Patent ID: 7057002

Claim:
A siloxane-based resin prepared by hydrolyzing and polycondensing a first monomer of the Formula 1 and a second monomer of the Formula 2 in an organic solvent in the presence of an acid or alkaline catalyst and water: wherein, R 1 is a hydrogen atom, a C 1-3 alkyl group or a C 6-15 aryl group; each of X 1 , X 2 and X 3 , independently, is a C 1-3 alkyl group, a C 1-10 alkoxy group or a halogen atom, provided that at least one of them is hydrolysable; m is an integer from 0 to 10; and p is an integer from 3 to 8, and ( R 2 ) 4-a Ge( X 4 ) a Formula 2 wherein, R 2 is a hydrogen atom, a C 1-3 alkyl group, or a C 6-15 aryl group; X 4 is a C 1-10 alkoxy group or a halogen atom; and a is an integer of 1–3.