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WO1999020696A1 - Procede pour recouvrir des metaux et metal muni d'un revetement selon ledit procede - Google Patents

Procede pour recouvrir des metaux et metal muni d'un revetement selon ledit procede Download PDF

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Publication number
WO1999020696A1
WO1999020696A1 PCT/EP1998/006410 EP9806410W WO9920696A1 WO 1999020696 A1 WO1999020696 A1 WO 1999020696A1 EP 9806410 W EP9806410 W EP 9806410W WO 9920696 A1 WO9920696 A1 WO 9920696A1
Authority
WO
WIPO (PCT)
Prior art keywords
source
organic film
ions
dispersion
film former
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.)
Ceased
Application number
PCT/EP1998/006410
Other languages
German (de)
English (en)
Inventor
Christine Schröder
Hans Dolhaine
Andreas Kunz
Wolfgang Lorenz
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Priority to AU11520/99A priority Critical patent/AU1152099A/en
Publication of WO1999020696A1 publication Critical patent/WO1999020696A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
    • C23C22/74—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process for obtaining burned-in conversion coatings
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
    • C23C2222/20—Use of solutions containing silanes

Definitions

  • the invention relates to a method for coating surfaces made of steel, tinned steel, galvanized or alloy-galvanized steel or aluminum to improve the corrosion protection and to increase the adhesion of a lacquer coating applied thereon.
  • the process is preferably carried out as a so-called “no-rinse process” and is therefore particularly suitable for use in continuously running strip treatment plants.
  • the invention relates to surface-coated metal parts, in particular metal strips made from the materials mentioned, and piece goods, which are obtainable by using them coated with the inventive method.
  • the method according to the invention combines features of a primer coating and a conversion method.
  • a primer process the metal surface is coated with a thin layer of an inorganic or organic film former, which does not chemically attack the metal surface itself and which forms a hafite base for subsequent painting.
  • the metal surface is treated with treatment solutions that react chemically with the metal surface. This forms a coating into which components of the metal surface are incorporated and which thereby adheres particularly well to the metal surface.
  • This conversion layer also improves the adhesion of a subsequently applied organic coating and additionally represents a corrosion protection layer. Both methods are widely used in the technology for pretreating metals before painting.
  • the most common conversion processes are chromating, layer-forming or non-layer-forming phosphating as well as the reaction with fluorozirconates and fluorotitanates.
  • Primers or other organic coatings often contain anti-corrosion pigments. These can increase the corrosion protection effect caused by the barrier effect of the organic coating via different mechanisms: On the one hand, the mostly inorganic pigments can form additional diffusion barriers and thereby hinder the contact of atmospheric components with the metal surface. On the other hand, the corrosion protection pigments can also be “active”, for example by binding aggressive atmospheric components by chemical reaction or by releasing components such as chromate or phosphate ions, which react with active areas of the metal surface and thereby passivate them.
  • Common corrosion protection pigments are chromates, Phosphates, phosphides and phosphites, borates and borosilicates, molybdates, cyanamides, metal oxides, metal powders or metal flakes as well as pigments with ion exchange properties. See Ullmanns Encyclopedia of Industry Chemistry, 5th edition, volume A20, pages 335 to 347 for further details become.
  • Pigments of this type are usually used in such a way that they are mixed with an organic film former which acts as a binder and are applied to the metal surfaces.
  • the individual pigment particles have a minimum size which is dependent on the production process of the pigment powder and, moreover, show the tendency to agglomerate when incorporated into the organic matrix or to disaggregate them only incompletely.
  • the pigment particles are usually in a well crystallized form. Because of the crystalline state and the production-related minimum particle size as well as any drying steps during production, the pigment particles have assumed a largely thermodynamically stable state and are therefore not very reactive. The effectiveness as active anti-corrosion pigments is limited.
  • the invention has for its object to provide a method for coating metals, in which an organic film former is applied to the metal surface, which contains particles of anti-corrosion pigments with increased reactivity. This object is achieved by a method for coating surfaces
  • Dispersion of a source of phosphate ions and an organic film former is applied to the metal surfaces together or with a total dry layer of 0.2 to 3 g / m 2 , preferably 0.5 to 2 g / m 2 , and dried.
  • the coating method according to the invention differs from previous methods in that the particles of the corrosion protection pigments in the martix of the organic film former are formed shortly before, during or after the application of the solution or dispersion of the organic film former to the metal surface from predetermined starting components. This is done by the reaction of the ions of divalent to tetravalent metals with the phosphate ions in the matrix of the organic film former, that is to say in the matrix of an organic polymer.
  • the influence of the matrix can be seen, for example, in the fact that, even with grazing incidence of the X-ray beam, no crystalline reaction products of the ions of the di- to tetravalent metals with the phosphate ions can be detected using X-ray methods. Accordingly, these reaction products are not crystalline in structure and / or are present in the form of so small individual particles that there is no pronounced X-ray interference. An increased chemical reactivity of the particles can be concluded from this.
  • Suitable substrate materials are the common metals that are currently used for packaging in vehicle construction, in architecture and in the household appliance sector. These are steel, for example the quality ST1405 used in vehicle construction, tinned steel, one-sided or both-sided galvanized or hot-dip galvanized steel or aluminum.
  • the zinc layer of the galvanized steel can be alloyed with other metals, so that alloy-galvanized steel is produced. Examples of such alloy components are iron, nickel and aluminum.
  • Aluminum as substrate material is also not available as pure aluminum in the field of application mentioned, but usually contains fractions of percent to a few percent alloy alloys. components such as magnesium, silicon and copper in particular. Therefore, when we speak of "aluminum", we mean such aluminum alloys.
  • Suitable organic film formers are those polymers which are usually used for coating metal surfaces. These can be, for example, polymer systems based on epoxides, polyurethanes or polyamides. In the context of the present invention, however, preference is given to using polymers which carry groups which are suitable for salt formation with the di- to tetravalent cations. Polymers bearing carboxylate groups are particularly suitable. Examples include homopolymers or heteropolymers of acrylic acid, metacrylic acid and maleic acid.
  • the organic film formers are used as a solution or as a dispersion in a solvent such as water, an organic solvent or in a mixture of water and an organic solvent.
  • solutions or dispersions in water or in a high-water solvent mixture are preferred.
  • examples include the aqueous solutions or dispersions of homo- or copolymers of acrylic acid, methacrylic acid and their esters, which are commercially available with polymer contents of about 40 to about 70% by weight.
  • TG glass transition temperature
  • the treatment solutions or dispersions can be applied to the metal surfaces using conventional methods. In the case of small-area parts, this can be done, for example, by rigging, brushing or spin coating. With continuously running belt systems, it is possible to spray the treatment solutions or dispersions onto the surface in such a way that the desired liquid film layer and the resulting dry layer layer result after drying. A higher level of process reliability is achieved if, after the treatment solution or dispersion has been sprayed on, the liquid foam layer is specifically adjusted, for example by blowing off with compressed air or preferably by squeezing rollers. Preferably, however, the coating solution or dispersion is applied to the surface by application rollers, the desired liquid-foam layer being able to be set directly. Such application rollers are on the technical area concerned, for example under the name "chemcoater" or
  • Roll-coater is known.
  • the treatment solution or dispersion can be poured onto the metal parts or the metal parts can be immersed in the treatment solution or dispersion.
  • the temperature of the treatment solution or dispersion and of the metal surface to be coated is in the range from approximately 10 to approximately 80 ° C., preferably in the range from approximately 15 to 35 ° C.
  • the applied solutions or dispersions are dried at an elevated temperature. This can be done, for example, by exposure to infrared radiation. Or you can drive the belt through a suitably heated drying oven, where drying can be supported by a warm air flow.
  • the drying process is preferably controlled such that the metal surface assumes a temperature (“peak metal temperature”) in the range from 50 to 180 ° C., preferably from 150 to 170 ° C.
  • the source of ions of di- to tetravalent metals is preferably selected from oxides, hydroxides, basic oxides and alcoholates of the di- to tetravalent metals and from salts of the di- to tetravalent metals with acids volatile at a temperature below 180 ° C at atmospheric pressure . Accordingly, one preferably avoids such sources of ions of di- to tetravalent metals which, in addition to the metal ions, contain those components which remain in the layer after drying and which can have a disadvantageous effect on the corrosion protection.
  • the source of the ions of di- to tetravalent metals is preferably chosen so that it can be attacked by acids. Annealed oxides, for example, are not very suitable.
  • the source of ions of divalent to tetravalent metals is preferably selected from compounds of magnesium, calcium, aluminum, tin, titanium and zircon.
  • a source of ions of di- to tetravalent metals and an organic film former it has proven to be advantageous to bring the solution or dispersion of a source of ions of di- to tetravalent metals and an organic film former to a pH in the range from about 11 to about 13.5, preferably in the range from 12 to 13, or in a range from 1 to 6.
  • the compounds used as the source of the metal ions are those which can form or split off hydroxide ions in water, this pH range is generally established depending on the type of organic film former used. For example, this is the case when using calcium oxide or calcium hydroxide.
  • the solution or dispersion of a source of ions of di- to tetravalent metals and an organic film former contains about 0.5 to about 5% by weight of the source of ions of di- to tetravalent metals.
  • the proportion by weight in% should be the higher, the higher the molar mass of the source of the ions of divalent to tetravalent metals.
  • an amount in the range of about 1 to about 2% by weight is preferred when using calcium hydroxide.
  • the solution or dispersion of a source of ions of divalent to tetravalent metals and an organic film former contains a total of 3 to 15% by weight of the organic film former.
  • the organic film former can of course consist of different types of polymer.
  • the source of ions of di- to tetravalent metals is dissolved or dispersed in water and then diluted with water to the desired content of the organic film former. The additives are then added, if desired.
  • the source of phosphate ions is preferably selected from phosphoric acid and its esters.
  • the solution or dispersion of a source of phosphate ions and an organic film former contains about 0.5 to about 2% by weight of the source of phosphate ions.
  • phosphoric acid is selected as the source of phosphate ions, its concentration is preferably set in a range between approximately 0.5 and approximately 1.7% by weight.
  • phosphoric acid esters such as, for example, epoxy phosphate esters are selected as the source of phosphate ions, their concentration is preferably set in the range from approximately 0.8 to approximately 2.0% by weight.
  • phosphoric acid as the source of the phosphate ions is preferred because it reacts quickly with the ions of divalent to tetravalent metals.
  • the phosphoric acid esters must first form hydrolysis ions of phosphoric acid, which can react with the ions of the di- to tetravalent metals. In the short period of time until the coating dries, fewer reaction products of the di- to tetravalent metals with ions of phosphoric acid are formed, so that their positive effect on corrosion protection is less pronounced.
  • the solution or dispersion of a source of phosphate ions and an organic film former preferably also contains about 3 to 15% by weight of the organic film former.
  • a mixture of different organic film formers can also be used here.
  • This solution or dispersion of a source of phosphate ions and an organic film former is preferably prepared in such a way that a commercially available solution or dispersion of an organic film former is diluted to the desired concentration and the source of the phosphate ions is dissolved or dispersed therein. If desired, additives are then added.
  • the solution or dispersion of a source of phosphate ions and an organic film former preferably has a pH in the range from about 1 to 6. pH values in the lower range of this interval are preferably set if phosphoric acid is used as the source of phosphate ions. In this case, the solution or dispersion preferably has a pH in the range from about 1 to about 2, which as a rule sets itself. In contrast, when using phosphoric acid esters, the pH is between 3 and about 6.
  • the corrosion protection and paint adhesion effect which can be achieved with the method according to the invention can be further improved if silanes are added to one or both of the solutions or dispersions to be used according to the invention. Their effect is probably due to the fact that they hydrolyze to form compounds which act as adhesion promoters. Accordingly, it is preferred that the solution or dispersion of a source of ions of di- to tetravalent metals and an organic film former and / or the solution or dispersion of a source of phosphate ions and an organic film former additionally add about 2 to about 10% by weight of a total or contains several silanes. there silanes which carry 2 to 4 groups which can be split off hydrolytically are particularly suitable.
  • Examples include tetraethoxysilane, aminopropyltriethoxysilane and 3-glycidoxypropyltrimethoxysilane. These silanes already provide a significant improvement in corrosion protection in a concentration range between 1 and 2% by weight. Suspensions of finely divided, for example pyrogenic, silicas are also suitable as additives, which are used in an amount which gives 0.1 to 1% by weight of silicic acid, based on the total mass of treatment solution or dispersion.
  • the two treatment solutions can be mixed together before being applied to the metal surface.
  • the preferred procedure is to apply one treatment solution first and then, with or without intermediate drying, the other treatment solution.
  • the order in which the treatment solutions are applied may depend on the type of substrate and should be tested experimentally.
  • the solution or suspension which contains the source of ions of divalent to tetravalent metal ions is preferably applied in the first treatment stage.
  • the process according to the invention can be carried out, for example, by applying the solution or dispersion of a source of ions of di- to tetravalent metals and an organic film former to the metal surface in a first treatment step, and the solution or dispersion of a source of phosphate ions in a second treatment step and an organic film former is applied to the metal surface and the coating dries at an object temperature (“peak metal temperature”) of 50 to 180 ° C.
  • the layer coating after drying can be, for example, in the range of 0.1 to 3 ⁇ m per layer.
  • the coating is preferably dried after the first treatment step at an object temperature (“peak metal temperature”, PMT) of 50 to 180 ° C.
  • object temperature peak metal temperature
  • PMT peak metal temperature
  • the metal surfaces to be coated must be cleaned before the coating according to the invention.
  • strong or weakly alkaline cleaners which are also acidic for aluminum, are suitable in the prior art.
  • cleaning can be dispensed with.
  • the metal parts can be painted immediately, for example by electrolytic dip coating, by rolling paint ("coil coating") or by other customary coating methods such as, for example, by powder coating.
  • the treated metal parts in particular if they are metal strips
  • the coating according to the invention can also be shipped and cut by the user, reshaped and assembled with similar or different metal parts.
  • the metal parts coated according to the invention can be joined together in body construction with other metal parts to form a body. After assembly, they then go through the usual processes in automotive engineering Pretreatment stages of cleaning and phosphating, whereby the metal parts coated according to the invention are not attacked by the treatment solutions and can then be overpainted become T.
  • Electrolytic paintability and weldability can be improved by adding electrically conductive pigments to the treatment solutions.
  • the invention relates to metal parts made of steel, tinned steel, galvanized or alloy-galvanized steel or of aluminum with a surface coating which can be obtained by, in any order, a solution or dispersion of a source of ions of di- to tetravalent metals and applying an organic film former and a solution or dispersion of a source of phosphate ions and an organic film former together or in succession to the metal surfaces with a dry layer coating of a total of 0.2 to 3 g / m 2 , preferably 0.5 to 2 g / m 2 and dries up.
  • a surface coating which can be obtained by, in any order, a solution or dispersion of a source of ions of di- to tetravalent metals and applying an organic film former and a solution or dispersion of a source of phosphate ions and an organic film former together or in succession to the metal surfaces with a dry layer coating of a total of 0.2 to 3 g / m 2 , preferably
  • the invention further comprises metal parts which have one or more additional lacquer layers above the surface coating which can be achieved with the method according to the invention.
  • CRS cold-rolled steel
  • EG steel galvanized on both sides
  • aqueous emulsion which had a polymer content of 47% by weight and a pH in the range from 5 to 7 was used as the organic film former.
  • the polymer portion consisted of copolymers of lower alcohol esters (essentially C to about C 6 ) with acrylic acid and methacrylic acid and had a glass transition temperature (TG) in the range of about 20 to about 25 ° C.
  • TG glass transition temperature
  • the amount used is given in the tables.
  • calcium hydroxide was dispersed in the polyacrylate dispersion for the first treatment stage and then mixed with the stated amount of water and any additives.
  • the polyacylate dispersion was first diluted with water. Then phosphoric acid and then optionally additives were added.
  • the sample sheets were treated in several process steps.
  • a salt spray test in accordance with DIN 50021 -SS was carried out on the coated test panels using a 5% strength by weight saline solution. In the case of unpainted sample sheets, the test was stopped after the appearance of white or red rust according to visual assessment.
  • the tables contain the test duration in hours (h). Painted metal sheets were scratched into a cross and left in the salt spray test for 504 hours. Then the infiltration width at the Ritz (half the width of the Ritz) (in mm) was measured. The results, evaluated according to DIN 53167, are contained in the tables.
  • paint adhesion tests were carried out on painted test sheets as a T-Bend test according to ECCA-T20 (ISO 3270-1984) and ball impact test according to DIN 55669 (ISO 6272) and evaluated according to DIN 53230. Grading: 0: no flaking of paint, 5: complete loss of liability. A cross-cut test was carried out and evaluated in accordance with DIN 53151. Grading: as above.
  • SD layered coating after pretreatment according to the invention
  • SD layered coating after pretreatment according to the invention glycidoxypropyltrimethoxysilane

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

L'invention concerne un procédé permettant de recouvrir des surfaces en acier, en acier émaillé, en acier étamé ou en acier étamé par alliage ou en aluminium. Une solution ou une dispersion d'une source d'ions de métaux bi- ou tétravalents et d'un agent filmogène organique et une solution ou une dispersion d'une source d'ions phosphate et d'un agent filmogène sont appliquées et séchées sur la surface du métal, dans n'importe quel ordre, conjointement ou successivement, avec une masse volumique de la couche sèche atteignant au total 0,2 à 3 g/m<2>. L'invention concerne par ailleurs des pièces métalliques ainsi recouvertes.
PCT/EP1998/006410 1997-10-16 1998-10-09 Procede pour recouvrir des metaux et metal muni d'un revetement selon ledit procede Ceased WO1999020696A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU11520/99A AU1152099A (en) 1997-10-16 1998-10-09 Method for coating metals and metal coated using said method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19745801A DE19745801A1 (de) 1997-10-16 1997-10-16 Verfahren zum Beschichten von Metallen und hiermit beschichtetes Metall
DE19745801.7 1997-10-16

Publications (1)

Publication Number Publication Date
WO1999020696A1 true WO1999020696A1 (fr) 1999-04-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/006410 Ceased WO1999020696A1 (fr) 1997-10-16 1998-10-09 Procede pour recouvrir des metaux et metal muni d'un revetement selon ledit procede

Country Status (4)

Country Link
AU (1) AU1152099A (fr)
DE (1) DE19745801A1 (fr)
WO (1) WO1999020696A1 (fr)
ZA (1) ZA989430B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4270768B2 (ja) * 2000-11-08 2009-06-03 Ｊｆｅスチール株式会社 錫めっき鋼板及び化成処理液
IT1316032B1 (it) * 2000-12-19 2003-03-26 Ct Sviluppo Materiali Spa Procedimento per la passivazione di banda di acciaio stagnata con film di passivazione senza cromo.
WO2004009714A1 (fr) * 2002-07-24 2004-01-29 University Of Cincinnati Film de silate et chromate reduit
DE10305450A1 (de) * 2003-02-11 2004-08-26 Walter Hillebrand Gmbh & Co. Aktivatoren der Schwarzpassivierung
DE102010030115A1 (de) 2009-08-11 2011-02-17 Evonik Degussa Gmbh Glycidyloxyalkylalkoxysilan-basierte wässrige Silansysteme für den Blankkorrosionsschutz und Korrosionsschutz von Metallen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243417A (en) * 1975-11-17 1981-01-06 Rohm And Haas Company Corrosion-inhibiting latex paints
EP0389653A1 (fr) * 1989-03-29 1990-10-03 Tayca Corporation Composition de pigments anti-corrosion et composition de revêtement anti-corrosion contenant ces pigments
WO1997022423A1 (fr) * 1995-12-18 1997-06-26 Nippon Steel Corporation Tole metallique a revetement organique antirouille, son procede de production et liquide de traitement necessite par ce procede

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243417A (en) * 1975-11-17 1981-01-06 Rohm And Haas Company Corrosion-inhibiting latex paints
EP0389653A1 (fr) * 1989-03-29 1990-10-03 Tayca Corporation Composition de pigments anti-corrosion et composition de revêtement anti-corrosion contenant ces pigments
WO1997022423A1 (fr) * 1995-12-18 1997-06-26 Nippon Steel Corporation Tole metallique a revetement organique antirouille, son procede de production et liquide de traitement necessite par ce procede
EP0870549A1 (fr) * 1995-12-18 1998-10-14 Nippon Steel Corporation Tole metallique a revetement organique antirouille, son procede de production et liquide de traitement necessite par ce procede

Also Published As

Publication number Publication date
DE19745801A1 (de) 1999-04-22
ZA989430B (en) 1999-04-20
AU1152099A (en) 1999-05-10

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