EP0192132A2 - Agent anticorrosif aqueux contenant un sel d'ammonium d'acide 2-benzthiazolylthiocarboxylique - Google Patents

Agent anticorrosif aqueux contenant un sel d'ammonium d'acide 2-benzthiazolylthiocarboxylique Download PDF

Info

Publication number
EP0192132A2
EP0192132A2 EP86101564A EP86101564A EP0192132A2 EP 0192132 A2 EP0192132 A2 EP 0192132A2 EP 86101564 A EP86101564 A EP 86101564A EP 86101564 A EP86101564 A EP 86101564A EP 0192132 A2 EP0192132 A2 EP 0192132A2
Authority
EP
European Patent Office
Prior art keywords
acid
aqueous
zolylthiocarboxylic
benzothia
agent containing
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Withdrawn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
EP86101564A
Other languages
German (de)
English (en)
Other versions
EP0192132A3 (fr
Inventor
Francesco Dr. Cargnino
Giuseppe Dr. Natoli
Horst Lorke
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.)
Hoechst AG
Hoechst Italia SpA
Original Assignee
Hoechst AG
Hoechst Italia SpA
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 Hoechst AG, Hoechst Italia SpA filed Critical Hoechst AG
Publication of EP0192132A2 publication Critical patent/EP0192132A2/fr
Publication of EP0192132A3 publication Critical patent/EP0192132A3/fr
Withdrawn legal-status Critical Current

Links

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
    • C23F11/16—Sulfur-containing compounds
    • C23F11/165—Heterocyclic compounds containing sulfur as hetero atom
    • 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
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/32—Heterocyclic sulfur, selenium or tellurium compounds
    • C10M135/36—Heterocyclic sulfur, selenium or tellurium compounds the ring containing sulfur and carbon with nitrogen or 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
    • 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
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/102—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon only in the ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • C10M2219/106—Thiadiazoles
    • 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
    • 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

  • cooling lubricants in the form of aqueous mineral oil emulsions are often used.
  • Purely aqueous cooling lubricants that do not contain oils are increasingly being used for this purpose.
  • These are essentially combinations of salts of organic acids with water-soluble polyadducts, which are obtained by adding ethylene oxide, propylene oxide and / or butylene oxide to compounds having active hydrogen atoms.
  • aqueous mineral oil emulsions When using the aqueous mineral oil emulsions as cooling liquids, it is disadvantageous that these emulsions break easily, which is particularly due to thermal influences, to a change in pH or to a change in the electrolyte charge. Consequently, changing these parameters will adversely affect the quality of the emulsions, so that after a certain time the emulsion is no longer usable.
  • Another disadvantage of mineral oil emulsions is that their milky appearance makes it difficult to observe the machining process.
  • DE-AS 11 49 843 describes additives for fuels and lubricating oils that contain salts of primary, aliphatic amines of some amido acids as rust preventives. From DE-AS 29 22 562 amine salts of dicarboxylic acids are known as rust inhibitors in aqueous systems, the lubricants containing 0.3% to 50% of these rust inhibitors. The use of 2-mercaptobenztriazole as a corrosion protection agent for copper is also known. In addition, the use of benzothiazolylmercapto-dicarboxylic acids as corrosion inhibitors is already known (EP 0 129 506).
  • the object of the present invention is to find new compounds which have an anti-corrosion effect, which have no harmful effects on the operating personnel or on the environment and which can be used not only with ferrous metals but also with copper and aluminum.
  • the invention thus relates to aqueous anticorrosive agents which contain an ammonium salt of 2-benzothiazolylthiocarboxylic acid of the formula contain, where n is a number from 1 to 6 and M is an organic ammonium ion.
  • 2-benzothiazolylthiocarboxylic acids are prepared by reacting 2-mercaptobenzothiazole with M -halocarboxylic acids.
  • M -halocarboxylic acids instead of the free mercaptobenzthiazole and the free halocarboxylic acid, it is also possible to use their alkali metal salts.
  • the molar ratio of the two starting compounds is approximately 1: 1.
  • the reaction is generally carried out at a temperature of 30 to 80 ° C. and for a period of 1 to 4 hours. After the reaction has ended, the mixture is acidified and the free acid obtained is separated off, purified and dried. To prepare the ammonium salts mentioned above, this free acid is then dissolved in an aqueous solution of the desired amine in accordance with the meaning of the symbol M. This solution can then be used directly, but is preferably further diluted with water.
  • Suitable organic ammonium ions under the meaning of M are all ammonium ions which are derived from organic amines, in particular those organic ammonium ions which, together with the anion of benzothiazolylthiocarboxylic acid, form salts which are soluble or emulsifiable in water. Particularly noteworthy are the ammonium ions, which are derived from mono-, di- and tri-methylamine, mono-, di- and tri ethylamine, monoisopropylamine, mono- and di-butylamine, 3-methoxypropylamine, trimethylpentamine, mono-, di- and tri-ethanolamine, mono-, di- and tri-isopropanolamine. For economic reasons and because of the better action, salts with the mono-, di- and tri-ethanolamine are preferred.
  • aqueous solutions of the salts of 2-benzothiazolylthiocarboxylic acids obtained are clear and also do not change when left to stand for 24 hours. No foam forms and the solutions have excellent corrosion protection for ferrous metals, copper and aluminum.
  • solutions of higher concentration with an active substance content of approximately 20 to 50% are first prepared. These commercial forms are then further diluted when used and the finished working solution contains about 0.3 to 5% by weight of active substance.
  • aqueous solutions of the ammonium salts of 2-benzothiazolylthiocarboxylic acids are generally suitable as anti-corrosion agents for ferrous metals, copper and aluminum, in particular for cooling circuits, hydraulic liquids and preferably for aqueous cooling lubricants in metal processing.
  • all of these functional fluids also contain the usual active substances necessary for the respective purpose.
  • the respective composition of these functional fluids is sufficiently known to the person skilled in the art and does not require any further explanation here.
  • the reaction is continued for a further 2 hours in the temperature range between 40 and 50 ° C.
  • the water / methanol ratio is 1: 1.
  • the solution is then acidified with hydrochloric acid or acetic acid until a pH between 1 and 3 is reached.
  • reaction is continued for two hours at a temperature of 60-70 ° C, then acidified with hydrochloric acid until no more precipitations occur.
  • 2-Benzthiazolylthiopropionic acid is obtained as a white powder which, after cleaning and drying, has a melting point of 145-147 ° C.
  • the corrosion test on copper and aluminum was carried out as follows. In four test tubes with 100 cc. 1.5 g of mixtures A, B, C and D are added to water and copper foils or aluminum foils according to DIN 1791 - E-CU 57 F30 with the dimensions 2 x 12 x 75 mm are immersed in these solutions. The test tubes are closed and Leave at 20 ° C for 20 days. At the end of the experiment, the color taken up by the solution is observed:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
EP86101564A 1985-02-19 1986-02-06 Agent anticorrosif aqueux contenant un sel d'ammonium d'acide 2-benzthiazolylthiocarboxylique Withdrawn EP0192132A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1956285 1985-02-19
IT19562/85A IT1185511B (it) 1985-02-19 1985-02-19 Agenti anticorrosivi acquosi contenenti un sale ammonico dell'acido 2-benzotiazoliltiocarbossilico

Publications (2)

Publication Number Publication Date
EP0192132A2 true EP0192132A2 (fr) 1986-08-27
EP0192132A3 EP0192132A3 (fr) 1988-06-08

Family

ID=11159084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86101564A Withdrawn EP0192132A3 (fr) 1985-02-19 1986-02-06 Agent anticorrosif aqueux contenant un sel d'ammonium d'acide 2-benzthiazolylthiocarboxylique

Country Status (4)

Country Link
US (1) US4741847A (fr)
EP (1) EP0192132A3 (fr)
JP (1) JPS61190083A (fr)
IT (1) IT1185511B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2765595A1 (fr) * 1997-07-01 1999-01-08 Lorraine Laminage Composition pour protection temporaire contre la corrosion de pieces metalliques, ses procedes de preparation et d'application et pieces metalliques obtenues a partir de cette composition

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4917809A (en) * 1986-11-11 1990-04-17 Ciba-Geigy Corporation High-temperature lubricants
US5194167A (en) * 1991-05-08 1993-03-16 Mobil Oil Corporation Quaternary ammonium salts of mercaptothiadiazoles and related heterocyclic derivatives as antioxidant and antiwear additives
CN104060276B (zh) * 2014-06-26 2016-08-17 衢州市万能达清洗有限公司 一种金属表面硅烷涂层缓蚀剂
EP3440165A1 (fr) * 2016-04-07 2019-02-13 The Lubrizol Corporation Dérivés mercaptoazole utilisés en tant qu'additifs de graissage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1028924A (en) * 1962-03-13 1966-05-11 Castrol Ltd Lubricating compositions containing heterocyclic thio-ethers of saturated carboxylic acids
EP0126030A2 (fr) * 1983-05-14 1984-11-21 Ciba-Geigy Ag Procédé de préparation d'acides bêta-(benzothiazolylthio)- et bêta-(benzimidazolylthio)-carboxyliques
EP0129506A2 (fr) * 1983-05-14 1984-12-27 Ciba-Geigy Ag Acides thio-(cyclo)-alcane polycarboxyliques substitués par des hétérocycles
EP0161222A2 (fr) * 1984-05-11 1985-11-13 Ciba-Geigy Ag Amides, imides et nitriles d'acides mercaptocarboxyliques hétérocycliques en tant qu'inhibiteurs de corrosion
US4568753A (en) * 1983-11-18 1986-02-04 Sanshin Kagaku Kogyo Co., Ltd. Rust-preventive agent

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425426A (en) * 1947-08-12 Po-yhalogeno aliphatic nitriles
NL258098A (fr) *
US2154097A (en) * 1936-11-27 1939-04-11 Standard Oil Co Lubricating oil
US3080314A (en) * 1959-11-13 1963-03-05 Pure Oil Co Odor-free naphthas
US3215641A (en) * 1962-11-13 1965-11-02 Shell Oil Co Phenol derivative
US3166563A (en) * 1963-10-31 1965-01-19 Stauffer Chemical Co 2-lower alkyl sulfonyl-benzisothiazoline
US3536706A (en) * 1964-02-11 1970-10-27 Geigy Chem Corp Phenothiazine compounds
US3537999A (en) * 1968-12-11 1970-11-03 Chevron Res Lubricants containing benzothiadiazole
US3663559A (en) * 1969-12-03 1972-05-16 Union Carbide Corp Preparation of oxo-furo-pyridines from furylvinyl isocyanates
US4113637A (en) * 1974-09-10 1978-09-12 Institut Francais Du Petrole Alkyl-guanidino-heterocyclic compounds, their manufacture and use as additives for fuels and lubricants
US4177155A (en) * 1975-01-23 1979-12-04 Ciba-Geigy Corporation Additives for water-based functional fluids
US4367152A (en) * 1981-07-02 1983-01-04 Exxon Research And Engineering Co. Selected heteroaromatic nitrogen compounds as antioxidant/metal deactivators/electrical insulators in lubricating oils and petroleum liquid fuels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1028924A (en) * 1962-03-13 1966-05-11 Castrol Ltd Lubricating compositions containing heterocyclic thio-ethers of saturated carboxylic acids
EP0126030A2 (fr) * 1983-05-14 1984-11-21 Ciba-Geigy Ag Procédé de préparation d'acides bêta-(benzothiazolylthio)- et bêta-(benzimidazolylthio)-carboxyliques
EP0129506A2 (fr) * 1983-05-14 1984-12-27 Ciba-Geigy Ag Acides thio-(cyclo)-alcane polycarboxyliques substitués par des hétérocycles
US4568753A (en) * 1983-11-18 1986-02-04 Sanshin Kagaku Kogyo Co., Ltd. Rust-preventive agent
EP0161222A2 (fr) * 1984-05-11 1985-11-13 Ciba-Geigy Ag Amides, imides et nitriles d'acides mercaptocarboxyliques hétérocycliques en tant qu'inhibiteurs de corrosion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2765595A1 (fr) * 1997-07-01 1999-01-08 Lorraine Laminage Composition pour protection temporaire contre la corrosion de pieces metalliques, ses procedes de preparation et d'application et pieces metalliques obtenues a partir de cette composition
WO1999001590A1 (fr) * 1997-07-01 1999-01-14 Sollac Composition pour protection temporaire contre la corrosion de pieces metalliques, ses procedes de preparation et d'application et pieces metalliques obtenues a partir de cette composition
US6309697B1 (en) 1997-07-01 2001-10-30 Sollac Composition for temporarily protecting metal components from corrosion, its processes of preparation and of application, and metal components obtained from this composition

Also Published As

Publication number Publication date
IT8519562A0 (it) 1985-02-19
US4741847A (en) 1988-05-03
EP0192132A3 (fr) 1988-06-08
JPS61190083A (ja) 1986-08-23
IT1185511B (it) 1987-11-12

Similar Documents

Publication Publication Date Title
EP0074336B1 (fr) Systèmes inhibés contre la corrosion et/ou contre la formation d'incrustation
EP0222311A2 (fr) Utilisation d'acides gras alcoyloxy hydroxy substitués comme inhibiteurs de corrosion dans des huiles et des émulsions contenant de l'huile
DE1521758B1 (de) Schutz- und deaktivierungsmittel fuer kupfer und kupferlegierungen
DE4021086A1 (de) Korrosionsschutzpigmente auf der basis von tertiaeren erdalkali-aluminium-phosphaten und verfahren zu ihrer herstellung
EP0032246A2 (fr) Agent de protection des radiateurs automobiles pour liquides de refroidissement aqueux
DE2330340A1 (de) Korrosionsinhibierende zubereitung
EP0189085A2 (fr) Agents tensio-actifs cationiques à base de composés d'ammonium quaternaire et leur utilisation dans les compositions pour nettoyage
EP0099598A1 (fr) Solution de traitement de protection contre la corrosion de surfaces métalliques et concentré pour la préparer
EP2828419B1 (fr) Formulation aqueuse, agent de surface, anti-corrosive ainsi qu' une émulsion concentrée oléagineuse miscible avec l'eau
EP0192132A2 (fr) Agent anticorrosif aqueux contenant un sel d'ammonium d'acide 2-benzthiazolylthiocarboxylique
DE2840112A1 (de) Wassermischbare korrosionsschutzmittel
DE2502953C2 (de) N-Methylammonium-tris (methylenphosphonsäure) und Verfahren zu ihrer Herstellung
DE2036628C2 (de) Gefrierschutzmittel
DE2524543A1 (de) Bakterizid wirkender zusatz fuer oel-in-wasser-emulsionen
EP0846690A1 (fr) Amides d'acides polycarboxyliques de mélamine et leur utilisation comme inhibiteur de corrosion
DE102004010505A1 (de) Verfahren zur lösungsmittelfreien Herstellung von Ethercarbonsäuren mit niedrigem Restsalzgehalt
EP0216280B1 (fr) Utilisation de mono-amides d'acides alcénylsucciniques comme inhibiteurs de corrosion
WO2001042532A2 (fr) Liquide pour le traitement de metaux dont le ph est compris dans la plage neutre
DE69922975T2 (de) Mechanische arbeit an einem kupfer oder aluminium enthaltenden metall
DE3808372A1 (de) Reaktionsprodukte aus borsaeure und alkanoletheraminen und deren verwendung als korrosionsschutzmittel
EP0109549B1 (fr) Agents anti-corrosion pour solutions aqueuses pour le traitement des métaux et procédé pour leur préparation
WO2008089858A1 (fr) Réfrigérant lubrifiant à grand pouvoir dispersant pour l'usinage par enlèvement de copeaux par voie humide de métaux légers
EP0025125B1 (fr) Utilisation d'acides hydroxycarboxyliques contenant du soufre comme inhibiteurs de corrosion pour systèmes aqueux
WO1999023281A1 (fr) LIQUIDE DE TRAITEMENT DE METAUX POUR LA ZONE DE pH NEUTRE
EP0109548B1 (fr) Agents anticorrosion pour solutions aqueuses pour le traitement des métaux et procédé pour leur préparation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE CH DE FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19880810

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19890609

R18W Application withdrawn (corrected)

Effective date: 19890609

RIN1 Information on inventor provided before grant (corrected)

Inventor name: CARGNINO, FRANCESCO, DR.

Inventor name: LORKE, HORST

Inventor name: NATOLI, GIUSEPPE, DR.