聚2,6-萘二甲酸乙二酯的合成及固相聚合

SYNTHESIS AND SOLID STATE POLYMERIZATION OF POLY(ETHYLENE 2,6\|NAPHTHALATE)

采用生产 PET的工艺路线和设备生产聚 2 ,6 -萘二甲酸乙二酯 ( PEN)。讨论了酯化反应 ,熔融聚合 ,固相聚合阶段的工艺条件。通过固相聚合后 ,PEN切片的特性粘数可由熔融聚合的 0 .5 d L/g提高到 0 .7d L

The process routine and plant for PET were applied in poly(ethylene 2,6\|naphthalate) (PEN) production. The process conditions in the stages of esterification, melt polymerization and solid state polymerization were discussed. The intrinsic viscosity of PEN chip subjected to solid state polymerization increased from 0 5 dL/g in the stage of melt polymerization to more than 0 7 dL/g.