Process for the preparation of microemulsions between an acid ph

Compositions – Leather or fur treating

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75 05A, 75 841R, 166307, 252309, 252312, E21B 4327

Patent

active

045955123

ABSTRACT:
The present invention relates to a process for preparing microemulsions between an acid phase and a hydrophobic phase in which a cationic surfactant and a cosurfactant are added to the reaction medium. This process makes it possible to obtain either a microemulsion of acid-in-oil type in equilibrium with an acid phase, or a microemulsion of oil-in-acid type in equilibrium with an organic phase, or a microemulsion in simultaneous equilibrium with the organic and acid phases.
The process is applicable to numerous domains: controlled acidification, stimulatiion of oil-producing well formations, fracturing, liquid-liquid extraction of metal cations in hydrometallurgy, chemical reactions (sulfonation, sulfatation, protonic catalysis).

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patent: 3794117 (1974-02-01), Knox et al.
patent: 3831679 (1974-08-01), Presley et al.
patent: 4255270 (1981-03-01), Sitton et al.

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