公开(公告)号：EP1435354A1

公开(公告)日：2004-07-07

申请号：EP02800787.0

申请日：2002-10-08

申请人： Nippon Shokubai Co., Ltd.

发明人： ITO, Rie ,  SASAKI, Masamitsu ,  SHIROSHIMA, Masahiro ,  KAKIMOTO, Yukihiko ,  MATSUMOTO, Koji

IPC分类号： C07D307/60 ,  C08G63/78

CPC分类号： C07D307/60 ,  C08G63/16

摘要： An object of the present invention is to provide: succinic anhydride that little becomes colored in a melted state; a production process for such succinic anhydride; and a production process for a polyester, by which there can be obtained a polyester of an extremely reduced color. As means of achieving such an object, the succinic anhydride is characterized by having a γ-butyrolactone content of not more than 800 ppm and a dilactone content of not more than 500 ppm. The production process for the succinic anhydride is characterized in that: the hydrogenation reaction is carried out in the presence of a catalyst in the temperature range of 120 to 160 °C under a hydrogen pressure of 0.1 to 2.0 MPa; and the distillation is carried out in such a manner that the bottom temperature will be within the temperature range of 125 to 200 °C by reducing the pressure. The production process for the polyester is characterized in that the aforementioned succinic anhydride is used as an acid component.

摘要翻译： 本发明的目的是提供：在熔融状态下几乎不着色的琥珀酸酐; 这种琥珀酸酐的生产方法; 以及聚酯的制造方法，通过该方法可以获得极度降低的颜色的聚酯。 作为实现这一目的的手段，琥珀酸酐的特征在于γ-丁内酯含量不超过800ppm，二烯内酯含量不大于500ppm。 琥珀酸酐的制造方法的特征在于：氢化反应在催化剂存在下，在120〜160℃，氢压为0.1〜2.0MPa的条件下进行; 通过降低压力使底部温度在125〜200℃的温度范围内进行蒸馏。 聚酯的制造方法的特征在于使用上述琥珀酸酐作为酸成分。