Colored bituminous materials a method of obtaining them and a coloring composition for carrying out the method
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United States of America Patent
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Jun 20, 2000
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N/A
app pub date -
Nov 9, 1998
filing date -
Nov 7, 1997
priority date (Note) -
Expired
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Abstract
The invention consists of a method of obtaining colored bituminous materials consisting of: applying onto at least one surface of the material to be treated, an aqueous coloring composition based on pigments and resin with a restricted range of solubility, drying the material coated with the coloring composition then impregnating it with bitumen.
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