Process for decorating coatings produced by heat-stable polymer compositions
AssigneeE. I. Du Pont de Nemours and Company
InventorEustathios Vassiliou
Life of this patent
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Abstract
The appearance of a heat-stable polymer coating is enhanced by a process which produces a decorative pattern within a coating produced by a heat-stable polymer coating composition. The process consists of applying a heat-stable polymer composition as a subsequent coat over or directly under an antioxidant composition which diffuses into the heat-stable polymer coating composition and renders the pattern visible, upon baking, within the baked coat produced by the coating composition.
Claims16
A process for preparing a decorative coating on a substrate, comprising the following steps, with (a) and (b) performed in any order:
- a. applying to a substrate a composition comprising
- 1. a heat-stable polymer;
- 2. a colorant;
- 3. optionally, an antioxidant;
- and
- 4. a liquid carrier;
- and
- b. applying to a substrate, in a decorative pattern, a composition comprising
- 1. an antioxidant;
- 2. a liquid carrier;
- and
- 3. optionally, one or more of a heat-unstable organic compound which decomposes to produce a colorant;
- and then heating the resulting coating to the heat-stable polymer fusion temperature wherein the heat stable polymer composition is stable at temperatures above 300.degree. C and the heat-stable polymer is a silicone, polysulfide, polymerized p-hydroxy-benzoic acid, a polysulfone, a polyimide, a polyamide, a polysulfonate, a polysulfonamide, a fluorocarbon polymer, or a mixture thereof.
An article bearing a decorative coating, prepared according to the process of Claim 16.
Dependencies are inferred from the claim text.