Production of pigments
AssigneeDahlia Ireland Limited
InventorsArun Kumar Chattopadhyay, Thomas Aquinas Barry
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Abstract
Metal pigment, especially aluminum pigment is produced in a non toxic environment by milling and/or blending in an inert medium comprising transesterified alkyl, especially methyl esters of vegetable oils selected from soybean oil, cotton seed oil and linseed oil. The metallic pigments produced are of improved quality and appearance. They have improved brightness and the non-leafing pigments produced have highly leafing characteristics.
Claims15
A coating composition comprising a metallic pigment forming 65 wt % of the total mass and selected from the group consisting of aluminum, gold/bronze, zinc and stainless steel and an inert medium of trans-esterified alkyl esters of vegetable oils selected from the group consisting of soybean oil, cotton seed oil, rapeseed oil, sunflower oil and linseed oil.
A method for manufacturing a metallic pigment coating composition comprising the step of contacting metallic particles forming 65 wt % of the total mass and selected from the group consisting of aluminum, gold/bronze, zinc and stainless steel with an inert medium of trans-esterified alkyl esters of vegetable oils selected from the group consisting of soybean oil, cotton seed oil, rapeseed oil, sunflower oil and linseed oil.
A doping system comprising a metallic pigment forming 65 wt % of the total mass and selected from the group consisting of aluminum, gold/bronze, zinc and stainless steel and an inert medium of trans-esterified alkyl esters of vegetable oils selected from the group consisting of soybean oil, cotton seed oil, rapeseed oil, sunflower oil and linseed oil.
A metallised plastics composition comprising a metallic pigment forming 65 wt % of the total mass and selected from the group consisting of aluminum, gold/bronze, zinc and stainless steel and an inert medium of trans-esterified alkyl esters of vegetable oils selected from the group consisting of soybean oil, cotton seed oil, rapeseed oil, sunflower oil and linseed oil.
Dependencies are inferred from the claim text.