Cationic acrylamide chemically modified asphalts
AssigneeOwens-Corning Fiberglas Corporation
InventorsAnthony V. Grossi, Leon A. Hagelee, Louis T. Hahn, Alfred Marzocchi
Life of this patent
Estimating the term…
Abstract
Cationic chemically modified asphalts having utility for road construction, repair and maintenance, as well as a coating for various substrates including cementitious substrates, glass and metal are provided. These asphalts are obtained by reacting an acrylamide, optionally with a vinyl aromatic, with a prereacted product of asphalt, a rubber and a vinyl aromatic monomer.
Claims16
As a composition of matter, the product produced by reacting an (i) acrylamide with (ii) asphalt that has been prereacted with a vinyl aromatic monomer and a rubbery polymer and (iii) optionally, a vinyl aromatic monomer.
A process for producing a chemically modified asphalt which comprises charging into a reactor (i) an acrylamide, (ii) an asphalt that has been prereacted with a vinyl aromatic monomer and a rubbery polymer and, (iii) optionally, a vinyl aromatic monomer, and heating the materials in the reactor at an elevated temperature for several hours.
Dependencies are inferred from the claim text.