Combined dispersant fluid loss control additives

Details Combined dispersant fluid loss control additives Combined dispersant fluid loss control additives

1984-07-19

1985-12-31

Guynn, Herbert B.

Compositions

Leather or fur treating

252 85C, C09K 702

Patent

active

045619867

ABSTRACT:
Water soluble polymer compositions containing polyacrylic acid and copolymer of itaconic acid and acrylamide are useful as combined dispersant and fluid loss control additives for aqueous drilling fluids, particularly fresh water, gypsum and seawater muds. An example is a polymer composition containing about 80% by weight polyacrylic acid and about 20% by weight copolymer of itaconic acid and acrylamide in its ammonium salt form.

REFERENCES:
patent: 2552775 (1951-05-01), Fischer et al.
patent: 2718497 (1955-09-01), Oldham et al.
patent: 3334072 (1967-08-01), Sellet
patent: 3764530 (1973-10-01), Burland et al.
patent: 4476029 (1984-10-01), Sy et al.
CA77:165531b (1972).
CA87:25579e (1977).
Encyclopedia of Chemical Technology, Third Edition, vol. 17 (Kirk-Othmer), pp. 154-157.

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