Polyborodiphenylsiloxanes
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorHiroshi Kobayashi
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Abstract
A polyborodiphenylsiloxane having main repeating units of the formula, ##STR1## wherein X is a hydrogen atom or ##STR2## and a weight-average molecular weight of about 800 to about 5,000, and a method of preparing the same, which comprises polycondensing a borodiphenylsiloxanol of the formula, ##STR3## wherein n is zero or one, at a temperature of from about 140.degree. C. to about 400.degree. C. in the absence of a solvent.
Claims7
A polyborodiphenylsiloxane having main repeating units of the formula, ##STR10## wherein X is a hydrogen atom or ##STR11## and a weight-average molecular weight of about 800 to about 5,000.
Dependencies are inferred from the claim text.