EP0996769B1 - Composition pour la protection temporaire contre la corrosion de pieces metalliques, ses procedes de preparation et d'application et pieces metalliques obtenues a partir de cette composition - Google Patents
Composition pour la protection temporaire contre la corrosion de pieces metalliques, ses procedes de preparation et d'application et pieces metalliques obtenues a partir de cette composition Download PDFInfo
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- EP0996769B1 EP0996769B1 EP98933689A EP98933689A EP0996769B1 EP 0996769 B1 EP0996769 B1 EP 0996769B1 EP 98933689 A EP98933689 A EP 98933689A EP 98933689 A EP98933689 A EP 98933689A EP 0996769 B1 EP0996769 B1 EP 0996769B1
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- 0 CC(C(*)(*)C(C)(C)C(O)=O)SC(*1)=NC2=C1C=C[C@@](*)C=C2 Chemical compound CC(C(*)(*)C(C)(C)C(O)=O)SC(*1)=NC2=C1C=C[C@@](*)C=C2 0.000 description 1
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Classifications
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- 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
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- 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
Definitions
- the subject of the present invention is a composition useful for temporarily protect metal parts from corrosion, a process for preparation of said composition and the metal parts coated with a dry film deriving from it
- the object of the present invention is precisely to propose a new coating meeting these requirements
- a first approach consists in incorporating into the coatings a based on temporary protection oil formulations, one or more inhibitors corrosion.
- EP 129506 proposes the use of heterocyclic thioether of acids carboxylates related to those of the invention, as a corrosion inhibitor. However, these compounds are introduced directly into the oily phase of the corresponding emulsions.
- This neutralization of the compound or compounds of formula I. used according to the invention can be carried out conventionally by a person skilled in the art. She can for example be obtained from ammonia, morpholine, ethanolamine, ethanol or potash. Depending on the reagent used, it may be, if necessary necessary to adjust the pH of the final composition, to a value compatible with the recommended application, i.e. at a value between 8.2 and 9.5 and preferably between 8.5 and 9 This can be easily achieved by adjusting the pH of the final emulsion by an additional addition of neutralizer such as ethanolanine for example
- the corrosion inhibitor of general formula I is preferably present in the claimed composition in an amount of 1 to 10 g / l and preferably 1 at 3.5 g / l.
- ABTS benzothiazolylthiosuccinique
- the emulsion can be defined as comprising in dispersion in water, 3 to 13% by volume of an oily phase comprising from 75 to 90% by volume of at least one oil and from 5 to 10% by volume at least one surfactant If applicable, an additional corrosion inhibitor may be present at a rate of 5 to 15% by volume, in the oily phase.
- the emulsion comprises, in dispersion in the phase aqueous, between about 3 and 8% and preferably about 6% by volume of a oil.
- the oil contained in the oily phase of the emulsion can be consisting of mineral, vegetable or animal oil.
- it is a mineral oil and preferably a paraffinic, naphthenic type oil or a mixture thereof.
- mineral oil preferably used according to the present invention, particular mention will be made of the soluble oil AQUASAFE 21® from CASTROL.
- surfactant for the oily phase a polyoxyethylene type surfactant.
- the corrosion inhibitor used is oily phase, a carboxylic acid, a sodium or barium alkyl sulfonate or an amine and fatty acid salt.
- the composition claimed includes a water-soluble salt of the acid as a corrosion inhibitor benzothiazolylthiosuccinique (ABTS), present, at a concentration between 1 and 3.5 g / l and preferably of the order of 2.5 g / l, in the aqueous phase of a 6% emulsion in soluble oil which is preferably AQUASAFE 21® oil from CASTROL.
- ABTS benzothiazolylthiosuccinique
- it is the ammonium salt of the acid benzothiazolylthiosuccinic present at a concentration of the order of 2.5 g / l.
- the present invention also relates to a method of preparation of said composition.
- this process is characterized in that the one or more compounds of general formula I are incorporated in the form of a solution aqueous at the aqueous phase of the emulsion, prior to its emulsification with the oily phase.
- the present invention also relates to a method of temporary protection against corrosion of metal parts
- the composition according to the invention is applied to the surface of the metal part so as to saturate its absorption sites for compounds of general formula I and that after heating said composition, in order to obtain a film thereof, no compound of general formula I present in the thickness of the applied film.
- the performance of the coating film is indeed clearly improved if the application of the composition claimed on the metal plate to process is carried out so as to saturate its adsorption sites with a compound of general formula I and to prevent the accumulation of this same compound of formula general I in terms of film thickness.
- Adjusting the optimal concentration of formula inhibitor general I on the surface of the metal part to be treated can for example be appreciated and performed as follows, after applying and drying on the surface of the exhibits a composition according to the invention, of determined concentration corrosion inhibitor (s) of general formula I.
- the leaching of the acetone, dip or spray piece Then, we measure the level of saturation of the adsorption sites on the surface of the treated metal part performing an infrared spectrum of the leached room, using the technique of Fourier infrared transform spectroscopy (IRFT) under grazing incidence at 80 °
- IRFT Fourier infrared transform spectroscopy
- aqueous composition according to the invention can be clearly understood deposited in the form of a film, on the surface of the metal parts to be protected, by any suitable conventional means such as a roller coating device or similar or by spraying.
- the part thus treated then undergoes a drying in order to obtain a dry film, in accordance with the invention
- This heating can be, for example, carried out by wearing the part treated at a temperature between 50 and 100 ° C for a varying time between about 20 seconds to 10 minutes.
- the present invention also relates to a metal part coated with a dry film for temporary protection against corrosion obtained from the composition claimed and / or in accordance with the claimed processes
- the surface density of dry film on the surface of the part varies between 0.3 and 2 g / m 3 and more preferably is of the order of 0.5 g / m 2
- the term "metal parts" is used. of the hot-rolled medium thickness plates, thin-rolled sheets hot, cold rolled steel sheets as well as various kinds of plates and sheets steel, especially bare steel.
- the coatings derived from the claimed compositions have satisfactory tribological performances and therefore advantageous stamping level. This is how their characterization in terms of friction shows that they have a reduced coefficient of friction compared to conventional coatings.
- compositions according to the invention can also be applied effectively on metal plates already coated with a dry film, and are found therefore particularly advantageous for treating turns and outer edges of coil already coated with a non-greasy coating or to protect parts pickled metal.
- the mineral oil used is CASTROL soluble oil AQUASAFE 21®
- This soluble oil is diluted to 6% in demineralized water and the pH of the emulsion thus obtained is 9.2
- compositions were in Table I below Composition Typical concentration 1 (soluble oil) Typical concentration 2 (inhibitor (s)) -1- CASTROL AQUASAFE 21 emulsion (soluble oil only) 6% 0 (60 g / l) -2- (ABTS) (inhibitor only) 0 aqueous solution 30 g / l -3- composition 1 + composition 2 6% 2.5 g / l (60 g / l) -4- IrgacorL184 + Irgamet 42 0 30 g / l (L 184) and 1.5 g / l (142) -5- composition 1 + composition 4 6% 30 g / l (L 184) and 1.5 g / l (142) (60 g / l) -6- composition 1 + PX2881 6% 15 ml / l (60g / l) -7- composition 1 + PX2881 6% 5 ml / l (60g / l)
- the performance of the different compositions tested is assessed by applying them to pickled steel specimens, polished with G600 paper, in proportions such that the final grammage deposited on specimens is of the order of 500 mg / m 2 (0.5 ⁇ m) .
- the test piece is then immersed in an electrolyte composed of demineralized water, of 1% by weight of sodium chloride (NaCl).
- the steel test piece is kept 30 minutes in the electrolyte in order to stabilize its electrochemical potential. After 30 min, using a potentiostat, a frequency analyzer, a reference electrode and a counter electrode, a sinusoidal potential disturbance (in mV) is imposed on the test piece.
- different decreasing frequencies and we measure "response intensity" in ⁇ A / cm 2 )
- the thickness of the films applied is 0.5 g / m 2 on average (0.5 ⁇ m).
- the composition is always composed of Castrol AQUASAFE soluble oil. 21, diluted to 6% in demineralized water
- ABTS inhibitor neutralized with ethanolamine, is introduced at concentrations varying between 0.5 and 20 g / l in the aqueous phase, in a composition according to the invention comprising an aqueous emulsion based on 6% of CASTROL AQUASAFE 21
- the corrosion resistance of the different corresponding compositions are determined by FKW humidifier according to the protocol described in material and method The results obtained are represented on the graph of figure 1
- composition comprising 2.5 g / l of ABTS inhibitor in neutralized form
- composition according to the invention comprising a ABTS concentration equal to 2.5 g / l (COMPOSITION 3) and with regard to control compositions 1, 2 and 4, identified more precisely in the chapter Materials and methods.
- compositions undergo the EB hall and finishing hall tests whose protocols are explained in Materials and Methods.
- composition Number of days before corrosion appears (hall EB1) Number of days before corrosion appears (finishing hall) 1 15 to 25 days 66 days 2 2 to 6 days 15 days 3 30 to 65 days 110 days 4 3 days / 5 10 to 20 days /
- composition according to the invention that is to say the composition 3 comprising an ABTS salt in an aqueous emulsion
- present resistance significantly extended over time What is more, the increase in resistance observed is clearly greater than that resulting from superimposition of the resistances induced respectively by the emulsion and by the ABTS.
- compositions 1,2, 3 and 4 identified more specifically in the Materials and Methods chapter
- This test consists of stacking previously coated test pieces by the solutions to be tested.
- the batteries are kept tight to simulate the turns contiguous with a steel coil or the stacked sheets of a bundle of sheets.
- the stacked stack of test pieces (“tight packet") is then introduced into a climatic chamber programmed to alternate 32 hr cycles ("transport cycle").
- compositions Number of cycles before corrosion appears 1 ⁇ 6 cycles 2 ⁇ 6 cycles 3 > 19 cycles 4 ⁇ 6 cycles 5 ⁇ 6 cycles
- composition 3 exhibits corrosion resistance significantly improved This increase also reflects a synergy between the emulsion and the ABTS salt.
- compositions 2 and 4 based on an aqueous solution containing ABTS and an Irgacor L184 / Irgamet 42 mixture respectively, tested compositions are always composed of Castrol AQUASAFE soluble oil 21, diluted to 6% in demineralized water (composition 1) and added with different inhibitors (compositions 3 and 5 to 9)
- ABTS is present in a form neutralized with ammonia.
- the drying of emulsions 4 to 6 therefore leads to a evaporation of ammonia.
- composition 4 the completion of a step of drying (composition 4) gives an advantageous behavior to the film corresponding to a film which has not undergone drying (composition 3) This effect is in fact linked to the implementation of ammonia-neutralized ABTS
- Total resistances are determined by impedance electrochemical. performed according to the protocol described in the Hardware chapter and Previous method
- the single-pass friction tests are carried out in plane-plane friction, at variable transverse pressure from 200 to 2,000 daN with high-speed steel tools, with an area of 1 cm 2.
- the speed of movement is 2 mm / s.
- test pieces are cut from hot pickled sheets. grade BS2, in thickness of 2 mm.
- composition A The friction curves improve with compositions C and D The results obtained are better than with a protective oil, having stamping properties (composition A)
- wettability measurements are carried out of two compositions, a composition based on an AQUASAFE 21 emulsion (WITNESS) and a composition based on an additive AQUASAFE 21 emulsion by ABTS (ABTS) at a concentration of 2.5 g / l, in the form of its salt neutralized and at pH around 8.5 to 9
- WITNESS AQUASAFE 21 emulsion
- ABTS additive AQUASAFE 21 emulsion by ABTS
- the test consists in depositing a drop of each of the emulsions on a steel test piece and to follow the evolution of the contact angle of the drop (follow-up sprawl)
- compositions tested comprise an emulsion having an oily base concentration of AQUASAFE 21 of 5% Composition Concentration in ABTS ABTS dissolved in: pH of emulsions AT 0.25% oil 9.7 B 0.125% oil 10.1 VS 0.25% emulsion 9 D 0.75% emulsion 8.9 E 3.75% emulsion 10.2
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Paints Or Removers (AREA)
Description
- des composés aminés de type alcoolamines,
- des dérivés de sulfonates comme leurs sels de baryum ou de sodium ou des alkylbenzènes sulfonates et
- des acides de type linoléique...
- appliquer sur une partie au moins de ladite pièce métallique une composition selon l'invention, et
- sécher ladite pièce métallique revêtue jusqu'à obtention d'un film sec
- figure 1 Caractérisation de la concentration optimale en inhibiteur de formule générale I.
- figure 2 Caractérisation en impédance de films selon l'invention et de films témoins ,
- figure 3 Caractérisation en frottement d'un film selon l'invention et de films témoins,
- figure 4 Caractérisation du pouvoir d'adsorption d'un inhibiteur de corrosion de formule générale I, à la surface d'une pièce métallique.
- figures 5 et 6 Caractérisation du pouvoir d'adsorption de différents inhibiteurs dont l'ABTS.
- 2 ml d'ammoniaque, ou
- 0,2 ml d'éthanolamine. Ces quantités de neutralisant peuvent être ensuite augmentées (de quelques dixième de ml) afin d'obtenir un pH final (de l'émulsion) compris entre 8,2 et 9.5
- L'Irgacor L 184
Composition | Concentration 1 typique (huile soluble) | Concentration 2 typique (inhibiteur(s)) |
-1- Emulsion CASTROL AQUASAFE 21 (huile soluble seule) | 6% | 0 |
(60 g/l) | ||
-2- (ABTS) (inhibiteur seul) | 0 | solution aqueuse 30 g/l |
-3- composition 1 + composition 2 | 6% | 2,5 g/l |
(60 g/l) | ||
-4- IrgacorL184+ Irgamet 42 | 0 | 30 g/l (L 184) et 1,5 g/l (142) |
-5- composition 1 + composition 4 | 6 % | 30 g/l (L 184) et 1.5 g/l (142) |
(60 g/l) | ||
-6- composition 1 + PX2881 | 6 % | 15 ml/l |
(60g/l) | ||
-7- composition 1 + PX2881 | 6 % | 5 ml/l |
(60g/l) | ||
-8- composition 1 + RC305 | 6 % | 15 ml/l |
(60 g/l) | ||
-9- composition 1 + RC305 | 6 % | 5 ml/l |
(60 g/l) |
- Electrode de référence électrode au calomel saturé
- Contre-électrode électrode en platine
- Electrode de travail éprouvette d'acier de 7 cm2
- Potentiostat potentiostat EGG 273®
- Analyseur de fréquence Schiumberger 1255®
- Perturbation sinusoidale ± 5 mV d'amplitude
- Potentiel d'essai potentiel de corrosion
- Fréquences de 100 000 Hz à 0.2 Hz
- halle des finissages halle dont l'atmosphère est assez peu sévère (portes fermées).
- halle EB 1 halle très sévère car les éprouvettes sont exposées prés des ouvertures de cette halle et sont donc soumises à une forte humidité par temps de pluie, aux gaz d'échappement des camions et aux poussières de l'aciérie
Composition | Nombre de jours avant apparition de la corrosion (halle EB1) | Nombre de jours avant apparition de la corrosion (halle des finissages) |
1 | 15 à 25 jours | 66 jours |
2 | 2 à 6 jours | 15 jours |
3 | 30 à 65 jours | 110 jours |
4 | 3 jours | / |
5 | 10 à 20 jours | / |
- 10 h à 40°C et 95 % de RH
- 4 h à 20°C et 80 % de RH
- 10 h à -5°C et 0 % de RH
- 8 h à 30°C et 85 % de RH
- chaque cas de figure est représenté par 4 éprouvettes,
Compositions | Nombre de cycles avant apparition de la corrosion |
1 | < 6 cycles |
2 | < 6 cycles |
3 | > 19 cycles |
4 | < 6 cycles |
5 | < 6 cycles |
Compositions | Nombre de cycles avant apparition de la corrosion |
1 | 12 cycles |
2 | 1 cycles |
3 | > 22 cycles |
4 | 1 cycle |
5 | < 12 cycles |
6 | 12 cycles |
7 | 8 cycles |
8 | 12 cycles |
9 | 15 cycles |
Compositions | Résistances de transfert en kΩ.cm2 |
1 | 10 à 20 kΩ.cm2 |
3 | 60 à 120 kΩ.cm2 |
- Composition A une huile de protection utilisée sur les tôles comme protection contre la corrosion (QUAKER 8021) déposée à raison de 2 g/m2
- Composition B l'huile soluble AQUASAFE 21 à 6 % dans l'eau, déposée à raison de 500 mg/m2
- Composition C Composition B additivée de l'inhibiteur organique ABTS sous forme de sel, (pH de la solution compris entre 7,2 et 8,5) déposée à raison de 500 mg/m2
- Composition D identique à la composition C, dont le pH est stabilisé entre 8,5 et 9 par l'ajout d'éthanolamine, déposée à raison de 500 mg/m2
Composition | Concentration en ABTS | ABTS solubilisé dans: | pH des émulsions |
A | 0,25% | huile | 9,7 |
B | 0,125% | huile | 10,1 |
C | 0,25% | émulsion | 9 |
D | 0,75% | émulsion | 8,9 |
E | 3,75% | émulsion | 10,2 |
- les films A et B sont totalement éliminés par la lixiviation On peut donc en déduire que l'inhibiteur est faiblement adsorbé dans le cas de ces compositions ,
- après lixiviation des films C, D et E, il subsiste un film interfacial dont l'épaisseur augmente avec la concentration initiale en inhibiteur De même la teneur en inhibiteur dans ces films interfaciaux résiduels (huile de base - inhibiteur) augmente avec la concentration finale
Claims (18)
- Composition utile pour conférer une protection temporaire contre la corrosion à des surfaces métalliques comprenant une émulsion d'huile dans l'eau caractérisée en ce que ladite émulsion comprend dans sa phase aqueuse au moins un composé de formule générale I dans laquelle les groupements R, R1 et R2 représentent indépendamment l'un de l'autre un atome d'hydrogène, un groupement alkyle en C1 à C20, un groupement halogénoalkyle en C1 à C20 avec l'halogène pouvant être le chlore, brome, iode ou fluor, un groupement cycloalkyle en C3 à C6 une fonction carboxylique ou un groupement carboxylalkyle en C1 à C6,n est un entier variant de 1 à 3 etX représente un atome de soufre ou d'oxygène,sous la forme d'un de ses sels hydrosolubles.
- Composition selon la revendication 1, caractérisée en ce que le composé de formule générale I est de préférence choisi parmi les sels hydrosolubles des acides benzothiazolylthiosuccinique. α-(benzothiazolylthio)stéarique. α-(benzothiazolylthio)laurique, α-(benzothiazotylthio)caproique et α-(benzothiazolylthio)caprylique.
- Composition selon l'une des revendications précédentes, caractérisée en ce que le composé de formule générale I est un sel hydrosoluble de l'acide benzothiazolylthiosuccinique.
- Composition selon la revendication 3 caractérisée en ce qu'il s'agit de préférence de son sel d'éthanolamine ou d'ammonium.
- Composition selon l'une des revendications précédentes caractérisée en ce que son pH est compris entre 8,2 et 9,5.
- Composition selon l'une des revendications précédentes, caractérisée en ce que l'émulsion comprend en dispersion dans l'eau 3 à 13 % d'une phase huileuse comprenant de 75 à 90 % en volume d'au moins une huile, de 5 à 10 % en volume d'au moins un agent tensioactif et le cas échéant de 5 à 15 % en volume d'un inhibiteur de corrosion.
- Composition selon l'une des revendications précédentes, caractérisée en ce que l'émulsion comprend en dispersion dans la phase aqueuse entre environ 3 et 8 % et de préférence environ 6 % en volume d'une huile.
- Composition selon la revendication 6 ou 7, caractérisée en ce qu'il s'agit d'une huile minérale et de préférence d'une huile de type paraffinique, naphténique ou un mélange de celles-ci.
- Composition selon l'une des revendications 6 à 8, caractérisée en ce que l'inhibiteur de corrosion de la phase huileuse est un acide carboxylique, un alkyl-sulfonate de baryum ou de sodium ou un sel d'amine et d'acide gras.
- Composition selon l'une des revendications précédentes, caracterisée en ce que le composé de formule générale I est présent dans ladite composition à une concentration comprise entre 1 et 10 g/l d'émulsion
- Composition selon la revendication 10 caractérisée en ce qu'elle comprend entre 1 à 3.5 g/l de composé de formule générale I
- Composition selon l'une des revendications précédentes caractérisée en ce qu'elle comprend entre 1 et 3,5 g/l d'acide benzothiazolylthiosuccinique sous forme d'un sel hydrosoluble, dans la phase aqueuse d'une émulsion à 6 % en huile soluble
- Composition selon la revendication 12 caractérisée en ce qu'il s'agit de benzothiazolylthiosuccinate d'ammonium, présent à une concentration de l'ordre de 2,5 g/l.
- Procédé de préparation d'une composition selon l'une des revendications 1 à 13 caractérisé en ce que le ou les composés de formules générales I sont incorporés sous forme d'une solution aqueuse au niveau de la phase aqueuse de l'émulsion préalablement à son émulsification avec la phase huileuse
- Procédé de protection temporaire contre la corrosion d'une pièce métallique. caractérisé en ce qu'il comprend les étapes consistant à :appliquer sur une partie au moins de ladite pièce métallique une composition telle que définie selon les revendications 1 à 13 ou obtenue selon la revendication 14 etsécher ladite pièce métallique revêtue jusqu'à obtention d'un film sec
- Procédé selon la revendication 15 caractérisé en ce que la composition est appliquée de manière à saturer les sites d'adsorption à la surface de la pièce métallique en un composé de formule générale I et qu'à l'issue du chauffage de ladite composition, afin d'en obtenir un film sec, on ne retrouve pas le compose de formule générale I présent dans l'épaisseur du film appliqué.
- Pièce métallique revêtue d'un film sec de protection temporaire contre la corrosion obtenu selon le procédé de la revendication 15 ou 16, à partir d'une composition telle que définie selon l'une des revendications 1 à 13, ou obtenu selon la revendication 14
- Pièce métallique selon la revendication 17 avec une densité surfacique de film sec comprise entre 0,3 et 2 g/m2
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9708288A FR2765595B1 (fr) | 1997-07-01 | 1997-07-01 | 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 |
FR9708288 | 1997-07-01 | ||
PCT/FR1998/001317 WO1999001590A1 (fr) | 1997-07-01 | 1998-06-23 | 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 |
Publications (2)
Publication Number | Publication Date |
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EP0996769A1 EP0996769A1 (fr) | 2000-05-03 |
EP0996769B1 true EP0996769B1 (fr) | 2003-03-05 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98933689A Expired - Lifetime EP0996769B1 (fr) | 1997-07-01 | 1998-06-23 | Composition pour la protection temporaire contre la corrosion de pieces metalliques, ses procedes de preparation et d'application et pieces metalliques obtenues a partir de cette composition |
Country Status (10)
Country | Link |
---|---|
US (1) | US6309697B1 (fr) |
EP (1) | EP0996769B1 (fr) |
JP (1) | JP4184595B2 (fr) |
KR (1) | KR100522925B1 (fr) |
AT (1) | ATE233834T1 (fr) |
CA (1) | CA2295864C (fr) |
DE (1) | DE69811900T2 (fr) |
ES (1) | ES2193544T3 (fr) |
FR (1) | FR2765595B1 (fr) |
WO (1) | WO1999001590A1 (fr) |
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JP6391598B2 (ja) * | 2013-02-13 | 2018-09-19 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | 防食性を有する凍結防止濃縮物およびそれから製造される水性冷却剤組成物 |
AU2014330757A1 (en) * | 2013-10-01 | 2016-04-21 | Tata Steel Limited | A chromium-free water based coating for treating a Galvannealed or galvanized steel surface |
CN106609371B (zh) * | 2015-10-27 | 2019-04-16 | 中国石油化工股份有限公司 | 一种缓蚀剂及其制备方法和应用 |
KR102045640B1 (ko) * | 2017-12-22 | 2019-11-15 | 주식회사 포스코 | 방청 조성물, 금속 기재의 방청처리 방법 및 방청 코팅층을 포함하는 금속재 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US2218557A (en) * | 1939-05-12 | 1940-10-22 | Agnes J Reeves Greer | Treatment of metals |
GB1028924A (en) * | 1962-03-13 | 1966-05-11 | Castrol Ltd | Lubricating compositions containing heterocyclic thio-ethers of saturated carboxylic acids |
GB1104755A (en) * | 1964-06-10 | 1968-02-28 | Ici Ltd | De-watering of metal surfaces |
SE401693B (sv) * | 1975-09-24 | 1978-05-22 | Berol Kemi Ab | Temporert korrosionsskyddande oljeemulsion |
GB8313322D0 (en) * | 1983-05-14 | 1983-06-22 | Ciba Geigy Ag | Heterocyclic-(cyclo)aliphatic carboxylic acids |
GB8313321D0 (en) * | 1983-05-14 | 1983-06-22 | Ciba Geigy Ag | Preparation of mercaptan substituted carboxylic acids |
US5347008A (en) * | 1983-05-14 | 1994-09-13 | Ciba-Geigy Corporation | Thio(cyclo) alkanepolycarboxylic acids containing heterocyclic substituents |
DE3341633A1 (de) * | 1983-11-17 | 1985-05-30 | Sanshin Kagaku Kogyo Co., Ltd., Yanai, Yamaguchi | Rosthemmende substanz |
GB8412064D0 (en) * | 1984-05-11 | 1984-06-20 | Ciba Geigy Ag | Compositions containing heterocyclic corrosion inhibitors |
IT1185511B (it) * | 1985-02-19 | 1987-11-12 | Hoechst Italia | Agenti anticorrosivi acquosi contenenti un sale ammonico dell'acido 2-benzotiazoliltiocarbossilico |
JPS62136580A (ja) * | 1985-12-10 | 1987-06-19 | Sanshin Kagaku Kogyo Kk | アルミニウム及びアルミニウム合金の腐食抑制剤 |
DE3933137A1 (de) * | 1989-10-04 | 1991-04-18 | Henkel Kgaa | Verfahren zur herstellung stabiler, niedrig-viskoser o/w-rostschutzemulsionen |
FR2692912B1 (fr) * | 1992-06-30 | 1995-06-30 | Lorraine Laminage | Procede de protection contre la corrosion de pieces metalliques et pieces metalliques obtenues par ce procede. |
-
1997
- 1997-07-01 FR FR9708288A patent/FR2765595B1/fr not_active Expired - Fee Related
-
1998
- 1998-06-23 EP EP98933689A patent/EP0996769B1/fr not_active Expired - Lifetime
- 1998-06-23 ES ES98933689T patent/ES2193544T3/es not_active Expired - Lifetime
- 1998-06-23 JP JP2000501287A patent/JP4184595B2/ja not_active Expired - Fee Related
- 1998-06-23 AT AT98933689T patent/ATE233834T1/de active
- 1998-06-23 DE DE69811900T patent/DE69811900T2/de not_active Expired - Lifetime
- 1998-06-23 US US09/446,887 patent/US6309697B1/en not_active Expired - Lifetime
- 1998-06-23 CA CA002295864A patent/CA2295864C/fr not_active Expired - Fee Related
- 1998-06-23 WO PCT/FR1998/001317 patent/WO1999001590A1/fr active IP Right Grant
- 1998-06-23 KR KR10-1999-7012620A patent/KR100522925B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE233834T1 (de) | 2003-03-15 |
DE69811900D1 (de) | 2003-04-10 |
WO1999001590A1 (fr) | 1999-01-14 |
DE69811900T2 (de) | 2004-02-12 |
US6309697B1 (en) | 2001-10-30 |
ES2193544T3 (es) | 2003-11-01 |
JP2001509542A (ja) | 2001-07-24 |
KR100522925B1 (ko) | 2005-10-19 |
EP0996769A1 (fr) | 2000-05-03 |
CA2295864C (fr) | 2008-04-08 |
FR2765595B1 (fr) | 1999-10-01 |
CA2295864A1 (fr) | 1999-01-14 |
FR2765595A1 (fr) | 1999-01-08 |
JP4184595B2 (ja) | 2008-11-19 |
KR20010020606A (ko) | 2001-03-15 |
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