Process for decorating coatings produced by heat-stable polymer compositions

A process for decorating a heat-stable polymer coating on a substrate, the process consisting essentially of applying a heat-stable polymer composition which is stable at temperatures above 300.degree. C either as a subsequent coat over or directly under or between an antioxidant composition and an oxidation catalyst composition which are both arranged in decorative patterns on a substrate and then baking the coating wherein the antioxidant or its decomposition product and the oxidation catalyst or its decomposition products diffuse into the coating and either by reacting with components of the coating, by catalyzing or hindering reactions within the coating or by themself render, upon baking, the decorative pattern visible within the heat-stable polymer coatings wherein the heat-stable polymer composition comprising:

• a. a heat-stable polymer, said polymer being silicone, polysulfide, polymerized parahydroxy benzoic acid, polysulfone, polyimide, polyamide, polysulfonate, polysulfonamide, fluorocarbons, or mixtures of the above,
• b. a liquid carrier,
• c. optionally a colorant;
• wherein the oxidation catalyst is a compound or mixture of compounds produced by reaction of a metal from list (1) with an acid to form a salt compound of list (2):
• ______________________________________ (1) Metals Cobalt Bismuth Cerium Nickel Manganese Lead Iron (2) Salts Acetate Octoate Caprate Oleate Caprylate Palmintate Isodecanoate Ricinoleate Linoleate Soyate Naphthenate Stearate Nitrate Tallate. ______________________________________