Patent ID: 8252867
Filing Date: 2012-08-28
Classification: C08F,C08L,Y10T

Abstract:
1. A thermoplastic polyester resin composition having excellent transparency and impact strength, which contains 50-95 weight % of a thermoplastic polyester resin and 5-50 weight % of an impact strength modifier for a thermoplastic polyester resin, wherein the impact strength modifier is prepared by graft-polymerization of: a) 20-80 weight % of multilayered rubber latex in which the ratio of particle diameter (P the thermoplastic polyester resin is characterized in that the difference of refraction index between the thermoplastic polyester resin and the impact strength modifier for a thermoplastic polyester resin is up to 0.005; the multilayered rubber latex of the impact strength modifier comprises a conjugated diene monomer, an ethylene unsaturated aromatic compound and a cross-linking agent; the conjugated diene monomer is one or more compounds selected from the group consisting of butadiene, isoprene and chloroisoprene and is used in an amount ranging from 50 to 60 weight % of the multilayered rubber latex; and the ethylene unsaturated aromatic compound is used in an amount ranging from 39 to 49 weight % of the multilayered rubber latex.