émulsion chimique

CONT: Les conditions de floculations des émulsions d'hydrocarbures ou d'huiles dépendent de la nature de celles-ci[; elles] existent sous deux formes principales : émulsions mécaniques, relativement instables [et] émulsions chimiques, relativement stables [...]

CONT: The flocculation conditions for the emulsion of hydrocarbons or oils depend on the nature of these substances. They are found in two main forms: mechanical emulsions which are relatively unstable [and] chemical emulsions that are relatively stable ...