Organic compounds

Details Organic compounds Organic compounds

1983-03-25

1985-02-26

Guynn, Herbert B.

Compositions

Leather or fur treating

252 85P, 252 855R, C09K 706

Patent

active

045016720

ABSTRACT:
A fluid loss reducing additive for an oil-based well working fluid is the product of mixing together, in an oil or oil-based fluid, lignite or humic acid with an aliphatic amide or hydroxyamide, or a cyclic derivative thereof, containing no primary or secondary amine or amine salt groups.

REFERENCES:
patent: 3168475 (1965-02-01), Jordan et al.
patent: 3281458 (1966-10-01), Jordan et al.
patent: 3594447 (1971-07-01), Wincklhofer et al.
patent: 3671427 (1972-06-01), Andrews et al.
patent: 4374737 (1983-02-01), Larson et al.
patent: 4421655 (1983-12-01), Cowan
Abstract of Russian Patent 870,427.

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