Stannous oxalate: An efficient catalyst for poly(trimethylene terephthalate) synthesis  

作　　者：JIA ShuYong REN YuRong ZHANG Dan HU Jing ZENG Yi WANG GongYing 

机构地区：[1]Chengdu Institute of Organic Chemistry,Chinese Academy of Sciences,Chengdu 610041,China [2]College of Chemistry,Jilin Normal University,Siping 136000,China [3]Changzhou Institute of Chemistry,Changzhou 213164,China [4]Graduate University of Chinese Academy of Sciences,Beijing 100039,China

出　　处：《Science China Chemistry》2008年第3期257-262,共6页中国科学（化学英文版）

基　　金：Supported by the National High Technology Research and Development Program of China 863 Plan (Grant No. 2003AA321010); the Innovation Research Fund of Graduate University, Chinese Academy of Sciences (2006)

摘　　要：A complete study on the catalytic activity of stannous oxalate for poly(trimethylene terephthalate) (PTT) synthesis via esterification method is carried out by comparison to the well known catalysts (tetrabutyl titanate (TBT), dibutyltin oxide (Bu2SnO), and stannous octoate (SOC)). Their catalytic activity in the esterification process is monitored by measuring the amount of water generated, while intrinsic viscosity (IV) and content of terminal carboxyl groups (CTCG) are used as the index in the polycondensation process. Stannous oxalate shows higher activity than the other catalysts. Decrease in reaction time and improvements in PTT property are observed. The higher catalytic activity of stannous oxalate is attributed to its chelate molecular structure.A complete study on the catalytic activity of stannous oxalate for poly(trimethylene terephthalate) (PTT) synthesis via esterification method is carried out by comparison to the well known catalysts (tetrabutyl titanate (TBT), dibutyltin oxide (Bu2SnO), and stannous octoate (SOC)). Their catalytic activity in the esterification process is monitored by measuring the amount of water generated, while intrinsic viscosity (IV) and content of terminal carboxyl groups (CTCG) are used as the index in the polycondensation process. Stannous oxalate shows higher activity than the other catalysts. Decrease in reaction time and improvements in PTT property are observed. The higher catalytic activity of stannous oxalate is attributed to its chelate molecular structure.

关 键 词：stannous OXALATE poly(trimethylene terephthalate) 1 3-propanediol ESTERIFICATION method 

分 类 号：O631.5[理学—高分子化学]