POLYMER MODIFIED ASPHALT REACTION PRODUCTS

In a process for producing a cross-linked asphalt/polymer composition ("polymer-modified asphalt" or PMA) that comprises or is produced from asphalt and an ethylene copolymer, an anhydride is used as a promoter. The ethylene copolymer comprises copolymerized units derived from ethylene and...

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Bibliographische Detailangaben
Hauptverfasser: Dubois, Charles J, Prejean, George Wyatt
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:In a process for producing a cross-linked asphalt/polymer composition ("polymer-modified asphalt" or PMA) that comprises or is produced from asphalt and an ethylene copolymer, an anhydride is used as a promoter. The ethylene copolymer comprises copolymerized units derived from ethylene and an epoxy-containing comonomer. An improvement in asphalt properties is demonstrated without the use of an acid catalyst.