Metal pigment dispersions, process for the production thereof and use thereof
AssigneeEckart-Werke Standard-Bronzepulver-Werke
InventorsGunter Sommer, Colin Appleyard
Life of this patent
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Abstract
Metal pigment dispersions are proposed, which comprise flake-form metal pigments produced by crushing and binding agent or binding agent solution which contain no or less than 0.01% by weight of reaction or decomposition products of fatty acids which result from the reaction with the metal pigment in the presence of oxygen in the air. Also described is a process for the production of those metal pigment dispersions, wherein the metal pigment is crushed with the binding agent in a ball crusher, and the use of those metal pigment dispersions for the production of paints or lacquers and inks, in particular printing inks.
Claims36
A process for the production of a flake metal dispersion for use in a paint, lacquer or ink, wherein the flake metal used in the dispersion is selected from the group consisting of aluminum, copper, zinc, and alloys thereof, said process comprising crushing between about 10% and about 80% by weight of a metal powder in the presence of between about 90% and about 20% by weight of at least one crushing aid selected from the group consisting of resins of alkyds, polyesters, polyvinyls, polyvinyl chlorides, polyacrylates, polymethacrylates, polystyrenes, coumarone-indenes, polyurethanes, cellulose derivatives, hydrocarbons, ketones, aldehydes, aromatic formaldehyde, and natural oils, and containing no fatty acids or derivatives of fatty acids, and no white spirits, wherein said crushing aid also serves as the binding agent for the paint, lacquer or ink.
A process for the production of a flake metal dispersion for use in a paint, lacquer or ink, wherein the flake metal used in the dispersion is selected from the group consisting of aluminum, copper, zinc, and alloys thereof, said process comprising crushing between about 10% and about 80% by weight of a metal powder in the presence of between about 90% and about 20% by weight of a solution of at least one crushing aid selected from the group consisting of resins of alkyds, polyesters, polyvinyls, polyvinyl chlorides, polyacrylates, polymethacrylates, polystyrenes, coumarone-indenes, polyurethanes, cellulose derivatives, hydrocarbons, ketones, aldehydes, aromatic formaldehyde, and natural oils, and containing no fatty acids or derivatives of fatty acids, and no white spirits, wherein the dissolved crushing aid solution also serves at least in part as the binding agent solution for the paint, lacquer or ink.
A dispersion of a metal pigment selected from the group consisting of aluminum, copper, zinc, and alloys thereof, for use in a paint, lacquer, or ink, said dispersion produced by crushing between 10% and 80% by weight of a metal powder having a particle size less than 30 microns, in the presence of between 90% and 20% by weight of at least one crushing aid selected from the group consisting of resins of alkyds, polyesters, polyvinyls, polyvinyl chlorides, polyacrylates, polymethacrylates, polystyrenes, coumarone-indenes, polyurethanes, cellulose derivatives, hydrocarbons, ketones, aldehydes, aromatic formaldehyde, and natural oils, and said dispersion containing less than 0.01% by weight of decomposition products of fatty acids or fatty acid derivatives which might be smell-forming reaction products and no residues of white spirits.
A dispersion of a metal pigment selected from the group consisting of aluminum, copper, zinc, and alloys thereof, for use in a paint, lacquer, or ink, said dispersion produced by crushing between 10% and 80% by weight of a metal powder having a particle size less than 30 microns, in the presence of between 90% and 20% by weight of a solution of at least one crushing aid selected from the group consisting of resins of alkyds, polyesters, polyvinyls, polyvinyl chlorides, polyacrylates, polymethacrylates, polystyrenes, coumarone-indenes, polyurethanes, cellulose derivatives, hydrocarbons, ketones, aldehydes, aromatic formaldehyde, and natural oils wherein the crushing aid serves as a binding agent for the paint, lacquer or ink, said dispersion containing less than 0.01% by weight of decomposition products of fatty acids or fatty acid derivatives which might be smell-forming reaction products, and no residues of white spirits.
The process for avoiding offensive odors in flake metal dispersions useful for paints, lacquers and inks, wherein a flake metal is produced by crushing a powder of a metal selected from the group consisting of aluminum, copper, zinc and alloys thereof in the presence of a crushing aid, but in the absence of fatty acids or fatty acid derivatives which would result in the formation of a decomposition product in an amount greater than 0.01% by weight in the dispersion, the crushing aid also serving as a binding agent for the flake metal in the paints, lacquers or inks.
Dependencies are inferred from the claim text.