Goods & Services

Chemicals used in industry and science, in particular chemicals for surface treatment; chemicals used in electroplating, passivation, phosphating and sealing; enamel stripping agents; corrosive preparations; liquids for use in cleaning during manufacturing processes; chemicals for use in the electroplating industry, chemicals for use as auxiliaries in electroplating; electroplating additives, solutions, compositions and etching solutions; mordants for metals. Anti-corrosive preparations; colorants; mordants; preparations for the treatment of metal surfaces to resist tarnishing, attack by corrosion or attack by rust. Cleaning fluids, cleaning agents for metal, furbishing preparations; polishing preparations; degreasers; grinding preparations; cleaning preparations; detergents.

Abstract

The invention relates to an aqueous treatment solution for producing conversion coatings on metal surfaces, particularly on zinc or zinc alloy surfaces, said solution containing: Cr(III) ions at an amount of 0.1 g/l to 8.0 g/l, zirconium and/or titanium ions at an amount of 0.1 g/l to 15 g/l, organosilane-modified silicon oxide nanoparticles at an amount of between 0.1 g/l to 50 g/l, and fluoride at an amount of 0.1 g/l to 10 g/l. The claimed treatment solution allows metal materials to obtain a high level of corrosion protection, with the decorative and functional properties of the surfaces simultaneously being achieved or improved. It is also possible to avoid known problems when using heavy metal ions, particularly cobalt and chromium(VI) ions.

IPC Classes  ?

• C23C 22/34 - 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 < 6 containing fluorides or complex fluorides
• C23C 22/72 - Treatment of iron or alloys based thereon

Goods & Services

Chemicals used in industry and science, in particular chemicals for surface treatment; chemicals used in electroplating, passivation, phosphating and sealing; enamel stripping agents; corrosive preparations. Anti-corrosive preparations; wood preservatives; colorants; mordants. Furbishing preparations; polishing preparations; degreasers; grinding preparations; cleaning preparations; detergents. Lubricants. Chemistry services; chemical analyses in the field of electroplating for others; chemical process technology analyses and quality control and quality assurance relating to electroplating baths and processes; monitoring of and providing advice to electroplating companies; technical and scientific experiments and tests in the field of electroplating; corrosion protection tests, including in particular in accordance with standards (DIN, ISO, ASTM); environmental compatibility testing; rental of control and regulation software and hardware for electroplating companies; technical project planning in the field of electroplating.

Goods & Services

Chemicals used in electroplating, metal and phosphate-layer passivation, and phosphating of metal; chemicals used for depositing a layer of metal on a metal or plastic substrate; chemicals used in preparing metal surfaces for electroplating; chemicals for acid pickling for iron and steel, for decalcifying, deburring, derusting, and descaling, and for aluminum pickling and brightening; etching mordants; chemicals for electrolytic coloration of metal surfaces; all of the foregoing goods for use in metal finishing [ Blackening colorants for black coatings on iron and steel; colorants for use on ferrous and non-ferrous metals; anti-corrosive coatings for use in the metal finishing industry; all of the foregoing goods for use in metal finishing ] [ lubricants for use in metal finishing ] [ Chemistry consultation; chemical analyses in the field of electroplating for others; chemical process analyses for others in the field of electroplating; quality control analysis and advice and quality assurance analysis and advice for others in the field of electroplating baths and electroplating processes; monitoring of electroplating baths and processes in order to provide chemical and technological advice with respect thereto; providing chemical, scientific and technological advice to electroplating companies regarding electroplating baths and processes; technical and scientific experiments and tests of electroplating baths and processes in the field of electroplating; scientific and technological services, namely, testing in the field of protection of metals from corrosion; environmental compatibility testing; rental of control and regulation software and hardware for electroplating companies; engineering services, namely, technical project planning in the field of electroplating ]

Goods & Services

(1) Chemicals used in industry and science, namely, chemicals for surface treatment; chemicals used in electroplating, passivation, phosphating and sealing; enamel stripping agents; corrosive preparation, namely, pickling preparations, namely, liquid scale and surface compound removers and etching preparations, namely, liquid surface layer removers in the field of industrial surface treatment; anti-corrosive liquids, sprays, sealants to protect metal; wood preservatives; colorants, namely, dyes and blackening agents, namely, pigments in the field of industrial surface treatment; mordants, namely, etching compositions for metals or electroplating; brightening preparations, namely, a gloss for application to a metal surface in the field of industrial surface treatment; polishing preparations, namely, polish for metal surfaces; industrial degreasers for use in the field of metal and electroplating; industrial grinders for use in the field of metal and electroplating; cleaning preparations, namely, industrial cleaners, polishes, degreasers, detergents for use on metals and electroplating; industrial lubricants, namely, oils and greases for use on metals and electroplating. (1) Chemistry services, namely, conducting environmental compatibility testing, namely, testing industrial methods to comply with standards and laws in the field of industrial surface treatment; chemical monitoring; testing of processes, operation and waste waters of electroplating industries; chemical analyses in the field of electroplating for others; chemical process technology analyses and quality control and quality assurance relating to electroplating baths and processes, monitoring and providing advice, namely, providing industrial standards information and local environmental standards to companies in the field of metal and electroplating industries; technical and scientific experiments and test in the field of electroplating; corrosion protection tests, including in particular in accordance with standards (DIN, ISO, ASTM); environmental compatibility testing services to ensure industry and environmental standards and reporting to companies in the field of metal and electroplating; rental of control and regulation software and hardware for electroplating companies; technical project planning in the field of electroplating.

Goods & Services

Chemicals used in industry and science, in particular chemicals for surface treatment; chemicals used in electroplating, passivation, phosphating and sealing; enamel stripping agents; corrosive preparations; none of the aforesaid to include extinguishing compositions, anti-foaming and de-foaming compositions and preparations. Anti-corrosive preparations; wood preservatives; colorants; mordants. Furbishing preparations; polishing preparations; degreasers; grinding preparations; cleaning preparations; detergents. Chemistry services; chemical analyses in the field of electroplating for others; chemical process technology analyses and quality control and quality assurance relating to electroplating baths and processes; monitoring of and providing advice to electroplating companies; technical and scientific experiments and tests in the field of electroplating; corrosion protection tests, including in particular in accordance with standards (DIN, ISO, ASTM); environmental compatibility testing; rental of control and regulation software and hardware for electroplating companies; technical project planning in the field of electroplating.

Abstract

An object of the present invention is to enhance the stability of a hexavalent chromium-free surface treatment liquid for forming a black conversion layer. According to the present invention, there is provided a hexavalent chromium-free surface treatment solution for forming a black conversion layer on zinc or zinc alloy, containing trivalent chromium, an organic acid, an inorganic acid, and a coloring material which makes the conversion layer black, wherein the coloring material contains metal whose concentration in the solution falls within a range of 0.01 g/L to 3 g/L, wherein a molar ratio of the sum of the metal in the coloring material and trivalent chromium with respect to carboxy group falls within a range of 0.1 to 0.3, and wherein a pH value of the solution is equal to or larger than 3 and smaller than 6.

IPC Classes  ?

• C23C 22/46 - 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 < 6 containing oxalates

Goods & Services

Corrosive products; bleaching preparations; galvanizing, phosphatizing and chromatizing products; caustics for industrial use. Preservatives against rust and against deterioration of wood; mordants, products against corrosion. Cleaning, polishing, degreasing and abrasive preparations; soaps; rust removing products; products for removing dyestuff and paint colorants and varnishes; scouring solutions; sharpening products. Lubricants.