新型钛系催化剂在直接酯化工艺路线中应用探讨  

TITANIUM COMPOUND CATALYST FORSYNTHESIZING PET IN PTA PROCESS

作　　者：魏高富[1] 

机构地区：[1]江苏仪征化纤股份有限公司研究院

出　　处：《合成技术及应用》1995年第2期6-14,共9页Synthetic Technology & Application

摘　　要：选用特定的含钛化合物作为缩聚催化剂，以ＰＴＡ路线，在２Ｌ釜上进行ＰＥＴ的合成研究，并利用ＤＳＣ、ＴＧＡ、ＧＰＣ等手段对合成的ＰＥＴ进行性能研究．得到催化剂的用量为０．５～０．７／万，酯化时间为５０～５５ｍｉｎ、聚合时间为７０～８０ｍｉｎ．聚酯各项指标均在合格范围之内，与ＳｂＡｃ３催化体系比较．其用量为锑系的１／３，酯化时间缩短２０～３０ｍｉｎ，聚合时间缩短２５ｍｉｎ。Synthesis of PETin PTA process was studied on 2L reactor,using special titanium compound as the polycondensation catalyst.The properties of PET were also studied by meansof DSC.TGA and GPC. The results showed that the catalyst amount is between 50 ～70ppm,esterification time 50～55min,polycondensation time 70～80min.Compared withSbAc3,Ticatalyst amount is one third of SbAc3,its esterification and polycondensation timereduced respeCtively 20～30 and 25min.The properties of PET are excellent.

关 键 词：钛系 催化剂 聚酯纤维 缩聚 工艺 

分 类 号：TQ342.206[化学工程—化纤工业]