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US 7,833,339 B2Granted
Mineral filler composition
AssigneeFranklin Industrial Minerals
InventorsRobert H. Whitaker, Allen E. Smith, David R. Puryear
Life of this patent
Estimating the term…
Abstract
A composition comprised of asphalt and filler, wherein said filler is comprised of particles that comprise an inorganic core and a coating disposed on said core, and wherein at least about 60 weight percent of said particles are smaller than about 212 microns.
Claims4
A composition comprised of asphalt and filler, wherein said filler is comprised of particles that comprise an inorganic core and a coating disposed on said core, wherein at least about 60 weight percent of said particles are smaller than about 212 microns, and wherein:
- (a) at least 95 weight percent of said filler is comprised of particles of calcium carbonate;
- (b) said composition, at a temperature of from about 425 to about 475 degrees Fahrenheit, has a viscosity of from about 2000 to about 4500 centipoise;
- (c) said asphalt has a flash point of less than 540 degrees Fahrenheit;
- (d) said coating is comprised of an amine anti-strip agent;
- (e) said particles of calcium carbonate are comprised of particles of calcium carbonate that are smaller than 100 microns;
- (f) said particles of calcium carbonate are comprised of particles of calcium carbonate that are larger than 150 microns;
- (g) at least 80 weight percent of said particles of calcium carbonate that are smaller than 100 microns are coated with said coating comprised of said amine anti-strip agent;
- and
- (h) less than 10 weight percent of said particles of calcium carbonate that are larger than 150 microns are coated with said coating comprised of said amine anti-strip agent.
6 more elements
Dependencies are inferred from the claim text.