Use of inorganic acids with crosslinking agents in polymer...

Details Use of inorganic acids with crosslinking agents in polymer... Use of inorganic acids with crosslinking agents in polymer...

Filed on

2007-08-06

Date issued

2009-02-24

Examiner

Szekely, Peter (Department: 1796)

Patent Class

Synthetic resins or natural rubbers -- part of the class 520 ser

SubClass

Synthetic resins

SubSubClass

Processes of preparing a desired or intentional composition...

Type

Reexamination Certificate

Status

active

Patent number

07495045

Description

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).

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