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WO1992001029A1 - Agent de refroidissement aqueux - Google Patents

Agent de refroidissement aqueux Download PDF

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Publication number
WO1992001029A1
WO1992001029A1 PCT/US1991/004429 US9104429W WO9201029A1 WO 1992001029 A1 WO1992001029 A1 WO 1992001029A1 US 9104429 W US9104429 W US 9104429W WO 9201029 A1 WO9201029 A1 WO 9201029A1
Authority
WO
WIPO (PCT)
Prior art keywords
acid
coolant
composition
glycerine
amino
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1991/004429
Other languages
English (en)
Inventor
Robert A. Thordsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quaker Chemical Corp
Original Assignee
Quaker Chemical Corp
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Filing date
Publication date
Application filed by Quaker Chemical Corp filed Critical Quaker Chemical Corp
Publication of WO1992001029A1 publication Critical patent/WO1992001029A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/20—Antifreeze additives therefor, e.g. for radiator liquids
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/02—Water
    • 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
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • 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
    • C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
    • C10M2207/123—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms polycarboxylic
    • 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
    • C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more 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
    • C10M2207/22—Acids obtained from polymerised unsaturated 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
    • 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
    • C10M2215/044—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms having cycloaliphatic 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
    • C10M2215/08—Amides [having hydrocarbon substituents containing less than thirty 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/08—Amides [having hydrocarbon substituents containing less than thirty carbon atoms]
    • C10M2215/082—Amides [having hydrocarbon substituents containing less than thirty carbon atoms] containing hydroxyl groups; Alkoxylated derivatives
    • 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
    • C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
    • C10M2215/28—Amides; Imides
    • 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
    • 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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/01—Emulsions, colloids, or micelles

Definitions

  • This invention relates to an aqueous coolant for cooling and protecting a metal workpiece and a metalworking apparatus or device from corrosion and rust during metalworking. More particularly, the present invention relates to an aqueous coolant for cooling and protecting a metal workpiece and a metalworking apparatus or device from corrosion and rust during metalworking, for example, machining and grinding and any metal-removing or metal- forming operation, comprising a composition containing sebacic acid, glycerine, isononanoic acid and 6-[(l- oxoisonony1) mino]hexanoic acid.
  • Aqueous coolants for cooling and protecting a metal workpiece and a metalworking apparatus or device from corrosion and rust during metalworking operations or procedures, for example, machining and grinding and metal- removing or metal-forming operations are generally well known in the art.
  • prior art aqueous coolants typically contain undesired ingredients, including free amines, for example, monoethanolamine, diethanolamine and triethanolamine, nitrites, phosphates, sulfur, chlorine or boron. These ingredients may impart undesirable properties to the coolant.
  • free amines for example, monoethanolamine, diethanolamine and triethanolamine, nitrites, phosphates, sulfur, chlorine or boron.
  • These ingredients may impart undesirable properties to the coolant.
  • coolants containing free amines may cause dermatitis to the skin of an individual who comes in contact with the free a ine-containing coolant.
  • the free amines in the free amine-containing coolants may also result in the coolants having objectionable odors.
  • free amines and nitrites in aqueous coolants containing both free amines and nitrites may react to form nitrosamines, which are known carcinogens.
  • the free amines may also react with nitrous oxides in the air to form nitrosamines.
  • the free amines typically used, mono-, di- and triethanolamine are themselves health hazards, causing burning to mucous membranes and skin. These undesired ingredients may also cause waste disposal difficulties of the coolant after use.
  • U.S. Patent 4,452,715 discloses an aqueous alcohol coolant composition having a pH of about 9 to about 10.5 to inhibit the corrosion of iron and solder.
  • the composition may contain chlorine and free amines, but is free of phosphate and borate compounds and comprises an inorgance silicate, a water-soluble nitrite, a water-soluble triazole or thiazole and a water-soluble carbonate.
  • U.S. Patent 4,348,302 discloses an anticorrosive agent stable to hard water consisting of an alkali metal salt, alkaline earth metal salt or amine salt of an amido carboxylic acid.
  • the anticorro ⁇ ives may be used in admixture with known metal processing liquids for aqueous oil emulsions and can be applied in the form of aqueous solutions, dispersions or emulsions.
  • U.S. Patent 4,342,658 discloses a water-based hydraulic fluid or metalworking composition comprising a mixture of a phosphate ester, a polyethylene ester, polyester of an oxyalkaline compound and an alkyl dialkanolamide.
  • This reference discloses using sebacic acid to prepare the alkyl dialkanolamide ⁇ and glycerol which are ethoxylated and subsequently esterified to produce the esters of ethoxylated aliphatic alcohols, useful as components of the hydraulic fluids.
  • Additives may be used in the disclosed compositions, including amines and nitrites.
  • U.S. Patent 4,578,208 discloses compositions for cleaning and passivating metals comprising at least one phosphoric acid ester, at least one alkanolamine and/or alkanolamine salt, at least one ⁇ prayable non-ionic surfactant and optionally building, complexing agents and/or biocides.
  • the aqueous cleaning solutions of the invention have a pH range of about 7.5 to about 10.5.
  • the present invention overcomes the aforementioned problems associated with the prior art aqueous coolants containing free amines, nitrites, phosphates, sulfur, chlorine or boron.
  • the aqueous compositions and coolants containing the composition of the present invention effectively and efficiently cool and protect a metal workpiece from corrosion and rust during metalworking, and have improved corrosion protection properties over the aqueous coolants of the prior art.
  • the aqueous compositions and coolants containing the composition of the present invention also effectively and efficiently cool and protect the metalworking apparatus or device used to work the metal during the metalworking operations or procedures.
  • the aqueous coolant and/or composition of the present invention contains no free amines, nitrites, phosphates, sulfur, chlorine or boron.
  • One aspect of the invention relates to a composition
  • a composition comprising about 5 to about 20% sebacic acid, about 2 to about 15% glycerine, about 9 to about 27% isononanoic acid, about 1 to about 3% 6-[(1-oxoisononyl)- amino]hexanoic acid, an amount of KOH to provide the composition with a pH of about 10 to about 10.5, and water.
  • Another aspect of the invention relates to a process for cooling and protecting a metal workpiece from corrosion and rust during metalworking comprising providing a concentrate comprising about 5 to about 20% sebacic acid, about 2 to about 15% glycerine, about 9 to about 27% isononanoic acid, about 1 to about 3% 6-[ (1-oxoisononyl)- amino]hexanoic acid, an amount of KOH to provide the concentrate with a pH of about 10 to about 10.5, and water, diluting the concentrate with additional water to about 1:20 to about 1:40 to provide a coolant having a pH of about 9.5 or less, and working the metal in the presence of the coolant.
  • Still another aspect of the invention relates to a process for cooling and protecting a metal workpiece from corrosion and rust during metalworking comprising providing a coolant comprising about 0.125 to about 1% sebacic acid, about 0.05 to about 0.75% glycerine, about 0.225 to about 1.35% isononanoic acid, about 0.025 to about 0.15% 6-[(l- oxoisononyl)amino]hexanoic acid, an amount of KOH to provide the coolant with a pH of about 9.5 or less, and water, and working the metal in the presence of the coolant.
  • a coolant comprising about 0.125 to about 1% sebacic acid, about 0.05 to about 0.75% glycerine, about 0.225 to about 1.35% isononanoic acid, about 0.025 to about 0.15% 6-[(l- oxoisononyl)amino]hexanoic acid, an amount of KOH to provide the coolant with a pH of about 9.5
  • % or “percent” means the weight percent of the particular ingredient or component in the composition or coolant as described unless otherwise indicated or clear from the context of the description.
  • the present invention relates to an aqueous composition and a coolant formed therefrom for cooling and protecting a metal workpiece from corrosion and rust during metalworking.
  • the present invention also relates to an aqueous composition and coolant formed therefrom for cooling and protecting a metalworking apparatus or device from corrosion and rust during metalworking.
  • the "coolant” of the present invention is an aqueous dilution of the "composition" of the present invention.
  • composition is a concentrate which should be diluted with water to form a "coolant" when used in metalworking procedures.
  • the concentrated composition is the form of the present invention preferred for preparation and shipping.
  • aqueous coolants for cooling and protecting a metal workpiece and a metalworking apparatus or device from corrosion and rust during metalworking contain undesirable ingredients or chemicals, for example, free amines, nitrites, phosphates, sulfur, chlorine and/or boron. These chemicals or ingredients may cause difficulty during use of the coolant or during disposal.
  • coolants containing free amines may cause dermititis to the user and may have an obnoxious odor.
  • free amines and nitrites may react to form carcinogenic nitrosamines and free amines and nitrous oxides from the air may react to form carcinogenic nitrosamines, and the free amines typically used, for example, mono-, di- and triethanolamine, are themselves health hazards, causing burning of the skin and mucous membranes.
  • the primary ingredients in the composition used to make the aqueous coolant of the present invention include about 5 to about 20% sebacic acid, about 2 to about 15% glycerine, about 9 to about 27% isononanoic acid and about 1 to about 3% 6-[ (l-oxoisononyl)amino]hexanoic acid, based upon the total weight of the composition.
  • Additional primary ingredients include an amount of KOH to provide the composition with a pH of about 10 to about 10.5, and water.
  • Isononanoic acid and 6-[ (l-oxoisononyl)amino]- hexanoic acid have the following formulas I and II, respectively:
  • Isononanoic acid is commercially available from Exxon Chemicals, for example. 6-[ (l-oxoisononyl)amino]- hexanoic acid is commercially available from Hoechst- Celanese, for example. 6-[ (l-oxoisononyl)amino]hexanoic acid may be prepared by reacting -caprolactam with isononanoic acid chloride according to the procedure in U.S. Patent 4,348,302.
  • a suitable mixture of isononanoic acid and 6-[ (l-oxoisononyl)amino]hexanoic acid is commercially available from Hoechst-Celanese under the trademark HOSTACOR* TP-2291. Because the isononanoic acid and 6-[ (l-oxoisononyl)amino]hexanoic acid are premixed in the HOSTACOR ® TP-2291 product, the use of this product is the preferred manner of incorporating these two primary ingredients in the composition of the present invention.
  • the sebacic acid and glycerine used in the composition of the present invention may generally be obtained from various commercial suppliers.
  • the KOH used in the present invention is preferably an aqueous solution of KOH, for example, 45% aqueous KOH.
  • the KOH used in the present invention preferably contains no chlorine-containing impurities.
  • This chlorine-free KOH is generally referred to as "electronic grade" KOH.
  • the water used in the composition of the present invention may be chlorine-free tap water, distilled water or deionized water or mixtures thereof.
  • the amount of water used in the composition is an amount so that the sum of the ingredients of the composition is 100%.
  • the composition comprises about 7 to about 15% sebacic acid, about 2 to about 6% glycerine, about 13.5 to about 18% isononanoic acid and about 1.5 to about 2% 6-[ (l-oxoisononyl)amino]- hexanoic acid, based upon the total weight of the composition.
  • composition of the present invention is about 9.67% sebacic acid, about 3.9% glycerine, about 17.41% isononanoic acid, about 1.93% 6-[(l-oxoisononyl)amino]hexanoic acid, about 25.56% of 45% aqueous KOH and about 37.39% water, based upon the total weight of the composition.
  • composition may further comprise optional ingredients.
  • optional ingredients include ingredients designed to improve characteristics of the composition and/or coolant, such as corr ⁇ siv-ity, stability and fragrance.
  • the optional ingredients of the composition of the present invention include a non-ferrous corrosion inhibitor, present in an amount of about 0.01 to about 0.5%, based on the total weight of the composition.
  • a non-ferrous corrosion inhibitor to be used in accordance with the present invention is benzotriazole.
  • a suitable, commercially available form of benzotriazole to be used as a non-ferrous corrosion inhibitor in the present invention is COBRATEC ® , marketed by PMC Specialties Group, Inc.
  • Other non-ferrous corrosion inhibitors suitable to be used in the composition of the present invention would be readily apparent to one skilled in the art.
  • dimer ester Another optional ingredient which may be used in the composition of the present invention is a dimer ester.
  • the dimer ester is present in the composition in an amount of about 0 to about 5%, based upon the total weight of the composition.
  • a suitable, commercially available dimer ester is EMERY ® 2902 or EMERY ® 2908 water-active lubricant basestocks, marketed by Emery Chemicals.
  • biocide present in an amount of about 0 to about 4%, based on the total weight of the composition.
  • suitable biocides to be used in the present invention include 5-hydroxymethoxymethyl-l-aza-3 ,7-dioxabicyclo- (3.3.0)octane, 5-hydroxymethyl-l-aza-3 ,7-dioxabicyclo- (3.3.0)octane and 5-hydroxypoly[methyleneoxy(74% C,, 21% C,, 4% C , 1% C 5 )]methyl-l-aza-3,7-dioxabicyclo(3.3.0)octane.
  • a suitable, commercially available biocide to be used in the present invention is BIOBAN ® N-95, marketed by ANGUS Chemical Co.
  • Other biocides to be used in the composition of the present invention would be readily apparent to one skilled in the art.
  • Still another optional ingredient to be used in the composition of the present invention is a perfume, present in an amount of up.to about 0.5% based on the total weight of the composition.
  • the perfume is intended to impart a pleasant fragrance to the composition and/or the aqueous coolant.
  • An example of a suitable perfume to be used in the present invention is an orange perfume, commercially available from Alpine Aromatics International.
  • Other perfumes to be used in the composition of the present invention would be readily apparent to one skilled in the art.
  • Another optional ingredient to be used in the composition of the present invention is a lubricant, for example, an ethoxylated and propoxylated polyalkylglycol, such as poly GWS 660, commercially available from Olin Chemical.
  • Other optional ingredients to be used in the composition of the present invention intended to impart desirable properties to the composition and/or coolant would be readily apparent to one skilled in the art.
  • the optional ingredients include about 0.1 to about 0.5% of a non-ferrous corrosion inhibitor, about 1 to about 5% of a dimer ester and about 1 to about 4% of a biocide.
  • the composition used to prepare the aqueous coolant for cooling and protecting a metal workpiece and a metalworking apparatus or device from corrosion and rust during metalworking may be prepared according to a number of procedures.
  • all of the primary ingredients namely, sebacic acid, glycerine, isononanoic acid and 6-[ (l-oxoisononyl)amino]hexanoic acid are added to the water.
  • the optional ingredients for example, a non- ferrous corrosion inhibitor, a dimer ester and a perfume, may also be added to the water at this stage of the preparation of the composition.
  • the biocide should not yet be added to the mixture.
  • the pH is adjusted with KOH until a pH of about 10 to about 10.5 is obtained.
  • the isononanoic acid and 6-[ (l-oxoisononyl)amino]hexanoic acid are present as the corresponding potassium salts.
  • the sebacic acid is generally present as the dipotassium salt.
  • This neutralization/basification process is exothermic due to the heat of neutralization.
  • the temperature of the mixture generally rises to about 130-150*F during the neutralization/basification process.
  • the mixture should be allowed to cool to below about 100*F, at which time, if desired, the biocide may be added to the mixture. After all of the desired ingredients are combined and the mixture is allowed to cool, the result is the composition.
  • the composition of the present invention is used to prepare an aqueous coolant for cooling and protecting a metal workpiece and a metalworking apparatus or device from corrosion and rust during metalworking.
  • the composition is diluted with additional water.
  • the composition is diluted with water at a ratio of about 1 part composition to about 20 parts water to about 1 part composition to about 40 parts water. It is critical that the resulting aqueous coolant has a pH of about 9.5 or less and more preferably, a pH of about 7.4 to about 8.1.
  • a process for cooling and protecting a metal workpiece and a metalworking apparatus or device from corrosion and rust during metalworking operations and/or procedures includes, for example, machining and grinding and any metal-removing or metal-forming operation.
  • metalworking apparatus or device includes, for example, a grinding wheel, a drill and a cutting wheel.
  • Suitable metals to be cooled and protected by the aqueous coolant of the present invention comprise ferrous metals, for example, cast iron and steel, and non-ferrous metals, such as aluminum. Examples of other metals to be cooled and protected by the aqueous coolant of the present invention during metalworking operations or procedures would be readily apparent to one skilled in the art.
  • a concentrate namely the aforementioned composition, comprising primary ingredients including about 5 to about 20% sebacic acid, about 2 to about 15% glycerine, about 9 to about 27% isononanoic acid and about 1 to about 3%
  • the concentrate further comprises an amount of KOH to provide the concentrate with a pH of about 10 to about 10.5, and water.
  • KOH potassium hydroxide
  • the concentrate is diluted with additional water to provide a coolant.
  • the concentrate is diluted with additional water at a ratio of about 1 part concentrate to about 20 parts water to about 1 part concentrate to about 40 parts water.
  • the resulting coolant must have a pH of about 9.5 or less.
  • the metal is worked in the presence of the coolant, thereby cooling and protecting the metal workpiece and a metalworking apparatus or device from corrosion and rust.
  • the concentrate comprises about 7 to about 15% sebacic acid, about 2 to about 6% glycerine, about 13.5 to about 18% isononanoic acid and about 1.5 to about 2%
  • the concentrate comprises about 7.5 to about 10% sebacic acid, about 3.9 to about 4% glycerine, about 17.41 to about 18% isononanoic acid and about 1.93 to about 2% 6-[(l-oxoisononyl)amino]hexanoic acid, based upon the total weight of the concentrate.
  • the concentrate comprises about 9.67% sebacic acid, about 3.9% glycerine, about 17.41% isononanoic acid, about 1.93% 6-[ (l-oxoisononyl)amino]hexanoic acid, about 25.56% of 45% aqueous KOH and about 37.39% water, based upon the total weight of the concentrate.
  • the concentrate may comprise optional ingredients to enhance the stability and other characteristics of the concentrate.
  • the concentrate in addition to the aforementioned primary ingredients, may further comprise about 0.01 to about 0.5% of a non-ferrous corrosion inhibititor, about 0 to about 5% of a dimer ester, about 0 to about 4% of a biocide and up to about 0.5% of a perfume, based upon the total weight of the concentrate.
  • These optional ingredients generally correspond to the optional ingredients contained in the composition, discussed hereinbefore. Accordingly, the discussion regarding the optional ingredients for the composition is incorporated herein by reference.
  • the concentrate comprises about 0.1 to about 0.5% of a non-ferrous corrosion inhibitor, about 1 to about 5% of a dimer ester and about 1 to about 4% of a biocide.
  • the process for cooling and protecting a metal workpiece and a metalworking apparatus or device from corrosion and rust during metalworking comprises initially beginning with the coolant. This obviates the need for initially preparing the concentrate and/or composition, followed by diluting the concentrate and/or composition with additional water.
  • the coolant comprises primary ingredients, including about 0.125 to about 1% sebacic acid, about 0.05 to about 0.75% glycerine, about 0.225 to about 1.35% isononanoic acid and about 0.025 to about 0.15% 6- [(l-oxoisononyl)a ino]hexanoic acid, based on the total weight of the coolant.
  • the coolant further comprises primary ingredients of an amount of KOH to provide the coolant with a pH of about 9.5 or less, and water.
  • the process further comprises working the metal in the presence of the coolant, thereby cooling and protecting the metal workpiece and the metalworking apparatus or device from corrosion and rust.
  • These primary ingredients correspond to the primary ingredients for the composition and the concentrate, discussed hereinbefore. Accordingly, the discussion regarding the primary ingredients for the composition and the concentrate are incorporated herein by reference.
  • the coolant comprises about 0.175 to about 0.75% sebacic acid, about 0.05 to about 0.3% glycerine, about 0.338 to about 0.9% isononanoic acid and about 0.038 to about 0.1% 6-[(l- oxoisononyl)amino]hexanoic acid, based on the total weight of the coolant.
  • the coolant comprises about 0.188 to about 0.5% sebacic acid, about 0.098 to about 0.2% glycerine, about 0.435 to about 0.9% isononanoic acid and about 0.048 to about 0.1% 6- [(l-oxoisononyl)amino]hexanoic acid, based on the total weight of the coolant.
  • the coolant comprises about 0.242 to about 0.484% sebacic acid, about 0.098 to about 0.195% glycerine, about 0.435 to about 0.871% isononanoic acid ajnd about 0.048 to about 0.097% 6-[ (l-oxoisononyl)amino]- hexanoic acid.
  • the coolant in the process of the present alternate embodiment may comprise optional ingredients. These optional ingredients correspond to the optional ingredients described with reference to the composition and the concentrate.
  • a preferred range of these optional ingredients in the coolant is about 2.5 x 10 -4 to about 0.25% of a non-ferrous corrosion inhibitor, about 0 to about 0.25% of a dimer ester, about 0 to about 0.2% of a biocide and up to about 0.025% of a perfume. More preferably, the coolant comprises about 2.5 x
  • compositions and/or aqueous coolants of the present invention are evaluated using a "Modified Herbert Rust Test.”
  • This test is designed as a relative determination of the corrosion thre ⁇ hhold concentration of metalworking fluids on cast iron.
  • the test comprises grinding the surface of a test block which comprises a 1-3/4-inch type "S" cast iron pipe plug to a near mirror finish. The test block is then cleaned with isopropyl alcohol.
  • the desired aqueous coolant is formulated and placed in a 4-oz. jar.
  • Cast iron chips (1 gram) obtained from machining and grinding operations are added to the jars and the aqueous coolant and the cast iron chip/coolant mixture i ⁇ ⁇ ha en and allowed to soak for 5 minutes.
  • the resulting mixture i ⁇ poured over the cast iron test block, retaining the chips on the surface of the blocks. Excess liquid from the block is then drained and the block is placed into a humidity cabinet containing 1/2 inch distilled water. After allowing the block to stand for 18 hours in the humidity cabinet, the chips are ⁇ craped from the surface of the block and the percentage of blush rust and degree of contact rust is recorded.
  • Example 1 A ⁇ erie ⁇ of aqueou ⁇ coolants were prepared as indicated in Table 1. Table 1 al ⁇ o ⁇ et ⁇ forth the la ⁇ t dilution at which the block did not rust, unles ⁇ otherwi ⁇ e indicated. The higher the dilution, the more effective the coolant in preventing ru ⁇ t.
  • Sebacic Acid 10 15 5 5 15 20 2.5 5 7.5
  • OAHA indicates 6-[(l-oxoi ⁇ ononyl)aalnojhexanolc acid; P Indicates pass; and F indicates fail
  • OAHA 6-[(l-oxoisononyl)amino)hexanoic acid; P Indicates pass; and F indicates fall
  • aqueous coolants 12, 22 and 23 are the most effective coolants for cooling and protecting a metal workpiece from corrosion and rust during metalworking.
  • Aqueous coolants 12, 22 and 23 are effective at a greater dilution (1:40, or a 2.5% v/v concentration) than the other aqueous coolants set forth in Table 1.
  • compositions are not commercially acceptable in view of cost consideration ⁇ .
  • some of the prior art type of commercially available coolant ⁇ lose their effectivenes ⁇ over time, due to a breakdown or leaching out or other decrease in effectiveness of the ingredients.
  • the coolant ⁇ of the pre ⁇ ent invention not only are capable of effective cooling and corro ⁇ ion protection at high dilution ratio ⁇ of 1:30 and greater, but also, they are stable and effective for a long period of time.
  • the coolants of the pre ⁇ ent invention do not appear to break down, leach out or have their effectivene ⁇ dimini ⁇ hed compared to the prior art commercial coolant ⁇ .

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

Composition aqueuse et agent de refroidissement aqueux dilué contenant de l'acide sébacique, de la glycérine, de l'acide isocyanique et un acide 6-[(1-oxoisononyl)amino] hexanoïque. L'agent de refroidissement est utilisé pour refroidir et protéger une pièce de métal et un appareil ou un dispositif à travailler les métaux contre la corrosion et la rouille, durant le travail d'un métal. L'agent de refroidissement ne contient par d'amines, de nitrites, de phosphates, de soufre, de chlore ou de bore libres.
PCT/US1991/004429 1990-07-03 1991-06-21 Agent de refroidissement aqueux Ceased WO1992001029A1 (fr)

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US54788590A 1990-07-03 1990-07-03
US547,885 1995-10-25

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EP0556087A1 (fr) * 1992-02-14 1993-08-18 Elf Atochem S.A. Composition inhibitrice de la corrosion à base d'acide carboxylique et son application pour inhiber la corrosion
EP0573287A1 (fr) * 1992-06-03 1993-12-08 Texaco Development Corporation Inhibiteurs de la corrosion pour fluides de transfert de chaleur
WO1994017221A1 (fr) * 1993-01-22 1994-08-04 Buckman Laboratories International, Inc. Agents chimiques et procede d'inhibition de la corrosion et de la formation de depots dans des systemes d'eau
EP1010740A1 (fr) * 1998-12-16 2000-06-21 Setuza a.s. Liquide de refroidissement concentré et dilué
WO2006092376A1 (fr) 2005-02-28 2006-09-08 Basf Aktiengesellschaft Concentres d'agents antigel et anticorrosion contenant de la glycerine
WO2009026916A3 (fr) * 2007-08-30 2009-06-18 Univ Braunschweig Tech Réfrigérant lubrifiant
WO2018035477A1 (fr) 2016-08-19 2018-02-22 Arena Pharmaceuticals, Inc. Agonistes des récepteurs 5-ht2c, compositions et méthodes d'utilisation
CN112812755A (zh) * 2020-12-23 2021-05-18 杭州富通电线电缆有限公司 一种铜杆制造方法
LU101645B1 (en) * 2020-02-17 2021-08-17 Metall Chemie Tech Gmbh Amino Acids as Green Neutralizing Agent for Acidic Corrosion Inhibitors

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EP0556087A1 (fr) * 1992-02-14 1993-08-18 Elf Atochem S.A. Composition inhibitrice de la corrosion à base d'acide carboxylique et son application pour inhiber la corrosion
US5507861A (en) * 1992-02-14 1996-04-16 Elf Atochem S.A. And Haber Partners Sarl Carboxylic acid-based corrosion-inhibiting composition and application thereof in corrosion prevention
EP0573287A1 (fr) * 1992-06-03 1993-12-08 Texaco Development Corporation Inhibiteurs de la corrosion pour fluides de transfert de chaleur
WO1994017221A1 (fr) * 1993-01-22 1994-08-04 Buckman Laboratories International, Inc. Agents chimiques et procede d'inhibition de la corrosion et de la formation de depots dans des systemes d'eau
EP1010740A1 (fr) * 1998-12-16 2000-06-21 Setuza a.s. Liquide de refroidissement concentré et dilué
KR101437690B1 (ko) * 2005-02-28 2014-09-03 바스프 에스이 부식 방지 특성을 갖는 글리세롤 함유 동결방지 농축물
US7927505B2 (en) 2005-02-28 2011-04-19 Basf Aktiengesellschaft Glycerin-containing antifreezing agent concentrates with corrosion protection
US8454854B2 (en) 2005-02-28 2013-06-04 Basf Se Glycerin-containing antifreezing agent concentrates with corrosion protection
WO2006092376A1 (fr) 2005-02-28 2006-09-08 Basf Aktiengesellschaft Concentres d'agents antigel et anticorrosion contenant de la glycerine
WO2009026916A3 (fr) * 2007-08-30 2009-06-18 Univ Braunschweig Tech Réfrigérant lubrifiant
WO2018035477A1 (fr) 2016-08-19 2018-02-22 Arena Pharmaceuticals, Inc. Agonistes des récepteurs 5-ht2c, compositions et méthodes d'utilisation
LU101645B1 (en) * 2020-02-17 2021-08-17 Metall Chemie Tech Gmbh Amino Acids as Green Neutralizing Agent for Acidic Corrosion Inhibitors
WO2021165311A1 (fr) * 2020-02-17 2021-08-26 Metall Chemie Technologies Gmbh Acides aminés en tant qu'agent neutralisant vert pour inhibiteurs de corrosion acide
CN112812755A (zh) * 2020-12-23 2021-05-18 杭州富通电线电缆有限公司 一种铜杆制造方法

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