2018 Volume 18 Issue 12 Pages 603-613
The authors designed and developed Polyoxyethylene/Polyoxypropylene Random Copolymer Dimethylether (EPDME) as an oil-soluble humectant that is freely soluble in both water and polaroils, chemically stable, does not dissolve plastics and is free of skin irritancy because it is not a surfactant. In addition, by utilizing special microemulsion formed by EPDME and nonionic surfactants for ultrafine emulsification, the manufacturing process which conventionally requires a large amount of energy and time, can now be changed to the quick and easy procedure of stirring at room temperature. According to the technique described above, it has become possible to encapsulate a polymer compound which could not be achieved conventionally in ultrafine emulsion or to solubilize a hardly soluble compound such as ultraviolet absorber in water. This technology will be outlined below.
