JP6843910B2 - Base oil for metal processing - Google Patents
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- JP6843910B2 JP6843910B2 JP2019056279A JP2019056279A JP6843910B2 JP 6843910 B2 JP6843910 B2 JP 6843910B2 JP 2019056279 A JP2019056279 A JP 2019056279A JP 2019056279 A JP2019056279 A JP 2019056279A JP 6843910 B2 JP6843910 B2 JP 6843910B2
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- 229910052751 metal Inorganic materials 0.000 title claims description 57
- 239000002184 metal Substances 0.000 title claims description 57
- 238000012545 processing Methods 0.000 title claims description 57
- 239000002199 base oil Substances 0.000 title claims description 48
- 125000002947 alkylene group Chemical group 0.000 claims description 43
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 39
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 34
- 229920000570 polyether Polymers 0.000 claims description 34
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 24
- 239000003921 oil Substances 0.000 claims description 22
- 229910052783 alkali metal Inorganic materials 0.000 claims description 19
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 19
- PHZLMBHDXVLRIX-UHFFFAOYSA-M potassium lactate Chemical compound [K+].CC(O)C([O-])=O PHZLMBHDXVLRIX-UHFFFAOYSA-M 0.000 claims description 18
- 125000004432 carbon atom Chemical group C* 0.000 claims description 17
- 239000001521 potassium lactate Substances 0.000 claims description 17
- 235000011085 potassium lactate Nutrition 0.000 claims description 17
- 229960001304 potassium lactate Drugs 0.000 claims description 17
- -1 alkali metal salt Chemical class 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000004310 lactic acid Substances 0.000 claims description 12
- 235000014655 lactic acid Nutrition 0.000 claims description 12
- 238000005555 metalworking Methods 0.000 claims description 11
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims description 5
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims description 4
- 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 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 2
- ZOAIGCHJWKDIPJ-UHFFFAOYSA-M caesium acetate Chemical compound [Cs+].CC([O-])=O ZOAIGCHJWKDIPJ-UHFFFAOYSA-M 0.000 claims description 2
- JQAJIZQDRZHQLO-UHFFFAOYSA-M cesium;2-hydroxypropanoate Chemical compound [Cs+].CC(O)C([O-])=O JQAJIZQDRZHQLO-UHFFFAOYSA-M 0.000 claims description 2
- 235000011056 potassium acetate Nutrition 0.000 claims description 2
- 239000001632 sodium acetate Substances 0.000 claims description 2
- 235000017281 sodium acetate Nutrition 0.000 claims description 2
- 125000005529 alkyleneoxy group Chemical group 0.000 claims 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 60
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 38
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 22
- 235000011187 glycerol Nutrition 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 19
- 239000007864 aqueous solution Substances 0.000 description 18
- 229910052757 nitrogen Inorganic materials 0.000 description 18
- 229910001220 stainless steel Inorganic materials 0.000 description 18
- 239000010935 stainless steel Substances 0.000 description 18
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 17
- 238000006467 substitution reaction Methods 0.000 description 17
- 238000005187 foaming Methods 0.000 description 11
- KVZLHPXEUGJPAH-UHFFFAOYSA-N 2-oxidanylpropanoic acid Chemical compound CC(O)C(O)=O.CC(O)C(O)=O KVZLHPXEUGJPAH-UHFFFAOYSA-N 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 150000001340 alkali metals Chemical class 0.000 description 5
- CYDQOEWLBCCFJZ-UHFFFAOYSA-N 4-(4-fluorophenyl)oxane-4-carboxylic acid Chemical compound C=1C=C(F)C=CC=1C1(C(=O)O)CCOCC1 CYDQOEWLBCCFJZ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000010730 cutting oil Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010731 rolling oil Substances 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 2
- RBACIKXCRWGCBB-UHFFFAOYSA-N 1,2-Epoxybutane Chemical compound CCC1CO1 RBACIKXCRWGCBB-UHFFFAOYSA-N 0.000 description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 235000011054 acetic acid Nutrition 0.000 description 2
- 238000007259 addition reaction Methods 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 235000015165 citric acid Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001630 malic acid Substances 0.000 description 2
- 235000011090 malic acid Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 2
- 229920001983 poloxamer Polymers 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 239000001540 sodium lactate Substances 0.000 description 2
- 235000011088 sodium lactate Nutrition 0.000 description 2
- 229940005581 sodium lactate Drugs 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OPLCSTZDXXUYDU-UHFFFAOYSA-N 2,4-dimethyl-6-tert-butylphenol Chemical compound CC1=CC(C)=C(O)C(C(C)(C)C)=C1 OPLCSTZDXXUYDU-UHFFFAOYSA-N 0.000 description 1
- MFGOFGRYDNHJTA-UHFFFAOYSA-N 2-amino-1-(2-fluorophenyl)ethanol Chemical compound NCC(O)C1=CC=CC=C1F MFGOFGRYDNHJTA-UHFFFAOYSA-N 0.000 description 1
- 239000005069 Extreme pressure additive Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- HVUKVTHVDBJLCO-UHFFFAOYSA-N [Cs].OC(C(=O)O)C Chemical compound [Cs].OC(C(=O)O)C HVUKVTHVDBJLCO-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- HUCVOHYBFXVBRW-UHFFFAOYSA-M caesium hydroxide Inorganic materials [OH-].[Cs+] HUCVOHYBFXVBRW-UHFFFAOYSA-M 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- PWZFXELTLAQOKC-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide;tetrahydrate Chemical compound O.O.O.O.[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O PWZFXELTLAQOKC-UHFFFAOYSA-A 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- GIWKOZXJDKMGQC-UHFFFAOYSA-L lead(2+);naphthalene-2-carboxylate Chemical compound [Pb+2].C1=CC=CC2=CC(C(=O)[O-])=CC=C21.C1=CC=CC2=CC(C(=O)[O-])=CC=C21 GIWKOZXJDKMGQC-UHFFFAOYSA-L 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- ULLYHMPWFCYBEO-UHFFFAOYSA-N nonanoate;tris(2-hydroxyethyl)azanium Chemical compound OCCN(CCO)CCO.CCCCCCCCC(O)=O ULLYHMPWFCYBEO-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
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- Lubricants (AREA)
Description
本発明は、金属加工用基油に関する。 The present invention relates to a base oil for metal processing.
金属加工用基油は、切削油、圧延油、プレス油、鍛造油、アルミディスクおよびシリコンウエハの研磨・切断などの金属加工用の基油として用いられる。このような用途には、特定のポリエーテル系潤滑剤が提案されている（例えば、特許文献１）。 The base oil for metal processing is used as a base oil for metal processing such as cutting oil, rolling oil, pressing oil, forging oil, polishing and cutting of aluminum discs and silicon wafers. Specific polyether lubricants have been proposed for such applications (eg, Patent Document 1).
しかしながら、上記特許文献１の技術であっても、加工性については十分に満足できるとは言えず、さらなる向上が求められていた。本発明は、加工性に優れる金属加工用基油を提供することを目的とする。 However, even with the technique of Patent Document 1, it cannot be said that the processability is sufficiently satisfactory, and further improvement is required. An object of the present invention is to provide a base oil for metal processing having excellent workability.
本発明者らは、上記の目的を達成するべく検討を行った結果、本発明に到達した。
すなわち本発明は、下記（Ｉ）〜（ＩＩＩ）を満たすポリエーテル（Ａ）と、カルボン酸のアルカリ金属塩（Ｂ）とを含有してなる基油であって、前記カルボン酸のアルカリ金属塩（Ｂ）が乳酸ナトリウム、乳酸カリウム、乳酸セシウム、酢酸ナトリウム、酢酸カリウムおよび酢酸セシウムからなる群より選ばれる少なくとも１種であり、前記ポリエーテル（Ａ）の重量に基づいてカルボン酸のアルカリ金属塩（Ｂ）の含有量が０．０５〜５重量％である金属加工用基油（Ｘ）である。
（Ｉ）３価の脂肪族アルコール（ａ）の炭素数２〜４のアルキレンオキシド（ｓ）１８〜５４モル付加物に、炭素数２〜４のアルキレンオキシド（ｔ）を９〜３６モル付加した構造を有し、前記アルキレンオキシド（ｔ）は１，２−プロピレンオキシドである。
（ＩＩ）複数ある前記炭素数２〜４のアルキレンオキシド（ｔ）は同一である。
（ＩＩＩ）複数ある前記炭素数２〜４のアルキレンオキシド（ｓ）は、同一であっても異なっていてもよいが、同一である場合、アルキレンオキシド（ｓ）とアルキレンオキシド（ｔ）とは異なる。
The present inventors have arrived at the present invention as a result of studies for achieving the above object.
That is, the present invention is a base oil containing a polyether (A) satisfying the following (I) to (III) and an alkali metal salt (B) of a carboxylic acid, and the alkali metal salt of the carboxylic acid. (B) is at least one selected from the group consisting of sodium lactate, potassium lactate, cesium lactate, sodium acetate, potassium acetate and cesium acetate, and is an alkali metal salt of a carboxylic acid based on the weight of the polyether (A). The base oil (X) for metal processing has a content of (B) of 0.05 to 5% by weight.
(I) 9 to 36 mol of alkylene oxide (t) having 2 to 4 carbon atoms was added to 18 to 54 mol of alkylene oxide (s) having 2 to 4 carbon atoms of the trivalent aliphatic alcohol (a). structure have a, the alkylene oxide (t) is a 1,2-propylene oxide.
(II) The plurality of alkylene oxides (t) having 2 to 4 carbon atoms are the same.
(III) The plurality of alkylene oxides (s) having 2 to 4 carbon atoms may be the same or different, but when they are the same, the alkylene oxide (s) and the alkylene oxide (t) are different. ..
本発明の金属加工用基油（Ｘ）は、以下の効果を奏する。
（１）低温安定性（低温保存安定性）に優れる。
（２）低泡性（泡立ちが小）に優れる。
（３）加工性（金属加工の耐久性）に優れる。
The base oil (X) for metal processing of the present invention has the following effects.
(1) Excellent low temperature stability (low temperature storage stability).
(2) Excellent low foaming property (small foaming).
(3) Excellent workability (durability of metal processing).
＜ポリエーテル（Ａ）＞
本発明におけるポリエーテル（Ａ）は、以下の（Ｉ）〜（ＩＩＩ）を満たす。
（Ｉ）３価の脂肪族アルコール（ａ）の炭素数２〜４のアルキレンオキシド（ｓ）６〜６０モル付加物に、炭素数２〜４のアルキレンオキシド（ｔ）を９〜３６モル付加した構造を有する。
（ＩＩ）複数ある前記炭素数２〜４のアルキレンオキシド（ｔ）は同一である。
（ＩＩＩ）複数ある前記炭素数２〜４のアルキレンオキシド（ｓ）は、同一であっても異なっていてもよいが、同一である場合、アルキレンオキシド（ｓ）とアルキレンオキシド（ｔ）とは異なる。
なお、ポリエーテル（Ａ）は、アルキレンオキシド（ｓ）とアルキレンオキシド（ｔ）とがどのように重合しているかや、ポリエーテル（Ａ）におけるアルキレンオキシド（ｓ）とアルキレンオキシド（ｔ）との境目を明確に判別することは困難である。すなわち、ポリエーテル（Ａ）をその構造又は特性により直接特定することが不可能であるか、またはおよそ実際的ではないという事情（不可能・非実際的事情）が存在する。
<Polyester (A)>
The polyether (A) in the present invention satisfies the following (I) to (III).
(I) 9 to 36 mol of alkylene oxide (t) having 2 to 4 carbon atoms was added to 6 to 60 mol of alkylene oxide (s) having 2 to 4 carbon atoms of the trivalent aliphatic alcohol (a). Has a structure.
(II) The plurality of alkylene oxides (t) having 2 to 4 carbon atoms are the same.
(III) The plurality of alkylene oxides (s) having 2 to 4 carbon atoms may be the same or different, but when they are the same, the alkylene oxide (s) and the alkylene oxide (t) are different. ..
It should be noted that the polyether (A) includes how the alkylene oxide (s) and the alkylene oxide (t) are polymerized, and the alkylene oxide (s) and the alkylene oxide (t) in the polyether (A). It is difficult to clearly distinguish the boundary. That is, there is a situation (impossible / impractical situation) in which it is impossible or almost impractical to directly specify the polyether (A) by its structure or property.
本発明におけるポリエーテル（Ａ）は、例えば、３価の脂肪族アルコール（ａ）に、必要により触媒（水酸化カリウム、水酸化ナトリウム等）の存在下で、アルキレンオキシド（ｓ）に対応するアルキレンオキシドを付加反応し、さらにアルキレンオキシド（ｔ）に対応するアルキレンオキシドを付加反応することで製造できる。 The polyether (A) in the present invention corresponds to the alkylene oxide (s) in the presence of, for example, a trivalent aliphatic alcohol (a) and a catalyst (potassium hydroxide, sodium hydroxide, etc.), if necessary. It can be produced by an addition reaction of an oxide and further an addition reaction of an alkylene oxide corresponding to the alkylene oxide (t).
前記３価の脂肪族アルコール（ａ）としては、例えばグリセリンおよびトリメチロールプロパンが挙げられる。
上記３価の脂肪族アルコール（ａ）のうち、加工性および工業上の観点から、好ましいのはグリセリンである。
ポリエーテル（Ａ）が２個の水酸基からなる場合、例えばプルロニック系界面活性剤、リバースプルロニック系活性剤では、加工性が不十分となる。
Examples of the trivalent aliphatic alcohol (a) include glycerin and trimethylolpropane.
Among the above trivalent aliphatic alcohols (a), glycerin is preferable from the viewpoint of processability and industry.
When the polyether (A) is composed of two hydroxyl groups, for example, a pluronic surfactant and a reverse pluronic activator have insufficient processability.
前記炭素数２〜４のアルキレンオキシド（ｔ）の付加モル数は、９〜３６である。低泡性および加工性の観点から、好ましくは１０〜３０、さらに好ましくは１２〜２４である。 The number of added moles of the alkylene oxide (t) having 2 to 4 carbon atoms is 9 to 36. From the viewpoint of low foaming property and processability, it is preferably 10 to 30, more preferably 12 to 24.
前記炭素数２〜４のアルキレンオキシド（ｔ）としては、エチレンオキシド（以下、ＥＯと略記）、１，２−プロピレンオキシド（以下、ＰＯと略記）および１，２−ブチレンオキシドが挙げられ、複数あるアルキレンオキシド（ｔ）は同一である。アルキレンオキシド（ｔ）のうち、低泡性の観点から、好ましいのはＰＯである。 Examples of the alkylene oxide (t) having 2 to 4 carbon atoms include ethylene oxide (hereinafter abbreviated as EO), 1,2-propylene oxide (hereinafter abbreviated as PO) and 1,2-butylene oxide, and there are a plurality of them. The alkylene oxide (t) is the same. Of the alkylene oxide (t), PO is preferable from the viewpoint of low foaming property.
前記炭素数２〜４のアルキレンオキシド（ｓ）の付加モル数は、６〜６０である。加工性および取り扱いの観点から、好ましくは１２〜５７、さらに好ましくは１８〜５４である。 The number of added moles of the alkylene oxide (s) having 2 to 4 carbon atoms is 6 to 60. From the viewpoint of workability and handling, it is preferably 12 to 57, more preferably 18 to 54.
前記炭素数２〜４のアルキレンオキシド（ｓ）としては、ＥＯ、ＰＯおよび１，２−ブチレンオキシドが挙げられる。複数あるアルキレンオキシド（ｓ）は、同一であっても異なっていても良いが、同一である場合、アルキレンオキシド（ｓ）とアルキレンオキシド（ｔ）とは異なる。
また、アルキレンオキシド（ｓ）が２種以上の場合、それぞれのアルキレンオキシド（ｓ）の順序は任意であり、付加形式はランダム付加でも、ブロック付加でもよい。
上記アルキレンオキシド（ｓ）のうち、加工性および低泡性の観点から、好ましいのはＥＯ、ＰＯ、ＥＯとＰＯとの併用であり、さらに好ましいのはＥＯとＰＯとの併用である。
Examples of the alkylene oxide (s) having 2 to 4 carbon atoms include EO, PO and 1,2-butylene oxide. The plurality of alkylene oxides (s) may be the same or different, but when they are the same, the alkylene oxide (s) and the alkylene oxide (t) are different.
When there are two or more types of alkylene oxides (s), the order of each alkylene oxide (s) is arbitrary, and the addition form may be random addition or block addition.
Among the above alkylene oxides (s), from the viewpoint of processability and low foaming property, EO, PO, and EO and PO are preferably used in combination, and EO and PO are more preferable.
ポリエーテル（Ａ）の数平均分子量［Ｍｎと略する場合がある］は、加工性および低温安定性の観点から、好ましくは１，０００〜５，０００、さらに好ましくは１，５００〜４，５００、とくに好ましくは２，０００〜４，０００、最も好ましくは２，０００〜３，５００である。
なお、ポリエーテル（Ａ）の数平均分子量（Ｍｎ）、重量平均分子量（Ｍｗ）は、ゲルパーミエーションクロマトグラフィーにより、以下の条件で測定する。
＜（Ａ）の分子量の測定条件＞
装置 ：「Ａｌｌｉａｎｃｅ」［日本ウオーターズ（株）製］
カラム ：「ＴＳＫ ｇｅｌ Ｓｕｐｅｒ Ｈ４０００」１本
「ＴＳＫ ｇｅｌ Ｓｕｐｅｒ Ｈ３０００」１本
「ＴＳＫ ｇｅｌ Ｓｕｐｅｒ Ｈ２０００」１本
測定温度 ：４０℃
試料溶液 ：０．５重量％のテトラヒドロフラン溶液
溶液注入量：２００μｌ
検出装置 ：屈折率検出器
標準 ：ＰＯＬＹＥＴＨＹＬＥＮＥ ＯＸＩＤＥ
The number average molecular weight [may be abbreviated as Mn] of the polyether (A) is preferably 1,000 to 5,000, more preferably 1,500 to 4,500 from the viewpoint of processability and low temperature stability. , Particularly preferably 2,000 to 4,000, most preferably 2,000 to 3,500.
The number average molecular weight (Mn) and the weight average molecular weight (Mw) of the polyether (A) are measured by gel permeation chromatography under the following conditions.
<Measuring conditions for molecular weight in (A)>
Equipment: "Alliance" [manufactured by Nippon Waters Co., Ltd.]
Column: 1 "TSK gel Super H4000"
1 "TSK gel Super H3000"
1 "TSK gel Super H2000"
Measurement temperature: 40 ° C
Sample solution: 0.5 wt% tetrahydrofuran solution Solution injection volume: 200 μl
Detector: Refractive index detector Standard: POLYETHYLENE OXIDE
また、ポリエーテル（Ａ）中のアルキレンオキシド（ｓ）とアルキレンオキシド（ｔ）の合計重量に基づいて、エチレンオキシド単位の重量［以下、ＥＯ単位の重量と略記］は、水への溶解性および加工性の観点から、好ましくは５〜７０重量％、さらに好ましくは１０〜６０重量％、とくに好ましくは１５〜５０重量％、最も好ましくは２０〜４０重量％である。
上記は、アルキレンオキシド（ｓ）及びアルキレンオキシド（ｔ）の種類、重量により調整できる。また、１Ｈ−ＮＭＲにより測定、算出できる。
Further, based on the total weight of the alkylene oxide (s) and the alkylene oxide (t) in the polyether (A), the weight of the ethylene oxide unit [hereinafter, abbreviated as the weight of the EO unit] is soluble in water and processed. From the viewpoint of sex, it is preferably 5 to 70% by weight, more preferably 10 to 60% by weight, particularly preferably 15 to 50% by weight, and most preferably 20 to 40% by weight.
The above can be adjusted by the type and weight of the alkylene oxide (s) and the alkylene oxide (t). In addition, it can be measured and calculated by 1 H-NMR.
＜カルボン酸のアルカリ金属塩（Ｂ）＞
本発明におけるカルボン酸のアルカリ金属塩（Ｂ）は、カルボン酸とアルカリ金属とから構成される塩である。
上記カルボン酸としては、炭素数［以下、Ｃと略記することがある］２〜６のもの、例えば、酢酸、乳酸、マレイン酸、クエン酸、リンゴ酸が挙げられる。なお、カルボン酸は１種単独でも、２種以上を併用してもよい。これらのカルボン酸のうち、加工性、低泡性の観点から、好ましいのは酢酸、乳酸、クエン酸、リンゴ酸、さらに好ましいのは乳酸である。
また、上記アルカリ金属としては、例えば、リチウム、ナトリウム、カリウム、セシウムが挙げられる。なお、アルカリ金属は１種単独でも、２種以上を併用してもよい。これらのアルカリ金属のうち、加工性、低泡性の観点から、好ましいのはナトリウム、カリウムである。
<Alkali metal salt of carboxylic acid (B)>
The alkali metal salt (B) of the carboxylic acid in the present invention is a salt composed of the carboxylic acid and the alkali metal.
Examples of the carboxylic acid include those having 2 to 6 carbon atoms [hereinafter, may be abbreviated as C], such as acetic acid, lactic acid, maleic acid, citric acid, and malic acid. The carboxylic acid may be used alone or in combination of two or more. Among these carboxylic acids, acetic acid, lactic acid, citric acid, malic acid are preferable, and lactic acid is more preferable, from the viewpoint of processability and low foaming property.
Examples of the alkali metal include lithium, sodium, potassium and cesium. The alkali metal may be used alone or in combination of two or more. Of these alkali metals, sodium and potassium are preferable from the viewpoint of processability and low foaming property.
カルボン酸のアルカリ金属塩（Ｂ）は、市販のものでもよく、また、カルボン酸とアルカリ金属の水酸化物とを中和して製造してもよい。 The alkali metal salt (B) of the carboxylic acid may be a commercially available product, or may be produced by neutralizing the carboxylic acid and the hydroxide of the alkali metal.
＜金属加工用基油（Ｘ）＞
本発明の金属加工用基油（Ｘ）は、前記ポリエーテル（Ａ）とカルボン酸のアルカリ金属塩（Ｂ）とを含有してなる。前記ポリエーテル（Ａ）の重量に基づいてカルボン酸のアルカリ金属塩（Ｂ）の重量は、０．０５〜５重量％であり、加工性、低温安定性、製造コストおよび生産効率の観点から、好ましくは０．１〜４重量％、さらに好ましくは０．２〜３重量％である。
カルボン酸のアルカリ金属塩（Ｂ）の重量が０．０５重量％未満では、加工性が不十分であるのに加え、工業上の課題（処理コストが高く、低収率）もあり、一方、５重量％を超えると、低温安定性が不十分となる。
上記カルボン酸のアルカリ金属塩（Ｂ）の重量は、１Ｈ−ＮＭＲ、蛍光Ｘ線測定を組み合わせて算出できる。
<Base oil for metal processing (X)>
The base oil (X) for metal processing of the present invention contains the polyether (A) and an alkali metal salt (B) of a carboxylic acid. Based on the weight of the polyether (A), the weight of the alkali metal salt (B) of the carboxylic acid is 0.05 to 5% by weight, and from the viewpoints of processability, low temperature stability, production cost and production efficiency, It is preferably 0.1 to 4% by weight, more preferably 0.2 to 3% by weight.
If the weight of the alkali metal salt (B) of the carboxylic acid is less than 0.05% by weight, the processability is insufficient and there are industrial problems (high processing cost and low yield), while If it exceeds 5% by weight, the low temperature stability becomes insufficient.
The weight of the alkali metal salt (B) of the carboxylic acid can be calculated by combining 1 1 H-NMR and fluorescent X-ray measurement.
金属加工用基油（Ｘ）は、後述の水性金属加工油に使用する基油として好適である。金属加工油の用途としては、種々のもの、例えば、切削油、圧延油、プレス油が挙げられる。
金属加工用基油（Ｘ）は、ポリエーテル（Ａ）とカルボン酸のアルカリ金属塩（Ｂ）とを混合して製造できるが、工業上の観点からは、ポリエーテル（Ａ）製造時の触媒（水酸化カリウム、水酸化ナトリウム等）と、カルボン酸とを中和することにより、金属加工用基油（Ｘ）を製造することが好ましい。
The metal processing base oil (X) is suitable as a base oil used for the water-based metal processing oil described later. Applications of metalworking oils include various types such as cutting oils, rolling oils and press oils.
The base oil (X) for metal processing can be produced by mixing a polyether (A) and an alkali metal salt (B) of a carboxylic acid, but from an industrial point of view, a catalyst for producing the polyether (A). It is preferable to produce the base oil (X) for metal processing by neutralizing (potassium hydroxide, sodium hydroxide, etc.) and carboxylic acid.
＜水性金属加工油（Ｙ）＞
本発明の水性金属加工油（Ｙ）は、金属加工用基油（Ｘ）と、水とを含有してなる。該水性金属加工油（Ｙ）の重量に基づいて、該金属加工用基油（Ｘ）の重量は、用途によっても異なるが、加工性の観点から、好ましくは０．１〜１０重量％、さらに好ましくは０．３〜３重量％である。
<Aqueous metal processing oil (Y)>
The aqueous metal processing oil (Y) of the present invention contains a base oil (X) for metal processing and water. Based on the weight of the aqueous metal processing oil (Y), the weight of the metal processing base oil (X) varies depending on the application, but is preferably 0.1 to 10% by weight, more preferably, from the viewpoint of processability. It is preferably 0.3 to 3% by weight.
水性金属加工油（Ｙ）には、前記金属加工用基油（Ｘ）、水以外に、本発明の効果を阻害しない範囲で、必要により、添加剤を添加してもよい。該添加剤としては、例えば、酸化防止剤（２，４−ジメチル−６−ｔ−ブチルフェノール等）、極圧添加剤（ナフテン酸鉛等）、防錆剤（ノナン酸トリエタノールアミン塩等）、消泡剤（ポリオルガノシロキサン等）が挙げられる。 In addition to the metalworking base oil (X) and water, an additive may be added to the aqueous metalworking oil (Y), if necessary, as long as the effects of the present invention are not impaired. Examples of the additive include an antioxidant (2,4-dimethyl-6-t-butylphenol, etc.), an extreme pressure additive (lead naphthenate, etc.), a rust preventive (triethanolamine nonanoate salt, etc.), and the like. Examples include antifoaming agents (polyorganosiloxane, etc.).
本発明の水性金属加工油（Ｙ）は、金属加工用基油（Ｘ）と、水と、必要により上記添加剤とを混合して製造できる。水性金属加工油（Ｙ）は、泡立ちが小であり、金属加工性に優れるため、金属加工用途に好適に使用できる。 The aqueous metal processing oil (Y) of the present invention can be produced by mixing a base oil (X) for metal processing, water, and if necessary, the above additives. The water-based metal processing oil (Y) has small foaming and is excellent in metal workability, and therefore can be suitably used for metal processing applications.
以下、実施例及び比較例により本発明をさらに説明するが、本発明はこれに限定されるものではない。以下において、％は重量％、部は重量部を表す。なお、実施例２、６および７は参考例である。 Hereinafter, the present invention will be further described with reference to Examples and Comparative Examples, but the present invention is not limited thereto. In the following,% represents% by weight and parts represent parts by weight. In addition, Examples 2, 6 and 7 are reference examples.
＜実施例１＞
ステンレス製加圧反応装置にグリセリン７５部と水酸化カリウム０．９１部を仕込み、窒素置換後に、１４０℃で予め混合しておいたエチレンオキサイド３７２部とプロピレンオキサイド３７２部を同時に約６時間で圧入し、同温度でさらに約４時間反応させた後、さらにプロピレンオキサイド９９９部を約８時間で圧入し、同温度でさらに約８時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）１．６６部を仕込み、１時間撹拌して、ポリエーテル（Ａ−１）と乳酸カリウム（Ｂ−１）とを含有してなる金属加工用基油（Ｘ−１）を得た。
なお、（Ａ−１）の重量に基づく、（Ｂ−１）の重量は０．１１重量％であった。また、（Ａ−１）の数平均分子量（Ｍｎ）は２２２０、ＥＯ単位の重量は２１．３重量％であった。
<Example 1>
75 parts of glycerin and 0.91 part of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 372 parts of ethylene oxide and 372 parts of propylene oxide that had been mixed in advance at 140 ° C. were press-fitted at the same time in about 6 hours. Then, after further reacting at the same temperature for about 4 hours, 999 parts of propylene oxide was press-fitted in about 8 hours, reacted at the same temperature for another about 8 hours, cooled to 80 ° C. or lower, and then lactic acid (lactate). 1.66 parts (88% aqueous solution manufactured by Porac) is charged, stirred for 1 hour, and a base oil for metal processing (X-) containing polyether (A-1) and potassium lactate (B-1). 1) was obtained.
The weight of (B-1) based on the weight of (A-1) was 0.11% by weight. The number average molecular weight (Mn) of (A-1) was 2220, and the weight of EO units was 21.3% by weight.
＜実施例２＞
ステンレス製加圧反応装置にグリセリン１２０部と水酸化カリウム４．４５部を仕込み、窒素置換後に、１２０℃で予め混合しておいたエチレンオキサイド２６５部とプロピレンオキサイド２６５部を同時に約５時間で圧入し、同温度でさらに約４時間反応させた後、さらにプロピレンオキサイド１１３１部を約８時間で圧入し、同温度でさらに約８時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）８．１３部を仕込み、１時間撹拌して、ポリエーテル（Ａ−２）と乳酸カリウム（Ｂ−２）とを含有してなる金属加工用基油（Ｘ−２）を得た。
なお、（Ａ−２）の重量に基づく、（Ｂ−２）の重量は０．５７重量％であった。また、（Ａ−２）の数平均分子量（Ｍｎ）は１３７０、ＥＯ単位の重量は１６．０重量％であった。
<Example 2>
120 parts of glycerin and 4.45 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 265 parts of ethylene oxide and 265 parts of propylene oxide that had been mixed in advance at 120 ° C. were press-fitted at the same time in about 5 hours. Then, after further reacting at the same temperature for about 4 hours, 1131 parts of propylene oxide was press-fitted in about 8 hours, reacted at the same temperature for another about 8 hours, cooled to 80 ° C. or lower, and then lactic acid (lactate). 8.13 parts (88% aqueous solution manufactured by Porac) was charged, stirred for 1 hour, and a base oil for metal processing (X-) containing polyether (A-2) and potassium lactate (B-2). 2) was obtained.
The weight of (B-2) based on the weight of (A-2) was 0.57% by weight. The number average molecular weight (Mn) of (A-2) was 1370, and the weight of EO units was 16.0% by weight.
＜実施例３＞
ステンレス製加圧反応装置にグリセリン５４部と水酸化カリウム１４．２６部を仕込み、窒素置換後に、１００℃で予め混合しておいたエチレンオキサイド７１０部とプロピレンオキサイド７１０部を同時に約６時間で圧入し、同温度でさらに約４時間反応させた後、さらにプロピレンオキサイド３０８部を約２時間で圧入し、同温度でさらに約４時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）２６．０５部を仕込み、１時間撹拌して、ポリエーテル（Ａ−３）と乳酸カリウム（Ｂ−３）とを含有してなる金属加工用基油（Ｘ−３）を得た。
なお、（Ａ−３）の重量に基づく、（Ｂ−３）の重量は１．８重量％であった。また、（Ａ−３）の数平均分子量（Ｍｎ）は３０２０、ＥＯ単位の重量は４１．１重量％であった。
<Example 3>
54 parts of glycerin and 14.26 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 710 parts of ethylene oxide and 710 parts of propylene oxide, which had been mixed in advance at 100 ° C., were simultaneously press-fitted in about 6 hours. Then, after further reacting at the same temperature for about 4 hours, 308 parts of propylene oxide was press-fitted in about 2 hours, reacted at the same temperature for another about 4 hours, cooled to 80 ° C. or lower, and then lactic acid ( 26.05 parts (88% aqueous solution manufactured by Porac) was charged, stirred for 1 hour, and a base oil for metal processing (X-) containing polyether (A-3) and potassium lactate (B-3). 3) was obtained.
The weight of (B-3) based on the weight of (A-3) was 1.8% by weight. The number average molecular weight (Mn) of (A-3) was 3020, and the weight of EO units was 41.1% by weight.
＜実施例４＞
ステンレス製加圧反応装置にグリセリン５５部と水酸化ナトリウム４．５０部を仕込み、窒素置換後に、１２０℃で予め混合しておいたエチレンオキサイド２７２部とプロピレンオキサイド２７２部を同時に約４時間で圧入し、同温度でさらに約４時間反応させた後、さらにエチレンオキサイド６００部を約４時間で圧入し、同温度でさらに約４時間反応させた後、さらにプロピレンオキサイド６００部を約４時間で圧入し、同温度でさらに約６時間反応させ後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）１１．５１部を仕込み、１時間撹拌して、ポリエーテル（Ａ−４）と乳酸ナトリウム（Ｂ−４）とを含有してなる金属加工用基油（Ｘ−４）を得た。
なお、（Ａ−４）の重量に基づく、（Ｂ−４）の重量は０．７０重量％であった。また、（Ａ−４）の数平均分子量（Ｍｎ）は３０００、ＥＯ単位の重量は５０．０重量％であった。
<Example 4>
55 parts of glycerin and 4.50 parts of sodium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 272 parts of ethylene oxide and 272 parts of propylene oxide, which had been mixed in advance at 120 ° C., were simultaneously press-fitted in about 4 hours. Then, after further reacting at the same temperature for about 4 hours, 600 parts of ethylene oxide was press-fitted in about 4 hours, and after further reacting at the same temperature for about 4 hours, 600 parts of propylene oxide was press-fitted in about 4 hours. Then, after further reacting at the same temperature for about 6 hours, the temperature is cooled to 80 ° C. or lower, 11.51 parts of lactic acid (88% aqueous solution manufactured by Porac) is charged, and the mixture is stirred for 1 hour to perform a polyether (A-). A base oil for metal processing (X-4) containing 4) and sodium lactate (B-4) was obtained.
The weight of (B-4) based on the weight of (A-4) was 0.70% by weight. The number average molecular weight (Mn) of (A-4) was 3000, and the weight of EO units was 50.0% by weight.
＜実施例５＞
ステンレス製加圧反応装置にグリセリン６０部と水酸化セシウム４．５５部を仕込み、窒素置換後に、１００℃でエチレンオキサイド８８０部を約６時間で圧入し、同温度でさらに約４時間反応させた後、さらにプロピレンオキサイド８８０部を約９時間で圧入し、同温度でさらに約６時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）３．１０部を仕込み、１時間撹拌して、ポリエーテル（Ａ−５）と乳酸セシウム（Ｂ−５）とを含有してなる金属加工用基油（Ｘ−５）を得た。
なお、（Ａ−５）の重量に基づく、（Ｂ−５）の重量は０．３７重量％であった。また、（Ａ−５）の数平均分子量（Ｍｎ）は２８００、ＥＯ単位の重量は５０．０重量％であった。
<Example 5>
60 parts of glycerin and 4.55 parts of cesium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 880 parts of ethylene oxide was press-fitted at 100 ° C. for about 6 hours and reacted at the same temperature for another about 4 hours. After that, 880 parts of propylene oxide was press-fitted in about 9 hours, reacted at the same temperature for about 6 hours, cooled to 80 ° C. or lower, and then 3.10 parts of lactic acid (88% aqueous solution manufactured by Porac). Was charged and stirred for 1 hour to obtain a base oil for metal processing (X-5) containing a polyether (A-5) and cesium lactic acid (B-5).
The weight of (B-5) based on the weight of (A-5) was 0.37% by weight. The number average molecular weight (Mn) of (A-5) was 2800, and the weight of EO units was 50.0% by weight.
＜実施例６＞
ステンレス製加圧反応装置にグリセリン５５部と水酸化カリウム４．５０部を仕込み、窒素置換後に、１２０℃で予め混合しておいたエチレンオキサイド１２２部とプロピレンオキサイド１２２部を同時に約４時間で圧入し、同温度でさらに約２時間反応させた後、さらにプロピレンレンオキサイド７５０部を約６時間で圧入し、同温度でさらに約４時間反応させた後、さらにエチレンオキサイド７５０部を約５時間で圧入し、同温度でさらに約４時間反応させ後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）８．２２部を仕込み、１時間撹拌して、ポリエーテル（Ａ−６）と乳酸カリウム（Ｂ−６）とを含有してなる金属加工用基油（Ｘ−６）を得た。
なお、（Ａ−６）の重量に基づく、（Ｂ−６）の重量は０．５７重量％であった。また、（Ａ−６）の数平均分子量（Ｍｎ）は３０００、ＥＯ単位の重量は５０．０重量％であった。
<Example 6>
55 parts of glycerin and 4.50 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 122 parts of ethylene oxide and 122 parts of propylene oxide that had been mixed in advance at 120 ° C. were press-fitted at the same time in about 4 hours. Then, after further reacting at the same temperature for about 2 hours, 750 parts of propylene oxide was press-fitted in about 6 hours, and after further reacting at the same temperature for about 4 hours, another 750 parts of ethylene oxide was added in about 5 hours. After press-fitting and reacting at the same temperature for about 4 hours, the temperature is cooled to 80 ° C. or lower, 8.22 parts of lactic acid (88% aqueous solution manufactured by Porac) is charged, and the mixture is stirred for 1 hour to perform a polyether (A). A base oil for metal processing (X-6) containing -6) and potassium lactate (B-6) was obtained.
The weight of (B-6) based on the weight of (A-6) was 0.57% by weight. The number average molecular weight (Mn) of (A-6) was 3000, and the weight of EO units was 50.0% by weight.
＜実施例７＞
ステンレス製加圧反応装置にグリセリン６０部と水酸化カリウム４．５５部を仕込み、窒素置換後に、１２０℃でプロピレンオキサイド８８０部を約１０時間で圧入し、同温度でさらに約６時間反応させた後、さらにエチレンオキサイド８８０部を約６時間で圧入し、同温度でさらに約６時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）８．３１部を仕込み、１時間撹拌して、ポリエーテル（Ａ−７）と乳酸カリウム（Ｂ−７）とを含有してなる金属加工用基油（Ｘ−７）を得た。
なお、（Ａ−７）の重量に基づく、（Ｂ−７）の重量は０．５７重量％であった。また、（Ａ−７）の数平均分子量（Ｍｎ）は２８００、ＥＯ単位の重量は５０．０重量％であった。
<Example 7>
60 parts of glycerin and 4.55 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 880 parts of propylene oxide was press-fitted at 120 ° C. for about 10 hours and reacted at the same temperature for another about 6 hours. After that, 880 parts of ethylene oxide was press-fitted in about 6 hours, reacted at the same temperature for about 6 hours, cooled to 80 ° C. or lower, and then 8.31 parts of lactic acid (88% aqueous solution manufactured by Porac). Was charged and stirred for 1 hour to obtain a base oil for metal processing (X-7) containing a polyether (A-7) and potassium lactate (B-7).
The weight of (B-7) based on the weight of (A-7) was 0.57% by weight. The number average molecular weight (Mn) of (A-7) was 2800, and the weight of EO units was 50.0% by weight.
＜実施例８＞
ステンレス製加圧反応装置にグリセリン４５部と水酸化カリウム４．１４部を仕込み、窒素置換後に、１２０℃で予め混合しておいたエチレンオキサイド６１４部とプロピレンオキサイド６１４部を同時に約４時間で圧入し、同温度でさらに約３時間反応させた後、さらにプロピレンオキサイド３８４部を約４時間で圧入し、同温度でさらに約４時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）７．５７部を仕込み、１時間撹拌して、ポリエーテル（Ａ−８）と乳酸カリウム（Ｂ−８）とを含有してなる金属加工用基油（Ｘ−８）を得た。
なお、（Ａ−８）の重量に基づく、（Ｂ−８）の重量は０．５７重量％であった。また、（Ａ−８）の数平均分子量（Ｍｎ）は３３８３、ＥＯ単位の重量は３８．１重量％であった。
<Example 8>
45 parts of glycerin and 4.14 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 614 parts of ethylene oxide and 614 parts of propylene oxide that had been mixed in advance at 120 ° C. were press-fitted at the same time in about 4 hours. Then, after further reacting at the same temperature for about 3 hours, 384 parts of propylene oxide was press-fitted in about 4 hours, reacted at the same temperature for another about 4 hours, cooled to 80 ° C. or lower, and then lactic acid (lactate). 7.57 parts (88% aqueous solution manufactured by Porac) is charged, stirred for 1 hour, and a base oil for metal processing (X-) containing polyether (A-8) and potassium lactate (B-8). 8) was obtained.
The weight of (B-8) based on the weight of (A-8) was 0.57% by weight. The number average molecular weight (Mn) of (A-8) was 3383, and the weight of EO units was 38.1% by weight.
＜実施例９＞
ステンレス製加圧反応装置にグリセリン４５部と水酸化カリウム４．４６部を仕込み、窒素置換後に、１２０℃で予め混合しておいたエチレンオキサイド６１４部とプロピレンオキサイド６１４部を同時に約４時間で圧入し、同温度でさらに約３時間反応させた後、さらにプロピレンオキサイド５１２部を約５時間で圧入し、同温度でさらに約４時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）８．１５部を仕込み、１時間撹拌して、ポリエーテル（Ａ−９）と乳酸カリウム（Ｂ−９）とを含有してなる金属加工用基油（Ｘ−９）を得た。
なお、（Ａ−９）の重量に基づく、（Ｂ−９）の重量は０．５７重量％であった。また、（Ａ−９）の数平均分子量（Ｍｎ）は３６４４、ＥＯ単位の重量は３５．３重量％であった。
<Example 9>
45 parts of glycerin and 4.46 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 614 parts of ethylene oxide and 614 parts of propylene oxide that had been mixed in advance at 120 ° C. were press-fitted at the same time in about 4 hours. Then, after further reacting at the same temperature for about 3 hours, 512 parts of propylene oxide was press-fitted in about 5 hours, reacted at the same temperature for another about 4 hours, cooled to 80 ° C. or lower, and then lactic acid (lactate). 8.15 parts (88% aqueous solution manufactured by Porac) was charged, stirred for 1 hour, and a base oil for metal processing (X-) containing polyether (A-9) and potassium lactate (B-9). 9) was obtained.
The weight of (B-9) based on the weight of (A-9) was 0.57% by weight. The number average molecular weight (Mn) of (A-9) was 3644, and the weight of EO units was 35.3% by weight.
＜実施例１０＞
ステンレス製加圧反応装置にグリセリン４５部と水酸化カリウム４．２７部を仕込み、窒素置換後に、１２０℃で予め混合しておいたエチレンオキサイド６３９部とプロピレンオキサイド６３９部を同時に約４時間で圧入し、同温度でさらに約３時間反応させた後、さらにプロピレンオキサイド３８４部を約４時間で圧入し、同温度でさらに約４時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）７．７９部を仕込み、１時間撹拌して、ポリエーテル（Ａ−１０）と乳酸カリウム（Ｂ−１０）とを含有してなる金属加工用基油（Ｘ−１０）を得た。
なお、（Ａ−１０）の重量に基づく、（Ｂ−１０）の重量は０．５７重量％であった。また、（Ａ−１０）の数平均分子量（Ｍｎ）は３４８３、ＥＯ単位の重量は３８．５重量％であった。
<Example 10>
45 parts of glycerin and 4.27 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 639 parts of ethylene oxide and 639 parts of propylene oxide that had been mixed in advance at 120 ° C. were press-fitted at the same time in about 4 hours. Then, after further reacting at the same temperature for about 3 hours, 384 parts of propylene oxide was press-fitted in about 4 hours, reacted at the same temperature for another about 4 hours, cooled to 80 ° C. or lower, and then lactic acid (lactate). 7.79 parts of Porac (88% aqueous solution) is charged, stirred for 1 hour, and a base oil for metal processing (X-) containing polyether (A-10) and potassium lactate (B-10). 10) was obtained.
The weight of (B-10) based on the weight of (A-10) was 0.57% by weight. The number average molecular weight (Mn) of (A-10) was 3483, and the weight of EO units was 38.5% by weight.
＜実施例１１＞
ステンレス製加圧反応装置にグリセリン４０部と水酸化カリウム４．３４部を仕込み、窒素置換後に、１２０℃で予め混合しておいたエチレンオキサイド６１８部とプロピレンオキサイド６１８部を同時に約４時間で圧入し、同温度でさらに約３時間反応させた後、さらにプロピレンオキサイド４５９部を約５時間で圧入し、同温度でさらに約４時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）７．９２部を仕込み、１時間撹拌して、ポリエーテル（Ａ−１１）と乳酸カリウム（Ｂ−１１）とを含有してなる金属加工用基油（Ｘ−１１）を得た。
なお、（Ａ−１１）の重量に基づく、（Ｂ−１１）の重量は０．５７重量％であった。また、（Ａ−１１）の数平均分子量（Ｍｎ）は３９４４、ＥＯ単位の重量は３６．４重量％であった。
<Example 11>
40 parts of glycerin and 4.34 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 618 parts of ethylene oxide and 618 parts of propylene oxide that had been mixed in advance at 120 ° C. were press-fitted at the same time in about 4 hours. Then, after further reacting at the same temperature for about 3 hours, 459 parts of propylene oxide was press-fitted in about 5 hours, reacted at the same temperature for another about 4 hours, cooled to 80 ° C. or lower, and then lactic acid (lactate). 7.92 parts of Porac (88% aqueous solution) is charged, stirred for 1 hour, and a base oil for metal processing (X-) containing polyether (A-11) and potassium lactate (B-11). 11) was obtained.
The weight of (B-11) based on the weight of (A-11) was 0.57% by weight. The number average molecular weight (Mn) of (A-11) was 3944, and the weight of EO units was 36.4% by weight.
＜比較例１＞
ステンレス製加圧反応装置にグリセリン７５部と水酸化カリウム０．９１部を仕込み、窒素置換後に、１４０℃で予め混合しておいたエチレンオキサイド３７２部とプロピレンオキサイド３７２部を同時に約６時間で圧入し、同温度でさらに約４時間反応させた後、さらにプロピレンオキサイド９９９部を約８時間で圧入し、同温度でさらに約８時間反応させた後、温度を８０℃以下まで冷却後、吸着処理剤［キョーワード６００、協和化学工業（株）］２０部と吸着処理剤［キョーワード１０００、協和化学工業（株）］２０部を仕込み、１時間撹拌して、さらに吸着剤処理剤をろ過して得られたろ液に、乳酸（Ｐｏｒａｃ社製、８８％水溶液）０．１４９部を仕込み、１時間撹拌して、ポリエーテル（比Ａ−１）と乳酸カリウム（比Ｂ−１）とを含有してなる金属加工用基油（比Ｘ−１）を得た。
なお、（比Ａ−１）の重量に基づく、（比Ｂ−１）の重量は０．０１重量％未満であった。また、（比Ａ−１）の数平均分子量（Ｍｎ）は２２２０、ＥＯ単位の重量は２１．３重量％であった。
<Comparative example 1>
75 parts of glycerin and 0.91 part of potassium hydroxide were charged into a stainless steel pressure reaction device, and after nitrogen substitution, 372 parts of ethylene oxide and 372 parts of propylene oxide premixed at 140 ° C. were simultaneously press-fitted in about 6 hours. Then, after further reacting at the same temperature for about 4 hours, 999 parts of propylene oxide was press-fitted in about 8 hours, reacted at the same temperature for another about 8 hours, cooled to 80 ° C. or lower, and then adsorbed. Add 20 parts of the agent [Kyoward 600, Kyowa Chemical Industry Co., Ltd.] and 20 parts of the adsorption treatment agent [Kyoward 1000, Kyowa Chemical Industry Co., Ltd.], stir for 1 hour, and further filter the adsorbent treatment agent. 0.149 parts of lactic acid (manufactured by Porac, 88% aqueous solution) was added to the obtained filtrate and stirred for 1 hour to contain polyether (ratio A-1) and potassium hydroxide (ratio B-1). A base oil for metal processing (ratio X-1) was obtained.
The weight of (ratio B-1) based on the weight of (ratio A-1) was less than 0.01% by weight. The number average molecular weight (Mn) of (ratio A-1) was 2220, and the weight of EO units was 21.3% by weight.
＜比較例２＞
ステンレス製加圧反応装置にグリセリン７５部と水酸化カリウム９．１部を仕込み、窒素置換後に、１４０℃で予め混合しておいたエチレンオキサイド３７２部とプロピレンオキサイド３７２部を同時に約２時間で圧入し、同温度でさらに約１時間反応させた後、さらにプロピレンオキサイド９９９部を約２時間で圧入し、同温度でさらに約２時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）８３部、水酸化カリウム３６．４部を仕込み、１時間撹拌して、ポリエーテル（比Ａ−２）と乳酸カリウム（比Ｂ−２）とを含有してなる金属加工用基油（比Ｘ−２）を得た。
なお、（比Ａ−２）の重量に基づく、（比Ｂ−２）の重量は５．７重量％であった。また、（比Ａ−２）の数平均分子量（Ｍｎ）は２２２０、ＥＯ単位の重量は２１．３重量％であった。
<Comparative example 2>
75 parts of glycerin and 9.1 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 372 parts of ethylene oxide and 372 parts of propylene oxide that had been mixed in advance at 140 ° C. were press-fitted at the same time in about 2 hours. Then, after further reacting at the same temperature for about 1 hour, 999 parts of propylene oxide was press-fitted in about 2 hours, reacted at the same temperature for another about 2 hours, cooled to 80 ° C. or lower, and then lactic acid (). 83 parts (88% aqueous solution, manufactured by Porac) and 36.4 parts of potassium hydroxide were charged and stirred for 1 hour to contain polyether (ratio A-2) and potassium lactate (ratio B-2). A base oil for metal processing (ratio X-2) was obtained.
The weight of (ratio B-2) based on the weight of (ratio A-2) was 5.7% by weight. The number average molecular weight (Mn) of (ratio A-2) was 2220, and the weight of EO units was 21.3% by weight.
＜比較例３＞
ステンレス製加圧反応装置にエチレングリコール４０部と水酸化カリウム４．５５部を仕込み、窒素置換後に、１２０℃でエチレンオキサイド６８８部を約５時間で圧入し、同温度でさらに約２時間反応させた後、さらにプロピレンオキサイド１０９２部を約８時間で圧入し、同温度でさらに約４時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）８．３１部を仕込み、１時間撹拌して、ポリエーテル（比Ａ−３）と乳酸カリウム（比Ｂ−３）とを含有してなる金属加工用基油（比Ｘ−３）を得た。
なお、（比Ａ−３）の重量に基づく、（比Ｂ−３）の重量は０．５７重量％であった。また、（比Ａ−３）の数平均分子量（Ｍｎ）は２８００、ＥＯ単位の重量は３７．８重量％であった。
<Comparative example 3>
40 parts of ethylene glycol and 4.55 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 688 parts of ethylene oxide was press-fitted at 120 ° C. for about 5 hours and reacted at the same temperature for another about 2 hours. After that, 1092 parts of propylene oxide was press-fitted in about 8 hours, reacted at the same temperature for about 4 hours, cooled to 80 ° C. or lower, and then lactic acid (88% aqueous solution manufactured by Porac) 8.31. The parts were charged and stirred for 1 hour to obtain a base oil for metal processing (ratio X-3) containing a polyether (ratio A-3) and potassium lactate (ratio B-3).
The weight of (ratio B-3) based on the weight of (ratio A-3) was 0.57% by weight. The number average molecular weight (Mn) of (ratio A-3) was 2800, and the weight of EO units was 37.8% by weight.
＜比較例４＞
ステンレス製加圧反応装置にグリセリン１０１部と水酸化カリウム４．３１部を仕込み、窒素置換後に、１４０℃で予め混合しておいたエチレンオキサイド１４２部とプロピレンオキサイド１４２部を同時に約４時間で圧入し、同温度でさらに約３時間反応させた後、さらにプロピレンオキサイド１３４０部を約６時間で圧入し、同温度でさらに約４時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）７．８８部を仕込み、１時間撹拌して、ポリエーテル（比Ａ−４）と乳酸カリウム（比Ｂ−４）とを含有してなる金属加工用基油（比Ｘ−４）を得た。
なお、（比Ａ−４）の重量に基づく、（比Ｂ−４）の重量は０．５７重量％であった。また、（比Ａ−４）の数平均分子量（Ｍｎ）は１５６８、ＥＯ単位の重量は８．７重量％であった。
<Comparative example 4>
101 parts of glycerin and 4.31 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen replacement, 142 parts of ethylene oxide and 142 parts of propylene oxide that had been mixed in advance at 140 ° C. were press-fitted at the same time in about 4 hours. Then, after further reacting at the same temperature for about 3 hours, 1340 parts of propylene oxide was press-fitted in about 6 hours, reacted at the same temperature for another about 4 hours, cooled to 80 ° C. or lower, and then lactic acid (lactate). 7.88 parts of Porac (88% aqueous solution) is charged and stirred for 1 hour to form a base oil for metal processing (ratio A-4) and potassium lactate (ratio B-4). Ratio X-4) was obtained.
The weight of (ratio B-4) based on the weight of (ratio A-4) was 0.57% by weight. The number average molecular weight (Mn) of (ratio A-4) was 1568, and the weight of EO units was 8.7% by weight.
＜比較例５＞
ステンレス製加圧反応装置にグリセリン３７部と水酸化カリウム４．４２部を仕込み、窒素置換後に、１４０℃で予め混合しておいたエチレンオキサイド６２２部とプロピレンオキサイド６２２部を同時に約８時間で圧入し、同温度でさらに約５時間反応させた後、さらにプロピレンオキサイド４８７部を約６時間で圧入し、同温度でさらに約４時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）８．０７部を仕込み、１時間撹拌して、ポリエーテル（比Ａ−５）と乳酸カリウム（比Ｂ−５）とを含有してなる金属加工用基油（比Ｘ−５）を得た。
なお、（比Ａ−５）の重量に基づく、（比Ｂ−５）の重量は０．５７重量％であった。また、（比Ａ−５）の数平均分子量（Ｍｎ）は４４１８、ＥＯ単位の重量は３５．９重量％であった。
<Comparative example 5>
37 parts of glycerin and 4.42 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 622 parts of ethylene oxide and 622 parts of propylene oxide, which had been mixed in advance at 140 ° C., were simultaneously press-fitted in about 8 hours. Then, after further reacting at the same temperature for about 5 hours, 487 parts of propylene oxide was press-fitted in about 6 hours, reacted at the same temperature for another about 4 hours, cooled to 80 ° C. or lower, and then lactic acid (lactate). A base oil for metal processing (ratio A-5) and potassium lactate (ratio B-5) containing 8.07 parts (88% aqueous solution manufactured by Porac) and stirring for 1 hour. A ratio of X-5) was obtained.
The weight of (ratio B-5) based on the weight of (ratio A-5) was 0.57% by weight. The number average molecular weight (Mn) of (ratio A-5) was 4418, and the weight of EO units was 35.9% by weight.
＜比較例６＞
ステンレス製加圧反応装置にグリセリン１１０部と水酸化カリウム４．３９部を仕込み、窒素置換後に、１４０℃で予め混合しておいたエチレンオキサイド５４５部とプロピレンオキサイド５４５部を同時に約７時間で圧入し、同温度でさらに約５時間反応させた後、さらにプロピレンオキサイド５５７部を約６時間で圧入し、同温度でさらに約４時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）８．０２部を仕込み、１時間撹拌して、ポリエーテル（比Ａ−６）と乳酸カリウム（比Ｂ−６）とを含有してなる金属加工用基油（比Ｘ−６）を得た。
なお、（比Ａ−６）の重量に基づく、（比Ｂ−６）の重量は０．５７重量％であった。また、（比Ａ−６）の数平均分子量（Ｍｎ）は１４６４、ＥＯ単位の重量は３３．１重量％であった。
<Comparative Example 6>
110 parts of glycerin and 4.39 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 545 parts of ethylene oxide and 545 parts of propylene oxide that had been mixed in advance at 140 ° C. were press-fitted at the same time in about 7 hours. Then, after further reacting at the same temperature for about 5 hours, 557 parts of propylene oxide was press-fitted in about 6 hours, reacted at the same temperature for another about 4 hours, cooled to 80 ° C. or lower, and then lactic acid (lactate). A base oil for metal processing (ratio A-6) and potassium lactate (ratio B-6) containing 8.02 parts (88% aqueous solution manufactured by Porac) and stirring for 1 hour. A ratio of X-6) was obtained.
The weight of (ratio B-6) based on the weight of (ratio A-6) was 0.57% by weight. The number average molecular weight (Mn) of (ratio A-6) was 1464, and the weight of EO units was 33.1% by weight.
＜比較例７＞
ステンレス製加圧反応装置にグリセリン５１部と水酸化カリウム４．４９部を仕込み、窒素置換後に、１４０℃で予め混合しておいたエチレンオキサイド２５０部とプロピレンオキサイド２５０部を同時に約６時間で圧入し、同温度でさらに約４時間反応させた後、さらにプロピレンオキサイド１２４４部を約８時間で圧入し、同温度でさらに約６時間反応させた後、温度を８０℃以下まで冷却後、乳酸（Ｐｏｒａｃ社製、８８％水溶液）８．１９部を仕込み、１時間撹拌して、ポリエーテル（比Ａ−７）と乳酸カリウム（比Ｂ−７）とを含有してなる金属加工用基油（比Ｘ−７）を得た。
なお、（比Ａ−７）の重量に基づく、（比Ｂ−７）の重量は０．５７重量％であった。また、（比Ａ−７）の数平均分子量（Ｍｎ）は３２６２、ＥＯ単位の重量は１４．３重量％であった。
<Comparative Example 7>
51 parts of glycerin and 4.49 parts of potassium hydroxide were charged into a stainless steel pressure reactor, and after nitrogen substitution, 250 parts of ethylene oxide and 250 parts of propylene oxide that had been mixed in advance at 140 ° C. were press-fitted at the same time in about 6 hours. Then, after further reacting at the same temperature for about 4 hours, 1244 parts of propylene oxide was press-fitted in about 8 hours, reacted at the same temperature for another about 6 hours, cooled to 80 ° C. or lower, and then lactic acid (lactate). 8.19 parts of Porac (88% aqueous solution) is charged, and the mixture is stirred for 1 hour to contain a base oil for metal processing (ratio A-7) and potassium lactate (ratio B-7). Ratio X-7) was obtained.
The weight of (ratio B-7) based on the weight of (ratio A-7) was 0.57% by weight. The number average molecular weight (Mn) of (ratio A-7) was 3262, and the weight of EO units was 14.3% by weight.
得られた各金属加工用基油（Ｘ）及び水性金属加工油（Ｙ）について、下記（１）〜（３）の方法で評価を行った。結果を表１〜２に示す。 The obtained base oil (X) for metal processing and the water-based metal processing oil (Y) were evaluated by the following methods (1) to (3). The results are shown in Tables 1 and 2.
（１）低温安定性［金属加工用基油（Ｘ）］
１００ｍＬスクリュー菅瓶（高さ９ｃｍ）に、各金属加工用基油（Ｘ）を７０ｇ仕込み、−７℃で１４日間保存した。保存後の金属加工用基油（Ｘ）の外観を目視により、以下の基準で評価した。
＜評価基準＞
○：かすみ、沈降物がない
△：かすみ又は沈降物が、わずかに確認できる
×：かすみ又は沈降物が、多い
(1) Low temperature stability [Base oil for metal processing (X)]
70 g of each metal processing base oil (X) was charged into a 100 mL screw tube bottle (height 9 cm) and stored at −7 ° C. for 14 days. The appearance of the base oil (X) for metal processing after storage was visually evaluated according to the following criteria.
<Evaluation criteria>
◯: No haze or sediment △: Slight haze or sediment can be confirmed ×: Many haze or sediment
得られた各金属加工用基油（Ｘ）０．５部、イオン交換水９７．１５部、ノナン酸０．６５部、トリエタノールアミン１．７部を、容器に仕込み、混合して、各水性金属加工油（Ｙ）を得た。得られた各水性金属加工油（Ｙ）について、下記（２）〜（３）の方法で評価を行った。 0.5 parts of the obtained base oil (X) for metal processing, 97.15 parts of ion-exchanged water, 0.65 part of nonanoic acid, and 1.7 parts of triethanolamine were charged into a container, mixed, and each. Aqueous metalworking oil (Y) was obtained. Each of the obtained aqueous metalworking oils (Y) was evaluated by the following methods (2) to (3).
（２）低泡性［水性金属加工油（Ｙ）］
３００ｍＬトールビーカー（高さ１３ｃｍ）に、水性金属加工油（Ｙ）を２００ｇ仕込み、２５℃に温度調整したものをバイオミキサー（日本精器社製、ＢＭ−２型）で４０秒間撹拌（１１，５００ｒｐｍ）することで発生させた泡が消失するまでの時間を測定して、以下の基準で評価した。
＜評価基準＞
◎：２００秒未満
○：２００秒以上、２５０秒未満
△：２５０秒以上、３００秒未満
×：３００秒以上
(2) Low foaming [water-based metalworking oil (Y)]
200 g of water-based metalworking oil (Y) was placed in a 300 mL tall beaker (height 13 cm), and the temperature was adjusted to 25 ° C. with a biomixer (manufactured by Nippon Seiki Co., Ltd., BM-2 type) for 40 seconds (11, The time until the bubbles generated by (500 rpm) disappeared was measured and evaluated according to the following criteria.
<Evaluation criteria>
⊚: less than 200 seconds ○: 200 seconds or more and less than 250 seconds Δ: 250 seconds or more and less than 300 seconds ×: 300 seconds or more
（３）加工性［水性金属加工油（Ｙ）］
８Ｍ転送タップ（ＯＳＧ社製、ＶＰ−ＮＲＴ）を取り付けた加工試験機（ＦＵＮＵＣ社製、Ｒｏｂｏｄｒｉｌｌ α−Ｔ１４ｉＦａ）に水性金属加工油（Ｙ）［８５℃で１０日間熱履歴をかけたもの］を１００Ｌ投入し、３０℃に温度調整した後、被加工金属として取り付けたＳＵＳ３０４（山陽特殊製鋼社製）を１０穴加工（加工速度：２．５ｍ／ｍｉｎ．）した際の最大トルク負荷の１０穴の数平均値を算出し、以下の基準で評価した。
＜評価基準＞
☆：２，０００Ｎ・ｃｍ未満
◎：２，０００Ｎ・ｃｍ以上、２，１００Ｎ・ｃｍ未満
○：２，１００Ｎ・ｃｍ以上、２，２００Ｎ・ｃｍ未満
□：２，２００Ｎ・ｃｍ以上、２，３００Ｎ・ｃｍ未満
△：２，３００Ｎ・ｃｍ以上、２，４００Ｎ・ｃｍ未満
×：２，４００Ｎ・ｃｍ以上
(3) Workability [Aqueous metalworking oil (Y)]
A processing tester (FUNUC, Robodrill α-T14iFa) equipped with an 8M transfer tap (OSG, VP-NRT) is loaded with water-based metal processing oil (Y) [heat history at 85 ° C for 10 days]. After charging 100 L and adjusting the temperature to 30 ° C, 10 holes of the maximum torque load when 10 holes are machined (machining speed: 2.5 m / min.) Of SUS304 (manufactured by Sanyo Special Steel Co., Ltd.) attached as the metal to be machined. The average value of the numbers was calculated and evaluated according to the following criteria.
<Evaluation criteria>
☆: Less than 2,000 N ・ cm ◎: 2,000 N ・ cm or more, less than 2,100 N ・ cm ○: 2,100 N ・ cm or more, less than 2,200 N ・ cm □: 2,200 N ・ cm or more, 2,300 N・ Less than cm Δ: 2,300 N ・ cm or more, less than 2,400 N ・ cm ×: 2,400 N ・ cm or more
なお、表１〜２中、例えばＥＯ／ＰＯは、ＥＯとＰＯとのランダム付加を表す。また、ＥＯ／ＰＯ−ＥＯは、ＥＯとＰＯとのランダム付加後、ＥＯブロック付加したことを表し、ＥＯ／ＰＯ−ＰＯは、ＥＯとＰＯとのランダム付加後、ＰＯブロック付加したことを表す。 In Tables 1 and 2, for example, EO / PO represents a random addition of EO and PO. Further, EO / PO-EO indicates that the EO block was added after the random addition of the EO and PO, and the EO / PO-PO indicates that the PO block was added after the random addition of the EO and PO.
表１〜２の結果から、本発明の金属加工用基油（Ｘ）は、比較のものと比べて、低温安定性に優れ、水性金属加工油（Ｙ）に優れた低泡性、優れた加工性を付与することがわかる。 From the results in Tables 1 and 2, the base oil for metal processing (X) of the present invention is superior in low temperature stability and excellent in low foaming property and excellent in water-based metal processing oil (Y) as compared with the comparative ones. It can be seen that workability is imparted.
本発明の金属加工用基油（Ｘ）は、低温安定性に優れ、水性金属加工油（Ｙ）に優れた低泡性、優れた加工性を付与するため、種々の金属加工用途、切削油、圧延油、プレス油等に好適に使用できるため極めて有用である。
The base oil (X) for metal processing of the present invention is excellent in low temperature stability, and in order to impart excellent low foaming property and excellent processability to the water-based metal processing oil (Y), various metal processing applications and cutting oils are used. , Rolling oil, press oil, etc., which is extremely useful.
Claims (4)
（Ｉ）３価の脂肪族アルコール（ａ）の炭素数２〜４のアルキレンオキシド（ｓ）１８〜５４モル付加物に、炭素数２〜４のアルキレンオキシド（ｔ）を９〜３６モル付加した構造を有し、前記アルキレンオキシド（ｔ）は１，２−プロピレンオキシドである。
（ＩＩ）複数ある前記炭素数２〜４のアルキレンオキシド（ｔ）は同一である。
（ＩＩＩ）複数ある前記炭素数２〜４のアルキレンオキシド（ｓ）は、同一であっても異なっていてもよいが、同一である場合、アルキレンオキシド（ｓ）とアルキレンオキシド（ｔ）とは異なる。 A base oil containing a polyether (A) satisfying the following (I) to (III) and an alkali metal salt (B) of a carboxylic acid, wherein the alkali metal salt (B) of the carboxylic acid is a lactic acid. It is at least one selected from the group consisting of sodium, potassium lactate, cesium lactate, sodium acetate, potassium acetate and cesium acetate, and contains an alkali metal salt (B) of a carboxylic acid based on the weight of the polyether (A). Base oil (X) for metal processing having an amount of 0.05 to 5% by weight.
(I) 9 to 36 mol of alkylene oxide (t) having 2 to 4 carbon atoms was added to 18 to 54 mol of alkylene oxide (s) having 2 to 4 carbon atoms of the trivalent aliphatic alcohol (a). structure have a, the alkylene oxide (t) is a 1,2-propylene oxide.
(II) The plurality of alkylene oxides (t) having 2 to 4 carbon atoms are the same.
(III) The plurality of alkylene oxides (s) having 2 to 4 carbon atoms may be the same or different, but when they are the same, the alkylene oxide (s) and the alkylene oxide (t) are different. ..
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