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
  • 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
  • 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
  • C10M129/16—Ethers
• • 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
  • C10M129/68—Esters
  • C10M129/76—Esters containing free hydroxy or carboxyl groups
• • 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
  • 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
  • C23F11/12—Oxygen-containing compounds
  • C23F11/128—Esters of carboxylic 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
  • 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
  • C10M2207/04—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
  • C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
  • C10M2207/046—Hydroxy ethers
• • 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
  • C10M2207/28—Esters
  • C10M2207/287—Partial esters
  • C10M2207/288—Partial esters containing free carboxyl groups
• • 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
  • C10N2010/00—Metal present as such or in compounds
  • C10N2010/02—Groups 1 or 11
• • 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
  • C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
• • 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
• • 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

• Corrosion protection agents are used in many areas of metalworking when it comes to protecting the metal parts used from rust.
• the previously used corrosion protection agents contain constituents such as petroleum sulfonates, salts of alkylsulfonamidocarboxylic acids and amine salts of a partial ester of an alkyl or alkenyl succinic acid.
• DE-A-26 40 854 discloses lubricant compositions with antirust properties based on amine salts of a partial ester of an alkyl or alkenyl succinic acid.
• Corrosion protection agents based on alkylarylsulfonic acids, alkanolamine and partial esters of an alkyl or alkenylsuccinic acid are known from EP-A-336 467.
• sulfur-containing compounds such as alkylarylsulfonic acids, petroleum sulfonates, salts of alkylsulfonamidocarboxylic acids
• sulfur-containing compounds can easily be broken down by microorganisms, such as sulfur-reducing bacteria.
• Nitrogen-containing corrosion inhibitors, especially secondary amines, can e.g. are chemically converted into health-endangering nitrosamines.
• the object of the invention is to provide anti-corrosion agents which are free of amines and which, when used, preclude the formation of substances which are hazardous to health, such as nitrosamines.
• salts in particular alkali and alkaline earth salts of alkyl or alkenylsuccinic acid semiesters, can be used as corrosion inhibitors, and a hazard from nitrosamines can thus be excluded.
• the invention relates to corrosion inhibitors, characterized by a content of amine-free salt of a half ester of an alkyl or alkenyl succinic acid, the alkyl or alkenyl substituents of which contain 8 to 30 carbon atoms, preferably 9 to 15 carbon atoms.
• the amine-free salts are obtained by esterification of alkyl or alkenyl succinic anhydride with alcohol, preferably in equimolar amounts, optionally with the addition of a catalyst, such as alcoholate solution, at temperatures up to the boiling point of the solution, preferably 20 ° C. to boiling point, particularly preferably 40-80 ° C.
• a catalyst such as alcoholate solution
• the reaction is preferably carried out with nitrogen gas.
• the solution is advantageously stirred at a temperature up to the boiling point of the solution, preferably from 60 ° C. to the boiling point of the solution.
• the half-esters obtained are mixed with dilute alkali to a pH above 7, preferably up to a pH in the range of 9.
• the half ester is derived from an alkyl or alkenyl succinic acid in which the alkenyl or alkyl substituent contains 8 to 30 carbon atoms, preferably 9 to 15 carbon atoms.
• succinic acids are octenyl, dodecenyl, hexadecenyl, isooctadecenyl or triacontenyl succinic acid.
• the substituent group can also consist of a polyolefinic group, such as a tri, tetra or pentapropenyl group.
• the alcohol used to form the half ester preferably has 1 to 15 carbon atoms and preferably contains an alkyl alcohol (alkanol) such as methanol, ethanol, propanol or butanol.
• alkyl alcohol alkanol
• the lye, which is reacted with the half ester of substituted succinic acid is preferably aqueous hydroxide solution, such as sodium hydroxide solution or potassium hydroxide solution.
• Aqueous solutions of polyvalent metal hydroxides, such as alkaline earth metal hydroxides, are also suitable.
• the aqueous solution of the amine-free salts thus obtained can be used directly as an anti-corrosion agent without further purification of the alkyl or alkenylsuccinic acid.
• These amine-free salts can be used in the case of aqueous corrosion protection agents, and are preferably used in a concentration of 0.5 to 65% by weight, particularly preferably 1-10% by weight, based on the aqueous solution.
• the pH of the aqueous anticorrosive agent is above pH 7, preferably at a pH of approximately 9.
• Such anti-corrosion agents are characterized by complete “solubility" in combination with water. When mixed with water, they form finely divided emulsions that can be clear (transparent) opal or milky.
• Mixtures of the above-mentioned amine-free salts of the half esters of alkyl or alkenylsuccinic acid with oxethylates, fatty acids and optionally ether carboxylic acids are preferably used with mineral oils, in an amount of up to 70% by weight of mineral oil, based on the total weight, and show good properties as corrosion inhibitors.
• Suitable mineral oils are mineral oils which consist of paraffins, naphthenes and partly of aromatics and usually have viscosities of 25 to 30 mm 2 / s, measured at 20 ° C.
• aqueous solutions of the amine-free salts of the half esters of alkyl or alkenylsuccinic acid, with oxethylates, fatty acids and optionally ether carboxylic acids and mineral oil are preferably used as corrosion inhibitors, where they show good results especially with regard to good hard water stability.
• test results listed below show that the amine-free salts according to the invention are effective as anti-corrosion agents.
• Table 1 shows the corrosion-inhibiting effect of an aqueous alkaline solution of the amine-free salt.
• Table 2 shows the corrosion-inhibiting effect of a mixture.
• the corrosion-inhibiting effect was determined using the Herbert test (DIN 51360/1) and the filter paper test (DIN 51360/2).

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Materials Engineering (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Metallurgy (AREA)
• Preventing Corrosion Or Incrustation Of Metals (AREA)
• Lubricants (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Anti-Oxidant Or Stabilizer Compositions (AREA)
• Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Applications Claiming Priority (2)

Publications (2)

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• 1993
  • 1993-04-13 EP EP93105957A patent/EP0566956B1/de not_active Expired - Lifetime
  • 1993-04-13 DE DE59303348T patent/DE59303348D1/de not_active Expired - Fee Related
  • 1993-04-13 AT AT93105957T patent/ATE140982T1/de not_active IP Right Cessation
  • 1993-04-13 ES ES93105957T patent/ES2092715T3/es not_active Expired - Lifetime
  • 1993-04-19 SK SK364-93A patent/SK36493A3/sk unknown
  • 1993-04-20 BR BR9301612A patent/BR9301612A/pt not_active Application Discontinuation
  • 1993-04-21 CA CA002094556A patent/CA2094556A1/en not_active Abandoned
  • 1993-04-21 CZ CZ1993691A patent/CZ287586B6/cs not_active IP Right Cessation
  • 1993-04-21 JP JP5094551A patent/JPH0617268A/ja active Pending
  • 1993-04-21 RU RU93004634A patent/RU2110613C1/ru active

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