| abstract |
The invention provides a method for the preparation of a stable aqueous emulsion of a poly(silsesquioxane) without formation of gelled particles. In the method, a trialkoxysilane compound as the starting material is first emulsified in an aqueous medium containing a cationic surface active agent and a non-ionic surface active agent having a specified HLB value in the range from 16 to 20 in combination followed by the addition of an alkali catalyst and heating to effect hydrolysis and polycondensation of the trialkoxysilane. |