Patent ID: 6506818
Filing Date: 2003-01-14
Classification: C08J,C08K

Abstract:
A polyester resin composition comprising, on the basis of about 100 parts by weight of polyester resin, about 0.01 to 5 parts by weight of aluminum silicate particles having an average particle diameter of about 0.01 to 2.0 &mgr;m, said aluminum silicate particles consisting essentially of aluminum, silica, and alkali metal ions, with the mole ratio of silica to aluminum in the range from about 0.25 to 10, and the mole ratio of aluminum to alkali metal ions in the range from about 1.0 to 2.0, said aluminum silicate particles having a core-shell structure formed from grain growth using a seed grain as a nucleus, said core-shell structure having a weight ratio of core to shell in the range from about 0.25 to 10.