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61. 发明申请

US20130267674A1 POLYESTER RESIN 审中-公开
标题翻译：聚酯树脂
公开(公告)号：US20130267674A1
公开(公告)日：2013-10-10
申请号：US13885482
申请日：2011-11-15
申请人： Toshiyuki Kita , Kunihiro Maeda , Keiichiro Togawa
发明人： Toshiyuki Kita , Kunihiro Maeda , Keiichiro Togawa
IPC分类号： C08G63/84
CPC分类号： C08G63/84 , C08G63/87
摘要： The present invention provides a polyester resin obtained by using an aluminum compound and a phosphorus compound as a polymerization catalyst, containing greater than or equal to 85% by mol of an ethylene terephthalate structural unit, wherein the content of an aluminum-based contaminant with respect to the mass of the polyester resin is less than or equal to 100 ppb, and the content of a phosphorus compound represented by a specific structure is 5 to 11 ppm. The present invention is able to provide a polyester resin capable of keeping high transparency of the molded body when it is sequentially polymerized and produced on a commercial scale, and having such characteristics that crystallization of a mouth plug part can be easily controlled when it is used for a heat resistant bottle, and whitening is less likely to occur at the time of heating in molding when it is used as a sheet for molding.
摘要翻译：本发明提供一种通过使用铝化合物和磷化合物作为聚合催化剂获得的聚酯树脂，其含有大于或等于85摩尔％的对苯二甲酸乙二醇酯结构单元，其中铝基污染物的含量相对于相对于聚酯树脂的质量小于或等于100ppb，由特定结构表示的磷化合物的含量为5〜11ppm。本发明能够提供一种在商业规模顺序地聚合和制造时能够保持成型体的高透明度的聚酯树脂，并且具有这样的特征，即当使用时可以容易地控制口塞部件的结晶对于耐热瓶子，当成型时用于加热成型时，加热时不易发生白化。