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US 4,719,132 AGranted
Process for the preparation of multi-layered coatings and coated articles derived therefrom
AssigneePPG Industries, Inc.
InventorSamuel Porter, Jr.
Life of this patent
Estimating the term…
Abstract
A process for producing multi-layered coated articles is disclosed. The process comprises applying a pigment containing aqueous polyurethane film-forming composition to a substrate to form a basecoat followed by the application of a transparent topcoat to the basecoat.
Claims22
A process for applying a composite coating to a substrate comprising:
- (1) applying to the surface of the substrate an aqueous-based film-forming composition containing color pigments and a water-dilutable polyurethane binder,
- (2) forming a basecoat on the surface of the substrate from the composition applied from step 1,
- (3) applying to said basecoat a film-forming composition,
- (4) forming a transparent topcoat from the composition applied in step 3 over the basecoat.
1 more element
A process for applying a composite coating to a substrate comprising both metallic and elastomeric parts, comprising:
- (1) spraying the substrate with an aqueous-based coating composition containing metallic pigments and a water-dilutable poly(ester-urethane) binder which is formed by chain extending an NCO-poly(ester-urethane) prepolymer in aqueous medium with an active hydrogen-containing compound having at least two active hydrogen groups which are more reactive with NCO groups than water;
- (2) forming a basecoat on the surface of the substrate from the composition applied from step 1;
- (3) applying to said basecoat a film-forming composition from a two-package organic solvent-based system comprising a polyurethane polyol and a polyisocyanate, said film-forming composition being sprayable at a resin solids content of at least 40 percent by weight;
- (4) forming a transparent topcoat from the composition applied from step 3.
1 more element
Dependencies are inferred from the claim text.