Process For Preparing Silicone Emulsions

摘要

The present disclosure provides a process for preparing silicone emulsions via suspension polymerization techniques that are faster and/or provide higher molecular weight organopolysiloxanes than conventional techniques. The process involves combining a) an emulsifier, b) a silanol functional organopolysiloxane, c) a polymerization catalyst, and water to form a mixture, shearing the mixture to form an emulsion having a dispersed phase of the organopolysiloxane, reacting the emulsion in a closed system having a pressure greater than 1 MPa to polymerize the organopolysiloxane.

主权项

1. A process for producing a silicone emulsion comprising the steps of:
I) combining;
a) an emulsifier,b) a silanol functional organopolysiloxane,c) a polymerization catalyst,
and water to form a mixture, II) shearing the mixture to form an emulsion having a dispersed phase of the organopolysiloxane, III) reacting the emulsion of step II) in a closed system having a pressure greater than 1 MPa to polymerize the organopolysiloxane.