Process of forming crystals for use in a personal care composition

摘要

A method of making a stable detersive surfactant containing personal care composition comprising the steps of emulsifying a stabilizing agent in the presence of anionic surfactant to form an emulsion containing droplets having a particle size of from about 0.1 to about 10 um. These particles are then cooled to form a stabilizing premix at a rate of about 10 to about 1000 C/min to form crystals from the droplets, the crystals having a maximum dimension of about 0.1 to about 3 um. These crystals are then added to a detersive surfactant containing personal care composition to increase stability.

主权项

1. A method of making a stable, detersive surfactant-containing antimicrobial personal care composition, said method comprising:
(a) emulsifying from about 4% to about 30% of a stabilizing agent in the presence of about 2% to about 30% of an anionic surfactant at a temperature of about 70° C. to about 75° C. to form an emulsion, wherein:
(i) the stabilizing agent is ethylene glycol distearate (EGDS),(ii) the anionic surfactant is selected from the group consisting of an alkyl sulfate, an alkyl ether sulfate, or a combination thereof, and(iii) the formed emulsion contains droplets having a particle size of about 0.1 to about 10 μm; (b) cooling the emulsion of step (a) at a rate of about 10 to about 1000° C./minute to a temperature of about 25° C. to about 35° C. to form a stabilizing premix, wherein the stabilizing premix comprises crystals formed from the emulsion droplets, said crystals having a mean length of about 0.1 to about 3 μm and an aspect ratio of about 2 to about 1000; and (c) adding the stabilizing premix of step (b) to a detersive surfactant-containing antimicrobial personal care composition.