| abstract |
A polyester resin which can solve all problems such as crystallization rate, reaction rate, acetaldehyde generation, intrinsic viscosity suitable for container molding and yellowing phenomenon in the solid phase polymerization, while being harmless to the environment and being environment friendly by using environmentally friendly catalysts other than antimony metal A composition for manufacture is disclosed. The present invention relates to a composition wherein the molar ratio of the diol compound to the dicarboxylic acid compound is 1.05 to 1.4, and the composition comprises 5 to 50 ppm of phosphorus compound (based on the amount of P element), 10 to 40 ppm of cobalt compound ), A color improving agent in an amount of 0.2 to 20 ppm, a polymerization reaction type nucleating agent in an amount of 10 to 100 ppm, and a titanium-germanium complex catalyst compound in an amount of 5 to 25/3 to 30 ppm (based on a Ti / Ge element amount) (ASTM evaluation method D3418) of less than 160 占 폚 and an intrinsic viscosity (IV) of from 0.74 to 0.9 dl / g and a color coordinate value b of 0.0 or less, a crystallization exothermic peak temperature (Tch) g. < / RTI > |