Patent ID: 6228909
Filing Date: 2001-05-08
Classification: C08K,C08L

Abstract:
A composition suitable for use as a polymer modified asphalt, said composition being made by a plurality of steps, said plurality of steps comprising:providing a source of a neat asphalt;heating said neat asphalt;providing a source of a phosphoric acid;adding said acid to said neat asphalt, after the step of heating said neat asphalt;mixing said neat asphalt for a period of time of from approximately 1 hour to approximately 2 hours, after the step of adding said acid;further heating said neat asphalt to a temperature of from approximately 300.degree. F. to approximately 400.degree. F., after the step of mixing said neat asphalt;providing a source of a polymer;adding said polymer to said neat asphalt to form a blend, after the step of further heating said neat asphalt;providing a source of a dilution asphalt;adding said blend to said dilution asphalt to form a diluted product; andmixing said diluted product.