Polymer-modified asphalt composition and process for the prepara

Details Polymer-modified asphalt composition and process for the prepara Polymer-modified asphalt composition and process for the prepara

1993-06-30

1994-07-19

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 59, 524 69, C08L 9500

Patent

active

053310284

ABSTRACT:
A polymer-modified asphalt composition containing (a) about 80 to 99.7 weight percent of a polymer-asphalt reaction product prepared by reacting (i) about 100 parts by weight of an asphalt having an initial viscosity at 60.degree. C. of from 100 to 20,000 poise, with (ii) about 0.5 to 11 parts by weight a glycidyl-containing ethylene copolymer containing about 0.1 to about 20 weight percent glycidyl moieties and having a weight-average molecular weight of from about 10,000 to about 1,000,000; and (b) about 0.3 to 20 weight percent of a styrene/conjugated-diene block copolymer having a weight-average molecular weight of from about 100,000 to about 1,000,000.

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patent: 4585816 (1986-04-01), Vitkuske et al.
Kraus, Modification of Asphalt by Block Polymers of Butadiene and Styrene, Rubber Chemistry and Technology, vol. 55, No. 5, Nov.-Dec. (1982) pp. 1389-1402.
Goodrich, Asphalt and Polymer Modified Asphalt Properties Related to the Performance of Asphalt Concrete Mixes, pp. 116-161.

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