Back to results
US 2005/0171223 A1Published application
Modified asphaltic foam materials
AssigneeDevpat, LLC
InventorsGeorge Thagard, Nicolae Achim
Life of this patent
Estimating the term…
Abstract
An asphaltic isocyanurate foam useful in roofing applications. Asphalt is liquified and mixed with a mixture of polyisocyanate. In a separate mixture, other chemicals, such as polyols, surfactant, catalyst, and blowing agent are combined. The mixtures are combined and reacted to form an asphaltic polyurethane foam.
Claims24
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;
- and
- mixing said first intermediate mixture with said second intermediate mixture, thereby forming a final reaction mixture, wherein said first intermediate mixture and said second intermediate mixture react to form said asphaltic foam.
4 more elements
Dependencies are inferred from the claim text.