Patent ID: 8017663

Claim:
A method for producing asphaltic foam comprising the steps of: providing an asphalt; liquefying said asphalt; adding to said asphalt one or more isocyanates, thereby forming a first intermediate mixture; bringing the temperature of said first intermediate mixture to between about 120° F. and 170° F.; forming a second intermediate mixture comprising one or more polyols, a blowing agent, and a surfactant, wherein the second intermediate mixture is segregated from the first intermediate mixture; forcing said first intermediate mixture through a first impingement dispensing head; forcing said second intermediate mixture through a second impingement dispensing head; and mixing said first intermediate mixture forced through said first impingement dispensing head with said second intermediate mixture forced through said second impingement dispensing head, thereby forming a final reaction mixture, wherein said first intermediate mixture and said second intermediate mixture react and expand in a controllable manner such that the final reaction mixture does not expand beyond a form desired in a final molded asphaltic foam or cure before taking on said form to produce said asphaltic foam.