期刊
TETRAHEDRON LETTERS
卷 54, 期 10, 页码 1239-1242出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2012.12.098
关键词
Zirconium; Catalyst; Polycondensation; Copolyesters; Copolymerization
In this Letter, we report the employment of zirconium-aminoethanol as a novel catalyst for the synthesis of copolyesters. The Zr(IV) complex (Cl)(2)Zr((OCH2CH2NRR2)-R-1)(2) was prepared by the direct reaction of ZrCl4 with aminoethanol in CH2Cl2. The zirconium catalysts 1a-c were produced in high yields from aminoethanol by using a one-step procedure. The efficiency of zirconium catalyst can be harnessed for the large scale synthesis of poly(ethylene terephthalate-co-isophthalate) copolyesters in a 20L pilot plant. From this study, catalyst 1a was shown to be the most effective catalyst for the polycondensation. When this catalyst was used in the subsequent steps, copolyesters with the excellent intrinsic viscosity and physical properties were received. (C) 2012 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据