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    • 3. 发明申请
    • METHOD FOR PREPARING A POLYESTER RESIN IN WHICH ISOSORBIDE IS COPOLYMERIZED
    • 用于制备异氰酸酯共聚的聚酯树脂的方法
    • US20110251342A1
    • 2011-10-13
    • US13140452
    • 2009-12-09
    • Kyu Tae ParkJong Ryang Kim
    • Kyu Tae ParkJong Ryang Kim
    • C08K5/52C08G63/85
    • C08G63/672C08G63/85C08G63/87
    • The present invention relates to a method for preparing a polyester resin in which isosorbide is copolymerized, and more particularly, to a method for preparing a copolymerized polyester resin containing isosorbide, comprising the steps of: adding glycols containing ethylene glycol and isosorbide to terephthalic acid or dimethyl terephthalate such that the feed molar ratio of total glycols to terephthalic acid or dimethyl terephthalate is 1.05 to 3.0 to allow an esterification reaction; and polycondensing the esterification product using titanium-based compounds of copolymers of titanium dioxide and silicon dioxide, and copolymers of titanium dioxide and zirconium dioxide, as a copolymerization catalyst, and using phosphorous compounds as a stabilizer. The copolymerized polyester resin containing isosorbide prepared according to the present invention exhibits superior reactive properties and productivity, and reduces the quantity of metal used as a catalyst and improves the clarity of a polymer. Further, a high molecular weight copolymerized polyester resin can be prepared using a small amount of catalyst.
    • 本发明涉及一种制备其中异山梨醇共聚的聚酯树脂的方法,更具体地说,涉及含有异山梨醇的共聚聚酯树脂的制备方法,包括以下步骤:将含有乙二醇和异山梨醇的二醇加入对苯二甲酸或 使二醇与对苯二甲酸或对苯二甲酸二甲酯的进料摩尔比为1.05〜3.0,进行酯化反应; 并使用二氧化钛和二氧化硅的共聚物的钛基化合物,二氧化钛和二氧化锆的共聚物作为共聚催化剂,并使用磷化合物作为稳定剂,使酯化产物缩聚。 含有根据本发明制备的异山梨醇的共聚聚酯树脂表现出优异的反应性能和生产率,并且减少了用作催化剂的金属的用量并提高了聚合物的透明度。 此外,可以使用少量的催化剂制备高分子量共聚聚酯树脂。