Patent ID: 6245850
Filing Date: 2001-06-12
Classification: C08L,C09D

Abstract:
An asphaltic emulsion for coating a surface, said emulsion having a high reflectivity, the emulsion comprising bentonite clay, asphalt, and water, and produced by: preparing a slurry at a temperature of from 100.degree. to 130.degree. F. of bentonite clay and water with a dispersant; preheating an asphalt having a softening point of from about 100.degree. to about 180.degree. F. to a temperature within the range from about 240.degree. to about 320.degree. F.; and mixing said slurry with said asphalt while agitating at a shearing speed of about 2000 rpm to emulsify the slurry and asphalt into a paste; cooling said paste to below about 100.degree. F.; blending at low shear, between about 1% and about 25% by weight titanium dioxide pigment, and a small quantity of diatomaceous earth filler into said paste so that the resulting paste has a white to light gray color and a soft consistency.