Patent ID: 7470634

Claim:
A siloxane-based resin prepared by polycondensing At least one polyhedral molecular silsesquioxane represented by Formula 2 below: [SiO 1.5 ] n —(R) n (2) wherein the substituents R may be the same or different from one another, and are each independently a hydrogen atom, a halogen atom, a hydroxyl group, or a C 1˜20 alkyl, alkenyl, alkynyl, aryl or alkoxy group, or —OSir 1 r 2 r 3 (in which r 1 , r 2 and r 3 are each independently a hydrogen atom, a halogen atom, or a C 1˜20 alkyl, alkenyl, alkynyl, aryl or alkoxy group), at least one of the substituents R being a hydrolysable functional group; and n is 10, 12, 14, or 16, alone, or a mixture of the polyhedral molecular silsesquioxane and at least one silane-based monomer selected from the group consisting of compounds represented by Formulae 3 to 5 below: wherein R 1 is a hydrogen atom, a C 1˜3 alkyl group, or a C 6˜15 aryl group; R 2 is a hydrogen atom, a C 1˜10 alkyl group, or SiX 1 X 2 X 3 (in which X 1 , X 2 and X 3 are each independently a hydrogen atom, a C 1˜3 alkyl group, a C 1˜10 alkoxy group, or a halogen atom, at least one of these substituents being a hydrolysable functional group); and p is an integer between 3 and 8; wherein R 1 is a hydrogen atom, a C 1˜3 alkyl group, or a C 6˜15 aryl group; X 1 , X 2 and X 3 are each independently a hydrogen atom, a C 1˜3 alkyl group, a C 1˜10 alkoxy group, or a halogen atom, at least one of these substituents being a hydrolysable functional group; m is an integer of 0 to 10; and p is an integer of 3 to 8; and X 3 X 2 X 1 Si-M-SiX 1 X 2 X 3 (5) wherein X 1 , X 2 and X 3 are each independently a hydrogen atom, a C 1˜3 alkyl group, a C 1˜10 alkoxy group, or a halogen atom, at least one of these substituents being a hydrolysable functional group; and M is a single bond, a C 1˜10 alkylene group, or a C 6˜15 arylene group, in an organic solvent in the presence of water and an acid or base catalyst.