COMPOSITION DE REVETEMENT DE SUBSTRAT METALLIQUE

摘要

A coating composition (I) for metal substrates with an outer surface consisting of a layer of zinc or aluminum or their alloys contains: (A) 5-30 wt% sodium, potassium or lithium silicate; (B) 0-1 wt% surfactant; and (C) water (to 100%). Independent claims are also included for (1) metallic substrates coated with (I) (2) a method for the application of (I) to metal substrates as above by depositing a suitably thin, wet film of (I) and then drying the film.