Acid-reacted polymer-modified asphalt compositions and preparati

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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524 62, 524 69, 525 545, C08L 9500, C08L 6300

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active

061179264

ABSTRACT:
An acid-reacted polymer-modified asphalt composition including (i) 80 weight percent asphalt, (ii) 0.2 to 15 weight percent polymer containing available epoxy groups, and (iii) 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 the complex modulus, low temperature creep stiffness and "m" values of the composition.

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