Procédé et composition pour le nettoyage et le revêtement des métaux

A metal surface is simultaneously cleaned and phosphated by means of an emulsion of a greaseremoving solvent in an aqueous acidic solution of a coating-metal phosphate, the solvent being emulsified with a non-ionic, surface-active hydrophobic polyoxyethylene condensate. Preferably the condensate con...

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Bibliographische Detailangaben
Hauptverfasser:	G. POLLARD,FRANK, S. RUSSEL,WILLIAM
Format:	Patent
Sprache:	fre
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DETERGENT COMPOSITIONS DETERGENTS DIFFUSION TREATMENT OF METALLIC MATERIAL FATTY ACIDS THEREFROM INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY RECOVERY OF GLYCEROL RESIN SOAPS SOAP OR SOAP-MAKING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION USE OF SINGLE SUBSTANCES AS DETERGENTS
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Beschreibung
Zusammenfassung:	A metal surface is simultaneously cleaned and phosphated by means of an emulsion of a greaseremoving solvent in an aqueous acidic solution of a coating-metal phosphate, the solvent being emulsified with a non-ionic, surface-active hydrophobic polyoxyethylene condensate. Preferably the condensate contains less than 50 per cent ethylene oxide by weight, and is a polyoxypropylene polyoxyethylene condensate or an alkyl aryl polyoxyethylene ethanol. The grease-removing solvent may be kerosene, tetrahydronaphthalene, methyl cyclohexanone, ethyl benzoate or o-dichlorobenzene. The emulsion may contain a mutual solvent for the polyoxyethylene condensate and the greaseremoving solvent, e.g. ethylene glycol monoalkyl ether, diacetone alcohol, toluene, isopropanol, butanol, and octyl alcohol. The phosphate solution may contain one or more phosphates of zinc, manganese, aluminium, cadmium, calcium and iron, as well as phosphoric acid and accelerators such as chlorates, nitrites, nitrates, iodates, hydrogen peroxide, sodium metanitrobenzene sulphonates, picric acid, hydroxylamine, copper fluoroborate and nickel ions. Metal surfaces which may be treated include iron, steel, zinc and aluminium.ALSO:A metal surface is simultaneously cleaned and phosphated by means of an emulsion of a grease-removing solvent in an aqueous acidic solution of a coating-metal phosphate, the solvent being emulsified with a non-ionic, surface-active, hydrophobic polyoxyethylene condensate. Preferably, the condensate contains less than 50 per cent ethylene oxide by weight, and is a polyoxypropylene polyoxyethylene condensate or an alkyl aryl polyoxyethylene ethanol. The grease-removing solvent may be kerosene, tetrahydronaphthalene, methyl cyclohexanone, ethyl benzoate or o-dichlorobenzene. The emulsion should contain a mutual solvent for the polyoxyethylene condensate and the grease-removing solvent when the latter is an aliphatic hydrocarbon. The preferred mutual solvent is an ethylene glycol monoalkyl ether; other mutual solvents are diacetone alcohol, toluene, isopropanol, butanol, and octyl alcohol. The phosphate solution may contain one or more phosphates of zinc, manganese, aluminium, cadmium, calcium and iron, as well as phosphoric acid and accelerators such as chlorates, nitrites, nitrates, iodates, hydrogen peroxide, sodium metanitrobenzene sulphonates, citric p acid, hydroxylamine, copper fluoroborate and nickel ions. Metal surfaces which may be treated include iron, steel, zinc and al