Process for application of durable fast drying multi-coat organic coating system
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Abstract
Disclosed is a process comprising application of one or more successive hot-melt coatings to solid surfaces of an article or alternatively to a pavement surface, immediately followed by application of a water-thinned coating to the hot-melt coating. Preferred articles are comprised of forest products or ferrous metals and may be for interior or exterior use. This coating system can function as a primer applied at the point of manufacture of the article and intended to receive one or more additional coats of conventional paint. Alternatively, it can function as a finished coating system. Coating systems applied to pavement can be for lane marking. Coatings can be formed that are very durable on difficult forest product surfaces and can be designed to emit virtually no air pollutants and to be free of toxic or flammable solvents.
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Citations
39 Claims
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1-19. -19. (canceled)
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20. A process, comprising:
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(A) applying a first hot-melt organic coating to one or more manufactured solid surfaces at the point of manufacture of said solid surfaces; wherein the solid surface comprises ferrous metal or a forest product based material; and wherein the first hot-melt organic coating wets and adheres to said solid surface; and wherein the first hot-melt organic coating comprises less than 5 percent by weight of volatile materials and is a solid at ambient temperature but liquefied at elevated temperatures;
then(B) applying a water-thinned organic protective coating to the first hot-melt organic coating; wherein the water-thinned organic protective coating is not a bituminous coating; wherein the water-thinned organic protective coating is applied while the first hot-melt organic coating is in a molten state; wherein the water-thinned organic protective coating wets and adheres to the first hot-melt organic coating;
then(C) solidifying the first hot-melt organic coating by cooling;
followed by or simultaneously(D) drying the water-thinned organic protective coating by evaporation of volatile materials to form a dried film; whereby a durable protective coating system can be provided; wherein said durable protective coating system can be either a primer intended to be re-coated with a conventional finish, or alternatively can be a finish. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A process, comprising:
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(A) applying a first hot-melt organic coating to one or more manufactured solid surfaces at the point of manufacture of said solid surfaces; wherein the solid surface comprises a ferrous metal or a forest product-based material, and wherein the first hot-melt organic coating comprises less than five percent by weight of volatile materials and is a solid at ambient temperature but liquefied at elevated temperatures; and wherein the first hot-melt organic coating comprises less than about 25 parts by weight of a hydrogenated block copolymer per 100 parts by weight of total polymer contained therein;
then(B) solidifying the first hot-melt organic coating by cooling;
followed by(C) applying a water-thinned organic protective coating to the first hot-melt organic coating; wherein the water-thinned organic protective coating is applied while the first hot-melt organic coating is in a solid state; wherein the water-thinned organic protective coating wets and adheres to the first hot-melt organic coating;
then(D) drying the water-thinned organic protective coating by evaporation of volatile materials to form a dried film; whereby a durable protective coating system can be provided; wherein said durable protective coating system can be either a primer intended to be re-coated with a conventional finish or, alternatively, can be a finish coat.
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32. A process, comprising:
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(A) applying a first hot-melt organic coating to one or more solid surfaces wherein the solid surface comprises pavement and wherein the first hot-melt organic coating wets and adheres to the solid surface; and wherein the first hot-melt organic coating comprises less than 5 percent by weight of volatile materials and is a solid at ambient temperature but liquefied at elevated temperatures;
then(B) applying a water-thinned organic protective coating to the first hot-melt organic coating wherein the water-thinned organic protective coating is sufficiently opaque to ultraviolet solar radiation to provide protection to the hot-melt organic coating for the expected life of the coating system; wherein the water-thinned organic protective coating is not a bituminous coating; wherein the water-thinned organic protective coating is applied while the first hot-melt organic coating is in a molten state; wherein the water-thinned organic protective coating wets and adheres to the first hot-melt organic coating;
then(C) solidifying the first hot-melt organic coating by cooling;
followed by or simultaneously(D) drying the water-thinned organic protective coating by evaporation of volatile materials to form a dried film; whereby a durable stripe for pavement marking can be provided;
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33. A manufactured article coated at its point of manufacture with an organic coating system consisting essentially of two or three successive coats of coatings of different compositions;
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wherein the manufactured article comprises ferrous metal or a forest product-based material; wherein the first coat is a hot-melt organic coating;
comprising less than about 25 parts by weight of a hydrogenated block copolymer per 100 parts by weight of total polymer contained therein;wherein a subsequent coat, except the final coat, is a hot-melt organic coating comprising less than about 25 parts by weight of a hydrogenated block copolymer per 100 parts by weight of total polymer contained therein; wherein a final coat is a water-thinned organic protective coating and wherein the water-thinned organic protective coating is not a bituminous coating. - View Dependent Claims (34, 35, 36, 37, 38, 39)
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Specification