Method for manufacturing polysilsesquioxane by using carbon dioxide solvent and polysilsesquioxane manufactured using the same

摘要

Disclosed is a method for manufacturing the polysilsesquioxane (PSSQ) within the carbon dioxide solvent through the control of the pressure and temperature within a reactor by the state changes, e.g., a liquid state or supercritical state, of carbon dioxide as a solvent which is environmentally friendly and pollution-free, that is to say, by making use of the fact that the solubility of reactant and product is changed according to the pressure and temperature in manufacturing the polysilsesquioxane (PSSQ).

主权项

1. A method for manufacturing polysilsesquioxane (PSSQ), the method comprising:
(i) preparing a silane compound; (ii) preparing a carbon dioxide solvent; (iii) injecting the silane compound into a reactor; (iv) increasing a pressure and temperature within the reactor, and changing a state of the carbon dioxide solvent into a liquid state or a supercritical state by injecting the carbon dioxide solvent into the reactor, wherein the pressure and temperature are increased from 1,000 to 5,000 psi and from 30 to 80° C., respectively; (v) supplying water and a catalyst to the reactor; (vi) inducing hydrolysis and a condensation reaction by increasing the temperature within the reactor; (vii) precipitating a polysilsesquioxane (PSSQ) product substituted with a functional group by controlling the temperature and pressure within the reactor; and (viii) separating the silane compound of an unreacted material within the reactor from the polysilsesquioxane (PSSQ) of a product.