| 摘要 |
PROBLEM TO BE SOLVED: To provide an organopolysiloxane emulsion having good stability, and to provide a method for producing the organopolysiloxane emulsion, in which an equilibrium reaction time is short. SOLUTION: This organopolysiloxane emulsion is produced by subjecting a polysiloxane mixture to emulsion polymerization, wherein the polysiloxane mixture contains (A) a cyclic organopolysiloxane, (B) a diorganopolysiloxane of which the both terminals are sealed by hydroxyl groups, and (C) a diorganopolysiloxane of which the both terminals are sealed by trialkylsiloxy groups, and further the mixture has a mass ratio of the component (A) to the component (B) satisfying: (A)/(B)=10/90 to 80/20, an amount of the component (C) mixed thereinto of 0.05-5 pts. by mass based on 100 pts. by mass of a total amount of the components (A) and (B), and a viscosity at 25°C of≤50 mm<SP>2</SP>/s. The method for producing the organopolysiloxane emulsion comprises emulsifying and dispersing the polysiloxane mixture in (E) water to which (D) a surfactant is added, and then polymerizing the polysiloxane mixture in the emulsion in the presence of an acidic or alkaline catalyst. COPYRIGHT: (C)2006,JPO&NCIPI
|
