IMPACT MODIFIER FOR POLYMETHYLMETACRYLATE RESIN HAVING EXCELLENT IMPACT STRENGTH AND TRANSPARENCY AND METHOD OF PREPARING THE SAME

摘要

PURPOSE: An impact reinforcing agent for a polymethylmethacrylate resin is provided to improve impact reinforcing strength without degrading transparency of a polymethylmethacrylate resin composition. CONSTITUTION: An impact reinforcing agent for a polymethylmethacrylate resin comprises: a seed formed by polymerizing a monomer mixture which comprises methylmethacrylate; a rubber core surrounding the seed and formed by polymerizing a monomer mixture which comprises alkyl acrylate, an aromatic vinyl compound, a crosslinkable monomer and a polyethylene glycol-based comonomer; and a shell formed by mixing a mixture which comprises one or more compounds selected from methylmethacrylate, alkyl acrylate and an aromatic vinyl compound.