Abstract: The present invention relates to a polyester molded body and a method for manufacturing the same, the polyester molded body including polyester obtained by polymerization in the presence of an inorganic tin compound catalyst, wherein the polyester molded body containing an inorganic tin compound of the present invention may overcome problems caused by a residual antimony-based catalyst, and may be used as an eco-friendly container which does not affect taste and aroma when used as a food storage container due to reduced amounts of acetaldehyde and formaldehyde and which is not toxic to the human body.

Abstract: The present invention relates to polyester yarn containing polyester obtained by polymerization in the presence of an inorganic tin compound catalyst, and a method for manufacturing the polyester yarn, wherein the polyester yarn of the present invention which contains an inorganic tin compound may overcome problems caused by a residual antimony catalyst and may have excellent warping properties.

Abstract: A polyethylene terephthalate bulked continuous filament is manufactured by steps of melt-spinning, multi-step stretching a polyethylene terephthalate chip and a master batch chip for coloring, passing through a texturing nozzle, cooling, and winding and has an elastic modulus of 1.00E+07 to 5.00E+09Pa at a temperature range of 10° C. to 200° C., the filament being manufactured by steps of melt-spinning a polyethylene terephthalate chip and a master batch chip for coloring, multi-step stretching, passing through a texturing nozzle, cooling, and winding.

Abstract: A polyethylene terephthalate bulked continuous filament is manufactured by steps of melt-spinning, multi-step stretching a polyethylene terephthalate chip and a master batch chip for coloring, passing through a texturing nozzle, cooling, and winding and has an elastic modulus of 1.00E+07 to 5.00E+09 Pa at a temperature range of 10° C. to 200° C., the filament being manufactured by steps of melt-spinning a polyethylene terephthalate chip and a master batch chip for coloring, multi-step stretching, passing through a texturing nozzle, cooling, and winding.

Abstract: Disclosed are a polymerization catalyst for the production of polyester, which includes an inorganic stannous (tin (II)) compound, and a method of producing polyester using the same. The polymerization catalyst for the production of polyester is safe without toxicity, has equal or higher catalytic activity compared to an antimony-based catalyst, may increase the polymerization reaction rate, may ensure a high viscosity level even when used in small amounts, may reduce the production of acetaldehyde, and may also improve the thermal stability and color of the polymer compared to those of a polyester polymer obtained by the related art.

Abstract: A polyethylene terephthalate bulked continuous filament is manufactured by steps of melt-spinning, multi-step stretching a polyethylene terephthalate chip and a master batch chip for coloring, passing through a texturing nozzle, cooling, and winding and has an elastic modulus of 1.00E+07 to 5.00E+09 Pa at a temperature range of 10° C. to 200° C.

Abstract: The present invention relates to a method for producing a polyethylene terephthalate polymer having improved abrasion resistance by introducing an inorganic particle (metal) in addition to ethylene glycol (EG, Ethyleneglycol) and terephthalic acid (TPA, terephthalic acid) forming a conventional polyethylene terephthalate bond, and a yarn and a car mat produced by using the polyethylene terephthalate polymer produced by the above-mentioned production method. When the yarn and the car mat are produced by using the above-mentioned polyethylene terephthalate polymer, the density of the yarn is improved and the abrasion resistance of the car mat can be improved.