Sulfonated asphalt/causticized lignite blend

Details Sulfonated asphalt/causticized lignite blend Sulfonated asphalt/causticized lignite blend

1985-05-23

1987-02-24

Guynn, Herbert B.

Compositions

Leather or fur treating

252 8515, C09K 702

Patent

active

046456090

ABSTRACT:
A well-working fluid such as a drilling mud containing a mixture of sulfonated asphalt and a causticized lignite. The use of the mixture gives a less expensive composition than would be the case with pure sulfonated asphalt and at the same time results in a higher quality fluid in that foaming is reduced and on balance the rheological properties are improved. The invention is of particular applicability in drilling muds using conventional ingredients such as clays and polymeric thickening agents such as CMC.

REFERENCES:
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patent: 3352902 (1967-11-01), Moschopedis
patent: 3629105 (1971-12-01), Weiss
patent: 3738437 (1973-06-01), Scheuerman
patent: 4385999 (1983-05-01), McCrary
patent: 4404108 (1983-09-01), Cates
patent: 4420405 (1983-12-01), McCrary

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