Patent ID: 8563089

Claim:
A method for preparing a functional reinforcing filler, comprising: preparing an alkenylsilanol solution by hydrolyzing an alkenylalkoxysilane compound represented by Chemical Formula 1; preparing a suspension by mixing the alkenylsilanol solution with inorganic particles in one or more solvent selected from alcohol and water; preparing molecular film coated inorganic particles by removing the solvent from the suspension through evaporation; and heating the molecular film coated inorganic particles to induce dehydration condensation: R—SiX 1 X 2 X 3 (1) wherein R is C 2 -C 18 alkenyl or C 5 -C 18 cycloalkenyl, and each of X 1 , X 2 and X 3 , which are the same or different, is C 1 -C 18 alkyl, C 1 -C 18 alkoxy, C 6 -C 18 aryl or C 6 -C 18 aromatic alkoxy, with the proviso that at least one of X 1 , X 2 and X 3 is C 1 -C 18 alkoxy or C 6 -C 18 aromatic alkoxy.