Patent ID: 6908977

Claim:
A siloxane-based resin prepared by hydrolyzing and polycondensing monomers (a), (b) and (c) in an organic solvent in the presence of a catalyst and water, wherein monomer (a) is a cyclic siloxane compound of formula (1), monomer (b) is a silane compound of formula (2), and monomer (c) is a silane compound of formula (3): [in which, R is hydrogen atom, C 1-3 alkyl group, C 3-10 cycloalkyl group or C 6-15 aryl group; each of X 1 , X 2 and X 3 , independently, is hydrogen atom, C 1-3 alkyl group, C 1-10 alkoxy group or halogen group, provided that at least one of them is C 1-10 alkoxy group or halogen group; m is an integer from 1 to 10; and n is an integer from 3 to 8]; R′SiX 1 X 2 X 3 Formula (2) [in which, R′ is hydrogen atom, C 1-3 alkyl group, C 3-10 cycloalkyl group or C 6-15 aryl group; and each of X 1 , X 2 and X 3 , independently, is C 1-10 alkoxy group or halogen group]; and R″SiX 1 X 2 X 3 Formula (3) [in which, R″ is C 1-3 alkyl or aryl group including fluoro, phenyl or cyano substituent; and each of X 1 , X 2 and X 3 , independently, is C 1-10 alkoxy group or halogen group].