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
  • C10M105/72—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing sulfur, selenium or tellurium
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
  • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
  • C10M105/22—Carboxylic acids or their salts
  • C10M105/24—Carboxylic acids or their salts having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
• • 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
  • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
  • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
  • C10M129/04—Hydroxy compounds
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
  • C10M169/04—Mixtures of base-materials and additives
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M173/00—Lubricating compositions containing more than 10% water
  • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
• • 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
  • C10M2207/02—Hydroxy compounds
  • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
  • C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy 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
  • 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
• • 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
• • 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
• • 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
  • C10M2215/22—Heterocyclic nitrogen compounds
  • C10M2215/223—Five-membered rings containing nitrogen and carbon only
• • 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
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
  • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
  • C10M2219/085—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing carboxyl groups; Derivatives thereof
• • 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
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
  • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
• • 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
  • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
  • C10M2229/02—Unspecified siloxanes; Silicones
• • 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
• • 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
• • 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
  • C10N2040/22—Metal working with essential removal of material, e.g. cutting, grinding or drilling
• • C10N2240/401—

Definitions

• the present invention relates to a water-soluble metalworking fluid and a metalworking coolant provided by diluting the fluid with water.
• a metalworking fluid used in metalworking is generally categorized into oil-type (oil-based) fluid and water-type (water-based) fluid, the latter of which is more frequently used because such water-based fluid is excellent in cooling capabilities and penetration capabilities and free from a risk of causing a fire.
• a solution-type fluid not containing a mineral oil is frequently used (see, for instance, Patent Literature 1).
• the solution-type fluid exhibits favorable cooling capabilities and rot resistance, but exhibits inferior lubricity to those of non-water-type, emulsion-type and soluble-type fluids.
• An insufficient lubricity causes deterioration in roughness of a machined surface, a decrease in lifetime of a grinding stone, or grinding burn.
• An object of the invention is to provide a water-soluble metalworking fluid exhibiting excellent lubricity and wear resistance even under severe machining conditions, and a metalworking coolant provided by diluting the water-soluble metalworking fluid with water.
• the inventors have found that a system including a dicarboxylic acid having a sulfide structure and a long-chain carboxylic acid is excellent n both of lubricity and wear resistance when PAG is preferably excluded from the system.
• the invention has been reached based on this finding.
• the invention provides a water-based metalworking fluid and a metalworking coolant as follows.
• a water-soluble metalworking fluid contains a component (A) that is a dicarboxylic acid including a sulfide structure and a component (B) that is a monocarboxylic acid, in which the fluid contains no polyalkylene glycol.
• a water-soluble metalworking coolant is provided by diluting the above-mentioned water-soluble metalworking fluid with water by 2 to 200 times in volume.
• the water-soluble metalworking fluid (undiluted solution) contains the component (A) that is a dicarboxylic acid including a sulfide structure and the component (B) that is a monocarboxylic acid but does not contain a polyalkylene glycol
• the water-soluble metalworking fluid exhibits favorable lubricity and wear resistance in a form of a metalworking coolant provided by diluting the fluid with water. Accordingly, when the metalworking coolant according to the above aspect of the invention is used for grinding, the metalworking coolant is unlikely to cause deterioration in roughness of a machined surface even under severe machining conditions, so that grinding burn and a decrease in lifetime of the grinding stone can be sufficiently restrained.
• a water-soluble metalworking fluid in an exemplary embodiment of the invention (hereinafter, also referred to as “the present fluid”) is an undiluted solution provided by blending a component (A) that is a dicarboxylic acid including a sulfide structure and a component (B) that is a monocarboxylic acid, in which the present fluid contains no polyalkylene glycol.
• the present fluid and a metalworking coolant provided by diluting the present fluid with water be described in detail below.
• a component (A) of the present fluid is a dicarboxylic acid including a sulfide structure and provides lubricity.
• a dicarboxylic acid represented by a formula (1) below is particularly excellent in lubricity.
• R 1 and R 2 each are a hydrocarbon group having 1 to 5 carbon atoms. n is an integer from 1 to 8. When R 1 and R 2 each contain 6 or more carbon atoms, water solubility may be deteriorated.
• the total number of the carbon atoms in the dicarboxylic acid of the formula (1) is in a range from 4 to 12, however, is preferably in a range from 6 to 10 in terms of water solubility and lubricity.
• R 1 and R 2 each are preferably an alkylene group, examples of which include a methylene group, ethylene group, methylethylene group, propylene group, and butylene group. An ethylene group is particularly preferable in terms of water solubility and lubricity.
• n 9 or more, the dicarboxylic acid becomes structurally unstable and may be decomposed. Accordingly, n is preferably 6 or less, more preferably 2 or less, further preferably 1.
• dicarboxylic acid examples include thiodipropionic acid, dithiodipropionic acid, thiodiacetate, thiodisuccinate, dithiodiacetate, and dithiodibutyrate.
• a content of the component (A) is preferably in a range from 0.1 mass % to 14 mass % based on the total amount of the undiluted solution, more preferably from 1 mass % to 10 mass %, further preferably from 2 mass % to 5 mass %.
• rust resistance of the present fluid (undiluted solution) diluted with water may be decreased.
• a component (B) of the present fluid which is a monocarboxylic acid, contributes to improvement in lubricity and wear resistance.
• the monocarboxylic acid is preferably a so-called long-chain carboxylic acid, specifically a compound represented by a formula (2) below.
• R 3 is a hydrocarbon group having 11 or more carbon atoms.
• the hydrocarbon group may be linear or branched and saturated or unsaturated.
• Tall oil fatty acid is preferable in terms of lubricity and wear resistance.
• long-chain carboxylic acid examples include lauric acid, stearic acid, oleic acid, linolic acid, linolenic acid, erucic acid, palmitic acid, ricinoleic acid, hydroxy fatty acid (e.g., ricinoleic acid, 12-hydroxystearic acid), arachidic acid, behenic acid, melissic acid, isostearic acid, soy oil fatty acid extracted from fat and oil, coconut oil fatty acid, rape-seed oil fatty acid, and tall oil fatty acid (C18).
• a content of the component (B) is preferably in a range from 1 mass % to 20 mass % of the total amount of the present fluid in terms of lubricity and wear resistance at a typical dilution ratio.
• the present fluid is provided in a form of the undiluted solution obtained by blending the above components (A) and (B) with water, but does not contain a polyalkylene glycol (PAG).
• PAG polyalkylene glycol
• the invention encompasses an instance where a polyalkylene glycol is mixed as an impurity at a slight amount as low as the polyalkylene glycol does not damage the advantages of the invention.
• a total content of the components (A) and (B) is preferably in a range from 4 mass % to 40 mass % of the total amount of the present fluid, more preferably from 5 mass % to 15 mass %.
• the total content of the components (A) and (B) is less than 4 mass %, a decrease in lubricity (an increase in a friction coefficient) may occur if the present fluid is diluted with water at an excessively high dilution ratio at a working site.
• the total content of the components (A) and (B) exceeds 40 mass %, stability of the undiluted solution may be decreased.
• the stability of the undiluted solution means that uniformity of the undiluted solution is lost due to phase separation, undissolved mass or precipitation of solid content and the like.
• Water for preparing the undiluted solution is preferably 20 mass % to 5 mass % of the total amount of the present fluid.
• water is less than 20 mass %, dissolution of the components (A) and (B) becomes difficult and preparation of the undiluted solution becomes complicated.
• water for preparing the undiluted solution exceeds 75 mass %, an excessive amount of the undiluted solution has to be stored or transported, thereby lowering handleability.
• the fluid may be directly used, but, is preferably diluted with water at a ratio (volume ratio) of 2 to 200 times, preferably 5 to 100 times to be used as a metalworking coolant.
• the present fluid further contains a nonion-based surfactant as a component (C).
• a nonion-based surfactant as a component (C).
• an acethylene glycol surfactant is particularly preferable as the component (C) in terms of the effects.
• acethylene glycol surfactant for instance, acethylene glycol and an alkylene oxide adduct thereof disclosed in JP-A-2011-12249 are suitably usable.
• an acethylene glycol EO adduct is suitable.
• a commercially available acethylene glycol surfactant include Dynol 604, Surfynol 420 and Surfynol 465 which are manufactured by Air Products and Chemicals, Inc.
• a content of the component (C) is preferably in a range from 0.1 mass % to 20 mass % of the total amount of the undiluted solution, more preferably from 1 mass % to 10 mass %.
• the present fluid further contains alkanolamine as a component (D).
• alkanolamine reacts with the component (A) or the component (B) to form alkanolamine carboxylate, thereby improving lubricity.
• alkanolamine also serves as a rust inhibitor.
• the kind of alkanolamine is not particularly limited.
• a combination of primary, secondary and tertiary amines is usable.
• the primary amine when only the primary amine is used, since volatility of the primary amine is high, working environments may be deteriorated because of odor generation. Accordingly, when the primary amine is used, it is preferable to combine the secondary amine and/or tertiary amine with the primary amine.
• the tertiary amine is preferable in terms of odor generation.
• Examples of the primary amine are 1-amino-2-propanol, 2-amino-2-methyl-1-propanol, 1-amino-2-butanol, 2-amino-1-propanol, and 3-amino-2-butanol.
• 1-amino-2-propanol and 2-amino-2-methyl-1-propanol are particularly preferable.
• one of the above components may be used alone, or two or more thereof may be used.
• Examples of the secondary amine include diethanolamine, di(n-propanol)amine, diisopropanolamine, N-methylmonoethanolamine, N-ethylmonoethanolamine, cyclomonoethanolamine, N-n-propylmonoethanolamine, N-i-propylmonoethanolamine, N-n-butylmonoethanolamine, N-i-butylmonoethanolamine, and N-t-butylmonoethanolamine.
• one of the above components may be used alone, or two or more thereof may be used.
• tertiary amine examples include N-methyldiethanolamine, ethyldiethanolamine, triethanolamine, N-cyclohexyldiethanolamine, N-n-propyldiethanolamine, N-i-propyldiethanolamine, N-n-butyldiethanolamine, N-i-butyldiethanolamine, and N-t-butyldiethanolamine.
• One of the above components may be used alone, or two or more thereof may be used.
• a content of the component (D) is preferably in a range from 20 mass % to 55 mass % of the total amount of the present fluid (undiluted solution).
• the content of the component (D) is less than 20 mass %, rust resistance may be decreased if the present fluid is diluted with water at an excessively high dilution ratio at a working site.
• the content of the component (D) exceeds 55 mass %, the stability of the undiluted solution is lowered.
• carboxylic acid containing no sulfur as the rust inhibitor together with the component (D).
• the carboxylic acid include: a monocarboxylic acid such as caproic acid, nonane acid, isononane acid, trimethylhexanoic acid, neodecanoic acid and decane acid having 8 to 10 carbon atoms; and a dicarboxylic acid such as nonane diacid, undecanoic diacid, sebacic acid, dodecanoic diacid having 9 to 12 carbon atoms.
• the above-mentioned trimethylhexanoic acid is excellent in reducing solid substances being formed on a surface of the present fluid (hard water stability) when the present fluid (undiluted solution) is diluted with water.
• the alkyl group that is a main chain of the carboxylic acid preferably has a branched structure.
• dibasic acids are excellent in rust resistance as a salt
• dibasic acids and monobasic acids are preferably mixed in use in view of stability (unlikeliness to be insoluble) of the undiluted solution.
• the present fluid may be blended as necessary with publicly-known various kinds of additives as long as such addition is compatible with an object of the present invention.
• additives include an extreme pressure agent, oiliness agent, fungicide (preservative), metal deactivator and antifoaming agent.
• the extreme pressure agent examples include a sulfur-based extreme pressure agent, a phosphorus-based extreme pressure agent, an extreme pressure agent containing sulfur and metal, and an extreme pressure agent containing phosphorus and metal.
• One of the extreme pressure agents may be used alone or two or more thereof may be used in combination.
• the extreme pressure agent may be any extreme pressure agent, as long as the extreme pressure agent contains sulfur atoms or phosphorus atoms in its molecule and the extreme pressure agent can provide load bearing effects and wear resistance.
• the extreme pressure agent containing sulfur in its molecule examples include: sulfurized fat and oil, sulfurized fatty acid, ester sulfide, olefin sulfide, dihydrocarbyl polysulfide, a thiadiazole compound, an alkylthiocarbamoyl compound, a triazine compound, a thioterpene compound, a dialkylthiodipropionate compound and the like.
• the extreme pressure agent is blended in the undiluted solution with a content of approximately 0.05 mass % to 0.5 mass % of the total amount of the final diluted fluid (coolant).
• oiliness agent examples include: an aliphatic compound such as aliphatic alcohol and fatty acid metal salt; and an ester compound such as polyol ester, sorbitan ester and glyceride.
• an aliphatic compound such as aliphatic alcohol and fatty acid metal salt
• an ester compound such as polyol ester, sorbitan ester and glyceride.
• the oiliness agent is blended in the undiluted solution with a content of approximately 0.2 mass % to 2 mass % of the total amount of the coolant.
• the fungicide is exemplified by 2-pyridylthio-1-oxide salt.
• Examples of the fungicide are 2-pyridylthio-1-oxide sodium, zinc bis(2-pyridyldithio-1-oxide), and bis(2-sulfidepyridine-1-olato) copper.
• the fungicide is blended in the undiluted solution with a content of approximately 0.01 mass % to 5 mass % of the total amount of the coolant.
• the metal deactivator examples include benzotriazole, benzotriazole derivative, pyrimidine derivative, and thiadiazole.
• One of the metal deactivator may be used alone or two or more thereof may be used in combination. In view of blending effects, the metal deactivator is blended in the undiluted solution with a content of approximately 0.01 mass % to 3 mass % of the total amount of the coolant.
• the antifoaming agent examples include methyl silicone oil, fluorosilicone oil, polyacrylates and the like. In view of blending effects, the antifoaming agent is blended in the undiluted solution with a content of approximately 0.004 mass % to 0.08 mass % of the total amount of the coolant.
• the water-soluble metalworking fluid according to the above aspect of the invention which is diluted as necessary with water so that its concentration is adjusted suitably for the usage, is preferably applied in various metalworking fields such as grinding, cutting, polishing, squeezing, drawing, flatting and the like.
• the grinding include cylinder grinding, internal grinding, plane grinding, centerless grinding, tool grinding, honing grinding, super finishing, and special curve grinding (e.g., screw grinding, gear grinding, cum grinding, and roll grinding).
• the composition provided by blending the components (A) and (B) means not only a “composition containing the components (A) and (B)” but also a “composition containing a modified substance of at least one of the components (A) and (B) in place of the at least one of the components (A) and (B), and a “composition containing a reaction product obtained by reacting the component (A) with the component (B).”
• each of coolants obtained by diluting the undiluted solutions of Examples 1 to 2 contains the components (A) and (B) of the invention but does not contain PAG, all the coolants are excellent in lubricity and wear resistance.

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

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Publications (1)

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Cited By (1)

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• 2014
  • 2014-03-28 JP JP2014070522A patent/JP6445247B2/ja active Active
• 2015
  • 2015-03-23 US US15/128,279 patent/US20180171255A1/en not_active Abandoned
  • 2015-03-23 EP EP15769952.1A patent/EP3124584A4/en not_active Withdrawn
  • 2015-03-23 CN CN201580016334.0A patent/CN106459822B/zh active Active
  • 2015-03-23 KR KR1020167023758A patent/KR20160137982A/ko unknown
  • 2015-03-23 WO PCT/JP2015/058734 patent/WO2015146909A1/ja active Application Filing
  • 2015-03-26 TW TW104109793A patent/TW201602334A/zh unknown

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