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US 4,025,665 AGranted
Process for coating surfaces with metal-containing powder coating compositions
AssigneeCelanese Corporation
InventorMartin J. Hannon
Life of this patent
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AssigneeCelanese Corporation
InventorMartin J. Hannon
Estimating the term…
The metal platelets contained in a metal-containing powder coating composition may be oriented substantially parallel to a surface coated with this composition by the process herein described. This process comprises (a) coating the metal-containing powder coating composition on the surface, (b) heating the coated surface in order to melt the metal-containing powder coating composition, (c) simultaneous with the heating step, blowing a stream of hot fluid substantially parallel to the coated surface so as to orient the metal platelets substantially parallel to the surface, and (d) cooling the coated surface after the metal platelets have become oriented substantially parallel to the surface. Contoured surfaces coated in accordance with this process have an appearance of depth similar to that obtained using a solvent system metallic paint.
In a process for coating a metal-containing powder coating composition containing resin and metal platelets on a surface by (a) coating said metal-containing powder composition on said surface, (b) heating said coated surface in order to melt said metal-containing powder coating composition, (c) cooling said coated surface the improvement comprising:
In a process for coating a metal-containing powder coating composition on a surface by (a) coating said metal-containing powder coating composition on said surface, (b) heating said coated surface in order to melt said metal-containing powder coating composition, (c) continuing to heat said coated surface until said resin becomes cured, and (d) cooling said coated surface wherein said metal-containing powder coating composition comprises from about 60 to about 90% by weight resin, from about 10 to about 35% by weight curing agent, and from about 1 to about 10% by weight metal platelets the improvement comprising:
A process for coating an aluminum flake-containing acrylic powder coating composition on a horizontal surface, said aluminum flake-containing acrylic powder coating composition comprising from about 65 to about 85% by weight of an acrylic resin, from about 15 to about 30% by weight of blocked triisocyanate, prepared by reacting three moles of 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethylcyclohexane with 1 mole of 1,1,1-tris-(hydroxymethyl) propane in methyl isobutyl ketone followed by blocking with methyl ethyl ketoxime, from about 1.25 to about 5% by weight of aluminum flake, and from about 1 to about 5% by weight of phthalocyanine blue pigment, such that, upon curing of said acrylic resin, said aluminum flake assumes an orientation parallel to said surface, said process comprising:
Dependencies are inferred from the claim text.