Method for improving the storage stability of polymer modified a

Details Method for improving the storage stability of polymer modified a Method for improving the storage stability of polymer modified a

1989-08-23

1991-12-03

Lieberman, Allan M.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 59, 524 68, 524 70, 524 71, C08L 9500

Patent

active

050701231

ABSTRACT:
This invention relates to a composition and method for improving the storage stability of polymer modified asphalts. More specifically, the storage stability of an asphalt which contains greater than 1.0 wt. % polymer can be improved by adding the polymer to an asphalt which has previously been reacted with an inorganic acid. The storage stable acid treated polymer modified asphalt thus produced is particularly well suited for use as a binder in paving materials and as a coating or saturant for roofing shingles.

REFERENCES:
patent: 4440886 (1984-04-01), Kraus
patent: 4460723 (1984-07-01), Rollmann
patent: 4882373 (1989-11-01), Moran

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