Fluid loss additive for cement

Compositions – Leather or fur treating

Patent

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Details

252 85A, 252 85C, 526287, 524547, C09K 702, C08L 3302

Patent

active

045684715

ABSTRACT:
An aqueous solution of a terpolymer, useful as fluid loss agent for drilling muds and not for cement slurries, is treated with acid and heat. An excellent fluid loss agent for cement is obtained. Very efficient liquid additive, for all purposes, which does not modify either the rheology, nor substantially the setting time.

REFERENCES:
patent: 3927717 (1975-12-01), Tate
patent: 3994852 (1976-11-01), Adams et al.
patent: 4048077 (1977-09-01), Engelhardt et al.
patent: 4309329 (1982-01-01), Lucas et al.
patent: 4340525 (1982-07-01), Hubner et al.
patent: 4357245 (1982-11-01), Engelhardt et al.

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