WO2010103806A1 - 金属加工油剤 - Google Patents
金属加工油剤 Download PDFInfo
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- WO2010103806A1 WO2010103806A1 PCT/JP2010/001658 JP2010001658W WO2010103806A1 WO 2010103806 A1 WO2010103806 A1 WO 2010103806A1 JP 2010001658 W JP2010001658 W JP 2010001658W WO 2010103806 A1 WO2010103806 A1 WO 2010103806A1
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- Prior art keywords
- water
- mass
- component
- metalworking fluid
- acid
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
-
- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
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- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
-
- C—CHEMISTRY; METALLURGY
- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/049—Phosphite
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
- C10N2040/245—Soft metals, e.g. aluminum
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
- C10N2040/246—Iron or steel
Definitions
- the present invention relates to a metal working fluid used when forming a metal material.
- water-soluble metalworking fluids that are excellent in cooling properties and infiltration properties, have no danger of fire, and have a low environmental load have come to be used frequently.
- a water-soluble metalworking fluid may be used also to the aluminum plate which has a hydrophilic surface as mentioned above.
- the present invention provides a metal processing oil that can maintain sufficient lubricity even for a metal material having a hydrophilic surface without impairing the hydrophilicity of the surface, and is excellent in processing performance of the metal material. With the goal.
- a water-soluble metalworking fluid comprising the following components (A), (B), (C) and (D): (A) Carboxylic acid having 8 to 18 carbon atoms (B) Trialkanolamine (C) Water-soluble polymer having a mass average molecular weight of 200 or more (D) Water (2) Water-soluble metal according to (1) above
- a water-soluble metal processing oil characterized in that the amount of each component is as follows based on the total amount of the water-soluble metal processing oil.
- water-soluble metalworking fluid in the water-soluble metalworking fluid according to any one of (1) to (4) above, at least one of an acidic phosphate ester, a phosphite ester, and a metal deactivator A water-soluble metalworking oil characterized by blending one kind.
- the water-soluble metalworking fluid of the present invention exhibits excellent lubricity and processing performance for various metal materials by being diluted with water. It is particularly excellent for plastic working of aluminum fins. Further, sufficient lubricity can be maintained even when the surface of the aluminum fin is coated with a hydrophilic resin.
- the water-soluble metalworking fluid of the present invention (hereinafter also simply referred to as “oil”) is a stock solution for use in various metalworking by diluting in water.
- the following (A) component, (B) component, ( C) and (D) component are mix
- the component (A) is a carboxylic acid having 8 to 18 carbon atoms, preferably 10 to 16 carbon atoms.
- the carboxylic acid may be a monocarboxylic acid or a polycarboxylic acid (such as a dibasic acid).
- aromatic carboxylic acid and fatty acid as carboxylic acid, a fatty acid (aliphatic carboxylic acid) is suitable from a water-soluble and lubricous viewpoint.
- the carboxylic acid may be a saturated fatty acid or an unsaturated fatty acid.
- saturated fatty acids caprylic acid (octanoic acid), pelargonic acid (nonanoic acid), capric acid (decanoic acid), lauric acid (dodecanoic acid), myristic acid (tetradecanoic acid), palmitic acid (hexadecanoic acid) , Margaric acid (heptadecanoic acid), stearic acid (octadecanoic acid), and the like.
- These fatty acids are not limited to straight chain structures, but include all branched isomers such as isooctanoic acid and neodecanoic acid.
- unsaturated fatty acids examples include octenoic acid, decenoic acid, docosenoic acid, and oleic acid.
- the inclusion of all branched isomers, not limited to linear structures, is the same as saturated fatty acids.
- a dicarboxylic acid nonanedioic acid having 9 to 12 carbon atoms, undecanedioic acid, sebacic acid, dodecanedioic acid and the like can be mentioned.
- the above-mentioned isononanoic acid is excellent in the effect (hard water stability) of reducing the formation of a solid on the liquid surface when the oil agent (stock solution) is diluted with water.
- the above-mentioned isononanoic acid is also excellent in the effect (hard water stability) of reducing the formation of a solid on the liquid surface when the oil agent (stock solution) is diluted with water.
- a dibasic acid as a fatty acid
- the salt is better when used as a salt, but from the viewpoint of the stability of the stock solution (hard to insolubilize), a dibasic acid and a monobasic acid are mixed. It is also preferable to use them.
- the blending amount of the component (A) is preferably 20% by mass or more and 40% by mass or less, more preferably 25% by mass or more and 35% by mass or less, based on the total amount of the water-soluble metalworking fluid.
- the blending amount of the component (A) is less than 20% by mass, the synergistic effect (formation of salt) with the component (B) described later is poor, and there is a possibility that the lubricity cannot be sufficiently exhibited when the oil agent is diluted with water. There is.
- the blending amount of the component (A) exceeds 40% by mass, the blending amount is too large with respect to the component (B) described later, and the lubricity as a metalworking fluid cannot be sufficiently exhibited.
- the component (B) is trialkanolamine and contributes to improvement of lubricity and reduction of odor.
- the three alkanol groups may be the same or different, but each carbon number is preferably 1 or more and 10 or less. If there is an alkanol group having more than 10 carbon atoms, the water solubility is lowered, which is not preferable. Moreover, it is preferable that the total carbon number of three alkanol groups is 3-12. If the total number of carbon atoms of the three alkanol groups is less than 3, odor may be generated, which is not preferable. On the other hand, if the total number of carbon atoms of the three alkanol groups is 13 or more, the water solubility decreases, which is not preferable. Examples of such alkanolamines include triethanolamine, tri-n-propanolamine, tri-i-propanolamine, and tri-n-butanolamine. Triethanolamine is preferable in terms of water solubility. preferable.
- the blending amount of the component (B) is preferably 20% by mass or more and 40% by mass or less, and more preferably 25% by mass or more and 35% by mass or less based on the total amount of the water-soluble metalworking fluid.
- the blending amount of the component (B) is less than 20% by mass, the synergistic effect (formation of salt) with the component (A) is poor, and the lubricity may not be sufficiently exhibited when the oil agent is diluted with water.
- the blending amount of the component (B) exceeds 40% by mass, the blending amount is too large with respect to the component (A), and the lubricity as a metalworking fluid cannot be sufficiently exhibited.
- the component (C) is a water-soluble polymer, and imparts lubricity to the metal surface when the oil agent is diluted with water and used as a metal processing oil agent in metal processing. Furthermore, when the metal working fluid of the present invention is applied to a metal plate coated with a hydrophilic substance, it functions to control the solubility of the hydrophilic substance.
- the water-soluble polymer that can be used as the component (C) is not particularly limited as long as the mass average molecular weight is 200 or more. Therefore, the water-soluble polymer in the present invention includes those having a molecular weight that is generally not recognized as a polymer.
- the preferred mass average molecular weight of the water-soluble polymer in the present invention is 200 or more and 70,000 or less, and more preferably 250 or more and 70,000 or less. When the mass average molecular weight is less than 200, the above-described effects cannot be sufficiently achieved. Such a mass average molecular weight can be measured, for example, by gel chromatography.
- water-soluble polymer examples include polyalkylene glycol, polyvinyl alcohol, polyvinyl amine, polyvinyl pyrrolidone, polyethylene imine, and polyacrylamide as synthetic polymers.
- Natural water-soluble polymers include agar, alginic acids (alginic acid, alginate), carrageenan, xanthan gum, native gellan gum, deacylated gellan gum, macrohomopsis gum, curdlan, pullulan, galactomannan (guar gum, locust Bean gum, tara gum, cassia gum, etc.), tamarind seed gum, psyllium seed gum, glucomannan, tragacanth gum, karaya gum, gum arabic, gati gum, pectin, water-soluble hemicellulose, soybean polysaccharide, methylcellulose (MC), hydroxypropylcellulose (HPC) Cellulose derivatives such as hydroxypropylmethylcellulose (HPMC), carboxymethylcellulose (CMC) sodium, hydroxy
- polyalkylene glycol is preferable because the molecular weight and water solubility can be easily controlled.
- Polyalkylene glycols having various structures can be used.
- R 1 is a hydrogen atom, a hydrocarbyl group having 1 to 10 carbon atoms, an oxygen-containing hydrocarbyl group having 2 to 10 carbon atoms, an acyl group having 2 to 10 carbon atoms, and a carbon number 1 having 2 to 6 bonding parts
- R 2 is an alkylene group having 2 to 4 carbon atoms
- R 3 is a hydrogen atom, a hydrocarbyl group having 1 to 10 carbon atoms, an oxygen-containing hydrocarbyl group having 2 to 10 carbon atoms
- n1 is an integer of 1 to 6
- m1 is a number 1 having 2 to 6
- the hydrocarbyl group in R 1 and R 3 may be linear, branched or cyclic.
- Specific examples of the hydrocarbyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, various butyl groups, various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, various nonyl groups, and various decyl groups.
- alkyl groups such as a cyclopentyl group and a cyclohexyl group.
- the preferred hydrocarbyl group has 1 to 6 carbon atoms.
- the oxygen-containing hydrocarbyl group include a tetrahydrofurfuryl group.
- the alkyl group part of the acyl group in R 1 and R 3 may be linear, branched or cyclic.
- specific examples of the alkyl group portion of the acyl group various groups having 1 to 9 carbon atoms exemplified as specific examples of the alkyl group can be exemplified.
- R 1 and R 3 are both hydrocarbyl groups, oxygen-containing hydrocarbyl groups, or acyl groups, R 1 and R 3 may be the same or different from each other.
- n1 is 2 or more, a plurality of R 3 in one molecule may be the same or different.
- R 1 is a hydrocarbyl group having 1 to 10 carbon atoms having 2 to 6 bonding sites
- the hydrocarbyl group may be a chain or a cyclic one.
- the hydrocarbyl group having two bonding sites include alkylene such as ethylene group, propylene group, butylene group, pentylene group, hexylene group, heptylene group, octylene group, nonylene group, decylene group, cyclopentylene group, and cyclohexylene group. Groups.
- hydrocarbyl group having 3 to 6 binding sites examples include trimethylolpropane, glycerin, pentaerythritol, sorbitol; 1,2,3-trihydroxycyclohexane; 1,3,5-trihydroxycyclohexane
- excluded the hydroxyl group from alcohol can be mentioned.
- R 2 in the formula (1) is an alkylene group having 2 to 4 carbon atoms, and examples of the oxyalkylene group of the repeating unit include an oxyethylene group, an oxypropylene group, and an oxybutylene group.
- the oxyalkylene groups in one molecule may be the same or two or more oxyalkylene groups may be contained, but those containing at least an oxypropylene unit in one molecule are preferred, and in particular, oxyalkylene units. Those containing 50 mol% or more of oxypropylene units are preferred.
- N1 in the formula (1) is an integer of 1 to 6, and is determined according to the number of R 1 binding sites.
- n 1 is 1, and when R 1 is an aliphatic hydrocarbon group having 2, 3, 4, 5 and 6 binding sites, n 1 is 2, 3 respectively. 4, 5 and 6. Further, m1 is a number with an average value of m1 ⁇ n1 being 6 to 80.
- the polyalkylene glycol represented by the formula (1) includes a polyalkylene glycol having a hydroxyl group at the terminal.
- Specific examples of the polyalkylene glycol include polypropylene glycol, polyethylene glycol, pentaerythritol ether of polyethylene glycol, and polyoxypropylene-polyoxyethylene copolymer.
- a copolymer composed of a polyoxypropylene (PO) unit and a polyoxyethylene (EO) unit either a random polymer or a block polymer may be used.
- PO polyoxypropylene
- EO polyoxyethylene
- the blending amount of the water-soluble polymer as the component (C) is preferably 1 to 15% by mass, more preferably 5 to 10% by mass based on the total amount of the oil agent. If the blending amount is less than 1% by mass, a friction reducing effect cannot be expected, which is not preferable. On the other hand, if the blending amount exceeds 15% by mass, an effect cannot be expected for the blending amount, which is not economical.
- Component (D) is water for preparing the present oil agent (stock solution) and may be tap water, but it is preferable to use distilled water or ion-exchanged water.
- the proportion of water for preparing the stock solution is preferably 10 to 80% by mass. When the proportion of water is less than 10% by mass, it becomes difficult to dissolve the components (A) to (C), and the preparation of the stock solution becomes complicated. Moreover, when the ratio of the water for stock solution preparation exceeds 80 mass%, the storage amount and transport amount as stock solution will become excessive, and handling property will fall. Therefore, the amount of water in the stock solution is preferably 20 to 60% by mass.
- the water-soluble metalworking fluid (stock solution) of the present invention is used by diluting 2 to 200 times (volume ratio), preferably 5 to 100 times with water.
- the water-soluble metalworking fluid of the present invention may further contain an acidic phosphate ester or phosphite ester from the viewpoint of improving lubricity.
- the acidic phosphate ester include 2-ethylhexyl acid phosphate, ethyl acid phosphate, butyl acid phosphate, oleyl acid phosphate, tetracosyl acid phosphate, isodecyl acid phosphate, lauryl acid phosphate, tridecyl acid phosphate, stearyl acid phosphate , Isostearyl acid phosphate and the like.
- phosphites examples include triethyl phosphite, tributyl phosphite, triphenyl phosphite, tricresyl phosphite, tri (nonylphenyl) phosphite, tri (2-ethylhexyl) phosphite, tridecyl phosphite, tridecyl phosphite Examples thereof include lauryl phosphite, triisooctyl phosphite, diphenylisodecyl phosphite, tristearyl phosphite, and trioleyl phosphite. These acidic phosphate esters and phosphite esters may be used alone or in combination with each other, but the total amount added to the oil is preferably about 1 to 15% by mass.
- the water-soluble metalworking fluid of the present invention can further contain a metal deactivator (corrosion-resistant agent), an antioxidant, an oily agent and an antifoaming agent as long as the object of the present invention is not impaired.
- a metal deactivator corrosion-resistant agent
- an antioxidant an oily agent
- an antifoaming agent as long as the object of the present invention is not impaired.
- the metal deactivator include benzotriazole, imidazoline, pyrimidine derivatives, thiadiazole, thiadiazole and the like. One of these may be used alone, or two or more may be used in combination.
- the blending amount in the oil is preferably about 0.01 to 1% by mass based on the total amount of the oil.
- phenolic antioxidants and amine antioxidants can be used as the antioxidant.
- examples of phenolic antioxidants include 2,6-di-tert-butyl-4-methylphenol; 2,6-di-tert-butyl-4-ethylphenol; 2,4,6-tri-tert-butylphenol.
- 2,6-di-tert-butyl-4-hydroxymethylphenol 2,6-di-tert-butylphenol; 2,4-dimethyl-6-tert-butylphenol; 2,6-di-tert-butyl-4 -(N, N-dimethylaminomethyl) phenol; 2,6-di-tert-amyl-4-methylphenol; n-octadecyl 3- (4-hydroxy-3,5-di-tert-butylphenyl) propionate, etc.
- Monocyclic phenols 4,4′-methylenebis (2,6-di-tert-butylphenol); 4,4′-isopropyl Redenbis (2,6-di-tert-butylphenol); 2,2'-methylenebis (4-methyl-6-tert-butylphenol); 4,4'-bis (2,6-di-tert-butylphenol); 4 2,4'-bis (2-methyl-6-tert-butylphenol); 2,2'-methylenebis (4-ethyl-6-tert-butylphenol); 4,4'-butylidenebis (3-methyl-6-tert-butyl-) Butylphenol); 2,2'-thiobis (4-methyl-6-tert-butylphenol); 4,4'-thiobis (3-methyl-6-tert-butylphenol) and the like.
- amine-based antioxidants include diphenylamine-based compounds, specifically diphenylamine and monooctyldiphenylamine; monononyldiphenylamine; 4,4′-dibutyldiphenylamine; 4,4′-dihexyldiphenylamine; 4,4′-dioctyl.
- the diphenylamine type is more preferable than the naphthylamine type in view of the effect, and in particular, an alkylated diphenylamine having an alkyl group having 3 to 20 carbon atoms, particularly 4,4′-di (C 3 -C 20 alkyl).
- Diphenylamine is preferred.
- 1 type (s) or 2 or more types chosen from the said phenolic antioxidant and amine antioxidant can be used as antioxidant.
- the blending amount is about 0.01 to 5% by mass on the basis of the total amount of the composition in terms of the balance between the antioxidant effect and economic efficiency.
- oily agent examples include fatty alcohols, fatty acid compounds such as fatty acids and fatty acid metal salts, ester compounds such as polyol esters, sorbitan esters, and glycerides, and amine compounds such as aliphatic amines.
- ester compounds such as polyol esters, sorbitan esters, and glycerides
- amine compounds such as aliphatic amines.
- antifoaming agent include methyl silicone oil, fluorosilicone oil, and polyacrylate.
- the water-soluble metalworking fluid of the present invention is appropriately diluted in water so as to have an appropriate concentration according to the purpose of use, and includes punching, cutting, grinding, polishing, drawing, drawing, It can be suitably used in various metal processing fields such as rolling.
- the water-soluble metalworking fluid of the present invention is excellent in lubricity regardless of the dilution concentration, not only soft aluminum plates such as aluminum fin materials but also hard iron plates such as carbon steel (S45C thin plate, etc.) Is also suitable. Furthermore, even if the surface of the aluminum fin material or the like is coated with a hydrophilic substance, the lubricity is not impaired.
- Polyalkylene glycol A A block copolymer represented by (EO) n- (PO) m- (EO) n was used.
- (EO) n is made of a polymer of ethylene oxide
- (PO) m is made of a polymer of propylene oxide.
- n is about 5 and m is about 35. Both terminal groups are hydroxyl groups.
- Polyalkylene glycol B (Nihon Emulsifier Co., Ltd. PNT-40) Polyethylene glycol pentaerythritol ether was used.
- Test machine Reciprocating friction tester (Orientec Co., Ltd.)
- Test piece Pre-coated aluminum fin material for heat exchanger (Polyethylene glycol is applied to the surface as a hydrophilic film)
- Test conditions Liquid temperature: 70 ° C Load: 3kgf (29N)
- a friction coefficient is an average value when measuring about three test pieces each in an Example, a comparative example, and a reference example.
- the metalworking fluid of the present invention uses a predetermined water-soluble metalworking fluid diluted with water, so that when applied to an aluminum fin material, the fin material surface has a hydrophilic film. Even if it does, it exhibits excellent lubricity.
- the water-soluble metalworking fluid of the present invention has no problem with the stock solution stability and the diluted solution stability after dilution with water.
- the oil agents of Comparative Examples 1 to 3 lacking at least one of the component (A), the component (B), and the component (C), which are essential components in the present invention are used after diluted with water. In addition, none of them can exhibit lubricity.
- the metal working fluid of the present invention can be suitably used for forming metal plates such as aluminum and iron.
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- Organic Chemistry (AREA)
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Abstract
Description
一方、オイル系金属加工油剤は、乾燥性が十分ではなく熱風による高温乾燥が必要であるため、火災防止への対応も必要である。また、VOC(Volatile Organic Compounds:揮発性有機化合物)による作業者や環境への負荷も問題となる。そこで、冷却性、浸潤性に優れ、火災の危険がなく、環境への負荷も低い水溶性金属加工油剤が多用されるようになってきた。そして、前記したような親水性表面を有するアルミニウム板に対しても水溶性金属加工油剤が用いられる場合がある。
(1)下記の(A)成分、(B)成分、(C)成分および(D)成分を配合してなることを特徴とする水溶性金属加工油剤。
(A)炭素数8以上18以下のカルボン酸
(B)トリアルカノールアミン
(C)質量平均分子量が200以上である水溶性ポリマー
(D)水
(2)上述の(1)に記載の水溶性金属加工油剤において、前記各成分の配合量が該水溶性金属加工油剤全量基準で下記の通りであることを特徴とする水溶性金属加工油剤。
(A)成分:20質量%以上、40質量%以下
(B)成分:20質量%以上、40質量%以下
(C)成分:1質量%以上、15質量%以下
(D)成分:10質量%以上、80質量%以下
(3)上述の(1)または(2)に記載の水溶性金属加工油剤において、前記(C)成分が非イオン系界面活性剤であることを特徴とする水溶性金属加工油剤。
(4)上述の(3)に記載の水溶性金属加工油剤において、前記非イオン系界面活性剤がポリアルキレングリコール構造を有することを特徴とする水溶性金属加工油剤。
(5)上述の(1)から(4)までのいずれか1つに記載の水溶性金属加工油剤において、さらに、酸性リン酸エステル、亜リン酸エステルおよび金属不活性化剤のうち少なくともいずれか1種を配合してなることを特徴とする水溶性金属加工油剤。
(6)上述の(1)から(5)までのいずれか1つに記載の水溶性金属加工油剤に対し、容量比で2~200倍の水で希釈したことを特徴とする金属加工油剤。
(7)上述の(6)に記載の金属加工油剤がアルミニウム加工用であることを特徴とする金属加工油剤。
(A)炭素数8以上18以下のカルボン酸
(B)トリアルカノールアミン
(C)質量平均分子量が200以上である水溶性ポリマー
(D)水
カルボン酸としては、モノカルボン酸でもポリカルボン酸(二塩基酸等)でもよい。また、カルボン酸としては芳香族カルボン酸と脂肪酸があるが、水溶性および潤滑性の観点より脂肪酸(脂肪族カルボン酸)が好適である。カルボン酸としては、飽和脂肪酸でも不飽和脂肪酸でもよい。
具体的には、飽和脂肪酸として、カプリル酸(オクタン酸)、ペラルゴン酸(ノナン酸)、カプリン酸(デカン酸)、ラウリン酸(ドデカン酸)、ミリスチン酸 (テトラデカン酸)、パルミチン酸(ヘキサデカン酸)、マルガリン酸(ヘプタデカン酸)、ステアリン酸(オクタデカン酸)などが挙げられる。また、これらの脂肪酸は、直鎖構造に限らずイソオクタン酸やネオデカン酸のようにすべての分岐型異性体を含む。不飽和脂肪酸としては、オクテン酸、デセン酸、ドコセン酸、オレイン酸などが挙げられる。直鎖構造に限らずすべての分岐型異性体を含むことは飽和脂肪酸と同様である。
特に上記したイソノナン酸は、油剤(原液)を水で希釈した時、固形物が液面にできるのを低減する効果(硬水安定性)に優れている。
また、脂肪酸の主鎖を構成するアルキル基としては耐腐敗性の点で分岐構造を有するものが好ましい。特に上記したイソノナン酸は、油剤(原液)を水で希釈した時、固形物が液面にできるのを低減する効果(硬水安定性)にも優れている。
脂肪酸としては二塩基酸を用いた方が塩として用いた場合に防錆性に優れるが、原液の安定性(不溶化しにくいこと)の観点からは、二塩基酸と一塩基酸とを混合して使用することも好ましい。
このようなアルカノールアミンとしては、例えば、トリエタノールアミン、トリ-n-プロパノールアミン、トリ-i-プロパノールアミン、およびトリ-n-ブタノールアミンなどが挙げられるが、水溶性の点でトリエタノールアミンが好ましい。
(C)成分として使用可能な水溶性ポリマーは質量平均分子量が200以上であれば特に制限されない。従って、本発明における水溶性ポリマーには、一般に高分子として認識されていない分子量のものも含まれる。本発明における水溶性ポリマーの好ましい質量平均分子量は、200以上70,000以下であり、250以上70,000以下であることがより好ましい。質量平均分子量が200未満であると、前記した効果を十分に奏することができない。なお、このような質量平均分子量は、例えばゲルクロマトグラフィーによって測定することができる。
R1-[(OR2)m1-OR3]n1 (1)
(式中、R1は水素原子、炭素数1~10のヒドロカルビル基、炭素数2~10の含酸素ヒドロカルビル基、炭素数2~10のアシル基および結合部2~6個を有する炭素数1~10のヒドロカルビル基のいずれかである。R2は炭素数2~4のアルキレン基、R3は水素原子、炭素数1~10のヒドロカルビル基、炭素数2~10の含酸素ヒドロカルビル基、および炭素数2~10のアシル基のいずれかである。n1は1~6の整数、m1はm1×n1の平均値が6~80となる数を示す。)
また、R1、R3における該アシル基のアルキル基部分は直鎖状、分岐鎖状、環状のいずれであってもよい。該アシル基のアルキル基部分の具体例としては、上記アルキル基の具体例として挙げた炭素数1~9の種々の基を同様に挙げることができる。
R1およびR3が、いずれもヒドロカルビル基、含酸素ヒドロカルビル基、またはアシル基である場合には、R1とR3は同一であってもよいし、互いに異なっていてもよい。
さらにn1が2以上の場合には、1分子中の複数のR3は同一であってもよいし、異なっていてもよい。
前記式(1)中のn1は1~6の整数で、R1の結合部位の数に応じて定められる。例えばR1がアルキル基やアシル基の場合、n1は1であり、R1が結合部位2、3、4、5および6個を有する脂肪族炭化水素基である場合、n1はそれぞれ2、3、4、5および6となる。また、m1はm1×n1の平均値が6~80となる数である。
上述したポリアルキレングリコールとしては、非イオン型(ノニオン型)界面活性剤として知られているもののうち、質量平均分子量が200以上のものを好適に使用することができる。
なお、本発明の水溶性金属加工油剤(原液)は、水で2~200倍(容量比)、好ましくは5~100倍に希釈されて使用される。
酸性リン酸エステルとしては、例えば、2-エチルヘキシルアシッドホスフェート、エチルアシッドホスフェート、ブチルアシッドホスフェート、オレイルアシッドホスフェート、テトラコシルアシッドホスフェート、イソデシルアシッドホスフェート、ラウリルアシッドホスフェート、トリデシルアシッドホスフェート、ステアリルアシッドホスフェート、イソステアリルアシッドホスフェートなどを挙げることができる。
これらの酸性リン酸エステルや亜リン酸エステルは、各々単独でも両者を混ぜて配合してもよいが、本油剤への配合量は、合計量で1~15質量%程度が好ましい。
金属不活性化剤としては、例えば、ベンゾトリアゾール、イミダゾリン、ピリミジン誘導体、チアジアゾール、およびチアジアゾール等が挙げられる。これらの1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。油剤への配合量は油剤全量基準で0.01~1質量%程度が好ましい。
フェノール系酸化防止剤としては、例えば2,6-ジ-tert-ブチル-4-メチルフェノール;2,6-ジ-tert-ブチル-4-エチルフェノール;2,4,6-トリ-tert-ブチルフェノール;2,6-ジ-tert-ブチル-4-ヒドロキシメチルフェノール;2,6-ジ-tert-ブチルフェノール;2,4-ジメチル-6-tert-ブチルフェノール;2,6-ジ-tert-ブチル-4-(N,N-ジメチルアミノメチル)フェノール;2,6-ジ-tert-アミル-4-メチルフェノール;n-オクタデシル3-(4-ヒドロキシ-3,5-ジ-tert-ブチルフェニル)プロピオネートなどの単環フェノール類、4,4’-メチレンビス(2,6-ジ-tert-ブチルフェノール);4,4’-イソプロピリデンビス(2,6-ジ-tert-ブチルフェノール);2,2’-メチレンビス(4-メチル-6-tert-ブチルフェノール);4,4’-ビス(2,6-ジ-tert-ブチルフェノール);4,4’-ビス(2-メチル-6-tert-ブチルフェノール);2,2’-メチレンビス(4-エチル-6-tert-ブチルフェノール);4,4’-ブチリデンビス(3-メチル-6-tert-ブチルフェノール);2,2’-チオビス(4-メチル-6-tert-ブチルフェノール);4,4’-チオビス(3-メチル-6-tert-ブチルフェノール)などの多環フェノール類などが挙げられる。
本発明においては、酸化防止剤として、前記フェノール系酸化防止剤及びアミン系酸化防止剤の中から選ばれる1種又は2種以上を用いることができる。また、その配合量は、酸化防止効果および経済性のバランスなどの面から、組成物全量基準で、0.01~5質量%程度である。
〔実施例1~2、比較例1~3、参考例〕
表1に示す配合処方により水溶性金属加工油剤(原液)を調製した。各成分の詳細は以下の通りである。
(EO)n-(PO)m-(EO)nで示されるブロック型共重合体を用いた。ここで、(EO)nはエチレンオキサイドの重合体からなり、(PO)mは、プロピレンオキサイドの重合体からなる。nは、約5であり、mは約35である。なお、両末端基とも水酸基である。
2)ポリアルキレングリコールB(株式会社日本乳化剤社製 PNT-40)
ポリエチレングリコールペンタエリスリトールエーテルを用いた。
(1)潤滑性(摩擦係数)
参考例を除き、原液をイオン交換水で50倍(容量比)に希釈した後、試験片に塗布して、下記に示す往復動摩擦試験により動摩擦係数(μ)を求めた。なお、参考例として、イオン交換水だけを用いた試験も行った。
試験機 :往復動摩擦試験機(株式会社オリエンテック社製)
試験片 :熱交換器用プレコートアルミニウムフィン材
(表面に親水性膜としてポリエチレングリコールが塗布)
試験条件:
液温:70℃
荷重:3kgf(29N)
摺動速度:20mm/s
振幅:50mm
この条件で、摺動1回目の最も高い摩擦係数を読み取った。なお、摩擦係数は、実施例、比較例および参考例とも各々3枚の試験片について測定したときの平均の値である。
ビーカー内に原液の各成分を入れ、スターラーで攪拌しながら混合させ均一な溶液とした。溶液を1晩静置した後、ビーカー中の溶液の様子を目視で観察し、以下の基準で原液安定性を評価した。
A:溶解している。
B:分散している(曇りがある)
C:固まっている。
ビーカー内に原液の各成分を入れ、スターラーで攪拌しながら混合させ均一な溶液とした(原液調製)。100mLメスシリンダーに98mLの水を入れ、次に原液2mLを加えて希釈した。メスシリンダーを3回上下に振った後、溶液を1晩静置した。メスシリンダー中の溶液の様子を目視で観察し、以下の基準で希釈液安定性を評価した。
A:溶解している。
B:分散している(曇りがある)
表1の結果より、本発明の金属加工油剤は、所定の水溶性金属加工油剤を水で希釈して使用しているので、アルミニウムフィン材に適用した場合、フィン材表面が親水性膜を有していても優れた潤滑性を発揮する。また、本発明の水溶性金属加工油剤は、原液安定性や、水で希釈後の希釈液安定性にも問題がない。
一方、本発明における必須の構成要素である(A)成分、(B)成分、(C)成分の少なくともいずれかを欠いている比較例1~3の油剤は、水で希釈して使用した場合に、いずれも潤滑性を発揮できていない。
Claims (7)
- 下記の(A)成分、(B)成分、(C)成分および(D)成分を配合してなる
ことを特徴とする水溶性金属加工油剤。
(A)炭素数8以上18以下のカルボン酸
(B)トリアルカノールアミン
(C)質量平均分子量が200以上である水溶性ポリマー
(D)水 - 請求項1に記載の水溶性金属加工油剤において、
前記各成分の配合量が該水溶性金属加工油剤全量基準で下記の通りである
ことを特徴とする水溶性金属加工油剤。
(A)成分:20質量%以上、40質量%以下
(B)成分:20質量%以上、40質量%以下
(C)成分:1質量%以上、15質量%以下
(D)成分:10質量%以上、80質量%以下 - 請求項1または請求項2に記載の水溶性金属加工油剤において、
前記(C)成分が非イオン系界面活性剤である
ことを特徴とする水溶性金属加工油剤。 - 請求項3に記載の水溶性金属加工油剤において、
前記非イオン系界面活性剤がポリアルキレングリコール構造を有する
ことを特徴とする水溶性金属加工油剤。 - 請求項1から請求項4までのいずれか1項に記載の水溶性金属加工油剤において、
さらに、酸性リン酸エステル、亜リン酸エステルおよび金属不活性化剤のうち少なくともいずれか1種を配合してなる
ことを特徴とする水溶性金属加工油剤。 - 請求項1から請求項5までのいずれか1項に記載の水溶性金属加工油剤に対し、
容量比で2~200倍の水で希釈した
ことを特徴とする金属加工油剤。 - 請求項6に記載の金属加工油剤がアルミニウム加工用である
ことを特徴とする金属加工油剤。
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JP5898554B2 (ja) * | 2012-03-30 | 2016-04-06 | 出光興産株式会社 | 金属加工用潤滑油組成物 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019189148A1 (ja) * | 2018-03-30 | 2019-10-03 | 出光興産株式会社 | 水溶性金属加工油剤および金属加工方法 |
JPWO2019189148A1 (ja) * | 2018-03-30 | 2021-03-25 | 出光興産株式会社 | 水溶性金属加工油剤および金属加工方法 |
Also Published As
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SG174276A1 (en) | 2011-10-28 |
MY157838A (en) | 2016-07-29 |
CN102348788A (zh) | 2012-02-08 |
SG10201402818QA (en) | 2014-08-28 |
TW201043688A (en) | 2010-12-16 |
KR20110136806A (ko) | 2011-12-21 |
TWI485239B (zh) | 2015-05-21 |
JP5576615B2 (ja) | 2014-08-20 |
JP2010209246A (ja) | 2010-09-24 |
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