Stabilizing clayey formations

Compositions – Leather or fur treating

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166295, 166305R, 252 85R, 252 85A, 252 855R, 252 855C, 564281, 564286, 564295, C09K 700

Patent

active

045058334

ABSTRACT:
Process for treating a clayey geological formation to prevent, inhibit or reduce swelling or migrating of clay particles in a formation by treating the formation with an effective amount of a quaternized oligomer which is the reaction product of a polyamine having a primary amino group and a tertiary amino group with a difunctional reactant to form a precondensate monomer which is then chain extended and quaternized by reaction with a dihalogenated hydrocarbon ether.
A preferred oligomer is a product of:

REFERENCES:
patent: 3349032 (1967-10-01), Krieg
patent: 3500925 (1970-03-01), Beiswanger et al.
patent: 4158521 (1979-06-01), Anderson et al.
patent: 4366071 (1982-12-01), McLaughlin et al.

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