Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue
Patent
1996-09-11
1998-03-17
Brunsman, David
Compositions: coating or plastic
Coating or plastic compositions
Bituminous material or tarry residue
1062811, 208390, C08L 9500, C09D19500, C10G 104
Patent
active
057282021
ABSTRACT:
Tar sand and Gilsonite are preferably crushed together so that the Gilsonite overcomes the stickiness of the tar sand and the tar sand alleviates Gilsonite dust, the relative proportions and the character of Gilsonite being such as to produce an additive product for an asphalt, usually refinery asphalt, and a resulting modified asphaltic cement for paving purposes to simulate Trinidad Lake Asphalt. One embodiment of the additive composition of the invention results in an asphaltic cement that outperforms that produced by use of Trinidad Lake Asphalt as the additive, while a second embodiment of the additive composition of the invention contains additional tar-sand-extracted bitumen and the resulting asphaltic cement more closely matches the performance of that containing Trinidad Lake Asphalt as the additive. The invention includes a system for extracting bitumen from tar sand and in one form provides for adding Gilsonite to the extracted liquid bitumen so it will effectively solidify when cooled.
REFERENCES:
patent: 5196058 (1993-03-01), Merrell
"Trinidad Lake Asphalt 4", D. C. Broome, Wells Ltd., London, England.
"Asphalts and Allied Substances", Herbert Abraham, Historical Review and Natural Raw Materials, vol. One, D. VanNostrand Company, Inc., Princeton, New Jersey, pp. 164 and 221.
Christensen Kenneth Clark
Nelson Roy E.
Nuzzolo Michael
American Gilsonite Company
Brunsman David
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