Synthesis of Polyester and Copolyester Catalyzed byRare Earth Compounds  

作　　者：Zhang Tianjiao Wang Guihua Wu Rongrui (Polymer ResearchInstitute, Sichuan University,Chengdu 610065 Department ofApplied Chemistry, Beijing University of Chemical Technology, Beijing 100029 Department of Materials and Engineering, Beijing Institute of C 

出　　处：《Journal of Rare Earths》1999年第4期319-319,共1页稀土学报（英文版）

摘　　要：The catalytic effectsof Ln3+ on synthesis of polyethyleneterephthalate and its copolyesterswere studied. The direct esterification reaction of terephthalate acidwith ethylene glycol can be accelerated hy addition of Ln3+, and theLn3+, compound can be acted aspromoter of Sb2O3 in the stage ofpolycondensation. The mechanismof esterification and polycondensation by addition of Ln3+ was discussed. The thermal-stabilities ofpolyethylene terephthalate and itscopolyesters obtained by addihon ofLn3+ were also investigaed.The catalytic effectsof Ln3+ on synthesis of polyethyleneterephthalate and its copolyesterswere studied. The direct esterification reaction of terephthalate acidwith ethylene glycol can be accelerated hy addition of Ln3+, and theLn3+, compound can be acted aspromoter of Sb2O3 in the stage ofpolycondensation. The mechanismof esterification and polycondensation by addition of Ln3+ was discussed. The thermal-stabilities ofpolyethylene terephthalate and itscopolyesters obtained by addihon ofLn3+ were also investigaed.

关 键 词：Rare earths Polyester Catalyst THERMAL-STABILITY 

分 类 号：TQ133.3[化学工程—无机化工]