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In order to obtain excellently heatresistant and transparent polymer materials, the fully aromatic polysilarylenesiloxanes were synthesized via the solution polymerization and the meltcondensation from the corresponding disilanol monomer. And the thermal properties of these polymers were investigated by using DSC and TGA. The polymer synthesized via the solution polymerization showed good solubility in various organic solvents, and 116oC of glass transition temperature, g, and 529oC of 5% weight loss temperature, d5. On the other hand, the product obtained by the meltcondensation polymerization partially dissolved in organic solvent, and showed 93oC of g. Polyaryleneoxysiloxane was also prepared from 4,4’dihydroxytetraphenylmethane and dichlorodiphenylsilane, and showed 137oC of g, while polyaryleneoxysiloxane was easily hydrolyzed in homogeneous solution containing a base etc.

Syntheses and Properties of Silicon-containing, Soluble and Fully Aromatic Polymers