| 摘要 |
<p>A polymethylsilsesquioxane powder according to the present invention is characterized by being surface treated with an organic silicon compound represented by the following general formula: (R3Si)aZ wherein R represents a non-substituted monovalent hydrocarbon group, a a numeral of 1 or 2, and Z a hydrogen atom, a halogen atom, a hydroxyl group, -OR min , -NR min X, -ONR min 2 or - OOCR min when a is 1, while -O-, -N(X) or -S- when a is 2, wherein R min represents an alkyl group having 1 to 4 carbon atoms, and X a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.</p> |
