Polyethylene modified asphalts

Details Polyethylene modified asphalts Polyethylene modified asphalts

1987-07-15

1989-09-19

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 62, 524 64, C08L 2304, C08L 9500

Patent

active

048682330

ABSTRACT:
The present invention relates to an improved polyethylene modified asphaltic composition and a method for its manufacture. More specifically, when certain linear polyethylene compounds are added to an asphalt that is low in asphaltenes but relatively high in saturates, there results a composition which has excellent storage stability, phase compatibility and creep resistance relative to unmodified asphalts. The improved asphaltic composition is particularly well suited for use as a binder in paving materials and as a coating or saturant for roofing products.

REFERENCES:
patent: 4314921 (1982-02-01), Biegenzein
patent: 4328147 (1982-05-01), Chang et al.
Jew et al., Journal of Applied Polymer Science, 31, pp. 2685-2704 (1986).
Transportation and Road Research Laboratory Report 1101 by Denning, J. H. et al, Highways and Structures Department, Crowthorne, Berkshire, England (1983).

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