Patent ID: 7619010

Claim:
A batchwise process for the preparation of aqueous emulsions of organosilicon compounds having a targeted organosilicon compound content, comprising: a) establishing a fluid circulation loop having a directional flow and containing a stirred fluid reservoir, at least one high shear mixer, and at least one pump positioned between the stirred fluid reservoir and the high shear mixer(s), and following the high shear mixer(s) in the direction of flow; b) introducing an aqueous phase containing an emulsifier into said fluid reservoir; c) circulating a portion of the aqueous phase and an emulsifier in the circulation loop; d) adding one or more organosilicon compounds to said aqueous phase and circulating within said circulation loop to form a stiff phase preemulsion; e) diluting said stiff phase preemulsion with additional aqueous phase added prior to said high shear mixer, and e) withdrawing an aqueous emulsion product with said targeted organosilicon compound content, wherein temperature and pressure in the circulation loop is monitored and adjusted to target temperature and pressure, wherein the temperature of the aqueous phase is regulated to a target temperature by at least one of regulating the temperature of raw material supplied to the fluid reservoir, regulating the temperature of raw materials introduced directly into the high shear mixer, regulating the speed of the high shear mixer, and regulating the circulation rate of the pump located following the high shear mixer and between the high shear mixer and the fluid reservoir, and wherein pressure on the inlet and outlet sides of the high shear mixer is regulated by at least one of adjusting the speed of the mixer and adjusting a circulation rate by means of the pump, wherein the high shear mixer is a rotor stator mixer.