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
  • C23F11/14—Nitrogen-containing compounds
  • C23F11/141—Amines; Quaternary ammonium compounds
  • C23F11/143—Salts of amines
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/18—Organic compounds containing oxygen
  • C10L1/188—Carboxylic acids; metal salts thereof
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/22—Organic compounds containing nitrogen
  • C10L1/221—Organic compounds containing nitrogen compounds of uncertain formula; reaction products where mixtures of compounds are obtained
• • 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
• • 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
  • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
  • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
  • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
• • 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
  • 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
  • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
• • 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
• • 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
• • 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
  • C10M2215/225—Heterocyclic nitrogen compounds the rings containing both nitrogen and oxygen
• • 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
  • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
  • C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
• • 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
  • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
  • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
• • 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
  • C10N2030/04—Detergent property or dispersant property
• • 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
  • C10N2040/244—Metal working of specific metals
  • C10N2040/246—Iron or steel

Definitions

• the present invention relates to a composition
• a composition comprising at least a 2-alkyl carboxylic acids salts and an oil component. Further the use of 2-alkyl carboxylic acids salts as anti-corrosion additive is disclosed such as in aqueous metal working fluids.
• boric acid In the past one of the most commonly used acids for the purpose of providing anti-corrosion properties in metalworking fluid formulations was boric acid. Boric acid is an easily available and cheap compound. In recent years however, boric acid came under attack as a potential hazard to human, animal and plant health. The compound was subsequently classified as a Substance of Very High Concern (SVHC) by the EU. A need therefore exists in the marketplace to find alternatives for boric acid.
• SVHC Very High Concern
• Carboxylic acids and carboxylic acid salts are widely used in metalworking fluids, biofuels and general lubricant application for a great variety of very different purposes depending on the structure such as emollients, anticorrosion additives, raw materials for esters, coupling agents, antimicrobial agent (see EP 0742004B1 or DE 19516705 A1 ), and detergency and lubricity improvers.
• Carboxylic acid salts including long carbon chain carboxylic acid salts are compounds obtained by the neutralisation of the corresponding organic acids with, for example, amines, alkanolamines or sodium compounds.
• the organic acids may comprise linear, branched, cyclic or aromatic hydrocarbyl groups.
• US 5507861 for example teaches the use of odd-numbered, monocarboxylic acids in corrosion inhibiting compositions.
• US 4588513 describes the use of dicarboxylic acids or salts thereof as corrosion inhibitors and US 8168575 discloses neutralised fatty acid salts, both linear and branched, as anti-staining agents for non-ferrous metals, with no reference to anti-corrosion properties.
• the object of the present invention is to provide compositions for metalworking fluids, lubricants and fuels as lubricity, emulsification, detergency and anticorrosion.
• this invention relates to compositions comprising neutralised or partially neutralised 2-alkyl branched carboxylic acids comprising in total 10 or 11 carbon atoms and their uses as lubricity improver, anticorrosion additive, emollient, and/or detergency improver.
• composition according to the invention comprises
• 2-alkyl branched carboxylic acids comprise only one branching.
• the alkyl group is a methyl, ethyl, propyl or butyl group.
• 2-alkyl branched carboxylic acids salts that are mixtures of the respective salts with at least three of the following alkyl groups: methyl, ethyl, propyl or butyl branches.
• the 2-alkyl branched carboxylic acids of the present invention may be used in mixtures comprising also linear fatty acid salts. It was surprisingly found that compositions comprising 2-alkyl-branched carboxylic acid salts with 10 or 11 carbon atoms exhibit significantly enhanced anticorrosion and wetting abilities when compared to the state of the art linear carbon chain fatty acid salts.
• the compounds described for the current invention contain 2-alkyl branching, or mixtures of these branched compounds together with linear compounds, with no quaternary carbons present. This property provides specific advantages with regard to biodegradability.
• compositions of the invention provide enhanced corrosion inhibition properties even in neutral pH environments such as pH 7 to 8.
• compositions described herein can contain no or little amounts of water (concentrates) or after dilution substantial amounts of water.
• the 2-alkyl carboxylic acids (or their salts) are mixed with linear or midchain branched carboxylic acids (or their salts), such as C8- to C22- fatty acids
• the 2-alkyl branched carboxylic acids represent from 40 to 100 weight percent of the total mixture, each calculated relative to the carboxylic acid.
• the fatty acids or fatty acid mixtures are neutralised by neutralising agents such as amines, alkanolamines and caustic compounds.
• the neutralising agent is selected from the group consisting of an alkali metal or an amine, including an alkanol amine or an alkane amine, and mixtures thereof. Partially means for example that that more than 90% or more than 98% of the acid groups are neutralized.
• the compounds described by the present invention do not contain any quaternary carbons, which leads to the added advantage of good biodegradability properties above the prior art compounds such as neodecanoic acid salts.
• the compounds were surprisingly found to display excellent anticorrosion behaviour in an pH environment between 7 and 11, particularly and unexpectedly in the neutral pH range, as well as enhanced wetting properties when compared to the state of the art.
• test method DIN 51360 part 2 was used for all examples to determine the anti-corrosion behaviour of the different acid salt solutions.
• the acids evaluated were neutralised to a pH value of 8 with monoethanolamine (MEA) to form the corresponding active salts.
• Hard water (see preparation method in DIN 51360 part 2) was used to prepare dilutions of 2 weight %. Dry-turned grey cast iron flakes were put on a circular filter paper and soaked with 2 ml of the diluted sample solution. After 2 hours, the corrosion grade on the filter paper was evaluated according to the guidelines provided in the test method (DIN 51360 part 2).
• Table 2 Acid [weight %] Active Salt [pH] Corrosion Grade after 2 h ISOCARB L11 (branched + linear) 2 8 0 Neodecanoic acid (branched) 2 8 4 Marlowet 4539 (linear) 2 8 4 Marlowet 4541 (linear) 2 8 4 ISOCARB 11 (branched) 2 8 0 Undecanoic acid (linear) 2 8 2
• ISOCARB 11 (100% branched) and undecanoic acid (100% linear) were neutralised to pH values of 8, 8.5 and 9 respectively with monoethanolamine (MEA) to form the corresponding active salts.
• Hard water (see preparation method in DIN 51360 part 2) was used to prepare dilutions of 1, 1.5 and 2 weight%. Dry-turned grey cast iron flakes were put on circular filter papers and soaked with 2 ml of the diluted sample solutions. After 2 hours, the corrosion grade on the filter papers were evaluated according to the guidelines provided in the test method (DIN 51360 part 2).
• the 2-alkyl-branched ISOCARB 11 MEA salt showed enhanced corrosion inhibiting behaviour when compared to the linear undecanoic acid MEA salt at the various dilutions prepared, as well as at the three pH values evaluated.
• the acids evaluated were neutralised to various pH values (see table 4) with monoethanolamine (MEA) to form the corresponding active salts.
• Hard water (see preparation method in DIN 51360 part 2) was used to prepare dilutions of one weight%.
• the acids evaluated were neutralised to various pH values (see table 5) with monoisopropanolamine (MIPA) to form the corresponding active salts.
• Hard water (see preparation method in DIN 51360 part 2) was used to prepare dilutions of 1 weight%.
• the one weight % dilutions of fatty acid MIPA salts were prepared and the results clearly show enhanced corrosion inhibiting properties of the 2-alkyl branched ISOCARB 11 salts when compared to the two industry-accepted standards (linear CORFREE M1 and linear IRGACORL 190 Plus).
• the acids evaluated were neutralised to different pH values (see table 6) with monoisopropanolamine (MIPA) to form the corresponding active salts.
• Hard water (see preparation method in DIN 51360 part 2) was used to prepare dilutions of 2 weight%.
• Table 7 shows a metalworking fluid formulation package (emulsifiable concentrate) based on mineral oil.
• MARLON OS 85 10 Emulsifier Petroleum sulphonate Na salt 5
• Surfactant MARLOX RT 42 4 Coupling agent ISOCARB 11 4 Anticorrosion and Stabiliser Di Ethanol Amine 12

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• Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Emergency Medicine (AREA)
• Materials Engineering (AREA)
• Mechanical Engineering (AREA)
• Metallurgy (AREA)
• Preventing Corrosion Or Incrustation Of Metals (AREA)
• Lubricants (AREA)

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Citations (8)

• 2015
  • 2015-08-14 EP EP15181182.5A patent/EP3130654A1/de not_active Withdrawn
• 2016
  • 2016-08-12 WO PCT/EP2016/001385 patent/WO2017028947A1/en active Application Filing

Patent Citations (9)

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