Asphalt emulsions comprising purified hydrocarbonaceous materials as a stabilizer
AssigneeArq IP Limited
InventorsStephen Carl Paspek, John Francis Unsworth, Jeramie Joseph Adams, Jean-Pascal Planche, Rumman Ahmed
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Abstract
An oil-in-water emulsion comprising an asphalt and purified coal product (PCP) is provided, wherein the PCP is in particulate form, and wherein at least about 90% by volume (% v) of the particles are no greater than about 25 μm in diameter; wherein the PCP has an ash content of less than about 10 wt %. Methods are also provided for the use of PCP as a stabilizing additive in the manufacture of asphalt containing emulsions.
Claims22
A seal coat composition comprising an oil-in-water emulsion, the oil-in-water emulsion comprising water, an asphalt, and a purified coal product (PCP), wherein the PCP is in particulate form, wherein at least about 90% by volume (% v) of the particles are no greater than about 25 μm in diameter;
- and wherein the PCP has an ash content of less than about 10 wt %.
A method of stabilizing an asphalt-in-water emulsion to form a seal coat composition, the method comprising adding a purified coal product (PCP) to the emulsion, thereby forming the seal coat composition, wherein:
- the PCP is in particulate form;
- at least about 90% by volume (% v) of the particles are no greater than about 25 μm in diameter;
- the PCP has an ash content of less than about 10 wt %;
- and
- the PCP is added in an amount to the emulsion such that the emulsion comprises a PCP/(asphalt+PCP) ratio of at least 0.01.
Dependencies are inferred from the claim text.