BLEND OF POLYESTER WITH POLYCARBONATE HAVING SUPERIOR THERMAL STABILITY AND COLOR STABILITY

摘要

PURPOSE: Polyester/polycarbonate blend is provided to have color-b of 4 or less, thereby having excellent color stability(transparency) and thermal stability(thermal resistance), and to be economic by including polyethylene terephthalate. CONSTITUTION: Polyester/polycarbonate blend comprises: poly(ethylene terephthalate-co-1,4-cyclohexylene dimethylene terephthalate) in which 1,4-cyclohexanedimethanol is copolymerized; polyethylene terephthalate; polycarbonate; and germanium. The whole polyester/polycarbonate blend comprises 50-90 weight% of ethylene terephthalate-co-1,4-cyclohexylene dimethylene terephthalate and polyethylene terephthalate, the content of the polyethylene terephthalate is 1-6 times to the poly(ethylene terephthalate-co-1,4-cyclohexylene dimethylene terephthalate), and the content of the polycarbonate is 10-50 weight%.