| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for continuously producing HIPR silicone in aqueous emulsions, wherein the method uses low shear devices, and thus the temperature of the emulsions is kept low, while enhanced size and viscosity are obtained. SOLUTION: The continuous method for preparing a high internal phase silicone in aqueous emulsion comprises: (a) supplying a predetermined amount of a continuous phase in a system; (b) adding a predetermined amount of a dispersed phase to the system; (c) providing low shear means to mix the continuous phase and dispersed phase to form an intermediate emulsion; (d) incrementally adding additional amounts of the dispersed phase to the intermediate emulsion while shearing; (e) maintaining the amounts of continuous phase and dispersed phase in the system by continuously adding additional amounts of each to the system; and (f) taking out the formed high internal phase silicone in aqueous emulsion from the system. COPYRIGHT: (C)2006,JPO&NCIPI |
