The characteristics and classification of the spheric microparticles of silicone resin were introduced,and the five types preparations of the polymethylsilsesquioxane spheric microparticles of silicone resin by trimethoxymethylsilane were introduced too.

The heat resistant coatings(PRSI) is prepared with the self-made trapezoid polymethylsilsesquioxane and polyphenylsilsesquioxane as the binders.

Synthesis of polymethylsesquisiloxane;