Patent ID: 7922802

Claim:
A phase-inversion-temperature (PIT) emulsion, comprising: (a) asphalt or bitumen; (b) one or more non-ionic emulsifiers, selected from the group consisting of fatty alcohol alkoxylates, fatty acid partial glycerides, and mixtures thereof; (c) optionally, one or more cationic co-emulsifiers, and/or (d) optionally, one or more solvents, wherein said emulsion is applied to a road or roadbed, and wherein said emulsion is formed by a phase inversion temperature (PIT) process comprising the steps of: (i) subjecting an aqueous mixture of the asphalt or bitumen component (a), the non-ionic emulsifier component (b), optionally, the cationic co-emulsifier component (c), and optionally, the solvent component (d), to vigorous stirring to form a homogenous composition; (ii) heating said homogenous composition above the phase inversion temperature to obtain a PIT emulsion, and (iii) cooling said PIT emulsion, wherein said phase inversion temperature is about 95° C.