB) /CA) is 0.4 or more, the base oil for a metal working oil composition according to [1]. [3] The metalworking oil composition base according to [1] or [2], wherein the proportion (CD) of hydrocarbons having 12 or less carbon atoms is 10% or more in the carbon number distribution obtained by gas chromatographic distillation. oil.
- a base oil for a metal working oil composition and a metal working oil composition that have good processability and removability.
- the base oil for a metal working oil composition of this embodiment is a base oil that is most suitable for use as a base oil for a metal working oil composition for lubricating the processed parts of a metal workpiece.
- Mineral oil or the like is used as the base oil for the metal working oil composition.
- the mineral oil distillate oil obtained by atmospheric distillation of crude oil can be used. Furthermore, a lubricating oil fraction obtained by further distilling this distillate under reduced pressure and refining the distillate obtained by various refining processes can also be used.
- As the purification process hydrorefining, solvent extraction, solvent dewaxing, hydrodewaxing, sulfuric acid washing, clay treatment, and the like can be appropriately combined. Mineral oil can be obtained by combining these refining processes in an appropriate order. Alternatively, a mixture of a plurality of refined oils with different properties obtained by subjecting different crude oils or distillate oils to a combination of different refining processes may be used.
- the base oil for the metal working oil composition of this embodiment has a flash point of 70°C or higher, preferably 75°C or higher, and more preferably 80°C or higher.
- the upper limit of the flash point is not particularly limited, but may be, for example, less than 200°C, 180°C or less, or 150°C or less.
- the base oil for the metal working oil composition of this embodiment has a flash point of 70° C. or higher, so it is highly safe. If the flash point of the base oil for metal working oil composition of this embodiment is equal to or higher than the above-mentioned preferable lower limit, safety will be further enhanced.
- the flash point of the base oil for metalworking oil compositions means the value measured by the Pensky-Martens closed method defined in JIS K2265-3:2007.
- the base oil for the metal working oil composition of the present embodiment is a hydrocarbon having a proton ratio of methyl groups of 17 to 65 when the integral value of all protons detected by 1 H-NMR analysis is 100.
- the base oil for a metal working oil composition in one embodiment has isoparaffins with relatively little branching as a main component.
- the proton ratio of the methyl group is 65 or less, preferably 60 or less, more preferably 45 or less, and preferably 35 or less. More preferred.
- the proton ratio of the methyl group is 17 or more, preferably 20 or more, and more preferably 25 or more.
- the proton ratio of the methyl groups in the base oil for metalworking oil compositions is less than 17, that is, when the base oil has less branching, multiple molecules of the base oil are densely stacked, and the additives used in combination. It is assumed that this makes it difficult for the agent to adsorb onto the surface of the workpiece.
- the proton ratio of the methyl group in the base oil for metal working oil composition is more than 65, that is, when the base oil has more branches, the gaps between multiple molecules of the base oil are reduced. It is assumed that the additives used in combination become difficult to adsorb onto the surface of the workpiece.
- the proton ratio of the methyl group of the base oil for metal working oil composition is within the above-mentioned preferable numerical range, that is, when the branching of the base oil is moderate, a plurality of molecules of the base oil become irregular, It is presumed that the gaps between the molecules of the base oil increase, and the additive used in combination becomes more likely to be adsorbed onto the surface of the workpiece.
- the proton ratio of the methyl groups in the base oil for metalworking oil compositions is within the above preferred numerical range, the distance between the molecules is large, so the intermolecular force is small, and the energy required for evaporation is reduced. It is assumed that it will become smaller. Therefore, when the proton ratio of the methyl group in the base oil for the metal working oil composition of this embodiment is within the above-mentioned preferred numerical range, processability and removability are improved.
- the proton ratio of the methyl group is preferably 20 or more and 60 or less, more preferably 20 or more and 45 or less, and 25 or more and 35 or less. It is even more preferable that there be.
- the measurement device and measurement conditions for 1 H-NMR measurement are as follows. Equipment used: Bruker, AVANCE III HD-cryo600 type NMR 1H resonance frequency: 600.18MHz Solvent: CDCl3 Concentration: Approximately 50mg/mL Measurement method: 1H non-decoupling method Pulse width: 30° pulse Waiting time: 5 sec Chemical shift standard: CHCl3 in CDCl3 (7.28 ppm)
- the proton ratio of the methyl group in the base oil for the metal working oil composition of this embodiment is determined by the selection of crude oil and by atmospheric distillation and distillation of the crude oil. Refining conditions (temperature, pressure, This can be controlled by appropriately managing catalysts, etc.).
- the base oil for the metal working oil composition of this embodiment is GTL or CTL
- the proton ratio of the methyl group in the base oil for the metal working oil composition of this embodiment is determined by the reaction conditions of the FT reaction (temperature, pressure, This can be controlled by appropriately managing catalysts, etc.).
- the base oil for the metal working oil composition of the present embodiment is preferably a hydrocarbon having 6 to 20 carbon atoms, more preferably a hydrocarbon having 6 to 18 carbon atoms. Moreover, it is preferable that the base oil for the metal working oil composition of this embodiment is a mixture of hydrocarbons having different carbon numbers.
- the number of carbon atoms in the hydrocarbon in the present invention means the number of carbon atoms obtained by gas chromatographic distillation as described below.
- the base oil for the metal working oil composition of this embodiment has a carbon number distribution including a ratio of the hydrocarbon having the highest carbon number (CA) and a ratio of the hydrocarbon having the second highest carbon number (CB).
- the ratio (CB/CA) is preferably 0.4 or more, more preferably 0.5 or more, even more preferably 0.6 or more, particularly 0.7 or more. preferable.
- the above (CB/CA) is at least the above preferable value, the number of hydrocarbons having different carbon numbers increases, so that the removability is further improved.
- the proportion (CD) of hydrocarbons having 12 or less carbon atoms is preferably 10% or more, more preferably 15% or more, and 25% or more. It is more preferable that it be at least 40%, particularly preferably 40% or more.
- the proportion (CD) of hydrocarbons having 12 or less carbon atoms is at least the above-mentioned preferred value, the removability is further improved.
- the carbon number distribution in the base oil for the metalworking oil composition of this embodiment is determined by distillation while precisely adjusting the pressure, temperature, reflux ratio, or the number of stages of the distillation column when producing the mineral oil, GTL, and CTL mentioned above. It can be controlled by
- the base oil for the metalworking oil composition of this embodiment preferably has an initial boiling point of 170°C or higher, more preferably 180°C or higher, and even more preferably 190°C or higher.
- the base oil for the metal working oil composition of this embodiment preferably has an end point of 300°C or lower, more preferably 270°C or lower, and even more preferably 240°C or lower.
- the initial boiling point and end point of the base oil for metal working oil compositions mean values measured by the normal pressure method defined in JIS K2254:2018.
- the difference between the end point and the initial boiling point (end point - initial boiling point) of the base oil for the metalworking oil composition of this embodiment is preferably 23°C or higher, more preferably 30°C or higher, and 35°C or higher. It is more preferable that the temperature is at least °C.
- the base oil for a metal working oil composition of one embodiment has a flash point of 70°C or higher, preferably 75°C or higher, more preferably 80°C or higher,
- the proton ratio of the methyl group is 65 or less, preferably 60 or less, more preferably 45 or less, even more preferably 35, when the integral value of all protons detected by 1 H-NMR analysis is 100.
- the proton ratio of the methyl group is 17 or more, preferably 20 or more, more preferably 25 or more, when the integral value of all protons detected by 1 H-NMR analysis is 100,
- the ratio of the ratio of the hydrocarbon with the highest carbon number (CA) to the ratio of the hydrocarbon with the second highest carbon number (CB) (CB/CA) is preferably 0.4 or more, more preferably 0.5 or more, even more preferably 0.6 or more, particularly preferably 0.7 or more
- the proportion (CD) of hydrocarbons having 12 or less carbon atoms is preferably 10% or more, more preferably 15% or more, even more preferably 25% or more, particularly preferably 40% or more, Preferably it is a mixture of hydrocarbons having 6 to 20 carbon atoms, more preferably a mixture of hydrocarbons having 6 to 18 carbon atoms.
- the base oil for the metal working oil composition preferably has an initial boiling point of 170°C or higher, more preferably 180°C or higher, and 190°C or higher. is more preferable,
- the end point is preferably 300°C or lower, more preferably 270°C or lower, even more preferably 240°C or lower,
- the difference between the end point and the initial boiling point (end point - initial boiling point) is preferably 23°C or higher, more preferably 30°C or higher, even more preferably 35°C or higher.
- the base oil for a metal working oil composition of this embodiment is a base oil suitable for use as a base oil for a metal working oil composition described below. Only the base oil for metal working oil composition of this embodiment may be used for metal working.
- processing methods include metal processing such as cold, warm, or hot rolling, pressing, punching, ironing, drawing, drawing, forging, and cutting and grinding including micro-cutting (MQL).
- MQL micro-cutting
- the metal include aluminum, magnesium, and alloys thereof, transition metals such as copper, iron, chromium, nickel, zinc, tin, titanium, and alloys thereof, electromagnetic steel, stainless steel, and the like.
- the base oil for metal working oil composition of this embodiment preferably has a kinematic viscosity at 40°C of 5 mm 2 /s or less, more preferably 3 mm 2 /s or less, and 2 mm 2 /s or less. It is even more preferable.
- the kinematic viscosity in the present invention is a value measured in accordance with JIS K2283:2000.
- the metal working oil composition of this embodiment is a metal working oil composition containing the above-mentioned base oil for metal working oil compositions and optional components.
- the optional components include base oils other than the above-mentioned base oils for metal working oil compositions, oiliness agents, antioxidants, rust preventive agents, corrosion inhibitors, rust inhibitors, antifoaming agents, metal cleaning agents, and abrasion agents. Examples include inhibitors, viscosity index improvers, pour point depressants, mist inhibitors, and demulsifiers.
- Base oil Specific examples of base oils other than the above-mentioned base oils for metal-working oil compositions include synthetic oils and mineral oils that do not correspond to the above-mentioned base oils for metal-working oil compositions.
- synthetic oils include polyolefins such as poly- ⁇ -olefins, ester base oils such as diesters and polyol esters, polyalkylene glycols, alkylbenzenes, and alkylnaphthalenes.
- the content of the above-mentioned base oil for metal working oil compositions in the metal working oil composition of the present embodiment is preferably 90% by mass or more based on 100% by mass of the total amount of base oil contained in the metal working oil composition. , more preferably 95% by mass or more, further preferably 98% by mass or more, particularly preferably 100% by mass. That is, in the metalworking oil composition of one embodiment, the upper limit of the content of base oils other than the base oil for metalworking oil compositions described above is preferably 10% by mass or less, more preferably 5% by mass or less, and 2% by mass or less. It is more preferably less than % by mass.
- oily agents include esters and alcohols.
- ester include esters having 7 to 26 carbon atoms obtained from a monohydric alcohol and a monobasic acid.
- alcohol include monohydric alcohols.
- the metal working oil composition contains an oily agent
- the content thereof is, for example, 0.5 to 10% by mass based on the total amount of the metal working oil composition.
- One type of oily agent may be used alone, or a plurality of oily agents may be used in combination.
- antioxidants include phenolic compounds such as 2,6-di-t-butylphenol and 2,6-di-t-butyl-p-cresol; diphenylamine, dialkyldiphenylamine, phenyl- ⁇ -naphthylamine, p- Examples include amine compounds such as alkylphenyl- ⁇ -naphthylamine.
- the metal working oil composition contains an antioxidant, the content is, for example, 0.5 to 10% by mass based on the total amount of the metal working oil composition.
- One type of antioxidant may be used alone, or a plurality of antioxidants may be used in combination.
- ⁇ Corrosion inhibitor ⁇ for example, known corrosion inhibitors such as benzotriazole compounds, tolyltriazole compounds, thiadiazole compounds, and imidazole compounds can be used.
- the metal working oil composition contains a corrosion inhibitor, the content is, for example, 0.01 to 10% by mass based on the total amount of the metal working oil composition.
- One type of corrosion inhibitor may be used alone, or a plurality of corrosion inhibitors may be used in combination.
- ⁇ Rust inhibitor ⁇ As a rust inhibitor, specifically, salts of fatty acids such as oleic acid, sulfonates such as dinonylnaphthalene sulfonate, and partial esters of polyhydric alcohols such as sorbitan monooleate (of polyhydric alcohols that fall under oily agents) are used as rust inhibitors. (excluding partial esters), amines, and derivatives thereof.
- antifoaming agents examples include silicone antifoaming agents.
- the metal detergent examples include normal salts or basic salts of alkali metal or alkaline earth metal sulfonates, phenates, salicylates, and the like.
- the metal detergent is preferably a basic salt of an alkali metal or alkaline earth metal, such as a sulfonate, a phenate, or a salicylate, from the viewpoint of suppressing evaporation of the lower fatty acid by neutralizing the lower fatty acid.
- Preferred examples of the alkali metal include sodium and potassium.
- Preferred alkaline earth metals include magnesium, calcium, barium, and the like. Among these metals, magnesium or calcium is preferred, and calcium is more preferred.
- Anti-wear agent examples include dithiocarbamates, zinc dithiocarbamates, molybdenum dithiocarbamates, disulfides, polysulfides, sulfurized olefins, sulfurized oils and fats, and the like.
- Viscosity index improver examples include non-dispersed or dispersed poly(meth)acrylate-based viscosity index improvers, non-dispersed or dispersed olefin-(meth)acrylate copolymer-based viscosity index improvers, and styrene-maleic anhydride. Examples include acid ester copolymer-based viscosity index improvers, mixtures thereof, and the like.
- pour point depressant examples include polymethacrylate polymers and the like.
- mist preventive agent examples include ethylene-propylene copolymer, polymethacrylate, polyisobutylene, and polybutene.
- the average molecular weight of these compounds as mist inhibitors is usually 10,000 to 8,000,000.
- ⁇ Demulsifier examples include polyalkylene glycol nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, and polyoxyethylene alkyl naphthyl ether.
- the metal working oil composition of this embodiment is preferably used during metal working.
- processing methods include metal processing such as cold, warm, or hot rolling, pressing, punching, ironing, drawing, drawing, forging, and cutting and grinding including micro-cutting (MQL).
- MQL micro-cutting
- the metal include aluminum, magnesium, and alloys thereof, transition metals such as copper, iron, chromium, nickel, zinc, tin, titanium, and alloys thereof, electromagnetic steel, stainless steel, and the like.
- the metal working oil composition of this embodiment has good workability and removability, and is therefore particularly suitable for press working of aluminum, aluminum alloys, and electromagnetic steel.
- Base oils 1 and 2 having the physical properties shown in Table 1 were prepared.
- the measurement device and measurement conditions for 1 H-NMR measurement are as follows. Equipment used: Bruker, AVANCE III HD-cryo600 type NMR 1H resonance frequency: 600.18MHz Solvent: CDCl3 Concentration: Approximately 50mg/mL Measurement method: 1H non-decoupling method Pulse width: 30° pulse Waiting time: 5 sec Chemical shift standard: CHCl3 in CDCl3 (7.28 ppm)
- the initial boiling points and end points of base oils 1 and 2 were measured in accordance with the normal pressure method of JIS K 2254.
- the initial boiling point (IBP), final point (FBP), and difference between the final point and the initial boiling point (FBP-IBP) of base oils 1 and 2 are shown in Table 1.
- FIG. 1 is an explanatory diagram showing an outline of a flat plate sliding test.
- test piece 1 is made of aluminum alloy, and was subjected to the test after being dip-coated in the metal working oil composition of each example.
- This test piece 1 was held between a pair of flat blocks 2a and 2b, and a predetermined load (hereinafter referred to as "tightening load") was applied from the top side of the flat block 2a (arrow A in FIG. 1).
- the test piece 1 to which the clamping load was applied was pulled out in the horizontal direction (arrow B in FIG. 1).
- the pulling load when pulling out the test piece 1 was measured, and the results are shown in Table 2. It means that the smaller the pulling load when pulling out the test piece 1, the better the workability of the metal working oil composition. Details of the test conditions are as follows.
- Test piece JIS A1050 material Flat block 2a, 2b: SKD-11, 300 mm (width) x 600 mm (length) x 10 mm (thickness), contact area with test piece 1: 10 mm x 250 mm
- Tightening load 1.5kN
- Pulling speed 100mm/min
- Temperature of metal working oil composition in each example during dip coating 40°C ⁇ 3°C
- Temperature of test piece 1 during test 25°C ⁇ 3°C
- Flat block temperature 25°C ⁇ 3°C
- Example 1 As shown in Table 2, the metal working oil composition of Example 1 had a shorter drying time and lower maximum pullout load than the metal working oil composition of Comparative Example 1, so it had better removal performance and processing performance. I was able to confirm something.
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Abstract
A base oil for a metal processing oil composition, the base oil being a hydrocarbon having a flash point of 70°C or higher and a proton ratio of methyl groups of 17-65, where the integral value of all protons detected through 1H-NMR analysis is taken as 100.
Description
本発明は、金属加工油組成物用基油及び金属加工油組成物に関する。
本願は、２０２２年７月７日に日本に出願された、特願２０２２－１０９８２４号に基づき優先権主張し、その内容をここに援用する。 The present invention relates to a base oil for a metal working oil composition and a metal working oil composition.
This application claims priority based on Japanese Patent Application No. 2022-109824, filed in Japan on July 7, 2022, the contents of which are incorporated herein.
本願は、２０２２年７月７日に日本に出願された、特願２０２２－１０９８２４号に基づき優先権主張し、その内容をここに援用する。 The present invention relates to a base oil for a metal working oil composition and a metal working oil composition.
This application claims priority based on Japanese Patent Application No. 2022-109824, filed in Japan on July 7, 2022, the contents of which are incorporated herein.
従来、金属加工の分野では、金属製の被加工物の加工部位を潤滑するために金属加工油組成物が使用されている。金属加工油組成物には、被加工物と工具との間の焼付きを抑制するなどの優れた加工性が求められる。
金属加工油組成物としては、潤滑油基油と、脂肪酸、脂肪酸エステル、高級アルコール、α－オレフィン等の添加剤とを含有した組成物が使用されている。
しかし、従来の金属加工油組成物では、十分な加工性が得られず、素材表面の損傷が見られる場合がある。これらの問題を解決するため添加剤の含有量を多くすると、熱による添加剤の除去が不完全になり、変色など外観上の問題を引き起こすのに加え、臭気が増して作業環境を悪化させ、加工油コストも上昇する。
また、加工後に被加工物に付着している加工油は加熱により除去する必要がある。そのため、加工油には一定以上の揮発性が求められる。しかしながら、加工油の揮発性を良くすると、加工前、加工中に加工油が揮発してしまい十分な加工性が得られなくなる。このため、加工油には、加工油除去工程では速やかに、かつ十分に揮発する（除去性が良好である）が、室温では揮発し難いという相反する性能が求められている。 Conventionally, in the field of metal processing, metal processing oil compositions have been used to lubricate the processed parts of metal workpieces. Metalworking oil compositions are required to have excellent workability, such as suppressing seizure between the workpiece and the tool.
As the metal working oil composition, a composition containing a lubricating base oil and additives such as fatty acids, fatty acid esters, higher alcohols, and α-olefins is used.
However, with conventional metal working oil compositions, sufficient workability cannot be obtained, and damage to the surface of the material may be observed. If the content of additives is increased to solve these problems, the removal of the additives by heat will be incomplete, causing discoloration and other appearance problems, as well as increasing odor and deteriorating the working environment. Processing oil costs will also rise.
Furthermore, processing oil adhering to the workpiece after processing must be removed by heating. Therefore, processing oil is required to have a certain level of volatility. However, if the volatility of the processing oil is improved, the processing oil will volatilize before and during processing, making it impossible to obtain sufficient workability. For this reason, machining oil is required to have the contradictory performance of quickly and sufficiently volatilizing (good removability) in the machining oil removal process, but being difficult to volatilize at room temperature.
金属加工油組成物としては、潤滑油基油と、脂肪酸、脂肪酸エステル、高級アルコール、α－オレフィン等の添加剤とを含有した組成物が使用されている。
しかし、従来の金属加工油組成物では、十分な加工性が得られず、素材表面の損傷が見られる場合がある。これらの問題を解決するため添加剤の含有量を多くすると、熱による添加剤の除去が不完全になり、変色など外観上の問題を引き起こすのに加え、臭気が増して作業環境を悪化させ、加工油コストも上昇する。
また、加工後に被加工物に付着している加工油は加熱により除去する必要がある。そのため、加工油には一定以上の揮発性が求められる。しかしながら、加工油の揮発性を良くすると、加工前、加工中に加工油が揮発してしまい十分な加工性が得られなくなる。このため、加工油には、加工油除去工程では速やかに、かつ十分に揮発する（除去性が良好である）が、室温では揮発し難いという相反する性能が求められている。 Conventionally, in the field of metal processing, metal processing oil compositions have been used to lubricate the processed parts of metal workpieces. Metalworking oil compositions are required to have excellent workability, such as suppressing seizure between the workpiece and the tool.
As the metal working oil composition, a composition containing a lubricating base oil and additives such as fatty acids, fatty acid esters, higher alcohols, and α-olefins is used.
However, with conventional metal working oil compositions, sufficient workability cannot be obtained, and damage to the surface of the material may be observed. If the content of additives is increased to solve these problems, the removal of the additives by heat will be incomplete, causing discoloration and other appearance problems, as well as increasing odor and deteriorating the working environment. Processing oil costs will also rise.
Furthermore, processing oil adhering to the workpiece after processing must be removed by heating. Therefore, processing oil is required to have a certain level of volatility. However, if the volatility of the processing oil is improved, the processing oil will volatilize before and during processing, making it impossible to obtain sufficient workability. For this reason, machining oil is required to have the contradictory performance of quickly and sufficiently volatilizing (good removability) in the machining oil removal process, but being difficult to volatilize at room temperature.
特許文献１には、アニリン点が７０℃以上の基油９９．９～９８質量部と、特定の添加剤０．０１～２．０質量部とを含有し、動粘度が１．１～１００ｍｍ２／ｓ（ａｔ４０℃）であることを特徴とするプレス用潤滑油が開示されている。また、特許文献１の実施例において、基油としてポリイソブチレンが開示されている。該プレス用潤滑油は、優れた潤滑性等を有すると開示されている。
Patent Document 1 discloses that the base oil contains 99.9 to 98 parts by mass of a base oil with an aniline point of 70° C. or higher and 0.01 to 2.0 parts by mass of a specific additive, and has a kinematic viscosity of 1.1 to 100 mm. 2 /s (at 40° C.) is disclosed. Further, in Examples of Patent Document 1, polyisobutylene is disclosed as the base oil. It is disclosed that the press lubricating oil has excellent lubricity and the like.
特許文献１に記載されているような従来の金属加工油組成物においては、加工性及び除去性の両立について改善の余地がある。
In the conventional metal working oil composition as described in Patent Document 1, there is room for improvement in achieving both workability and removability.
本発明は、上記事情に鑑みてなされたものであって、加工性及び除去性が良好である金属加工油組成物用基油及び金属加工油組成物を提供することを課題とする。
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a base oil for a metal working oil composition and a metal working oil composition that have good processability and removability.
上記の課題を解決するために、本発明は以下の構成を採用した。
［１］引火点が７０℃以上であり、１Ｈ－ＮＭＲ分析により検出する全プロトンの積分値を１００とした際の、メチル基のプロトン比率が１７以上６５以下の炭化水素である、金属加工油組成物用基油。
［２］ガスクロマト蒸留により得られる炭素数分布において、最も割合が多い炭素数の炭化水素の割合（ＣＡ）と２番目に割合が多い炭素数の炭化水素の割合（ＣＢ）との比（ＣＢ／ＣＡ）が０．４以上である、［１］に記載の金属加工油組成物用基油。
［３］ガスクロマト蒸留により得られる炭素数分布において、炭素数１２以下の炭化水素の割合（ＣＤ）が１０％以上である、［１］又は［２］に記載の金属加工油組成物用基油。 In order to solve the above problems, the present invention employs the following configuration.
[1] Metal processing that is a hydrocarbon with a flash point of 70°C or higher and a proton ratio of methyl groups of 17 to 65 when the integral value of all protons detected by 1 H-NMR analysis is 100. Base oil for oil compositions.
[2] In the carbon number distribution obtained by gas chromatographic distillation, the ratio (CB) of the ratio of the hydrocarbon with the highest carbon number (CA) to the ratio of the hydrocarbon with the second highest ratio (CB) /CA) is 0.4 or more, the base oil for a metal working oil composition according to [1].
[3] The metalworking oil composition base according to [1] or [2], wherein the proportion (CD) of hydrocarbons having 12 or less carbon atoms is 10% or more in the carbon number distribution obtained by gas chromatographic distillation. oil.
［１］引火点が７０℃以上であり、１Ｈ－ＮＭＲ分析により検出する全プロトンの積分値を１００とした際の、メチル基のプロトン比率が１７以上６５以下の炭化水素である、金属加工油組成物用基油。
［２］ガスクロマト蒸留により得られる炭素数分布において、最も割合が多い炭素数の炭化水素の割合（ＣＡ）と２番目に割合が多い炭素数の炭化水素の割合（ＣＢ）との比（ＣＢ／ＣＡ）が０．４以上である、［１］に記載の金属加工油組成物用基油。
［３］ガスクロマト蒸留により得られる炭素数分布において、炭素数１２以下の炭化水素の割合（ＣＤ）が１０％以上である、［１］又は［２］に記載の金属加工油組成物用基油。 In order to solve the above problems, the present invention employs the following configuration.
[1] Metal processing that is a hydrocarbon with a flash point of 70°C or higher and a proton ratio of methyl groups of 17 to 65 when the integral value of all protons detected by 1 H-NMR analysis is 100. Base oil for oil compositions.
[2] In the carbon number distribution obtained by gas chromatographic distillation, the ratio (CB) of the ratio of the hydrocarbon with the highest carbon number (CA) to the ratio of the hydrocarbon with the second highest ratio (CB) /CA) is 0.4 or more, the base oil for a metal working oil composition according to [1].
[3] The metalworking oil composition base according to [1] or [2], wherein the proportion (CD) of hydrocarbons having 12 or less carbon atoms is 10% or more in the carbon number distribution obtained by gas chromatographic distillation. oil.
［４］［１］～［３］のいずれか一項に記載の金属加工油組成物用基油を含有する、金属加工油組成物。
［５］金属のプレス加工に用いられる、［４］に記載の金属加工油組成物。 [4] A metal working oil composition containing the base oil for metal working oil compositions according to any one of [1] to [3].
[5] The metal working oil composition according to [4], which is used for press working of metal.
［５］金属のプレス加工に用いられる、［４］に記載の金属加工油組成物。 [4] A metal working oil composition containing the base oil for metal working oil compositions according to any one of [1] to [3].
[5] The metal working oil composition according to [4], which is used for press working of metal.
本発明によれば、加工性及び除去性が良好である金属加工油組成物用基油及び金属加工油組成物を提供することができる。
According to the present invention, it is possible to provide a base oil for a metal working oil composition and a metal working oil composition that have good processability and removability.
（金属加工油組成物用基油）
本実施形態の金属加工油組成物用基油は、金属製の被加工物の加工部位を潤滑するための金属加工油組成物の基油として用いるのに最適な基油である。 (Base oil for metal working oil composition)
The base oil for a metal working oil composition of this embodiment is a base oil that is most suitable for use as a base oil for a metal working oil composition for lubricating the processed parts of a metal workpiece.
本実施形態の金属加工油組成物用基油は、金属製の被加工物の加工部位を潤滑するための金属加工油組成物の基油として用いるのに最適な基油である。 (Base oil for metal working oil composition)
The base oil for a metal working oil composition of this embodiment is a base oil that is most suitable for use as a base oil for a metal working oil composition for lubricating the processed parts of a metal workpiece.
金属加工油組成物用基油としては、鉱油等が用いられる。
鉱油としては、原油を常圧蒸留して得られる留出油を使用することができる。また、この留出油をさらに減圧蒸留して得られる留出油を、各種の精製プロセスで精製した潤滑油留分も使用することができる。
精製プロセスとしては、水素化精製、溶剤抽出、溶剤脱ろう、水素化脱ろう、硫酸洗浄、及び白土処理等を、適宜組み合わせることができる。これらの精製プロセスを適宜の順序で組み合わせて処理することにより、鉱油を得ることができる。
また、異なる原油又は留出油を異なる精製プロセスの組合せに供することにより得られた、性状の異なる複数の精製油の混合物を用いてもよい。 Mineral oil or the like is used as the base oil for the metal working oil composition.
As the mineral oil, distillate oil obtained by atmospheric distillation of crude oil can be used. Furthermore, a lubricating oil fraction obtained by further distilling this distillate under reduced pressure and refining the distillate obtained by various refining processes can also be used.
As the purification process, hydrorefining, solvent extraction, solvent dewaxing, hydrodewaxing, sulfuric acid washing, clay treatment, and the like can be appropriately combined. Mineral oil can be obtained by combining these refining processes in an appropriate order.
Alternatively, a mixture of a plurality of refined oils with different properties obtained by subjecting different crude oils or distillate oils to a combination of different refining processes may be used.
鉱油としては、原油を常圧蒸留して得られる留出油を使用することができる。また、この留出油をさらに減圧蒸留して得られる留出油を、各種の精製プロセスで精製した潤滑油留分も使用することができる。
精製プロセスとしては、水素化精製、溶剤抽出、溶剤脱ろう、水素化脱ろう、硫酸洗浄、及び白土処理等を、適宜組み合わせることができる。これらの精製プロセスを適宜の順序で組み合わせて処理することにより、鉱油を得ることができる。
また、異なる原油又は留出油を異なる精製プロセスの組合せに供することにより得られた、性状の異なる複数の精製油の混合物を用いてもよい。 Mineral oil or the like is used as the base oil for the metal working oil composition.
As the mineral oil, distillate oil obtained by atmospheric distillation of crude oil can be used. Furthermore, a lubricating oil fraction obtained by further distilling this distillate under reduced pressure and refining the distillate obtained by various refining processes can also be used.
As the purification process, hydrorefining, solvent extraction, solvent dewaxing, hydrodewaxing, sulfuric acid washing, clay treatment, and the like can be appropriately combined. Mineral oil can be obtained by combining these refining processes in an appropriate order.
Alternatively, a mixture of a plurality of refined oils with different properties obtained by subjecting different crude oils or distillate oils to a combination of different refining processes may be used.
本実施形態の金属加工油組成物用基油は、引火点が７０℃以上であり、７５℃以上であることが好ましく、８０℃以上であることがより好ましい。引火点の上限は特に制限がないが、例えば、２００℃未満であってよく、１８０℃以下であってよく、１５０℃以下であってもよい。
The base oil for the metal working oil composition of this embodiment has a flash point of 70°C or higher, preferably 75°C or higher, and more preferably 80°C or higher. The upper limit of the flash point is not particularly limited, but may be, for example, less than 200°C, 180°C or less, or 150°C or less.
本実施形態の金属加工油組成物用基油は、引火点が７０℃以上であるため、安全性が高い。本実施形態の金属加工油組成物用基油の引火点が、上記の好ましい下限値以上であればより安全性が高まる。
The base oil for the metal working oil composition of this embodiment has a flash point of 70° C. or higher, so it is highly safe. If the flash point of the base oil for metal working oil composition of this embodiment is equal to or higher than the above-mentioned preferable lower limit, safety will be further enhanced.
本明細書において、金属加工油組成物用基油の引火点は、ＪＩＳ Ｋ２２６５－３：２００７に定めるペンスキーマルテンス密閉法によって測定される値を意味する。
As used herein, the flash point of the base oil for metalworking oil compositions means the value measured by the Pensky-Martens closed method defined in JIS K2265-3:2007.
本実施形態の金属加工油組成物用基油は、１Ｈ－ＮＭＲ分析により検出する全プロトンの積分値を１００とした際の、メチル基のプロトン比率が１７以上６５以下の炭化水素である。一実施形態における金属加工油組成物用基油は、比較的分岐の少ないイソパラフィンを主成分とする。
The base oil for the metal working oil composition of the present embodiment is a hydrocarbon having a proton ratio of methyl groups of 17 to 65 when the integral value of all protons detected by 1 H-NMR analysis is 100. The base oil for a metal working oil composition in one embodiment has isoparaffins with relatively little branching as a main component.
本実施形態の金属加工油組成物用基油は、該メチル基のプロトン比率が、６５以下であり、６０以下であることが好ましく、４５以下であることがより好ましく、３５以下であることがさらに好ましい。
一方で、本実施形態の金属加工油組成物用基油は、該メチル基のプロトン比率が、１７以上であり、２０以上であることが好ましく、２５以上であることがより好ましい。 In the base oil for a metal working oil composition of the present embodiment, the proton ratio of the methyl group is 65 or less, preferably 60 or less, more preferably 45 or less, and preferably 35 or less. More preferred.
On the other hand, in the base oil for a metal working oil composition of the present embodiment, the proton ratio of the methyl group is 17 or more, preferably 20 or more, and more preferably 25 or more.
一方で、本実施形態の金属加工油組成物用基油は、該メチル基のプロトン比率が、１７以上であり、２０以上であることが好ましく、２５以上であることがより好ましい。 In the base oil for a metal working oil composition of the present embodiment, the proton ratio of the methyl group is 65 or less, preferably 60 or less, more preferably 45 or less, and preferably 35 or less. More preferred.
On the other hand, in the base oil for a metal working oil composition of the present embodiment, the proton ratio of the methyl group is 17 or more, preferably 20 or more, and more preferably 25 or more.
金属加工油組成物用基油の該メチル基のプロトン比率が１７未満である場合、すなわち、該基油の分岐がより少ない場合、該基油の複数の分子が密に積層され、併用する添加剤が被加工材表面へ吸着しにくくなると推測される。一方で、金属加工油組成物用基油の該メチル基のプロトン比率が６５超である場合、すなわち、該基油の分岐がより多い場合、該基油の複数の分子間の隙間が少なくなり、併用する添加剤が被加工材表面へ吸着しにくくなると推測される。
金属加工油組成物用基油の該メチル基のプロトン比率が上記の好ましい数値範囲内である場合、すなわち、該基油の分岐が適度である場合、該基油の複数の分子が不揃いとなり、該基油の複数の分子間の隙間が多くなり、併用する添加剤が被加工材表面へより吸着しやすくなると推測される。
また、金属加工油組成物用基油の該メチル基のプロトン比率が上記の好ましい数値範囲内である場合、分子同士の距離が空いているため、分子間力が小さく、蒸発に必要なエネルギーが小さくなると推測される。
したがって、本実施形態の金属加工油組成物用基油の該メチル基のプロトン比率が、上記の好ましい数値範囲内であることにより、加工性及び除去性が向上する。 When the proton ratio of the methyl groups in the base oil for metalworking oil compositions is less than 17, that is, when the base oil has less branching, multiple molecules of the base oil are densely stacked, and the additives used in combination. It is assumed that this makes it difficult for the agent to adsorb onto the surface of the workpiece. On the other hand, when the proton ratio of the methyl group in the base oil for metal working oil composition is more than 65, that is, when the base oil has more branches, the gaps between multiple molecules of the base oil are reduced. It is assumed that the additives used in combination become difficult to adsorb onto the surface of the workpiece.
When the proton ratio of the methyl group of the base oil for metal working oil composition is within the above-mentioned preferable numerical range, that is, when the branching of the base oil is moderate, a plurality of molecules of the base oil become irregular, It is presumed that the gaps between the molecules of the base oil increase, and the additive used in combination becomes more likely to be adsorbed onto the surface of the workpiece.
In addition, when the proton ratio of the methyl groups in the base oil for metalworking oil compositions is within the above preferred numerical range, the distance between the molecules is large, so the intermolecular force is small, and the energy required for evaporation is reduced. It is assumed that it will become smaller.
Therefore, when the proton ratio of the methyl group in the base oil for the metal working oil composition of this embodiment is within the above-mentioned preferred numerical range, processability and removability are improved.
金属加工油組成物用基油の該メチル基のプロトン比率が上記の好ましい数値範囲内である場合、すなわち、該基油の分岐が適度である場合、該基油の複数の分子が不揃いとなり、該基油の複数の分子間の隙間が多くなり、併用する添加剤が被加工材表面へより吸着しやすくなると推測される。
また、金属加工油組成物用基油の該メチル基のプロトン比率が上記の好ましい数値範囲内である場合、分子同士の距離が空いているため、分子間力が小さく、蒸発に必要なエネルギーが小さくなると推測される。
したがって、本実施形態の金属加工油組成物用基油の該メチル基のプロトン比率が、上記の好ましい数値範囲内であることにより、加工性及び除去性が向上する。 When the proton ratio of the methyl groups in the base oil for metalworking oil compositions is less than 17, that is, when the base oil has less branching, multiple molecules of the base oil are densely stacked, and the additives used in combination. It is assumed that this makes it difficult for the agent to adsorb onto the surface of the workpiece. On the other hand, when the proton ratio of the methyl group in the base oil for metal working oil composition is more than 65, that is, when the base oil has more branches, the gaps between multiple molecules of the base oil are reduced. It is assumed that the additives used in combination become difficult to adsorb onto the surface of the workpiece.
When the proton ratio of the methyl group of the base oil for metal working oil composition is within the above-mentioned preferable numerical range, that is, when the branching of the base oil is moderate, a plurality of molecules of the base oil become irregular, It is presumed that the gaps between the molecules of the base oil increase, and the additive used in combination becomes more likely to be adsorbed onto the surface of the workpiece.
In addition, when the proton ratio of the methyl groups in the base oil for metalworking oil compositions is within the above preferred numerical range, the distance between the molecules is large, so the intermolecular force is small, and the energy required for evaporation is reduced. It is assumed that it will become smaller.
Therefore, when the proton ratio of the methyl group in the base oil for the metal working oil composition of this embodiment is within the above-mentioned preferred numerical range, processability and removability are improved.
例えば、本実施形態の金属加工油組成物用基油は、該メチル基のプロトン比率が、２０以上６０以下であることが好ましく、２０以上４５以下であることがより好ましく、２５以上３５以下であることがさらに好ましい。
For example, in the base oil for a metal working oil composition of the present embodiment, the proton ratio of the methyl group is preferably 20 or more and 60 or less, more preferably 20 or more and 45 or less, and 25 or more and 35 or less. It is even more preferable that there be.
１Ｈ－ＮＭＲ測定の際の測定装置、及び、測定条件は以下の通りである。
使用装置：ブルカー社製、ＡＶＡＮＣＥ ＩＩＩ ＨＤ－ｃｒｙｏ６００型ＮＭＲ
１Ｈ共鳴周波数：６００．１８ＭＨｚ
溶媒：ＣＤＣｌ３
濃度：約５０ｍｇ／ｍＬ
測定法：１Ｈ ノンデカップリング法
パルス幅：３０°パルス
待ち時間：５ｓｅｃ
化学シフト標準：ＣＤＣｌ３中のＣＨＣｌ３（７．２８ｐｐｍ） The measurement device and measurement conditions for 1 H-NMR measurement are as follows.
Equipment used: Bruker, AVANCE III HD-cryo600 type NMR
1H resonance frequency: 600.18MHz
Solvent: CDCl3
Concentration: Approximately 50mg/mL
Measurement method: 1H non-decoupling method Pulse width: 30° pulse Waiting time: 5 sec
Chemical shift standard: CHCl3 in CDCl3 (7.28 ppm)
使用装置：ブルカー社製、ＡＶＡＮＣＥ ＩＩＩ ＨＤ－ｃｒｙｏ６００型ＮＭＲ
１Ｈ共鳴周波数：６００．１８ＭＨｚ
溶媒：ＣＤＣｌ３
濃度：約５０ｍｇ／ｍＬ
測定法：１Ｈ ノンデカップリング法
パルス幅：３０°パルス
待ち時間：５ｓｅｃ
化学シフト標準：ＣＤＣｌ３中のＣＨＣｌ３（７．２８ｐｐｍ） The measurement device and measurement conditions for 1 H-NMR measurement are as follows.
Equipment used: Bruker, AVANCE III HD-cryo600 type NMR
1H resonance frequency: 600.18MHz
Solvent: CDCl3
Concentration: Approximately 50mg/mL
Measurement method: 1H non-decoupling method Pulse width: 30° pulse Waiting time: 5 sec
Chemical shift standard: CHCl3 in CDCl3 (7.28 ppm)
本実施形態の金属加工油組成物用基油が鉱油の場合、本実施形態の金属加工油組成物用基油における該メチル基のプロトン比率は、原油の選択、並びに、原油を常圧蒸留および／または減圧蒸留して得られる留分の溶剤脱れき、溶剤抽出、水素化分解、溶剤脱ろう、接触脱ろう、水素化精製、硫酸洗浄、白土処理等の精製における精製条件（温度、圧力、触媒等）を適切に管理することで制御することができる。
本実施形態の金属加工油組成物用基油がＧＴＬ又はＣＴＬの場合、本実施形態の金属加工油組成物用基油における該メチル基のプロトン比率は、ＦＴ反応の反応条件（温度、圧力、触媒等）を適切に管理することで制御することができる。 When the base oil for the metal working oil composition of this embodiment is a mineral oil, the proton ratio of the methyl group in the base oil for the metal working oil composition of this embodiment is determined by the selection of crude oil and by atmospheric distillation and distillation of the crude oil. Refining conditions (temperature, pressure, This can be controlled by appropriately managing catalysts, etc.).
When the base oil for the metal working oil composition of this embodiment is GTL or CTL, the proton ratio of the methyl group in the base oil for the metal working oil composition of this embodiment is determined by the reaction conditions of the FT reaction (temperature, pressure, This can be controlled by appropriately managing catalysts, etc.).
本実施形態の金属加工油組成物用基油がＧＴＬ又はＣＴＬの場合、本実施形態の金属加工油組成物用基油における該メチル基のプロトン比率は、ＦＴ反応の反応条件（温度、圧力、触媒等）を適切に管理することで制御することができる。 When the base oil for the metal working oil composition of this embodiment is a mineral oil, the proton ratio of the methyl group in the base oil for the metal working oil composition of this embodiment is determined by the selection of crude oil and by atmospheric distillation and distillation of the crude oil. Refining conditions (temperature, pressure, This can be controlled by appropriately managing catalysts, etc.).
When the base oil for the metal working oil composition of this embodiment is GTL or CTL, the proton ratio of the methyl group in the base oil for the metal working oil composition of this embodiment is determined by the reaction conditions of the FT reaction (temperature, pressure, This can be controlled by appropriately managing catalysts, etc.).
本実施形態の金属加工油組成物用基油は、炭素数が６～２０の炭化水素であることが好ましく、炭素数が６～１８の炭化水素であることがより好ましい。
また、本実施形態の金属加工油組成物用基油は、炭素数が異なる炭化水素の混合物であることが好ましい。
本発明における炭化水素の炭素数は、後述するガスクロマト蒸留により得られる炭素数を意味する。 The base oil for the metal working oil composition of the present embodiment is preferably a hydrocarbon having 6 to 20 carbon atoms, more preferably a hydrocarbon having 6 to 18 carbon atoms.
Moreover, it is preferable that the base oil for the metal working oil composition of this embodiment is a mixture of hydrocarbons having different carbon numbers.
The number of carbon atoms in the hydrocarbon in the present invention means the number of carbon atoms obtained by gas chromatographic distillation as described below.
また、本実施形態の金属加工油組成物用基油は、炭素数が異なる炭化水素の混合物であることが好ましい。
本発明における炭化水素の炭素数は、後述するガスクロマト蒸留により得られる炭素数を意味する。 The base oil for the metal working oil composition of the present embodiment is preferably a hydrocarbon having 6 to 20 carbon atoms, more preferably a hydrocarbon having 6 to 18 carbon atoms.
Moreover, it is preferable that the base oil for the metal working oil composition of this embodiment is a mixture of hydrocarbons having different carbon numbers.
The number of carbon atoms in the hydrocarbon in the present invention means the number of carbon atoms obtained by gas chromatographic distillation as described below.
本実施形態の金属加工油組成物用基油は、炭素数分布において、最も割合が多い炭素数の炭化水素の割合（ＣＡ）と２番目に割合が多い炭素数の炭化水素の割合（ＣＢ）との比（ＣＢ／ＣＡ）が０．４以上であることが好ましく、０．５以上であることがより好ましく、０．６以上であることがさらに好ましく、０．７以上であることが特に好ましい。
上記（ＣＢ／ＣＡ）が上記の好ましい値以上であることにより、炭素数が異なる炭化水素が多くなるため、除去性がより向上する。 The base oil for the metal working oil composition of this embodiment has a carbon number distribution including a ratio of the hydrocarbon having the highest carbon number (CA) and a ratio of the hydrocarbon having the second highest carbon number (CB). The ratio (CB/CA) is preferably 0.4 or more, more preferably 0.5 or more, even more preferably 0.6 or more, particularly 0.7 or more. preferable.
When the above (CB/CA) is at least the above preferable value, the number of hydrocarbons having different carbon numbers increases, so that the removability is further improved.
上記（ＣＢ／ＣＡ）が上記の好ましい値以上であることにより、炭素数が異なる炭化水素が多くなるため、除去性がより向上する。 The base oil for the metal working oil composition of this embodiment has a carbon number distribution including a ratio of the hydrocarbon having the highest carbon number (CA) and a ratio of the hydrocarbon having the second highest carbon number (CB). The ratio (CB/CA) is preferably 0.4 or more, more preferably 0.5 or more, even more preferably 0.6 or more, particularly 0.7 or more. preferable.
When the above (CB/CA) is at least the above preferable value, the number of hydrocarbons having different carbon numbers increases, so that the removability is further improved.
本実施形態の金属加工油組成物用基油は、炭素数１２以下の炭化水素の割合（ＣＤ）が１０％以上であることが好ましく、１５％以上であることがより好ましく、２５％以上であることがさらに好ましく、４０％以上であることが特に好ましい。
炭素数１２以下の炭化水素の割合（ＣＤ）が上記の好ましい値以上であることにより、除去性がより向上する。 In the base oil for the metal working oil composition of the present embodiment, the proportion (CD) of hydrocarbons having 12 or less carbon atoms is preferably 10% or more, more preferably 15% or more, and 25% or more. It is more preferable that it be at least 40%, particularly preferably 40% or more.
When the proportion (CD) of hydrocarbons having 12 or less carbon atoms is at least the above-mentioned preferred value, the removability is further improved.
炭素数１２以下の炭化水素の割合（ＣＤ）が上記の好ましい値以上であることにより、除去性がより向上する。 In the base oil for the metal working oil composition of the present embodiment, the proportion (CD) of hydrocarbons having 12 or less carbon atoms is preferably 10% or more, more preferably 15% or more, and 25% or more. It is more preferable that it be at least 40%, particularly preferably 40% or more.
When the proportion (CD) of hydrocarbons having 12 or less carbon atoms is at least the above-mentioned preferred value, the removability is further improved.
本実施形態の金属加工油組成物用基油における炭素数分布は、上述した鉱油、ＧＴＬ、ＣＴＬを製造する際の圧力、温度、還流比、又は蒸留塔の段数等を精密に調整しながら蒸留することで制御することができる。
The carbon number distribution in the base oil for the metalworking oil composition of this embodiment is determined by distillation while precisely adjusting the pressure, temperature, reflux ratio, or the number of stages of the distillation column when producing the mineral oil, GTL, and CTL mentioned above. It can be controlled by
［炭素数分布の測定］
ガスクロマト蒸留の測定条件は以下の通りである。
Ｍｏｄｅｌ：島津製作所社製 ＧＣ－２０３０
Ｃｏｌｕｍｎ： ＵＡ－１ ＭＳ／ＨＴ （３０ｍ×０．２５ｍｍＩ．Ｄ．×０．１０μｍ）
キャリアガス：ヘリウム ２００ｋＰａ
Ｄｅｔｅｃｔｏｒ：ＦＩＤ
Ｄｅｔ．Ｔｅｍｐ．：３５０℃
Ｏｖｅｎ Ｔｅｍｐ．：５０℃（２ｍｉｎ）～１７０℃
Ｔｅｍｐ．Ｒａｔｅ：６℃／ｍｉｎ
Ｉｎｊ．Ｖｏｌ：１μＬトルエン溶液 [Measurement of carbon number distribution]
The measurement conditions for gas chromatographic distillation are as follows.
Model: Shimadzu Corporation GC-2030
Column: UA-1 MS/HT (30m x 0.25mm I.D. x 0.10μm)
Carrier gas: helium 200kPa
Detector: FID
Det. Temp. :350℃
Oven Temp. :50℃(2min)～170℃
Temp. Rate: 6℃/min
Inj. Vol: 1μL toluene solution
ガスクロマト蒸留の測定条件は以下の通りである。
Ｍｏｄｅｌ：島津製作所社製 ＧＣ－２０３０
Ｃｏｌｕｍｎ： ＵＡ－１ ＭＳ／ＨＴ （３０ｍ×０．２５ｍｍＩ．Ｄ．×０．１０μｍ）
キャリアガス：ヘリウム ２００ｋＰａ
Ｄｅｔｅｃｔｏｒ：ＦＩＤ
Ｄｅｔ．Ｔｅｍｐ．：３５０℃
Ｏｖｅｎ Ｔｅｍｐ．：５０℃（２ｍｉｎ）～１７０℃
Ｔｅｍｐ．Ｒａｔｅ：６℃／ｍｉｎ
Ｉｎｊ．Ｖｏｌ：１μＬトルエン溶液 [Measurement of carbon number distribution]
The measurement conditions for gas chromatographic distillation are as follows.
Model: Shimadzu Corporation GC-2030
Column: UA-1 MS/HT (30m x 0.25mm I.D. x 0.10μm)
Carrier gas: helium 200kPa
Detector: FID
Det. Temp. :350℃
Oven Temp. :50℃(2min)～170℃
Temp. Rate: 6℃/min
Inj. Vol: 1μL toluene solution
本実施形態の金属加工油組成物用基油は、初留点が１７０℃以上であることが好ましく、１８０℃以上であることがより好ましく、１９０℃以上であることがさらに好ましい。
The base oil for the metalworking oil composition of this embodiment preferably has an initial boiling point of 170°C or higher, more preferably 180°C or higher, and even more preferably 190°C or higher.
本実施形態の金属加工油組成物用基油は、終点が３００℃以下であることが好ましく、２７０℃以下であることがより好ましく、２４０℃以下であることがさらに好ましい。
The base oil for the metal working oil composition of this embodiment preferably has an end point of 300°C or lower, more preferably 270°C or lower, and even more preferably 240°C or lower.
本明細書において、金属加工油組成物用基油の初留点及び終点は、ＪＩＳ Ｋ２２５４：２０１８に定める常圧法によって測定される値を意味する。
In this specification, the initial boiling point and end point of the base oil for metal working oil compositions mean values measured by the normal pressure method defined in JIS K2254:2018.
本実施形態の金属加工油組成物用基油の初留点が上記の好ましい値以上であることにより、室温での揮発をより十分に防止し、加工性をより向上させることができる。
When the initial boiling point of the base oil for the metal working oil composition of this embodiment is equal to or higher than the above-mentioned preferred value, volatilization at room temperature can be more fully prevented and workability can be further improved.
本実施形態の金属加工油組成物用基油の終点が上記の好ましい値以下であることにより、除去性がより向上する。
When the end point of the base oil for metal working oil composition of this embodiment is below the above-mentioned preferred value, removability is further improved.
本実施形態の金属加工油組成物用基油の終点と初留点との差（終点－初留点）が、２３℃以上であることが好ましく、３０℃以上であることがより好ましく、３５℃以上であることがさらに好ましい。
The difference between the end point and the initial boiling point (end point - initial boiling point) of the base oil for the metalworking oil composition of this embodiment is preferably 23°C or higher, more preferably 30°C or higher, and 35°C or higher. It is more preferable that the temperature is at least ℃.
本実施形態の金属加工油組成物用基油の終点と初留点との差が、上記の好ましい値以上である場合、すなわち、炭素数が異なる炭化水素が多いほど、加工性がより向上する。
When the difference between the end point and the initial boiling point of the base oil for the metal working oil composition of this embodiment is equal to or greater than the above-mentioned preferred value, that is, the more hydrocarbons with different carbon numbers are present, the more the processability improves. .
一実施形態の金属加工油組成物用基油は、引火点が７０℃以上であり、好ましくは７５℃以上であり、より好ましくは８０℃以上であり、
１Ｈ－ＮＭＲ分析により検出する全プロトンの積分値を１００とした際の、メチル基のプロトン比率が６５以下であり、好ましくは６０以下であり、より好ましくは４５以下であり、さらに好ましくは３５以下であり、
１Ｈ－ＮＭＲ分析により検出する全プロトンの積分値を１００とした際の、メチル基のプロトン比率が１７以上であり、好ましくは２０以上であり、より好ましくは２５以上であり、
ガスクロマト蒸留により得られる炭素数分布において、最も割合が多い炭素数の炭化水素の割合（ＣＡ）と２番目に割合が多い炭素数の炭化水素の割合（ＣＢ）との比（ＣＢ／ＣＡ）が、好ましくは０．４以上であり、より好ましくは０．５以上であり、さらに好ましくは０．６以上であり、特に好ましくは０．７以上であり、
炭素数１２以下の炭化水素の割合（ＣＤ）が、好ましくは１０％以上であり、より好ましくは１５％以上であり、さらに好ましくは２５％以上であり、特に好ましくは４０％以上であり、
好ましくは炭素数が６～２０の炭化水素の混合物、より好ましくは炭素数が６～１８の炭化水素の混合物である。
また該金属加工油組成物用基油は、加工性をより向上させる観点から、初留点が１７０℃以上であることが好ましく、１８０℃以上であることがより好ましく、１９０℃以上であることがさらに好ましく、
終点が３００℃以下であることが好ましく、２７０℃以下であることがより好ましく、２４０℃以下であることがさらに好ましく、
終点と初留点との差（終点－初留点）が、２３℃以上であることが好ましく、３０℃以上であることがより好ましく、３５℃以上であることがさらに好ましい。 The base oil for a metal working oil composition of one embodiment has a flash point of 70°C or higher, preferably 75°C or higher, more preferably 80°C or higher,
The proton ratio of the methyl group is 65 or less, preferably 60 or less, more preferably 45 or less, even more preferably 35, when the integral value of all protons detected by 1 H-NMR analysis is 100. The following is
The proton ratio of the methyl group is 17 or more, preferably 20 or more, more preferably 25 or more, when the integral value of all protons detected by 1 H-NMR analysis is 100,
In the carbon number distribution obtained by gas chromatographic distillation, the ratio of the ratio of the hydrocarbon with the highest carbon number (CA) to the ratio of the hydrocarbon with the second highest carbon number (CB) (CB/CA) is preferably 0.4 or more, more preferably 0.5 or more, even more preferably 0.6 or more, particularly preferably 0.7 or more,
The proportion (CD) of hydrocarbons having 12 or less carbon atoms is preferably 10% or more, more preferably 15% or more, even more preferably 25% or more, particularly preferably 40% or more,
Preferably it is a mixture of hydrocarbons having 6 to 20 carbon atoms, more preferably a mixture of hydrocarbons having 6 to 18 carbon atoms.
In addition, from the viewpoint of further improving processability, the base oil for the metal working oil composition preferably has an initial boiling point of 170°C or higher, more preferably 180°C or higher, and 190°C or higher. is more preferable,
The end point is preferably 300°C or lower, more preferably 270°C or lower, even more preferably 240°C or lower,
The difference between the end point and the initial boiling point (end point - initial boiling point) is preferably 23°C or higher, more preferably 30°C or higher, even more preferably 35°C or higher.
１Ｈ－ＮＭＲ分析により検出する全プロトンの積分値を１００とした際の、メチル基のプロトン比率が６５以下であり、好ましくは６０以下であり、より好ましくは４５以下であり、さらに好ましくは３５以下であり、
１Ｈ－ＮＭＲ分析により検出する全プロトンの積分値を１００とした際の、メチル基のプロトン比率が１７以上であり、好ましくは２０以上であり、より好ましくは２５以上であり、
ガスクロマト蒸留により得られる炭素数分布において、最も割合が多い炭素数の炭化水素の割合（ＣＡ）と２番目に割合が多い炭素数の炭化水素の割合（ＣＢ）との比（ＣＢ／ＣＡ）が、好ましくは０．４以上であり、より好ましくは０．５以上であり、さらに好ましくは０．６以上であり、特に好ましくは０．７以上であり、
炭素数１２以下の炭化水素の割合（ＣＤ）が、好ましくは１０％以上であり、より好ましくは１５％以上であり、さらに好ましくは２５％以上であり、特に好ましくは４０％以上であり、
好ましくは炭素数が６～２０の炭化水素の混合物、より好ましくは炭素数が６～１８の炭化水素の混合物である。
また該金属加工油組成物用基油は、加工性をより向上させる観点から、初留点が１７０℃以上であることが好ましく、１８０℃以上であることがより好ましく、１９０℃以上であることがさらに好ましく、
終点が３００℃以下であることが好ましく、２７０℃以下であることがより好ましく、２４０℃以下であることがさらに好ましく、
終点と初留点との差（終点－初留点）が、２３℃以上であることが好ましく、３０℃以上であることがより好ましく、３５℃以上であることがさらに好ましい。 The base oil for a metal working oil composition of one embodiment has a flash point of 70°C or higher, preferably 75°C or higher, more preferably 80°C or higher,
The proton ratio of the methyl group is 65 or less, preferably 60 or less, more preferably 45 or less, even more preferably 35, when the integral value of all protons detected by 1 H-NMR analysis is 100. The following is
The proton ratio of the methyl group is 17 or more, preferably 20 or more, more preferably 25 or more, when the integral value of all protons detected by 1 H-NMR analysis is 100,
In the carbon number distribution obtained by gas chromatographic distillation, the ratio of the ratio of the hydrocarbon with the highest carbon number (CA) to the ratio of the hydrocarbon with the second highest carbon number (CB) (CB/CA) is preferably 0.4 or more, more preferably 0.5 or more, even more preferably 0.6 or more, particularly preferably 0.7 or more,
The proportion (CD) of hydrocarbons having 12 or less carbon atoms is preferably 10% or more, more preferably 15% or more, even more preferably 25% or more, particularly preferably 40% or more,
Preferably it is a mixture of hydrocarbons having 6 to 20 carbon atoms, more preferably a mixture of hydrocarbons having 6 to 18 carbon atoms.
In addition, from the viewpoint of further improving processability, the base oil for the metal working oil composition preferably has an initial boiling point of 170°C or higher, more preferably 180°C or higher, and 190°C or higher. is more preferable,
The end point is preferably 300°C or lower, more preferably 270°C or lower, even more preferably 240°C or lower,
The difference between the end point and the initial boiling point (end point - initial boiling point) is preferably 23°C or higher, more preferably 30°C or higher, even more preferably 35°C or higher.
本実施形態の金属加工油組成物用基油は、後述する金属加工油組成物の基油として用いるのに適する基油である。本実施形態の金属加工油組成物用基油のみを金属加工に用いてもよい。加工方法としては、冷間、温間、又は、熱間圧延、プレス、打ち抜き、しごき、絞り、引き抜き、鍛造、極微量切削（ＭＱＬ）を含む切削および研削等の金属加工等が挙げられる。該金属としては、アルミニウム、マグネシウム及びこれらの合金のほか、銅、鉄、クロム、ニッケル、亜鉛、スズ、チタン等の遷移金属及びこれらの合金、電磁鋼、又はステンレス等を挙げることができる。
The base oil for a metal working oil composition of this embodiment is a base oil suitable for use as a base oil for a metal working oil composition described below. Only the base oil for metal working oil composition of this embodiment may be used for metal working. Examples of processing methods include metal processing such as cold, warm, or hot rolling, pressing, punching, ironing, drawing, drawing, forging, and cutting and grinding including micro-cutting (MQL). Examples of the metal include aluminum, magnesium, and alloys thereof, transition metals such as copper, iron, chromium, nickel, zinc, tin, titanium, and alloys thereof, electromagnetic steel, stainless steel, and the like.
本実施形態の金属加工油組成物用基油は、４０℃における動粘度が５ｍｍ２／ｓ以下であることが好ましく、３ｍｍ２／ｓ以下であることがより好ましく、２ｍｍ２／ｓ以下であることがさらに好ましい。
本発明における動粘度は、ＪＩＳ Ｋ２２８３：２０００に準拠して測定した値とする。 The base oil for metal working oil composition of this embodiment preferably has a kinematic viscosity at 40°C of 5 mm 2 /s or less, more preferably 3 mm 2 /s or less, and 2 mm 2 /s or less. It is even more preferable.
The kinematic viscosity in the present invention is a value measured in accordance with JIS K2283:2000.
本発明における動粘度は、ＪＩＳ Ｋ２２８３：２０００に準拠して測定した値とする。 The base oil for metal working oil composition of this embodiment preferably has a kinematic viscosity at 40°C of 5 mm 2 /s or less, more preferably 3 mm 2 /s or less, and 2 mm 2 /s or less. It is even more preferable.
The kinematic viscosity in the present invention is a value measured in accordance with JIS K2283:2000.
（金属加工油組成物）
本実施形態の金属加工油組成物は、上述した金属加工油組成物用基油と、任意成分とを含有する金属加工油組成物である。
該任意成分としては、上述した金属加工油組成物用基油以外の基油、油性剤、酸化防止剤、防錆剤、腐食防止剤、さび止め剤、消泡剤、金属系清浄剤、摩耗防止剤、粘度指数向上剤、流動点降下剤、ミスト防止剤、及び、解乳化剤等が挙げられる。 (Metalworking oil composition)
The metal working oil composition of this embodiment is a metal working oil composition containing the above-mentioned base oil for metal working oil compositions and optional components.
The optional components include base oils other than the above-mentioned base oils for metal working oil compositions, oiliness agents, antioxidants, rust preventive agents, corrosion inhibitors, rust inhibitors, antifoaming agents, metal cleaning agents, and abrasion agents. Examples include inhibitors, viscosity index improvers, pour point depressants, mist inhibitors, and demulsifiers.
本実施形態の金属加工油組成物は、上述した金属加工油組成物用基油と、任意成分とを含有する金属加工油組成物である。
該任意成分としては、上述した金属加工油組成物用基油以外の基油、油性剤、酸化防止剤、防錆剤、腐食防止剤、さび止め剤、消泡剤、金属系清浄剤、摩耗防止剤、粘度指数向上剤、流動点降下剤、ミスト防止剤、及び、解乳化剤等が挙げられる。 (Metalworking oil composition)
The metal working oil composition of this embodiment is a metal working oil composition containing the above-mentioned base oil for metal working oil compositions and optional components.
The optional components include base oils other than the above-mentioned base oils for metal working oil compositions, oiliness agents, antioxidants, rust preventive agents, corrosion inhibitors, rust inhibitors, antifoaming agents, metal cleaning agents, and abrasion agents. Examples include inhibitors, viscosity index improvers, pour point depressants, mist inhibitors, and demulsifiers.
≪基油≫
上述した金属加工油組成物用基油以外の基油として、具体的には、合成油、並びに上述した金属加工油組成物用基油に該当しない鉱油等が挙げられる。 ≪Base oil≫
Specific examples of base oils other than the above-mentioned base oils for metal-working oil compositions include synthetic oils and mineral oils that do not correspond to the above-mentioned base oils for metal-working oil compositions.
上述した金属加工油組成物用基油以外の基油として、具体的には、合成油、並びに上述した金属加工油組成物用基油に該当しない鉱油等が挙げられる。 ≪Base oil≫
Specific examples of base oils other than the above-mentioned base oils for metal-working oil compositions include synthetic oils and mineral oils that do not correspond to the above-mentioned base oils for metal-working oil compositions.
合成油としては、例えば、ポリ－α－オレフィン等のポリオレフィン、ジエステル及びポリオールエステル等のエステル基油、ポリアルキレングリコール、アルキルベンゼン、及びアルキルナフタレン等が挙げられる。
Examples of synthetic oils include polyolefins such as poly-α-olefins, ester base oils such as diesters and polyol esters, polyalkylene glycols, alkylbenzenes, and alkylnaphthalenes.
本実施形態の金属加工油組成物における上述した金属加工油組成物用基油の含有量は、金属加工油組成物が含有する基油の全量１００質量％に対して、９０質量％以上が好ましく、９５質量％以上がより好ましく、９８質量％以上がさらに好ましく、１００質量％が特に好ましい。
すなわち、一実施形態の金属加工油組成物において、上述した金属加工油組成物用基油以外の基油の含有量の上限値は１０質量％以下が好ましく、５質量％以下がより好ましく、２質量％以下がさらに好ましい。 The content of the above-mentioned base oil for metal working oil compositions in the metal working oil composition of the present embodiment is preferably 90% by mass or more based on 100% by mass of the total amount of base oil contained in the metal working oil composition. , more preferably 95% by mass or more, further preferably 98% by mass or more, particularly preferably 100% by mass.
That is, in the metalworking oil composition of one embodiment, the upper limit of the content of base oils other than the base oil for metalworking oil compositions described above is preferably 10% by mass or less, more preferably 5% by mass or less, and 2% by mass or less. It is more preferably less than % by mass.
すなわち、一実施形態の金属加工油組成物において、上述した金属加工油組成物用基油以外の基油の含有量の上限値は１０質量％以下が好ましく、５質量％以下がより好ましく、２質量％以下がさらに好ましい。 The content of the above-mentioned base oil for metal working oil compositions in the metal working oil composition of the present embodiment is preferably 90% by mass or more based on 100% by mass of the total amount of base oil contained in the metal working oil composition. , more preferably 95% by mass or more, further preferably 98% by mass or more, particularly preferably 100% by mass.
That is, in the metalworking oil composition of one embodiment, the upper limit of the content of base oils other than the base oil for metalworking oil compositions described above is preferably 10% by mass or less, more preferably 5% by mass or less, and 2% by mass or less. It is more preferably less than % by mass.
≪油性剤≫
油性剤としては、エステル、アルコール等が挙げられる。
エステルとして、具体的には、１価アルコールと１塩基酸とから得られる炭素原子数７～２６のエステルが挙げられる。
アルコールとして、具体的には、１価アルコールが挙げられる。 ≪Oil-based agent≫
Examples of oily agents include esters and alcohols.
Specific examples of the ester include esters having 7 to 26 carbon atoms obtained from a monohydric alcohol and a monobasic acid.
Specific examples of the alcohol include monohydric alcohols.
油性剤としては、エステル、アルコール等が挙げられる。
エステルとして、具体的には、１価アルコールと１塩基酸とから得られる炭素原子数７～２６のエステルが挙げられる。
アルコールとして、具体的には、１価アルコールが挙げられる。 ≪Oil-based agent≫
Examples of oily agents include esters and alcohols.
Specific examples of the ester include esters having 7 to 26 carbon atoms obtained from a monohydric alcohol and a monobasic acid.
Specific examples of the alcohol include monohydric alcohols.
金属加工油組成物が油性剤を含有する場合、その含有量は金属加工油組成物全量に対して、例えば、０．５～１０質量％である。油性剤は、１種単独で用いてもよく、複数の油性剤を混合して用いてもよい。
When the metal working oil composition contains an oily agent, the content thereof is, for example, 0.5 to 10% by mass based on the total amount of the metal working oil composition. One type of oily agent may be used alone, or a plurality of oily agents may be used in combination.
≪酸化防止剤≫
酸化防止剤としては、例えば、２，６－ジ－ｔ－ブチルフェノール、２，６－ジ－ｔ－ブチル－ｐ－クレゾール等のフェノール系化合物；ジフェニルアミン、ジアルキルジフェニルアミン、フェニル－α－ナフチルアミン、ｐ－アルキルフェニル－α－ナフチルアミン等のアミン系化合物等が挙げられる。金属加工油組成物が酸化防止剤を含有する場合、その含有量は金属加工油組成物全量に対して、例えば、０．５～１０質量％である。酸化防止剤は、１種単独で用いてもよく、複数の酸化防止剤を混合して用いてもよい。 <<Antioxidant>>
Examples of antioxidants include phenolic compounds such as 2,6-di-t-butylphenol and 2,6-di-t-butyl-p-cresol; diphenylamine, dialkyldiphenylamine, phenyl-α-naphthylamine, p- Examples include amine compounds such as alkylphenyl-α-naphthylamine. When the metal working oil composition contains an antioxidant, the content is, for example, 0.5 to 10% by mass based on the total amount of the metal working oil composition. One type of antioxidant may be used alone, or a plurality of antioxidants may be used in combination.
酸化防止剤としては、例えば、２，６－ジ－ｔ－ブチルフェノール、２，６－ジ－ｔ－ブチル－ｐ－クレゾール等のフェノール系化合物；ジフェニルアミン、ジアルキルジフェニルアミン、フェニル－α－ナフチルアミン、ｐ－アルキルフェニル－α－ナフチルアミン等のアミン系化合物等が挙げられる。金属加工油組成物が酸化防止剤を含有する場合、その含有量は金属加工油組成物全量に対して、例えば、０．５～１０質量％である。酸化防止剤は、１種単独で用いてもよく、複数の酸化防止剤を混合して用いてもよい。 <<Antioxidant>>
Examples of antioxidants include phenolic compounds such as 2,6-di-t-butylphenol and 2,6-di-t-butyl-p-cresol; diphenylamine, dialkyldiphenylamine, phenyl-α-naphthylamine, p- Examples include amine compounds such as alkylphenyl-α-naphthylamine. When the metal working oil composition contains an antioxidant, the content is, for example, 0.5 to 10% by mass based on the total amount of the metal working oil composition. One type of antioxidant may be used alone, or a plurality of antioxidants may be used in combination.
≪腐食防止剤≫
腐食防止剤としては、例えば、ベンゾトリアゾール系化合物、トリルトリアゾール系化合物、チアジアゾール系化合物、及びイミダゾール系化合物等の公知の腐食防止剤を使用可能である。金属加工油組成物が腐食防止剤を含有する場合、その含有量は金属加工油組成物全量に対して、例えば、０．０１～１０質量％である。腐食防止剤は、１種単独で用いてもよく、複数の腐食防止剤を混合して用いてもよい。 ≪Corrosion inhibitor≫
As the corrosion inhibitor, for example, known corrosion inhibitors such as benzotriazole compounds, tolyltriazole compounds, thiadiazole compounds, and imidazole compounds can be used. When the metal working oil composition contains a corrosion inhibitor, the content is, for example, 0.01 to 10% by mass based on the total amount of the metal working oil composition. One type of corrosion inhibitor may be used alone, or a plurality of corrosion inhibitors may be used in combination.
腐食防止剤としては、例えば、ベンゾトリアゾール系化合物、トリルトリアゾール系化合物、チアジアゾール系化合物、及びイミダゾール系化合物等の公知の腐食防止剤を使用可能である。金属加工油組成物が腐食防止剤を含有する場合、その含有量は金属加工油組成物全量に対して、例えば、０．０１～１０質量％である。腐食防止剤は、１種単独で用いてもよく、複数の腐食防止剤を混合して用いてもよい。 ≪Corrosion inhibitor≫
As the corrosion inhibitor, for example, known corrosion inhibitors such as benzotriazole compounds, tolyltriazole compounds, thiadiazole compounds, and imidazole compounds can be used. When the metal working oil composition contains a corrosion inhibitor, the content is, for example, 0.01 to 10% by mass based on the total amount of the metal working oil composition. One type of corrosion inhibitor may be used alone, or a plurality of corrosion inhibitors may be used in combination.
≪さび止め剤≫
さび止め剤として、具体的には、オレイン酸などの脂肪酸の塩、ジノニルナフタレンスルホネートなどのスルホン酸塩、ソルビタンモノオレエートなどの多価アルコールの部分エステル（油性剤に該当する多価アルコールの部分エステルを除く）、アミン及びその誘導体等が挙げられる。 ≪Rust inhibitor≫
As a rust inhibitor, specifically, salts of fatty acids such as oleic acid, sulfonates such as dinonylnaphthalene sulfonate, and partial esters of polyhydric alcohols such as sorbitan monooleate (of polyhydric alcohols that fall under oily agents) are used as rust inhibitors. (excluding partial esters), amines, and derivatives thereof.
さび止め剤として、具体的には、オレイン酸などの脂肪酸の塩、ジノニルナフタレンスルホネートなどのスルホン酸塩、ソルビタンモノオレエートなどの多価アルコールの部分エステル（油性剤に該当する多価アルコールの部分エステルを除く）、アミン及びその誘導体等が挙げられる。 ≪Rust inhibitor≫
As a rust inhibitor, specifically, salts of fatty acids such as oleic acid, sulfonates such as dinonylnaphthalene sulfonate, and partial esters of polyhydric alcohols such as sorbitan monooleate (of polyhydric alcohols that fall under oily agents) are used as rust inhibitors. (excluding partial esters), amines, and derivatives thereof.
≪消泡剤≫
消泡剤としては、シリコーン系消泡剤等が挙げられる。 ≪Defoaming agent≫
Examples of antifoaming agents include silicone antifoaming agents.
消泡剤としては、シリコーン系消泡剤等が挙げられる。 ≪Defoaming agent≫
Examples of antifoaming agents include silicone antifoaming agents.
≪金属系清浄剤≫
金属系清浄剤としては、例えば、アルカリ金属又はアルカリ土類金属のスルホネート、フェネート、サリシレート等の正塩又は塩基性塩が挙げられる。金属系清浄剤は、低級脂肪酸を中和することにより、低級脂肪酸の蒸発を抑制する観点から、好ましくは、アルカリ金属又はアルカリ土類金属のスルホネート、フェネート、サリシレート等の塩基性塩である。アルカリ金属としては、好ましくはナトリウム、カリウム等が挙げられる。アルカリ土類金属としては、好ましくはマグネシウム、カルシウム、バリウム等が挙げられる。これらの金属の中では、好ましくはマグネシウム又はカルシウム、より好ましくはカルシウムである。 ≪Metal cleaning agent≫
Examples of the metal detergent include normal salts or basic salts of alkali metal or alkaline earth metal sulfonates, phenates, salicylates, and the like. The metal detergent is preferably a basic salt of an alkali metal or alkaline earth metal, such as a sulfonate, a phenate, or a salicylate, from the viewpoint of suppressing evaporation of the lower fatty acid by neutralizing the lower fatty acid. Preferred examples of the alkali metal include sodium and potassium. Preferred alkaline earth metals include magnesium, calcium, barium, and the like. Among these metals, magnesium or calcium is preferred, and calcium is more preferred.
金属系清浄剤としては、例えば、アルカリ金属又はアルカリ土類金属のスルホネート、フェネート、サリシレート等の正塩又は塩基性塩が挙げられる。金属系清浄剤は、低級脂肪酸を中和することにより、低級脂肪酸の蒸発を抑制する観点から、好ましくは、アルカリ金属又はアルカリ土類金属のスルホネート、フェネート、サリシレート等の塩基性塩である。アルカリ金属としては、好ましくはナトリウム、カリウム等が挙げられる。アルカリ土類金属としては、好ましくはマグネシウム、カルシウム、バリウム等が挙げられる。これらの金属の中では、好ましくはマグネシウム又はカルシウム、より好ましくはカルシウムである。 ≪Metal cleaning agent≫
Examples of the metal detergent include normal salts or basic salts of alkali metal or alkaline earth metal sulfonates, phenates, salicylates, and the like. The metal detergent is preferably a basic salt of an alkali metal or alkaline earth metal, such as a sulfonate, a phenate, or a salicylate, from the viewpoint of suppressing evaporation of the lower fatty acid by neutralizing the lower fatty acid. Preferred examples of the alkali metal include sodium and potassium. Preferred alkaline earth metals include magnesium, calcium, barium, and the like. Among these metals, magnesium or calcium is preferred, and calcium is more preferred.
≪摩耗防止剤≫
摩耗防止剤としては、例えば、ジチオカーバメート、亜鉛ジチオカーバメート、モリブデンジチオカーバメート、ジサルファイド類、ポリサルファイド類、硫化オレフィン類、硫化油脂類等が挙げられる。 ≪Anti-wear agent≫
Examples of anti-wear agents include dithiocarbamates, zinc dithiocarbamates, molybdenum dithiocarbamates, disulfides, polysulfides, sulfurized olefins, sulfurized oils and fats, and the like.
摩耗防止剤としては、例えば、ジチオカーバメート、亜鉛ジチオカーバメート、モリブデンジチオカーバメート、ジサルファイド類、ポリサルファイド類、硫化オレフィン類、硫化油脂類等が挙げられる。 ≪Anti-wear agent≫
Examples of anti-wear agents include dithiocarbamates, zinc dithiocarbamates, molybdenum dithiocarbamates, disulfides, polysulfides, sulfurized olefins, sulfurized oils and fats, and the like.
≪粘度指数向上剤≫
粘度指数向上剤としては、例えば、非分散型又は分散型ポリ（メタ）アクリレート系粘度指数向上剤、非分散型又は分散型オレフィン－（メタ）アクリレート共重合体系粘度指数向上剤、スチレン－無水マレイン酸エステル共重合体系粘度指数向上剤、及びこれらの混合物等が挙げられる。 ≪Viscosity index improver≫
Examples of the viscosity index improver include non-dispersed or dispersed poly(meth)acrylate-based viscosity index improvers, non-dispersed or dispersed olefin-(meth)acrylate copolymer-based viscosity index improvers, and styrene-maleic anhydride. Examples include acid ester copolymer-based viscosity index improvers, mixtures thereof, and the like.
粘度指数向上剤としては、例えば、非分散型又は分散型ポリ（メタ）アクリレート系粘度指数向上剤、非分散型又は分散型オレフィン－（メタ）アクリレート共重合体系粘度指数向上剤、スチレン－無水マレイン酸エステル共重合体系粘度指数向上剤、及びこれらの混合物等が挙げられる。 ≪Viscosity index improver≫
Examples of the viscosity index improver include non-dispersed or dispersed poly(meth)acrylate-based viscosity index improvers, non-dispersed or dispersed olefin-(meth)acrylate copolymer-based viscosity index improvers, and styrene-maleic anhydride. Examples include acid ester copolymer-based viscosity index improvers, mixtures thereof, and the like.
≪流動点降下剤≫
流動点降下剤としては、例えば、ポリメタクリレート系のポリマー等が挙げられる。 ≪Pour point depressant≫
Examples of pour point depressants include polymethacrylate polymers and the like.
流動点降下剤としては、例えば、ポリメタクリレート系のポリマー等が挙げられる。 ≪Pour point depressant≫
Examples of pour point depressants include polymethacrylate polymers and the like.
≪ミスト防止剤≫
ミスト防止剤としては、例えば、エチレン－プロピレン共重合体、ポリメタクリレート、ポリイソブチレン、ポリブテンなどが挙げられる。ミスト防止剤としてのこれらの化合物の平均分子量は、通常、１万～８００万である。 ≪Mist prevention agent≫
Examples of the mist preventive agent include ethylene-propylene copolymer, polymethacrylate, polyisobutylene, and polybutene. The average molecular weight of these compounds as mist inhibitors is usually 10,000 to 8,000,000.
ミスト防止剤としては、例えば、エチレン－プロピレン共重合体、ポリメタクリレート、ポリイソブチレン、ポリブテンなどが挙げられる。ミスト防止剤としてのこれらの化合物の平均分子量は、通常、１万～８００万である。 ≪Mist prevention agent≫
Examples of the mist preventive agent include ethylene-propylene copolymer, polymethacrylate, polyisobutylene, and polybutene. The average molecular weight of these compounds as mist inhibitors is usually 10,000 to 8,000,000.
≪解乳化剤≫
解乳化剤としては、例えば、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルキルフェニルエーテル、ポリオキシエチレンアルキルナフチルエーテル等のポリアルキレングリコール系非イオン系界面活性剤等が挙げられる。 ≪Demulsifier≫
Examples of the demulsifier include polyalkylene glycol nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, and polyoxyethylene alkyl naphthyl ether.
解乳化剤としては、例えば、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルキルフェニルエーテル、ポリオキシエチレンアルキルナフチルエーテル等のポリアルキレングリコール系非イオン系界面活性剤等が挙げられる。 ≪Demulsifier≫
Examples of the demulsifier include polyalkylene glycol nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, and polyoxyethylene alkyl naphthyl ether.
本実施形態の金属加工油組成物は、金属加工の際に用いることが好ましい。加工方法としては、冷間、温間、又は、熱間圧延、プレス、打ち抜き、しごき、絞り、引き抜き、鍛造、極微量切削（ＭＱＬ）を含む切削および研削等の金属加工等が挙げられる。該金属としては、アルミニウム、マグネシウム及びこれらの合金のほか、銅、鉄、クロム、ニッケル、亜鉛、スズ、チタン等の遷移金属及びこれらの合金、電磁鋼、又はステンレス等を挙げることができる。
本実施形態の金属加工油組成物は、加工性及び除去性が良好であるため、特にアルミ、アルミ合金、及び電磁鋼のプレス加工に最適な組成物である。 The metal working oil composition of this embodiment is preferably used during metal working. Examples of processing methods include metal processing such as cold, warm, or hot rolling, pressing, punching, ironing, drawing, drawing, forging, and cutting and grinding including micro-cutting (MQL). Examples of the metal include aluminum, magnesium, and alloys thereof, transition metals such as copper, iron, chromium, nickel, zinc, tin, titanium, and alloys thereof, electromagnetic steel, stainless steel, and the like.
The metal working oil composition of this embodiment has good workability and removability, and is therefore particularly suitable for press working of aluminum, aluminum alloys, and electromagnetic steel.
本実施形態の金属加工油組成物は、加工性及び除去性が良好であるため、特にアルミ、アルミ合金、及び電磁鋼のプレス加工に最適な組成物である。 The metal working oil composition of this embodiment is preferably used during metal working. Examples of processing methods include metal processing such as cold, warm, or hot rolling, pressing, punching, ironing, drawing, drawing, forging, and cutting and grinding including micro-cutting (MQL). Examples of the metal include aluminum, magnesium, and alloys thereof, transition metals such as copper, iron, chromium, nickel, zinc, tin, titanium, and alloys thereof, electromagnetic steel, stainless steel, and the like.
The metal working oil composition of this embodiment has good workability and removability, and is therefore particularly suitable for press working of aluminum, aluminum alloys, and electromagnetic steel.
以下に実施例を用いて本発明をさらに詳しく説明するが、本発明はこれら実施例に限定されるものではない。
The present invention will be explained in more detail below using Examples, but the present invention is not limited to these Examples.
＜金属加工油組成物用基油の準備＞
表１に示す物性の基油１及び２を準備した。 <Preparation of base oil for metal working oil composition>
Base oils 1 and 2 having the physical properties shown in Table 1 were prepared.
表１に示す物性の基油１及び２を準備した。 <Preparation of base oil for metal working oil composition>
Base oils 1 and 2 having the physical properties shown in Table 1 were prepared.
［メチル基のプロトン比率の測定］
基油１及び２の１Ｈ－ＮＭＲ分析により検出する全プロトンの積分値を１００とした際のメチル基（ＣＨ３）、メチレン基（ＣＨ２）、及び、メチン基（ＣＨ）のそれぞれのプロトン比率を測定した。その結果を表１に示した。 [Measurement of proton ratio of methyl group]
Protons of each of the methyl group (CH 3 ), methylene group (CH 2 ), and methine group (CH) when the integral value of all protons detected by 1 H-NMR analysis of base oils 1 and 2 is set as 100. The ratio was measured. The results are shown in Table 1.
基油１及び２の１Ｈ－ＮＭＲ分析により検出する全プロトンの積分値を１００とした際のメチル基（ＣＨ３）、メチレン基（ＣＨ２）、及び、メチン基（ＣＨ）のそれぞれのプロトン比率を測定した。その結果を表１に示した。 [Measurement of proton ratio of methyl group]
Protons of each of the methyl group (CH 3 ), methylene group (CH 2 ), and methine group (CH) when the integral value of all protons detected by 1 H-NMR analysis of base oils 1 and 2 is set as 100. The ratio was measured. The results are shown in Table 1.
１Ｈ－ＮＭＲ測定の際の測定装置、及び、測定条件は以下の通りである。
使用装置：ブルカー社製、ＡＶＡＮＣＥ ＩＩＩ ＨＤ－ｃｒｙｏ６００型ＮＭＲ
１Ｈ共鳴周波数：６００．１８ＭＨｚ
溶媒：ＣＤＣｌ３
濃度：約５０ｍｇ／ｍＬ
測定法：１Ｈ ノンデカップリング法
パルス幅：３０°パルス
待ち時間：５ｓｅｃ
化学シフト標準：ＣＤＣｌ３中のＣＨＣｌ３（７．２８ｐｐｍ） The measurement device and measurement conditions for 1 H-NMR measurement are as follows.
Equipment used: Bruker, AVANCE III HD-cryo600 type NMR
1H resonance frequency: 600.18MHz
Solvent: CDCl3
Concentration: Approximately 50mg/mL
Measurement method: 1H non-decoupling method Pulse width: 30° pulse Waiting time: 5 sec
Chemical shift standard: CHCl3 in CDCl3 (7.28 ppm)
使用装置：ブルカー社製、ＡＶＡＮＣＥ ＩＩＩ ＨＤ－ｃｒｙｏ６００型ＮＭＲ
１Ｈ共鳴周波数：６００．１８ＭＨｚ
溶媒：ＣＤＣｌ３
濃度：約５０ｍｇ／ｍＬ
測定法：１Ｈ ノンデカップリング法
パルス幅：３０°パルス
待ち時間：５ｓｅｃ
化学シフト標準：ＣＤＣｌ３中のＣＨＣｌ３（７．２８ｐｐｍ） The measurement device and measurement conditions for 1 H-NMR measurement are as follows.
Equipment used: Bruker, AVANCE III HD-cryo600 type NMR
1H resonance frequency: 600.18MHz
Solvent: CDCl3
Concentration: Approximately 50mg/mL
Measurement method: 1H non-decoupling method Pulse width: 30° pulse Waiting time: 5 sec
Chemical shift standard: CHCl3 in CDCl3 (7.28 ppm)
［蒸留性状の測定］
ＪＩＳ Ｋ ２２５４の常圧法に準拠して基油１及び２の初留点及び終点を測定した。基油１及び２の初留点（ＩＢＰ）、終点（ＦＢＰ）、及び、終点と初留点との差（ＦＢＰ－ＩＢＰ）を表１に示した。 [Measurement of distillation properties]
The initial boiling points and end points of base oils 1 and 2 were measured in accordance with the normal pressure method of JIS K 2254. The initial boiling point (IBP), final point (FBP), and difference between the final point and the initial boiling point (FBP-IBP) of base oils 1 and 2 are shown in Table 1.
ＪＩＳ Ｋ ２２５４の常圧法に準拠して基油１及び２の初留点及び終点を測定した。基油１及び２の初留点（ＩＢＰ）、終点（ＦＢＰ）、及び、終点と初留点との差（ＦＢＰ－ＩＢＰ）を表１に示した。 [Measurement of distillation properties]
The initial boiling points and end points of base oils 1 and 2 were measured in accordance with the normal pressure method of JIS K 2254. The initial boiling point (IBP), final point (FBP), and difference between the final point and the initial boiling point (FBP-IBP) of base oils 1 and 2 are shown in Table 1.
［炭素数分布の測定］
ガスクロマト蒸留により基油１及び２の炭素数分布を測定した。
ガスクロマト蒸留の測定条件は以下の通りである。
Ｍｏｄｅｌ：島津製作所社製 ＧＣ－２０３０
Ｃｏｌｕｍｎ： ＵＡ－１ ＭＳ／ＨＴ （３０ｍ×０．２５ｍｍＩ．Ｄ．×０．１０μｍ）
キャリアガス：ヘリウム ２００ｋＰａ
Ｄｅｔｅｃｔｏｒ：ＦＩＤ
Ｄｅｔ．Ｔｅｍｐ．：３５０℃
Ｏｖｅｎ Ｔｅｍｐ．：５０℃（２ｍｉｎ）～１７０℃
Ｔｅｍｐ．Ｒａｔｅ：６℃／ｍｉｎ
Ｉｎｊ．Ｖｏｌ：１μＬトルエン溶液 [Measurement of carbon number distribution]
The carbon number distribution of base oils 1 and 2 was measured by gas chromatographic distillation.
The measurement conditions for gas chromatographic distillation are as follows.
Model: Shimadzu Corporation GC-2030
Column: UA-1 MS/HT (30m x 0.25mm I.D. x 0.10μm)
Carrier gas: helium 200kPa
Detector: FID
Det. Temp. :350℃
Oven Temp. :50℃(2min)～170℃
Temp. Rate: 6℃/min
Inj. Vol: 1μL toluene solution
ガスクロマト蒸留により基油１及び２の炭素数分布を測定した。
ガスクロマト蒸留の測定条件は以下の通りである。
Ｍｏｄｅｌ：島津製作所社製 ＧＣ－２０３０
Ｃｏｌｕｍｎ： ＵＡ－１ ＭＳ／ＨＴ （３０ｍ×０．２５ｍｍＩ．Ｄ．×０．１０μｍ）
キャリアガス：ヘリウム ２００ｋＰａ
Ｄｅｔｅｃｔｏｒ：ＦＩＤ
Ｄｅｔ．Ｔｅｍｐ．：３５０℃
Ｏｖｅｎ Ｔｅｍｐ．：５０℃（２ｍｉｎ）～１７０℃
Ｔｅｍｐ．Ｒａｔｅ：６℃／ｍｉｎ
Ｉｎｊ．Ｖｏｌ：１μＬトルエン溶液 [Measurement of carbon number distribution]
The carbon number distribution of base oils 1 and 2 was measured by gas chromatographic distillation.
The measurement conditions for gas chromatographic distillation are as follows.
Model: Shimadzu Corporation GC-2030
Column: UA-1 MS/HT (30m x 0.25mm I.D. x 0.10μm)
Carrier gas: helium 200kPa
Detector: FID
Det. Temp. :350℃
Oven Temp. :50℃(2min)～170℃
Temp. Rate: 6℃/min
Inj. Vol: 1μL toluene solution
＜金属加工油組成物の調製＞
（実施例１、比較例１）
表２に示す各成分を混合し、各例の金属加工油組成物をそれぞれ調製した。 <Preparation of metal working oil composition>
(Example 1, Comparative Example 1)
The components shown in Table 2 were mixed to prepare metal working oil compositions for each example.
（実施例１、比較例１）
表２に示す各成分を混合し、各例の金属加工油組成物をそれぞれ調製した。 <Preparation of metal working oil composition>
(Example 1, Comparative Example 1)
The components shown in Table 2 were mixed to prepare metal working oil compositions for each example.
［除去性能の評価］
質量計の上に試験皿を載置し、該試験皿の上に、各例の金属加工油組成物を０．５ｇそれぞれ均一に塗布した。塗布した各例の金属加工油組成物を１３０℃で加熱し、各例の金属加工油組成物の質量が０ｇになるまでに要した時間を計測した。その結果を表２に示した。金属加工油組成物の質量が０ｇになるまでに要した時間が短いほど除去性が良好であることを意味する。 [Evaluation of removal performance]
A test plate was placed on a mass meter, and 0.5 g of the metal working oil composition of each example was uniformly applied onto the test plate. The applied metal working oil composition of each example was heated at 130° C., and the time required until the mass of the metal working oil composition of each example became 0 g was measured. The results are shown in Table 2. The shorter the time required for the mass of the metal working oil composition to become 0 g, the better the removability.
質量計の上に試験皿を載置し、該試験皿の上に、各例の金属加工油組成物を０．５ｇそれぞれ均一に塗布した。塗布した各例の金属加工油組成物を１３０℃で加熱し、各例の金属加工油組成物の質量が０ｇになるまでに要した時間を計測した。その結果を表２に示した。金属加工油組成物の質量が０ｇになるまでに要した時間が短いほど除去性が良好であることを意味する。 [Evaluation of removal performance]
A test plate was placed on a mass meter, and 0.5 g of the metal working oil composition of each example was uniformly applied onto the test plate. The applied metal working oil composition of each example was heated at 130° C., and the time required until the mass of the metal working oil composition of each example became 0 g was measured. The results are shown in Table 2. The shorter the time required for the mass of the metal working oil composition to become 0 g, the better the removability.
［加工性能の評価］
アルミニウムの平板摺動試験を実施し、各例の金属加工油組成物の加工性を評価した。
図１は、平板摺動試験の概略を示す説明図である。図１中、試験片１はアルミニウム合金製であり、各例の金属加工油組成物に浸漬塗布してから試験に供した。この試験片１を１対の平板ブロック２ａ、２ｂで挟持し、さらに平板ブロック２ａの上面側から（図１中の矢印Ａ）所定の荷重（以下、「締付け荷重」という）を加えた。次いで、締付け荷重が加えられた試験片１を水平方向（図１中の矢印Ｂ）に引き抜いた。試験片１を引き抜く際の引抜荷重を測定し、その結果を表２に示した。試験片１を引き抜く際の引抜荷重が小さいほど、金属加工油組成物の加工性が良好であることを意味する。
試験条件の詳細は以下のとおりである。 [Evaluation of processing performance]
An aluminum flat plate sliding test was conducted to evaluate the workability of each metal working oil composition.
FIG. 1 is an explanatory diagram showing an outline of a flat plate sliding test. In FIG. 1, test piece 1 is made of aluminum alloy, and was subjected to the test after being dip-coated in the metal working oil composition of each example. This test piece 1 was held between a pair of flat blocks 2a and 2b, and a predetermined load (hereinafter referred to as "tightening load") was applied from the top side of the flat block 2a (arrow A in FIG. 1). Next, the test piece 1 to which the clamping load was applied was pulled out in the horizontal direction (arrow B in FIG. 1). The pulling load when pulling out the test piece 1 was measured, and the results are shown in Table 2. It means that the smaller the pulling load when pulling out the test piece 1, the better the workability of the metal working oil composition.
Details of the test conditions are as follows.
アルミニウムの平板摺動試験を実施し、各例の金属加工油組成物の加工性を評価した。
図１は、平板摺動試験の概略を示す説明図である。図１中、試験片１はアルミニウム合金製であり、各例の金属加工油組成物に浸漬塗布してから試験に供した。この試験片１を１対の平板ブロック２ａ、２ｂで挟持し、さらに平板ブロック２ａの上面側から（図１中の矢印Ａ）所定の荷重（以下、「締付け荷重」という）を加えた。次いで、締付け荷重が加えられた試験片１を水平方向（図１中の矢印Ｂ）に引き抜いた。試験片１を引き抜く際の引抜荷重を測定し、その結果を表２に示した。試験片１を引き抜く際の引抜荷重が小さいほど、金属加工油組成物の加工性が良好であることを意味する。
試験条件の詳細は以下のとおりである。 [Evaluation of processing performance]
An aluminum flat plate sliding test was conducted to evaluate the workability of each metal working oil composition.
FIG. 1 is an explanatory diagram showing an outline of a flat plate sliding test. In FIG. 1, test piece 1 is made of aluminum alloy, and was subjected to the test after being dip-coated in the metal working oil composition of each example. This test piece 1 was held between a pair of
Details of the test conditions are as follows.
＜試験条件＞
アルミニウム試験片：ＪＩＳ Ａ１０５０材
平板ブロック２ａ、２ｂ：ＳＫＤ－１１、３００ｍｍ（幅）×６００ｍｍ（長さ）×１０ｍｍ（厚さ）、試験片１との接触面積：１０ｍｍ×２５０ｍｍ
締付け荷重：１．５ｋＮ
引き抜き速度：１００ｍｍ／ｍｉｎ
浸漬塗布時の各例の金属加工油組成物の温度：４０℃±３℃
試験中の試験片１の温度：２５℃±３℃
平板ブロックの温度：２５℃±３℃ <Test conditions>
Aluminum test piece: JIS A1050 material Flat block 2a, 2b: SKD-11, 300 mm (width) x 600 mm (length) x 10 mm (thickness), contact area with test piece 1: 10 mm x 250 mm
Tightening load: 1.5kN
Pulling speed: 100mm/min
Temperature of metal working oil composition in each example during dip coating: 40°C ± 3°C
Temperature of test piece 1 during test: 25℃±3℃
Flat block temperature: 25℃±3℃
アルミニウム試験片：ＪＩＳ Ａ１０５０材
平板ブロック２ａ、２ｂ：ＳＫＤ－１１、３００ｍｍ（幅）×６００ｍｍ（長さ）×１０ｍｍ（厚さ）、試験片１との接触面積：１０ｍｍ×２５０ｍｍ
締付け荷重：１．５ｋＮ
引き抜き速度：１００ｍｍ／ｍｉｎ
浸漬塗布時の各例の金属加工油組成物の温度：４０℃±３℃
試験中の試験片１の温度：２５℃±３℃
平板ブロックの温度：２５℃±３℃ <Test conditions>
Aluminum test piece: JIS A1050
Tightening load: 1.5kN
Pulling speed: 100mm/min
Temperature of metal working oil composition in each example during dip coating: 40°C ± 3°C
Temperature of test piece 1 during test: 25℃±3℃
Flat block temperature: 25℃±3℃
表２に示す通り、実施例１の金属加工油組成物は、比較例１の金属加工油組成物よりも、乾燥時間が短く、最大引抜荷重が小さいことから、除去性能及び加工性能が良好であることが確認できた。
As shown in Table 2, the metal working oil composition of Example 1 had a shorter drying time and lower maximum pullout load than the metal working oil composition of Comparative Example 1, so it had better removal performance and processing performance. I was able to confirm something.
以上、本発明の好ましい実施例を説明したが、本発明はこれら実施例に限定されることはない。本発明の趣旨を逸脱しない範囲で、構成の付加、省略、置換、およびその他の変更が可能である。本発明は前述した説明によって限定されることはなく、添付のクレームの範囲によってのみ限定される。
Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other changes to the configuration are possible without departing from the spirit of the invention. The invention is not limited by the foregoing description, but only by the scope of the appended claims.
１：試験片、２ａ、２ｂ：平板ブロック
1: Test piece, 2a, 2b: Flat block
Claims (7)
- 引火点が７０℃以上であり、１Ｈ－ＮＭＲ分析により検出する全プロトンの積分値を１００とした際の、メチル基のプロトン比率が１７以上６５以下の炭化水素である、金属加工油組成物用基油。 A metal working oil composition which is a hydrocarbon having a flash point of 70° C. or higher and a proton ratio of methyl groups of 17 or more and 65 or less when the integral value of all protons detected by 1 H-NMR analysis is 100. base oil.
- ガスクロマト蒸留により得られる炭素数分布において、最も割合が多い炭素数の炭化水素の割合（ＣＡ）と２番目に割合が多い炭素数の炭化水素の割合（ＣＢ）との比（ＣＢ／ＣＡ）が０．４以上である、請求項１に記載の金属加工油組成物用基油。 In the carbon number distribution obtained by gas chromatographic distillation, the ratio of the ratio of the hydrocarbon with the highest carbon number (CA) to the ratio of the hydrocarbon with the second highest carbon number (CB) (CB/CA) The base oil for a metal working oil composition according to claim 1, wherein is 0.4 or more.
- ガスクロマト蒸留により得られる炭素数分布において、炭素数１２以下の炭化水素の割合（ＣＤ）が１０％以上である、請求項１又は２に記載の金属加工油組成物用基油。 The base oil for a metal working oil composition according to claim 1 or 2, wherein the proportion (CD) of hydrocarbons having 12 or less carbon atoms is 10% or more in the carbon number distribution obtained by gas chromatographic distillation.
- 請求項１又は２に記載の金属加工油組成物用基油を含有する、金属加工油組成物。 A metal working oil composition comprising the base oil for metal working oil compositions according to claim 1 or 2.
- 請求項３に記載の金属加工油組成物用基油を含有する、金属加工油組成物。 A metal working oil composition comprising the base oil for metal working oil compositions according to claim 3.
- 金属のプレス加工に用いられる、請求項４に記載の金属加工油組成物。 The metal working oil composition according to claim 4, which is used for press working of metal.
- 金属のプレス加工に用いられる、請求項５に記載の金属加工油組成物。 The metal working oil composition according to claim 5, which is used for press working of metal.
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| JP2022109824 | 2022-07-07 | ||
| JP2022-109824 | 2022-07-07 |
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| JPH01263194A (en) * | 1988-03-09 | 1989-10-19 | W R Grace & Co | Metal processing fluid |
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