METHOD FOR PRODUCING SPHERICAL POLYSILSESQUIOXANE PARTICLES

The invention relates to a method for producing spherical polysilsequioxane particles, in which, in a first step, trialkoxysilane T, which contains trialkoxysilanes of general formula (I): RSi (OR1) 3 , in which R means a hydrocarbon radical having 1 to 16 carbon atoms, the carbon chain of which can be interrupted by non-adjacent -O- groups and a C1 to C4 alkyl radical, and also contains chlorine compounds, is reacted with acidified water having a pH of at most 6 with mixing to form a hydrolysate; in a second step, the pH of the hydrolysate is adjusted to a value of 1 to 6; in a third step, the hydrolysate is mixed with a solution of a base in water or C1 to C4 alkanol; and in a fourth step, the mixture is left to stand for at least 2 h before the polysilsequioxane particles are isolated. 本发明涉及一种用于制备球形聚倍半硅氧烷颗粒的方法，其中，在第一步中，三烷氧基硅烷T与pH为至多6的酸化水在混合下反应以形成水解产物，三烷氧基硅烷T含有通式(I)：RSi(OR)的三烷氧基硅烷，其中R表示具有1-16个碳原子的烃基，其碳链可被不相邻的-O-基团中断和C-C烷基，并且还含有氯化合物；在第二步中，将水解产物的pH调节到1至6的值；在第三步中，将水解产物与碱在水或C至C烷醇中的溶液混合；和在第四步中，将混合物静置至少2小时，然后分离出聚