Patent ID: 7271236
Filing Date: 2007-09-18
Classification: C08G,C08J,C08L,G03G,Y02W,Y10T

Abstract:
1. A preparation method of a polyester resin, the method comprising: under predetermined depolymerization conditions, mixing a polyester resin, a resin dissolvent and a polycondensation catalyst to depolymerize the polyester resin to form a first reaction mixture; adding a first monomer to the first reaction mixture to form a second reaction mixture; under predetermined polymerization conditions, adding a second monomer to the second reaction mixture to polymerize the depolymerized polyester resin with the first and second monomers and form a polymerized reaction product; and adding a neutralizing agent to neutralize the polymerized reaction product wherein the obtained polyester resin has particles with a predetermined volume average particle diameter that is less than 1 μm.