Influence of Reaction Conditions on Main and Side Reactions During the Transesterification of Dimethyl Terephthalate with 1, 4-Butanediol
- 1 November 1987
- journal article
- research article
- Published by Taylor & Francis in Journal of Macromolecular Science: Part A - Chemistry
- Vol. 24 (11) , 1357-1367
- https://doi.org/10.1080/00222338708076951
Abstract
The transesterification of dimethyl terephthalate (DMT) with 1, 4-butane-diol (BD) has been studied by measuring the amount of methanol and tetrahydrofuran formed during the reaction. Investigation of various catalyst systems revealed that titanium isopropoxide was a better catalyst than conventional transesterification catalysts such as manganese and cobalt acetates. Increases in the temperature, BD/DMT ratio, and catalyst concentration led to higher production of methanol. Increases in temperature and BD/DMT ratio raised THF production, but increased catalyst concentration decreased the amount of THF produced. The relative importance of BD dehydration and cyclization of 4-hydroxy-butyl ester end groups in the formation of THF was also studied.Keywords
This publication has 2 references indexed in Scilit:
- Oligomeric bishydroxybutyl terephthalates from terephthalic acidJournal of Polymer Science: Polymer Chemistry Edition, 1981
- Synthesis, characterization and polycondensation of Bis-(4-hydroxybutyl) terephthalatePolymer Bulletin, 1981