Polymer-modified asphalt with a crosslinking agent and methods of preparing
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United States of America Patent
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Jun 12, 2012
Grant Date -
Aug 11, 2011
app pub date -
Feb 11, 2010
filing date -
Feb 11, 2010
priority date (Note) -
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Abstract
Methods of preparing a cross-linked, polymer-modified asphalt is provided. The method involves adding a crosslinking agent to asphalt prior to the addition of a crosslinkable polymer and an acid. Asphalt prepared by the disclosed methods exhibit improved properties such as properties measured by the Multiple Stress Creep Recovery (MSCR) test.
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