An ethylene terephthalate type polyester resin for forming containers, having an intrinsic viscosity in a range of 0.80 to 0.90 dL/g, containing copolymerizable components other than the ethylene glycol and terephthalic acid in an amount of less than 1.5 mol%, containing monohydroxyethyl terephthalate and bishydroxyethyl terephthalate in a total amount of less than 0.005% by weight, and having a heat of fusion of not more than 50 J/g and a crystallinity of less than 60%. The ethylene terephthalate type polyester resin has a high intrinsic viscosity, excellent stretch formability and excellent melting property.
一种用于形成容器的
对苯二甲酸乙二醇酯型聚酯
树脂,其固有粘度范围为 0.80 至 0.90 dL/g,含有除
乙二醇和
对苯二甲酸以外的可共聚组分,其含量小于 1.5 mol%,
对苯二甲酸单羟乙基酯和
对苯二甲酸双羟乙基酯的总含量小于 0.005%(按重量计),熔融热不大于 50 J/g,结晶度小于 60%。
对苯二甲酸乙二醇酯类聚酯
树脂具有较高的固有粘度、优异的拉伸成型性和熔融性。