Production of bitumen compositions containing ethylene-.alpha.-o

Details Production of bitumen compositions containing ethylene-.alpha.-o Production of bitumen compositions containing ethylene-.alpha.-o

1975-04-25

1976-06-15

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4224, 260 4233, C08L 9500

Patent

active

039636593

ABSTRACT:
Homogeneous thermoplastic bituminous compositions containing up to 25 parts by weight of ethylene-.alpha.-olefin rubber, e.g. ethylene-propylene rubber, saturated or unsaturated, exhibit improved properties for all asphalt applications, e.g. pipe coating, roads, roofing, etc. The compositions are produced by heating and agitating the bitumen and rubber at above 170.degree. C., preferably 180.degree.-240.degree. C., or by subjecting the rubber to premastication before admixture with the bitumen at lower temperatures. Cross-linkable rubbers can be cross-linked in the bituminous compositions to yield high tensile strength final products.

REFERENCES:
patent: 2918940 (1959-02-01), Carr
patent: 3336252 (1967-08-01), Raichle
patent: 3395110 (1968-07-01), Crady, Jr.
patent: 3459695 (1969-08-01), Hedge
patent: 3669918 (1972-06-01), Raley, Jr.
ECD-330; DuPont Development Co., Products Report No. 18, Dec. 1961, pp. 3, 10, 18, 19.

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