Ethylene glycol aluminum as a novel catalyst for the synthesis of poly(ethylene terephthalate)  

作　　者：Bin Xiao 

机构地区：[1]Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China [2]Changzhou Key Laboratory of Green Chemistry and Technology, Changzhou Institute of Chemistry, Changzhou 213164, China [3]Graduate School of Chinese Academy of Sciences, Beijing 100039, China

出　　处：《Chinese Chemical Letters》2011年第6期741-744,共4页中国化学快报（英文版）

摘　　要：Ethylene glycol aluminum was prepared efficiently and characterized by FT-IR and NMR.It exhibited higher catalytic activity and had profitable effect than titanium glycolate and ethylene glycol antimony for the synthesis of poly（ethylene terephthalate） （PET）.It was only used as polycondensation catalyst because it was sensitive to water.For this catalyst,the degree of esterification of the theoretical amount of water was produced up to 95%at 260℃,while the intrinsic viscosity and content of terminal carboxyl groups of the corresponding PET polyester,polymerized at 280℃,70 Pa for 39 min,was 0.87 dL/g and 23.0μmol/g,respectively. Ethylene glycol aluminum was a promising catalyst for the synthesis of PET polyester.Ethylene glycol aluminum was prepared efficiently and characterized by FT-IR and NMR.It exhibited higher catalytic activity and had profitable effect than titanium glycolate and ethylene glycol antimony for the synthesis of poly（ethylene terephthalate） （PET）.It was only used as polycondensation catalyst because it was sensitive to water.For this catalyst,the degree of esterification of the theoretical amount of water was produced up to 95%at 260℃,while the intrinsic viscosity and content of terminal carboxyl groups of the corresponding PET polyester,polymerized at 280℃,70 Pa for 39 min,was 0.87 dL/g and 23.0μmol/g,respectively. Ethylene glycol aluminum was a promising catalyst for the synthesis of PET polyester.

关 键 词：Aluminum alkoxide PET POLYCONDENSATION CATALYST Ethylene glycol Terephthalic acid 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业] TQ320.4