Metal surface treatment composition and process

Disclosed is a surface treating agent which improves the adhesive properties between a metal surface and a paint layer thereon. The surface treating agent is an acidic aqueous solution comprising zinc ion, nickel ion and phosphate ion, characterized by adding a cyclic metaphosphate thereto in the fo...

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Bibliographic Details
Main Authors ENDO, KOETSU, TOKUYAMA, AKIO
Format Patent
LanguageEnglish
French
German
Published 23.05.1990
Subjects
CHEMICAL SURFACE TREATMENT
CHEMISTRY
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
DIFFUSION TREATMENT OF METALLIC MATERIAL
INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL
METALLURGY
SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Summary:Disclosed is a surface treating agent which improves the adhesive properties between a metal surface and a paint layer thereon. The surface treating agent is an acidic aqueous solution comprising zinc ion, nickel ion and phosphate ion, characterized by adding a cyclic metaphosphate thereto in the form of (MPO3)n wherein M represents a metal atom and n is an integer of at least 4 in a concentration of 20 to 600 mg/l.
Bibliography:Application Number: EP19890310796