| 摘要 |
PURPOSE: Provided is poly aliphatic aromatic silsesquioxane, which is soluble in organic solvents and excellent in heat-resistance, combustion-resistance, and flexibility and can be used as a heatproof coating agent, an optical fiber protection coating agent, an adhesive, a release paper, a protection film of semiconductor, resist material, etc. CONSTITUTION: The high regular poly aliphatic aromatic silsesquioxane (formula 1) is produced by condensing 1,3-organodisiloxane (formula 2) solution in an organic solvent at a temperature of 50-350deg.C in the presence of a catalyst selected from the consisting of an alkali metal hydroxide, an amine, a quaternary ammonium salt, and a fluoride. In the formula, one of R1 and R2 is unsubstituted or substituted monovalent aliphatic hydrocarbon and the other is unsubstituted or substituted monovalent aromatic hydrocarbon, X is H, Cl, OH, NH2, or COOH, R is H, alkyl, acetate, or an alkali metal.
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