EP2363451A1 - Additif thixotrope anticorrosion pour liquides de conservation et graisse de lubrification - Google Patents

Additif thixotrope anticorrosion pour liquides de conservation et graisse de lubrification Download PDF

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Publication number
EP2363451A1
EP2363451A1 EP10154383A EP10154383A EP2363451A1 EP 2363451 A1 EP2363451 A1 EP 2363451A1 EP 10154383 A EP10154383 A EP 10154383A EP 10154383 A EP10154383 A EP 10154383A EP 2363451 A1 EP2363451 A1 EP 2363451A1
Authority
EP
European Patent Office
Prior art keywords
corrosion protection
fatty acid
coconut fatty
dialkylbenzene
thixotropic
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.)
Withdrawn
Application number
EP10154383A
Other languages
German (de)
English (en)
Inventor
Markus Kuilder
Steffen Sandhöfner
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.)
Rhein Chemie Rheinau GmbH
Original Assignee
Rhein Chemie Rheinau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rhein Chemie Rheinau GmbH filed Critical Rhein Chemie Rheinau GmbH
Priority to EP10154383A priority Critical patent/EP2363451A1/fr
Priority to PL11154654T priority patent/PL2363452T3/pl
Priority to ES11154654.5T priority patent/ES2535808T3/es
Priority to EP11154654.5A priority patent/EP2363452B1/fr
Priority to US13/030,523 priority patent/US8828915B2/en
Publication of EP2363451A1 publication Critical patent/EP2363451A1/fr
Withdrawn legal-status Critical Current

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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
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/08—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic sulfur-, selenium- or tellurium-containing compound
    • 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
    • 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
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/043—Ammonium or amine salts thereof
    • 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
    • C10N2030/02—Pour-point; Viscosity index
    • 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

Definitions

  • the invention relates to novel thixotropic anticorrosive additives, to carrier substances containing these anticorrosive additives, to processes for their preparation and to their use for preserving liquids and lubricating greases.
  • Anti-corrosive additives are used in lubricants and form a protective film by chemical reaction and / or attachment of polar compounds to the metal surface.
  • the thixotropic properties promote easier application and adhesion and thus the corrosion protection properties on the metal surface.
  • Sulfonates in particular dialkylbenzene sulfonate, and / or carboxylates or else ashless corrosion protection additives, such as succinic acid monoesters, ammine-neutralized succinic acid derivatives or else amino-neutralized phosphoric acid partial esters are known as corrosion protection additives.
  • film formers such as e.g. oxidized petrolatum or lanolin fatty acid used. It is known that the effectiveness of the corrosion protection increases with the thickness of the film-forming layer, whereby film formers, such as e.g. oxidized petrolatum and lanolin fatty acid are preferred. These often have the disadvantage that the resulting corrosion protection additives have a reduced washability and a lower solubility in the end product.
  • the thixotropic corrosion protection additives of coconut fatty acid according to the invention as film formers in combination with dialkylbenzene sulfonic acid, the disadvantages of the prior art in the washability and especially in solubility with the carrier substances do not have, but have good corrosion inhibiting properties.
  • the present invention therefore relates to novel thixotropic corrosion protection additives which are a mixture of at least one dialkylbenzene sulphonate with coconut fatty acid.
  • Alkyl in the context of the invention means C 8 -C 24 -alkyl, preferably C 10 -C 14 -alkyl, where the two alkyl radicals within the molecule may be the same or different. Furthermore, the use of mixtures of different dialkylbenzene sulfonates is preferred.
  • the two alkyl radicals can occupy any position within the molecule to the sulfonate group, ie in the ortho, meta and / or para position.
  • mixtures are used.
  • the dialkylbenzene sulphonates can be prepared by sulphonation of the corresponding dialkylbenzene and subsequent neutralization with suitable bases, such as calcium hydroxide, according to methods known to the person skilled in the art. However, these are also commercially available products which are available, for example, from Rhein Chemie Rheinau GmbH under the trade name Additin® RC 4220.
  • coconut fatty acid is a commercially available product that is available, for example, from the Nordische ⁇ lwerke. Since it is a natural product, the composition can vary depending on the country of origin and manufacturer, but this has no effect on the intended in the course of the invention film-forming properties. Accordingly, all types of coconut fatty acid can be used.
  • the coconut fatty acid is preferably an almost exclusively saturated coconut oil rich in lauric and myristic acid.
  • the quantitative ratio of dialkylbenzene sulfonate to coconut fatty acid is arbitrary.
  • ratios of dialkylbenzene sulfonate to coconut fatty acid of from 5 to 1 to 1 to 5 are preferred.
  • proportions of 3 to 2 to 2 to 3 are used set.
  • the thixotropic corrosion protection additives may contain further additives, such as demulsifiers, stabilizers, antioxidants, defoamers, wear protection and / or high-pressure additives, but also other known anticorrosion additives, e.g. Sulfonates, carboxylates, naphthenates, etc.
  • the present invention further provides a process for the preparation of thixotropic corrosion protection additives, according to which either dialkylbenzene sulfonic acid is reacted with at least one base and then coconut fatty acid is added or, alternatively, dialkylbenzene sulfonic acid is neutralized with a base in the presence of coconut fatty acid.
  • Bases according to the invention are alkali and / or alkaline earth hydroxides, preferably barium or calcium hydroxide.
  • the base is preferably added in excess, but it is also possible to use the base in stoichiometric proportions.
  • the reaction / neutralization is preferably carried out at temperatures of 60 to 99 ° C in the presence of small amounts of water.
  • the stirring of the coconut fatty acid should be at temperatures above the melting point of the coconut fatty acid, i. preferably above 40 ° C, most preferably at temperatures around 60 ° C.
  • a filtration step after the completion of the reaction and before the bottling of the product in order to separate off any excess base present.
  • dialkylbenzene sulfonic acid with at least one base in the presence of a partial amount of the intended coconut fatty acid and to add the remaining portion of the coconut fatty acid after neutralization.
  • Another object of the invention are vehicles containing at least one inventive thixotropic corrosion protection additive.
  • Carrier substances within the meaning of the invention are preferably oils, solvents or fats.
  • oils are long-chain, as well as branched oils of any viscosity can be used, such.
  • solvent includes, for example, hydrocarbon-containing solvents, such as pentane or all types of gasoline, such as white spirits, and polar solvents, such as ethyl acetate. These are commercially available compounds. Examples are, for example, boiling mineral spirits 45/60 or 80/110 or Isopar® compounds, available from the company Exxon Mobil Oil. Thus, for example, in fire-prone areas, compounds with boiling points well above 50 ° C. are preferred, for example boiling-point petrol 80/110 or Isopar®H preferred.
  • oils can be used any reaction products of the aforementioned oils with thickeners.
  • thickeners which may be mentioned are lithium, sodium, calcium soaps or polymer thickeners.
  • the mixing ratio of oil to thickener is freely selectable and depends on the application.
  • the introduction of the thixotropic corrosion protection additive into the carrier substances preferably takes place at temperatures above 40.degree.
  • the invention also provides the use of the thixotropic corrosion protection additives according to the invention in preservative liquids or greases.
  • the preservative liquids are used in particular for the temporary protection of metallic workpieces, eg on the transport route before production, for storage, etc.
  • blends A and B had comparable film strength and washability.
  • the film thickness was determined as the average film thickness from the gravimetric determination of the untreated sheet compared to the coated sheet after a 2-hour drying time after immersion in a 10% solution of the above samples in the isoparaffinic oil Isopar® H Exxon Mobil Oil.
  • the washability was determined after a 1-minute storage in 18 liters of a test cleaner solution consisting of tap water with a total hardness of 10 to 20 ° d.H, as well as 80g test cleaner TP 10339 * per liter cleaning solution. For all samples of blends A and B, the film was completely removed.
  • the steel sheets were precleaned with boiling-point petrol (60/80) and then wiped with a petrol soaked cloth until the cloth showed no more dark discoloration. Now the plates marked with numbers were hung on a hook and dipped 3 times 30s in the sample to be tested. Subsequently, the sheets were stored 2h hanging in the closet. Thereafter, the sheets were transferred to the test fixture and the heated Salzsprühhunt. The assessment was made at the given times. Only the front of the tin was judged. The onset of rust often occurs at the edge of the sheet metal.
  • FIG. 1 Shown here are the service lives, in which there are no more than 3 smaller rust spots with an area of ⁇ 1 mm 2 .
  • the thixotrobe corrosion protection additive of dialkylbenzene sulfonate and coconut fatty acid according to the invention achieved the best results in the Salzsprühhunt-life and shows a clear jump in performance over other film formers!
  • This additive also shows good results in the washability test, such as anti-corrosive additives without film-forming agents and is also readily soluble in all tested base oils, such as paraffin-based mineral oils of various viscosities, gasoline, naphthenic base oils and even short-chain isoparaffins.

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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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Lubricants (AREA)
EP10154383A 2010-02-23 2010-02-23 Additif thixotrope anticorrosion pour liquides de conservation et graisse de lubrification Withdrawn EP2363451A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP10154383A EP2363451A1 (fr) 2010-02-23 2010-02-23 Additif thixotrope anticorrosion pour liquides de conservation et graisse de lubrification
PL11154654T PL2363452T3 (pl) 2010-02-23 2011-02-16 Tiksotropowe dodatki do ochrony przed korozją dla cieczy konserwujących i smarów
ES11154654.5T ES2535808T3 (es) 2010-02-23 2011-02-16 Aditivos anticorrosivos tixotrópicos para líquidos conservantes y grasas lubricantes
EP11154654.5A EP2363452B1 (fr) 2010-02-23 2011-02-16 Additif thixotrope anticorrosion pour liquides de conservation et graisse de lubrification
US13/030,523 US8828915B2 (en) 2010-02-23 2011-02-18 Thixotropic corrosion protection additives for preservative liquids and lubricating greases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10154383A EP2363451A1 (fr) 2010-02-23 2010-02-23 Additif thixotrope anticorrosion pour liquides de conservation et graisse de lubrification

Publications (1)

Publication Number Publication Date
EP2363451A1 true EP2363451A1 (fr) 2011-09-07

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP10154383A Withdrawn EP2363451A1 (fr) 2010-02-23 2010-02-23 Additif thixotrope anticorrosion pour liquides de conservation et graisse de lubrification
EP11154654.5A Active EP2363452B1 (fr) 2010-02-23 2011-02-16 Additif thixotrope anticorrosion pour liquides de conservation et graisse de lubrification

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11154654.5A Active EP2363452B1 (fr) 2010-02-23 2011-02-16 Additif thixotrope anticorrosion pour liquides de conservation et graisse de lubrification

Country Status (4)

Country Link
US (1) US8828915B2 (fr)
EP (2) EP2363451A1 (fr)
ES (1) ES2535808T3 (fr)
PL (1) PL2363452T3 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981682A (en) 1973-03-15 1976-09-21 Westvaco Corporation Corrosion inhibiting compositions and process for inhibiting corrosion of metals
US5108641A (en) * 1989-10-10 1992-04-28 Colgate-Palmolive Co. Aqueous liquid automatic dishwasher detergent composition containing dual bleach system
US20050079982A1 (en) * 2003-03-04 2005-04-14 Bence Patrick Joseph Thixotropic compounds and methods of manufacture
US6919302B2 (en) * 2000-05-19 2005-07-19 Usinor Use of an oil composition for temporary treatment of metal surfaces

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1043052C (zh) * 1994-05-24 1999-04-21 出光兴产株式会社 切割或研磨油组合物
DE102004054495A1 (de) * 2004-11-11 2006-05-24 Degussa Ag Natriumpercarbonatpartikel mit einer Thiosulfat enthaltenden Hüllschicht

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981682A (en) 1973-03-15 1976-09-21 Westvaco Corporation Corrosion inhibiting compositions and process for inhibiting corrosion of metals
US5108641A (en) * 1989-10-10 1992-04-28 Colgate-Palmolive Co. Aqueous liquid automatic dishwasher detergent composition containing dual bleach system
US6919302B2 (en) * 2000-05-19 2005-07-19 Usinor Use of an oil composition for temporary treatment of metal surfaces
US20050079982A1 (en) * 2003-03-04 2005-04-14 Bence Patrick Joseph Thixotropic compounds and methods of manufacture

Also Published As

Publication number Publication date
EP2363452A1 (fr) 2011-09-07
ES2535808T3 (es) 2015-05-18
US8828915B2 (en) 2014-09-09
PL2363452T3 (pl) 2015-08-31
EP2363452B1 (fr) 2015-04-08
US20110294710A1 (en) 2011-12-01

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