DEG content in PET chip varied greatly when adding TiO-2 separately to paste mixing vessel or esterification reactor. As long as adding 20% of TiO-2 total output in the paste mixing vessel, DEG content in PET chip will decreased below 1.1%.

• TiO2 在浆料槽或酯化釜两处分别投料 ,切片中二甘醇含量差别很大 ,只要在浆料配制槽中加入TiO2 总量的 2 0%25 ,切片中二甘醇的质量分数就可降至 1 1%25以下。