Patent ID: 8841385
Filing Date: 2014-09-23
Classification: C08F,C08J,Y10S,Y10T

Abstract:
1. A method of preparing polymer particles comprising the following steps: (a) loading a reaction solvent, monodisperse polymer particles having a mean diameter of 1-15 μm, and a chelating ligand in a reactor and regulating a temperature in the reactor to 50-80° C.; (b) reacting the surfaces of the monodisperse particles with an anion polymerization initiator; (c) grafting a brush onto the surfaces of the monodisperse polymer particles by anionic graft polymerization of a conjugated diene-based monomer; and (d) terminating the anionic graft polymerization with a polymerization terminator to obtain the polymer particles, wherein an additional step of eliminating a non-reacted anion polymerization initiator remaining in the reactor, is included between step (b) and step (c), and wherein the polymer particles have an impact strength ranging from about 361 kg/mm