Active polymer modification of bitumen for use in roofing materials

A modified bitumen consisting of a polyurethane wherein the polyisocyanate or polyisocyanate-dominated polyurethane prepolymer (or prepolymers) is first reacted with the bitumen to take advantage of the bitumen's hydroxyl and amine functionality and form an isocyanate-bitumen adduct to form a w...

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Bibliographische Detailangaben
Hauptverfasser: Smith, Jason D, Rus, Melissa, Sokol, David, Holland, Julia, Mellott, II, Joseph W
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A modified bitumen consisting of a polyurethane wherein the polyisocyanate or polyisocyanate-dominated polyurethane prepolymer (or prepolymers) is first reacted with the bitumen to take advantage of the bitumen's hydroxyl and amine functionality and form an isocyanate-bitumen adduct to form a weatherproofing product.