| 摘要 |
<p>A continuous method for the preparation of an emulsion of oil in water of desired composition is disclosed which method comprises initially preparing an HIPR emulsion of oil in water by directly mixing 70 to 98% by volume of a viscous oil having a viscosity in the range 200 to 250,000 mPa.s at the mixing temperature with 30 to 2%, by volume of an aqueous solution of an emulsifying surfactant or an alkali, percentages being expressed as percentages by volume of the total mixture; mixing being effected under low shear conditions in the range 10 to 1,000 reciprocal second in such manner that an emulsion is formed comprising distorted oil droplets having mean droplet diameters in the range of 5 to 20 microns separated by aqueous films, measuring the conductivity of the HIPR emulsion, determining the quantity of aqueous liquids to be added as diluent an diluting the HIPR emulsion with the required quantity of diluent.</p> |
