EP2243863A1 - Continuous chemical patination/satinising treatment process for zinc-titanium alloys - Google Patents
Continuous chemical patination/satinising treatment process for zinc-titanium alloys Download PDFInfo
- Publication number
- EP2243863A1 EP2243863A1 EP10159892A EP10159892A EP2243863A1 EP 2243863 A1 EP2243863 A1 EP 2243863A1 EP 10159892 A EP10159892 A EP 10159892A EP 10159892 A EP10159892 A EP 10159892A EP 2243863 A1 EP2243863 A1 EP 2243863A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chromium
- treatment
- acid
- titanium
- zinc
- 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.)
- Granted
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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/20—Other heavy metals
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/10—Orthophosphates containing oxidants
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
- C23C22/33—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds containing also phosphates
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/40—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
- C23C22/44—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also fluorides or complex fluorides
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/53—Treatment of zinc or alloys based thereon
-
- 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
-
- 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
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
-
- 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
- C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium
Definitions
- the present invention relates to a continuous chemical patination/satinising treatment process for zinc-titanium alloys used in the construction industry, in particular for roofs, facades, guttering, interiors or architectural works.
- Zinc-titanium alloy laminates are widely used in the construction industry, especially for roofing and cladding.
- the natural appearance of these claddings can be varied by particular pre-patination surface treatments.
- the known process normally comprises the following stages:
- EP 827785 describes a process for the treatment of zinc-titanium laminates characterised by the use of a pickling bath based on nitric and sulphuric acid and a passivation stage with a polymer containing chromate.
- the process of the invention comprises the following stages in particular:
- Degreasing serves to eliminate all trace of oils, fats, cleaning paste, oxides and any other impurities from the coil surface, in order to have a perfectly clean metal surface ready for subsequent treatments.
- said degreasing is performed with liquid products in aqueous solution at an alkaline pH (10-14).
- the use concentration is between 1% and 10%, and the temperature of the working bath between 50°C and 70°C, for a treatment time of between 5 and 40 seconds, with spray pressures of between 1 and 4 bars.
- the main elements of the degreasing bath are listed in Table 2 below.
- Table 2 Element Concentration KOH or NaOH 2 - 20 g/l P 2 O 5 2 - 20 g/l Surfactants 200 - 3000 ppm Sequestering additives 1 - 10 g/l
- P 2 O 5 is present either as orthophosphates (monosodium, disodium or trisodium phosphate) or as polyphosphates (tripolyphosphate or neutral pyrophosphate), all in the form of sodium or potassium salts.
- the most commonly used surfactants are ethoxylated fatty alcohols with alcohol C9-C11 chain, C12-C13 or C12-C18, having different degrees of ethoxylation or containing different numbers of ethylene oxide moles.
- the sequestering additives are organic compounds selected from nitriloacetic acid, sodium gluconate, gluconic acid, ethylenediaminetetraacetic acid disodium, ethylenediaminetetraacetic acid trisodium, phosphonates, acrylates and polyacrylates.
- the first rinse with continuously fresh water serves to eliminate all trace of the preceding stage; the temperature is normally between 30°C and 60°C, with times ranging between 5 and 30 seconds, and spray application.
- the chemical patination/satinising treatment is performed by pickling the zinc-titanium alloy with a surface attack between 5 and 20 g/m 2 .
- the treatment is usually performed with a specific product at a pH of between 0 and 2, used at concentrations of between 10 and 15%.
- the temperature of the working bath can be between 50% and 70%, for a reaction time of between 10 and 30 seconds; the spray pressures must be between 1 and 4 bars.
- Table 3 Element Concentration H 2 SO 4 10-150 g/l Surfactants 1 - 15 g/l Process accelerant as NO 3 100 - 6000 ppm Sequestering agents 1 -100 g/l Elements deriving from pickling of the alloy Zn ⁇ 100 g/l Other metals originating from the alloy ⁇ 100 mg/l
- the process accelerator can consist of NO 3 donor compounds such as nitric acid, ammonium nitrate, nickel nitrate, sodium nitrate, zinc nitrate, iron nitrate or cobalt nitrate, or nitrogenous organic compounds such as nitroguanidine, used alone or mixed together.
- NO 3 donor compounds such as nitric acid, ammonium nitrate, nickel nitrate, sodium nitrate, zinc nitrate, iron nitrate or cobalt nitrate, or nitrogenous organic compounds such as nitroguanidine, used alone or mixed together.
- the surfactants and agents are the same as already described.
- the second rinse with continuously fresh water is performed as for the first rinse, to eliminate all trace of the preceding stage; the temperature is normally between 30°C and 60°C, with times ranging between 5 and 30 seconds, and spray application.
- Pre-passivation which prevents the formation of zinc-oxides on the surface by increasing the anti-corrosion properties of the coil, is performed by treatment with a chromium-free bath containing zirconium and/or titanium and aluminium compounds.
- the typical composition of a pre-passivation bath according to the invention is set out in Table 4 below.
- the concentration of the product ranges between 1 and 5%, the temperature between 30 and 60°C, and the treatment times between 1 and 10 seconds; the product can be applied by spraying or immersion, and the pH value is ⁇ 5.
- Table 4 Element Concentration Zr 100 - 5000 mg/l Ti 100 - 5000 mg/l Al 10 - 500 mg/l NH 3 100 - 1000 ppm
- the zirconium compounds are preferably selected from fluorozirconic acid, ammonium zirconium carbonate and potassium fluozirconate;
- the aluminium compounds are selected from aluminium oxide of various extractions (aluminas), aluminium fluoride and aluminium bifluoride;
- the titanium compounds are selected from fluotitanic acid, titanium oxalate, titanium oxide and potassium fluotitanate.
- Drying is then performed with hot air from 50 to 90°C.
- the antifinger passivating product is applied with a Chem-Coater machine in two separate application stages, with a wet film drying step between each stage.
- the inorganic component is applied at the first stage.
- the inorganic component can be one of three different types:
- the product consists of chromic acid, chromium phosphate, corrosion inhibitors such as zinc phosphate and zinc chromate, and reducing agents such as gluconic acid, citric acid, saccharose, hydroxylamine, methanol, hydrogen peroxide and starch.
- Table 5 An example of the composition of the bath is shown in Table 5 below.
- the product consists of phosphoric acid, chromium phosphate, chromium nitrate, complexing agents selected from salified phosphonates or acids, gluconic acid, citric acid, tartaric acid, EDTA, glycolic acid and/or polyacrylates, corrosion inhibitors such as colloidal silicon dioxides in suspension, possibly having different particle sizes, generally below 30 ⁇ m, and with a SiO 2 content of between 10 and 50%, and finally, organic wetting agents based on alkoxypolypropoxypolyethoxy-ethyl-benzylether or belonging to the perfluoroderivative family.
- Table 6 An example of the composition of the bath is shown in Table 6 below.
- the product consists of silanes, selected from the families of 1-propylamine,3-(triethoxysilyl)-silane and trimethoxy[3-(oxiranylmethoxy)-propyl]-silane, titanium salts deriving from fluotitanic acid, titanium oxalate, titanium oxide or potassium fluorotitanate, alkaline phosphates such as monobasic or dibasic ammonium phosphate, mono-, bi- or tribasic sodium phosphate, acid or neutral potassium pyrophosphate, alkaline nitrates such as ammonium nitrate, sodium nitrate or potassium nitrate, sequestering agents selected from nitriloacetic acid, sodium gluconate, gluconic acid, ethylenediaminetetraacetic acid disodium, ethylenediaminetetraacetic acid trisodium, phosphonates, acrylates and polyacrylates, and corrosion inhibitors based on heavy metal
- Table 7 An example of the composition of the bath is shown in Table 7 below.
- Table 7 Element Concentration SiO 2 10 - 150 g/l P 2 O 5 10-150 g/l V ⁇ 100 ppm Ti ⁇ 200 ppm
- Drying is then performed with hot air from 50 to 90°C.
- An antifinger agent is applied at the second stage, namely an aqueous solution of corrosion inhibitors such as zinc oxide and P 2 O 5 and an acrylic resin consisting of monomers based on butylacrylate, methylmethacrylate and acrylic acid, having the following characteristics:
- the antifinger passivation product can also be applied in a single stage, with a Chem-Coater machine.
- the bath is prepared with 1 part inorganic to 2 parts organic component, or 1 part inorganic to 3 parts organic component.
- the quantity of mixture applied is 2 to 6 ml/m 2 .
- the wet film is then dried at a belt temperature of 80 to 140°C.
- Drying is typically performed with hot air at a temperature of between 60 and 80°C.
- Drying is typically performed with hot air at a temperature of between 60 and 80°C.
- Drying can be performed with hot air at a temperature of between 100 and 120°C.
- Table 8 Code Pre-passivation Passivation version Passivation Component dose ratio Type of silane A 1 No 1 Biphasic A 1.2 No 1 Monophasic 2 : 1 A 1.3 No 1 Monophasic 3 : 1 A 2 No 2 Biphasic A 3.1 No 3 Biphasic ⁇ A 3.2 No 3 Biphasic ⁇ A 3.3 No 3 Biphasic ⁇ + ⁇ B 1 Yes 1 Biphasic B 1.2 Yes 1 Monophasic 2 : 1 B 1.3 Yes 1 Monophasic 3 : 1 B 2 Yes 2 Biphasic B 3.1 Yes 3 Biphasic ⁇ B 3.2 Yes 3 Biphasic ⁇ B 3.3 Yes 3 Biphasic ⁇ + ⁇
- the zinc-titanium alloy panels treated were subjected to corrosion-resistance tests in a salt spray (fog) chamber, in accordance with Standard ASTM B 117, unprotected panels and panels with protected edges being checked for the appearance of the first white oxides.
- Table 9 shows the results obtained, expressed as hours of exposure before the appearance of the first white oxidation phenomena.
- Table 9 Code Hours of exposure Code Hours of exposure A 1 72 B 1 96 A 1.2 72 B 1.2 96 A 1.3 72 B 1.3 96 A 2 60 B 2 72 A 3.1 60 B 3.1 72 A 3.2 60 B 3.2 72 A 3.3 72 B.3.3 96
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Chemically Coating (AREA)
- Catalysts (AREA)
Abstract
- degreasing with alkaline grease-removal liquid in aqueous solution;
- first rinse with continuously fresh water;
- acid treatment involving chemical patination/satinising;
- second rinse with continuously fresh water;
- pre-passivation treatment with a chromium-free bath containing zirconium and/or titanium and aluminium compounds;
- air drying;
- passivation treatment comprising a first stage of treatment with a conventional inorganic component based on chromium 3 and/or 6 or chromium-free, and a second stage of treatment with an antifinger agent consisting of an aqueous solution of an acrylic resin consisting of monomers based on butylacrylate, methylmethacrylate and acrylic acid, having the following characteristics:
pH < 6; MW ≥ 250000; TG (glass transition temperature) between 30 and 45°C; dry residue between 30 and 50%, possibly mixed with corrosion inhibitors such as zinc oxide and P2O5;
- drying of wet film.
Description
- The present invention relates to a continuous chemical patination/satinising treatment process for zinc-titanium alloys used in the construction industry, in particular for roofs, facades, guttering, interiors or architectural works.
- Zinc-titanium alloy laminates are widely used in the construction industry, especially for roofing and cladding. The natural appearance of these claddings can be varied by particular pre-patination surface treatments.
- Said processes must give coil surfaces having a chemical composition complying with Standard EN 988 - 1998 (see Table 1) an attractive appearance with a patinated effect, specific colouring, such as antique-look zinc, excellent antifinger properties, and high corrosion resistance.
Table 1 Element Standard EN 988 - 1998 Al < 0.0150% Cu 0.0800 - 1.0000% Pb < 0.0030% Cd < 0.0030% Fe < 0.0020% Sn < 0.0010% Ti 0.0600 - 0.2000% - The known process normally comprises the following stages:
- degreasing with an alkaline grease-removal liquid in aqueous solution
- first rinse with continuously fresh water
- acid treatment involving chemical patination/satinising with specific products
- second rinse with continuously fresh water
- final passivation treatment
- drying of wet film.
-
EP 827785 - An improved process has now been found which is characterised, after the second rinse with water, by a pre-passivation stage followed by drying with hot air to prevent the formation of surface zinc oxides, and the use of a polyacrylic resin as antifinger agent in the final passivation treatment.
- The process of the invention comprises the following stages in particular:
- degreasing;
- first rinse with continuously fresh water;
- acid treatment involving chemical patination/satinising;
- second rinse with continuously fresh water;
- pre-passivation treatment with a chromium-free bath containing zirconium and/or titanium and aluminium compounds;
- air drying;
- passivation treatment comprising a first stage of treatment with a conventional inorganic component based on chromium 3 and/or 6 or chromium-free, and a second stage of treatment with an antifinger agent consisting of an aqueous solution of an acrylic resin consisting of monomers based on butylacrylate, methylmethacrylate and acrylic acid, having the following characteristics:
- pH < 6;
- MW ≥ 250000;
- TG (glass transition temperature) between 30 and 45°C;
- dry residue between 30 and 50%;
- drying of wet film.
- Degreasing serves to eliminate all trace of oils, fats, cleaning paste, oxides and any other impurities from the coil surface, in order to have a perfectly clean metal surface ready for subsequent treatments.
- Normally, said degreasing is performed with liquid products in aqueous solution at an alkaline pH (10-14). The use concentration is between 1% and 10%, and the temperature of the working bath between 50°C and 70°C, for a treatment time of between 5 and 40 seconds, with spray pressures of between 1 and 4 bars. The main elements of the degreasing bath are listed in Table 2 below.
Table 2 Element Concentration KOH or NaOH 2 - 20 g/l P2O5 2 - 20 g/l Surfactants 200 - 3000 ppm Sequestering additives 1 - 10 g/l - P2O5 is present either as orthophosphates (monosodium, disodium or trisodium phosphate) or as polyphosphates (tripolyphosphate or neutral pyrophosphate), all in the form of sodium or potassium salts.
- The most commonly used surfactants are ethoxylated fatty alcohols with alcohol C9-C11 chain, C12-C13 or C12-C18, having different degrees of ethoxylation or containing different numbers of ethylene oxide moles.
- The sequestering additives are organic compounds selected from nitriloacetic acid, sodium gluconate, gluconic acid, ethylenediaminetetraacetic acid disodium, ethylenediaminetetraacetic acid trisodium, phosphonates, acrylates and polyacrylates.
- The first rinse with continuously fresh water serves to eliminate all trace of the preceding stage; the temperature is normally between 30°C and 60°C, with times ranging between 5 and 30 seconds, and spray application.
- The chemical patination/satinising treatment is performed by pickling the zinc-titanium alloy with a surface attack between 5 and 20 g/m2.
- The treatment is usually performed with a specific product at a pH of between 0 and 2, used at concentrations of between 10 and 15%. The temperature of the working bath can be between 50% and 70%, for a reaction time of between 10 and 30 seconds; the spray pressures must be between 1 and 4 bars.
- The main elements of the patination/satinising bath are listed in Table 3 below.
Table 3 Element Concentration H2SO4 10-150 g/l Surfactants 1 - 15 g/l Process accelerant as NO3 100 - 6000 ppm Sequestering agents 1 -100 g/l Elements deriving from pickling of the alloy Zn < 100 g/l Other metals originating from the alloy < 100 mg/l - The process accelerator can consist of NO3 donor compounds such as nitric acid, ammonium nitrate, nickel nitrate, sodium nitrate, zinc nitrate, iron nitrate or cobalt nitrate, or nitrogenous organic compounds such as nitroguanidine, used alone or mixed together. The surfactants and agents are the same as already described.
- The second rinse with continuously fresh water is performed as for the first rinse, to eliminate all trace of the preceding stage; the temperature is normally between 30°C and 60°C, with times ranging between 5 and 30 seconds, and spray application.
- Pre-passivation, which prevents the formation of zinc-oxides on the surface by increasing the anti-corrosion properties of the coil, is performed by treatment with a chromium-free bath containing zirconium and/or titanium and aluminium compounds.
- The typical composition of a pre-passivation bath according to the invention is set out in Table 4 below. The concentration of the product ranges between 1 and 5%, the temperature between 30 and 60°C, and the treatment times between 1 and 10 seconds; the product can be applied by spraying or immersion, and the pH value is < 5.
Table 4 Element Concentration Zr 100 - 5000 mg/l Ti 100 - 5000 mg/l Al 10 - 500 mg/l NH3 100 - 1000 ppm - The zirconium compounds are preferably selected from fluorozirconic acid, ammonium zirconium carbonate and potassium fluozirconate; the aluminium compounds are selected from aluminium oxide of various extractions (aluminas), aluminium fluoride and aluminium bifluoride; the titanium compounds are selected from fluotitanic acid, titanium oxalate, titanium oxide and potassium fluotitanate.
- Drying is then performed with hot air from 50 to 90°C.
- The antifinger passivating product is applied with a Chem-Coater machine in two separate application stages, with a wet film drying step between each stage.
- The inorganic component is applied at the first stage. Depending on the process required, the inorganic component can be one of three different types:
- The product consists of chromic acid, chromium phosphate, corrosion inhibitors such as zinc phosphate and zinc chromate, and reducing agents such as gluconic acid, citric acid, saccharose, hydroxylamine, methanol, hydrogen peroxide and starch. The application takes place continuously at a temperature of between 15°C and 40°C; the concentration used depends on the wet film applied, which ranges between 2 and 10 ml/m2; it is generally between 10 and 50%, so that the end result is a total chromium deposit of 20 to 100 mg/m2; its value is calculated from the mg of chromium, on the basis that 1 mg/m2 of Cr = 16 mg/ m2 of total coating.
- An example of the composition of the bath is shown in Table 5 below.
Table 5 Element Concentration Total chromium (= chromium 3 + chromium 6) 5 - 20% P2O5 1 - 5% Zinc 2 - 8% - The product consists of phosphoric acid, chromium phosphate, chromium nitrate, complexing agents selected from salified phosphonates or acids, gluconic acid, citric acid, tartaric acid, EDTA, glycolic acid and/or polyacrylates, corrosion inhibitors such as colloidal silicon dioxides in suspension, possibly having different particle sizes, generally below 30 µm, and with a SiO2 content of between 10 and 50%, and finally, organic wetting agents based on alkoxypolypropoxypolyethoxy-ethyl-benzylether or belonging to the perfluoroderivative family. The application takes place continuously at a temperature of between 15°C and 40°C; the concentration used depends on the wet film applied, which ranges between 2 and 10 ml/m2; it is generally between 30 and 70%, so that the end result is a total chromium deposit of 30 to 80 mg/m2; its value is calculated from the mg of chromium, on the basis that 1 mg/m2 of Cr = 32 mg/ m2 of total coating.
- An example of the composition of the bath is shown in Table 6 below.
Table 6 Element Concentration Total chromium (= chromium 3) 20 - 200 g/l P2O5 10-150 g/l NO3 3 - 50 g/l SiO2 20 -200 g/l - The product consists of silanes, selected from the families of 1-propylamine,3-(triethoxysilyl)-silane and trimethoxy[3-(oxiranylmethoxy)-propyl]-silane, titanium salts deriving from fluotitanic acid, titanium oxalate, titanium oxide or potassium fluorotitanate, alkaline phosphates such as monobasic or dibasic ammonium phosphate, mono-, bi- or tribasic sodium phosphate, acid or neutral potassium pyrophosphate, alkaline nitrates such as ammonium nitrate, sodium nitrate or potassium nitrate, sequestering agents selected from nitriloacetic acid, sodium gluconate, gluconic acid, ethylenediaminetetraacetic acid disodium, ethylenediaminetetraacetic acid trisodium, phosphonates, acrylates and polyacrylates, and corrosion inhibitors based on heavy metals such as vanadium, molybdenum, tungsten and cerium. The product should be applied at room temperature, in concentrations ranging between 80 and 100%, in such a way that the titanium deposit is between 4 and 8 mg/m2 and the SiO2 deposit between 70 and 140 mg/m2; its value is calculated from the mg of titanium, on the basis that 1 mg/m2 of Ti = 160 mg/m2 of total coating.
- An example of the composition of the bath is shown in Table 7 below.
Table 7 Element Concentration SiO2 10 - 150 g/l P2O5 10-150 g/l V ≤ 100 ppm Ti ≤ 200 ppm - Drying is then performed with hot air from 50 to 90°C.
- An antifinger agent is applied at the second stage, namely an aqueous solution of corrosion inhibitors such as zinc oxide and P2O5 and an acrylic resin consisting of monomers based on butylacrylate, methylmethacrylate and acrylic acid, having the following characteristics:
- pH < 6; MW ≥ 250000; TG (glass transition temperature) between 30 and 45°C; dry residue between 30 and 50%.
- In the case of version 1 only, the antifinger passivation product can also be applied in a single stage, with a Chem-Coater machine. Depending on the final chromium deposit desired, the bath is prepared with 1 part inorganic to 2 parts organic component, or 1 part inorganic to 3 parts organic component. The quantity of mixture applied is 2 to 6 ml/m2. There is a partial reduction of chromium from 6 to 3 during this stage.
- The wet film is then dried at a belt temperature of 80 to 140°C.
-
Element Concentration KOH 4 g/l P2O5 from neutral potassium pyrophosphate 5 g/l Surfactants with C9-C11 chain + 5 and 6 moles of OE = ethylene oxide 500 ppm Sodium gluconate 3 g/l Use concentration of product 3 - 5% Temperature 50 - 60°C Treatment time 10 sec. Spray pressure 2 bars -
Continuously fresh water - Temperature 30°C Treatment time 10 sec. Spray pressure 2 bars -
Element Concentration H2SO4 60 g/l HNO3 6 g/l Surfactants with C9-C11 chain + 5 and 6 moles of OE = ethylene oxide 1500 ppm Sodium gluconate 10 g/l Use concentration of product 10% Temperature 60 - 70°C Treatment time 10 sec. Spray pressure 2 bars -
Continuously fresh water - Temperature 30°C Treatment time 10 sec. Spray pressure 2 bars -
Element Concentration Zr (from fluorozirconic acid) 500 mg/l Ti (from fluotitanic acid) 300 mg/l Al (from alumina) 50 mg/l NH3 50 ppm Use concentration of product 2 - 3% Temperature 50°C Treatment time 2 sec. pH 4 - Drying is typically performed with hot air at a temperature of between 60 and 80°C.
-
Element Concentration Total chromium (= chromium 6 + chromium 3) 13% P2O5 3% Zinc 3% Reducing agent used starch Wet film applied 1 - 4 ml/m2 Temperature room -
Element Concentration Total chromium (= chromium 3) 40 g/l P2O5 20 g/l NO3 5 g/l SiO2 40 g/l Complexing agent used Citric acid Type of silica used Particle size 15 µm - dry 30% Type of wetting agent perfluoroderivative Wet film applied 1 - 4 ml/m2 Temperature room -
Element Concentration SiO2 (from 1-propylamine,3-(triethoxysilyl)-silane and/or trimethoxy[3-(oxiranylmethoxy)propyl]-silane 100 g/l P2O5 (from monobasic ammonium phosphate) 20 g/l V 100 ppm Ti (from fluotitanic acid) 200 ppm Complexing agent used phosphonate Nitrate used ammonium nitrate Type of inhibitor selected vanadium Temperature room - Drying is typically performed with hot air at a temperature of between 60 and 80°C.
-
Resin used Pure acrylic, new formulation, inhibited,
with dry residue = 30%, pH = 4, TG = 32°CWet film applied 3-6 ml/m2 -
Dose ratios Inorganic ingredient 1 part - Organic ingredient 2 parts Inorganic ingredient 1 part - Organic ingredient 3 parts Wet film applied 3 - 4 ml/m2 Temperature room - Drying can be performed with hot air at a temperature of between 100 and 120°C.
- The laboratory tests were performed to compare the results obtained with (i) cycles not including the pre-passivation stage (conventional cycle) and (ii) other cycles which were identical to the preceding ones except that they included the pre-passivation stage and subsequent drying.
- Two-stage application of the final passivating product and single-stage application were tested in the cycles relating to the "Chromium 3 - Chromium 6 version"; 1:2 and 1:3 dose ratios of the two components were tested in the latter case.
- Both the above-mentioned silanes, subsequently marked α and β, were tested in the cycles relating to the "chromium-free version", both separately and in combined.
- Only the acrylic resin according to the invention was used in the organic component of the final passivation stage in all the cycles.
- For convenience, the way in which the various cycles tested were marked is shown in Table 8 below.
Table 8 Code Pre-passivation Passivation version Passivation Component dose ratio Type of silane A 1 No 1 Biphasic A 1.2 No 1 Monophasic 2 : 1 A 1.3 No 1 Monophasic 3 : 1 A 2 No 2 Biphasic A 3.1 No 3 Biphasic α A 3.2 No 3 Biphasic β A 3.3 No 3 Biphasic α + β B 1 Yes 1 Biphasic B 1.2 Yes 1 Monophasic 2 : 1 B 1.3 Yes 1 Monophasic 3 : 1 B 2 Yes 2 Biphasic B 3.1 Yes 3 Biphasic α B 3.2 Yes 3 Biphasic β B 3.3 Yes 3 Biphasic α + β - After application of the cycles, the zinc-titanium alloy panels treated were subjected to corrosion-resistance tests in a salt spray (fog) chamber, in accordance with Standard ASTM B 117, unprotected panels and panels with protected edges being checked for the appearance of the first white oxides.
- Table 9 shows the results obtained, expressed as hours of exposure before the appearance of the first white oxidation phenomena.
Table 9 Code Hours of exposure Code Hours of exposure A 1 72 B 1 96 A 1.2 72 B 1.2 96 A 1.3 72 B 1.3 96 A 2 60 B 2 72 A 3.1 60 B 3.1 72 A 3.2 60 B 3.2 72 A 3.3 72 B.3.3 96
Claims (8)
- A process of continuous chemical patination/satinising treatment of zinc-titanium alloys comprising the following stages:- degreasing with alkaline grease-removal liquid in aqueous solution;- first rinse with continuously fresh water;- chemical acid patination/satinising treatment;- second rinse with continuously fresh water;- pre-passivation treatment with a chromium-free bath containing zirconium and/or titanium and aluminium compounds;- air drying;- passivation treatment comprising a first stage of treatment with a conventional inorganic component based on chromium 3 and/or 6 or chromium-free, and a second stage of treatment with an antifinger agent consisting of an aqueous solution of an acrylic resin consisting of monomers based on butylacrylate, methylmethacrylate and acrylic acid, having the following characteristics:pH < 6;MW ≥ 250000;TG (glass transition temperature) between 30 and 45°C;dry residue between 30 and 50%;possibly mixed with corrosion inhibitors such as zinc oxide and P205;- drying of wet film.
- A process as claimed in claim 1, wherein the zirconium and/or titanium and aluminium compounds in the pre-passivation bath are selected from fluorozirconic acid, ammonium zirconium carbonate and potassium fluorozirconate; aluminium oxide of various extractions (aluminas), aluminium fluoride and aluminium difluoride; fluorotitanic acid, titanium oxalate, titanium oxide and potassium fluorotitanate.
- A process as claimed in claim 1 or 2, wherein the passivation comprises treatment with a bath containing chromium 3 and chromium 6 compounds.
- A process as claimed in claim 3, wherein the bath contains chromic acid, chromium phosphate, zinc phosphate and zinc chromate and reducing agents.
- A process as claimed in claim 1 or 2, wherein the passivation comprises treatment with a bath containing chromium 3 compounds.
- A process as claimed in claim 5, wherein the bath contains phosphoric acid, chromium phosphate, chromium nitrate, complexing agents, corrosion inhibitors and organic wetting agents based on alkoxypolypropoxypolyethoxy-ethyl-benzylether or belonging to the class of perfluoroderivatives.
- A process as claimed in claim 1 or 2, wherein the passivation comprises treatment with a chromium-free bath.
- A process as claimed in claim 7, wherein the bath contains silanes, selected from the classes of 1-propylamine,3-(triethoxysilyl)-silane and trimethoxy[3-(oxiranylmethoxy)propyl]-silane, titanium salts deriving from fluorotitanic acid, titanium oxalate, titanium oxide or potassium fluorotitanate, alkaline phosphates, alkaline nitrates, sequestering agents selected from nitriloacetic acid, sodium gluconate, gluconic acid, ethylenediaminetetraacetic acid disodium, ethylenediaminetetraacetic acid trisodium, phosphonates, acrylates, polyacrylates, and corrosion inhibitors based on heavy metals selected from vanadium, molybdenum, tungsten and cerium.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI2009A000665A IT1393946B1 (en) | 2009-04-21 | 2009-04-21 | PROCESS OF TREATMENT IN CONTINUOUS PATINATURA / SATINATIMATE CHEMICA OF ZINCO-TITANIUM ALLOYS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2243863A1 true EP2243863A1 (en) | 2010-10-27 |
EP2243863B1 EP2243863B1 (en) | 2012-06-20 |
Family
ID=41258747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100159892 Not-in-force EP2243863B1 (en) | 2009-04-21 | 2010-04-14 | Continuous chemical patination/satinising treatment process for zinc-titanium alloys |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2243863B1 (en) |
IT (1) | IT1393946B1 (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102534599A (en) * | 2011-12-30 | 2012-07-04 | 大连三达奥克化学股份有限公司 | Special phosphatizing agent before cast magnesium alloy workpiece spray application and production method thereof |
CN103695892A (en) * | 2013-12-23 | 2014-04-02 | 奎克化学(中国)有限公司 | Passivation solution based on compound sealing technology for zinc-plating material and preparation method thereof |
CN107488845A (en) * | 2016-06-11 | 2017-12-19 | 上海梅山钢铁股份有限公司 | A kind of chromium-free passivation liquid and its application method for tin plate |
CN107937893A (en) * | 2017-12-24 | 2018-04-20 | 无锡市恒利弘实业有限公司 | A kind of aluminum or aluminum alloy environmentally friendly passivating solution and preparation method thereof and treatment process |
CN108149232A (en) * | 2017-12-24 | 2018-06-12 | 无锡市恒利弘实业有限公司 | A kind of aluminium or seven line aluminium alloys environmentally friendly passivating solution and preparation method thereof and treatment process |
US10125424B2 (en) | 2012-08-29 | 2018-11-13 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing molybdenum, associated methods for treating metal substrates, and related coated metal substrates |
CN109252152A (en) * | 2018-11-20 | 2019-01-22 | 重庆广仁铁塔制造有限公司 | Zinc-plated chrome-free tanning agent and preparation method thereof |
CN109321906A (en) * | 2018-12-05 | 2019-02-12 | 湖南恒佳新材料科技有限公司 | A kind of anticorrosion aluminium material and preparation method thereof |
CN109440093A (en) * | 2018-11-23 | 2019-03-08 | 佛山市海明威生态科技股份有限公司 | A kind of aluminum non-chromium passivator and preparation method thereof |
US10400337B2 (en) | 2012-08-29 | 2019-09-03 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing lithium, associated methods for treating metal substrates, and related coated metal substrates |
US10435806B2 (en) | 2015-10-12 | 2019-10-08 | Prc-Desoto International, Inc. | Methods for electrolytically depositing pretreatment compositions |
CN110607522A (en) * | 2019-10-12 | 2019-12-24 | 佛山市湾厦新材料科技有限公司 | Vitrification agent and preparation method and application thereof |
CN112301338A (en) * | 2020-07-02 | 2021-02-02 | 上海兴赛尔表面材料有限公司 | Medium-low temperature fast curing trivalent chromium passivation solution and manufacturing and using method thereof |
WO2021133863A1 (en) * | 2019-12-26 | 2021-07-01 | Prc-Desoto International, Inc. | Systems and methods for treating a metal substrate |
US11518960B2 (en) | 2016-08-24 | 2022-12-06 | Ppg Industries Ohio, Inc. | Alkaline molybdenum cation and phosphonate-containing cleaning composition |
EP4190941A4 (en) * | 2020-07-31 | 2024-01-03 | Dipsol Chem | Chemical conversion treatment liquid, chemical conversion treatment method in which same is used, and chemical conversion coating |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0827785A2 (en) | 1996-09-09 | 1998-03-11 | Rheinzink Gmbh | Process for making protecting layers on flat shaped products made of titanium zinc |
WO2003018872A1 (en) * | 2001-08-23 | 2003-03-06 | Macdermid, Incorporated | Non-chrome passivation process for zinc and zinc alloys |
EP1433877A1 (en) * | 2002-12-24 | 2004-06-30 | Nippon Paint Co., Ltd. | Pretreatment method for coating |
-
2009
- 2009-04-21 IT ITMI2009A000665A patent/IT1393946B1/en active
-
2010
- 2010-04-14 EP EP20100159892 patent/EP2243863B1/en not_active Not-in-force
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0827785A2 (en) | 1996-09-09 | 1998-03-11 | Rheinzink Gmbh | Process for making protecting layers on flat shaped products made of titanium zinc |
WO2003018872A1 (en) * | 2001-08-23 | 2003-03-06 | Macdermid, Incorporated | Non-chrome passivation process for zinc and zinc alloys |
EP1433877A1 (en) * | 2002-12-24 | 2004-06-30 | Nippon Paint Co., Ltd. | Pretreatment method for coating |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102534599A (en) * | 2011-12-30 | 2012-07-04 | 大连三达奥克化学股份有限公司 | Special phosphatizing agent before cast magnesium alloy workpiece spray application and production method thereof |
US10125424B2 (en) | 2012-08-29 | 2018-11-13 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing molybdenum, associated methods for treating metal substrates, and related coated metal substrates |
US10920324B2 (en) | 2012-08-29 | 2021-02-16 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing molybdenum, associated methods for treating metal substrates, and related coated metal substrates |
US10400337B2 (en) | 2012-08-29 | 2019-09-03 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing lithium, associated methods for treating metal substrates, and related coated metal substrates |
CN103695892A (en) * | 2013-12-23 | 2014-04-02 | 奎克化学(中国)有限公司 | Passivation solution based on compound sealing technology for zinc-plating material and preparation method thereof |
CN103695892B (en) * | 2013-12-23 | 2016-03-02 | 奎克化学(中国)有限公司 | For the passivating solution based on compound closure technology and preparation method thereof of zinc-plating material |
US10435806B2 (en) | 2015-10-12 | 2019-10-08 | Prc-Desoto International, Inc. | Methods for electrolytically depositing pretreatment compositions |
US11591707B2 (en) | 2015-10-12 | 2023-02-28 | Ppg Industries Ohio, Inc. | Methods for electrolytically depositing pretreatment compositions |
CN107488845A (en) * | 2016-06-11 | 2017-12-19 | 上海梅山钢铁股份有限公司 | A kind of chromium-free passivation liquid and its application method for tin plate |
CN107488845B (en) * | 2016-06-11 | 2019-11-19 | 上海梅山钢铁股份有限公司 | A kind of chromium-free passivation liquid and its application method for tin plate |
US11518960B2 (en) | 2016-08-24 | 2022-12-06 | Ppg Industries Ohio, Inc. | Alkaline molybdenum cation and phosphonate-containing cleaning composition |
CN108149232A (en) * | 2017-12-24 | 2018-06-12 | 无锡市恒利弘实业有限公司 | A kind of aluminium or seven line aluminium alloys environmentally friendly passivating solution and preparation method thereof and treatment process |
CN107937893A (en) * | 2017-12-24 | 2018-04-20 | 无锡市恒利弘实业有限公司 | A kind of aluminum or aluminum alloy environmentally friendly passivating solution and preparation method thereof and treatment process |
CN109252152B (en) * | 2018-11-20 | 2020-11-10 | 重庆广仁铁塔制造有限公司 | Chromium-free passivator for galvanization and preparation method thereof |
CN109252152A (en) * | 2018-11-20 | 2019-01-22 | 重庆广仁铁塔制造有限公司 | Zinc-plated chrome-free tanning agent and preparation method thereof |
CN109440093A (en) * | 2018-11-23 | 2019-03-08 | 佛山市海明威生态科技股份有限公司 | A kind of aluminum non-chromium passivator and preparation method thereof |
CN109321906A (en) * | 2018-12-05 | 2019-02-12 | 湖南恒佳新材料科技有限公司 | A kind of anticorrosion aluminium material and preparation method thereof |
CN110607522A (en) * | 2019-10-12 | 2019-12-24 | 佛山市湾厦新材料科技有限公司 | Vitrification agent and preparation method and application thereof |
WO2021133863A1 (en) * | 2019-12-26 | 2021-07-01 | Prc-Desoto International, Inc. | Systems and methods for treating a metal substrate |
CN112301338A (en) * | 2020-07-02 | 2021-02-02 | 上海兴赛尔表面材料有限公司 | Medium-low temperature fast curing trivalent chromium passivation solution and manufacturing and using method thereof |
EP4190941A4 (en) * | 2020-07-31 | 2024-01-03 | Dipsol Chem | Chemical conversion treatment liquid, chemical conversion treatment method in which same is used, and chemical conversion coating |
Also Published As
Publication number | Publication date |
---|---|
IT1393946B1 (en) | 2012-05-17 |
EP2243863B1 (en) | 2012-06-20 |
ITMI20090665A1 (en) | 2010-10-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2243863B1 (en) | Continuous chemical patination/satinising treatment process for zinc-titanium alloys | |
JP3992173B2 (en) | Metal surface treatment composition, surface treatment liquid, and surface treatment method | |
JP3623015B2 (en) | Surface treatment liquid for aluminum-containing metal material and surface treatment method | |
US6562148B1 (en) | Pretreatment of aluminum surfaces with chrome-free solutions | |
US20040187967A1 (en) | Chemical conversion coating agent and surface-treated metal | |
US6361833B1 (en) | Composition and process for treating metal surfaces | |
US20080197020A1 (en) | Method for Producing Painted, Flat Metallic Moulded Bodies | |
EP1703000A1 (en) | Chrome-free passivating solution | |
CA2186025A1 (en) | Composition and process for treating the surface of aluminiferous metals | |
JP3349851B2 (en) | Surface treatment composition for aluminum-containing metal material excellent in sludge suppression property and surface treatment method | |
JP3333611B2 (en) | Hexavalent chromium-free chemical conversion surface treatment agent for aluminum and aluminum alloys | |
JPH0394074A (en) | Improved composition and method for imparting coating to metal surface | |
JP2004500479A (en) | A series of methods of phosphating, post-rinsing and cathodic electrodeposition | |
US6755918B2 (en) | Method for treating magnesium alloy by chemical conversion | |
JPH02305972A (en) | Composition of phosphate treating liquid of metal and treatment thereof | |
BRPI0410585B1 (en) | Process for surface treatment or pretreatment of metal objects with aqueous acid solution containing zinc and phosphate | |
KR20100102619A (en) | Zirconium phosphating of metal components, in particular iron | |
JP3682622B2 (en) | Surface treatment agent, surface treatment method, and surface-treated product | |
US6485580B1 (en) | Composition and process for treating surfaces or light metals and their alloys | |
JP2001508123A (en) | How to phosphate a steel band | |
US6200693B1 (en) | Water-based liquid treatment for aluminum and its alloys | |
KR20140044785A (en) | Processes and compositions for improving corrosion performance of zirconium oxide pretreated zinc surfaces | |
SK112598A3 (en) | Zinc phosphatizing with low quantity of copper and manganese | |
JP3542207B2 (en) | Aluminum-containing metal material surface treatment method | |
KR19990087077A (en) | Zinc-phosphatizing method using low concentration of nickel and / or cobalt |
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: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA ME RS |
|
17P | Request for examination filed |
Effective date: 20110406 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: C23C 22/83 20060101ALI20111223BHEP Ipc: C23C 22/10 20060101ALI20111223BHEP Ipc: C23C 22/53 20060101ALI20111223BHEP Ipc: C23C 22/44 20060101ALI20111223BHEP Ipc: C23C 22/73 20060101ALI20111223BHEP Ipc: B05D 7/00 20060101ALI20111223BHEP Ipc: C23C 22/08 20060101ALI20111223BHEP Ipc: C23C 22/33 20060101ALI20111223BHEP Ipc: C23G 1/20 20060101ALI20111223BHEP Ipc: C23C 22/34 20060101AFI20111223BHEP Ipc: C23G 1/10 20060101ALI20111223BHEP |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 563129 Country of ref document: AT Kind code of ref document: T Effective date: 20120715 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602010001902 Country of ref document: DE Effective date: 20120816 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120920 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20120620 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 563129 Country of ref document: AT Kind code of ref document: T Effective date: 20120620 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D Effective date: 20120620 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120921 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20121020 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20121022 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20121001 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 |
|
26N | No opposition filed |
Effective date: 20130321 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602010001902 Country of ref document: DE Effective date: 20130321 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120920 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20130430 Year of fee payment: 4 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131101 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20131231 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602010001902 Country of ref document: DE Effective date: 20131101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130414 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20140414 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140430 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140430 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140414 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140414 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20100414 Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120620 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130414 |