PURPOSE: To obtain a condensate having improved chemical property such as resistance to acid, thermal property such as resistance to heat and mechanical property by, after reacting a specific metal derivative with respective specific functionalized silanes, cross-linking the liquid precursor thus produced.
CONSTITUTION: This objective polycondensate of formula II [(v) is 4-48; (w) is 5-52; (x) is 5-48; (y) is 2-16; (z) is 1; but (v)/((y)+(z))≤7; CvHw is a carbon chain supported by Si] is obtained by first reacting a metal derivative (e.g. titanium hydroxide) of formula MeRx (Me is metal of the group IVA, VA or the like; R is a hydrolyzable group such as halogen, alkoxy or the like; (x) is a valency with Me) with a functionalized silane (e.g. trichlorovinyl silane) of formula I (R' is an alkoxy, hydroxy or the like; R" is a cyclic or aromatic hydrocarbon chain; Y is an epoxy or vinyl or the like; (n) is ≤4) to obtain a liquid precursor having a polymerizable functional group supported by the carbon chain of Si and then, cross-linking the liquid precursor by heating and/or UV-irradiation.
SOFUI KOMINOTSUTEI
JIYATSUKU JIRO
