Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2007-08-06
2009-02-24
Szekely, Peter (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
Reexamination Certificate
active
07495045
ABSTRACT:
Asphalt and polymer mixtures treated with an inorganic acid and cross-linked with sulfur and/or other crosslinkers or accelerators gives a polymer modified asphalt with improved high temperature properties. The acid should be added to the asphalt before the crosslinker.
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Superpave Series No. 1 (SP-1), 1997 printing, pp. ii-67, published by Asphalt Institute (Research Park Drive, P.O. Box 14052, Lexington, KY 40512-4052).
Buras Paul J.
Lee William
Fina Technology, Inc.
Krueger Tenley R.
Szekely Peter
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