Acid-reacted polymer-modified asphalt compositions and preparation thereof
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United States of America Patent
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Jun 4, 2002
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N/A
app pub date -
Aug 22, 2000
filing date -
Mar 13, 1995
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Abstract
An acid-reacted polymer-modified asphalt composition comprising (1) at least about 80 weight percent, based upon the composition, of an asphalt; (ii) about 0.2 to about 15 weight percent, based upon the composition, of a polymer containing available epoxy groups; and (iii) an amount of an acid effective for promoting chemical bonding between the asphalt and the polymer, wherein the composition exhibits substantially improved Dynamic Shear Rheometer stiffness values without an appreciable loss in the G' viscous component of complex modulus, and low temperature creep stiffness and 'm' values.
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Cited Art Landscape
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