ANTI-CORROSIVE PAINT

Anti-corrosion coating comprises a pigment salt (I) dispersed in a binder, (I) comprising a polyvalent metal cation (II) and an organic polyphosphonic acid (III) contg. at least two phosphonic acid gps., the mol. ratio of (II) to (III) being at least 0.8/n:1 where n=valency of the metal ion. Pref. (...

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Bibliographische Detailangaben
Hauptverfasser:	NUNN MICHAEL J, MITCHELL MICHAEL J, BAXTER KENNETH F, REEDER FRANK
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CORRECTING FLUIDS DIFFUSION TREATMENT OF METALLIC MATERIAL DYES FILLING PASTES INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INKS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NATURAL RESINS NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Anti-corrosion coating comprises a pigment salt (I) dispersed in a binder, (I) comprising a polyvalent metal cation (II) and an organic polyphosphonic acid (III) contg. at least two phosphonic acid gps., the mol. ratio of (II) to (III) being at least 0.8/n:1 where n=valency of the metal ion. Pref. (I) has the formula M(x)R(PO3)(m)H(2m-Xn), where M=Zn, Mn, Mg, Ca, Ba, Al, Co, Fe, Sr, Sn, Zr, Ni, Cd or Ti; R=organic radical linked by C-P bonds; m=valency of R (at least 2); n= valency of M and x=0.8 m/n to 2m/n. Process is used for coating iron and steel structural components etc. Coating affords better rusting protection than Zn phosphate whilst avoiding chemicals which are helath hazards.