| 摘要 |
<p>A process for the synthesis of polysiloxane emulsions comprises the steps of (a) preheating an aqueous reaction medium (A), optionally containing one or more surfactants, to a temperature of about 30 DEG C to about 110 DEG C; and (b) semi-continuously adding to the aqueous reaction medium (A), an aqueous reaction mixture (B) comprising a siloxane precursor, and an acid catalyst-surfactant to form a polysiloxane emulsion comprising essentially mono-modal particles having a pre-determined particle size in the range of about 50 nm to about 2 microns. The process yields mono modal polysiloxane emulsions, providing control over the particle size and dispersity.</p> |
