| abstract |
PURPOSE:To micronize the particles and to improve the stability of the title emulsion by mixing 100pts.wt. oil phase, 15-30pts.wt. water phase, and 10-30 pts.wt. mixed phase of a polyol and a surfactant to prepare the low-water content O/W type emulsion. CONSTITUTION:One hundred pts.wt. oil phase, 15-30pts.wt. water phase, and 10-30pts.wt. mixed phase of the polyol and the surfactant are separately frozen. The frozen material are crushed under frozen conditions and pulverized, and then the mixture of the still frozen fine particles is heated or pressed to produce the low-water content O/W type emulsion. A cetyl 2-ethylhexanoate, isopropyl myristate, etc., are used as the oil phase. Besides, glycerin, sorbitol, etc, can be exemplified as the polyol to be used as the component of the mixed phase. |