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Formation of diethylene glycol by dehydration of glycol in the presence of terephthalic acid
Author(s) -
Yamada Toshiro
Publication year - 1988
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760280107
Subject(s) - diethylene glycol , terephthalic acid , ethylene glycol , dehydration , boiling point , materials science , polymer chemistry , nuclear chemistry , organic chemistry , chemistry , composite material , polyester , biochemistry
The amount of diethylene glycol (DEG) formed as a result of the dehydration reaction of ethylene glycol (EG) in the presence of terephthalic acid (TPA) was measured. It became clear that the amount of DEG formed at the boiling point of EG can be expressed by a regression equation. It was confirmed that by this equation, the amount of DEG formed under the carboxylic end group concentration of 0.0 to 0.6 Eq/kg and the reaction time of 0 to 20 h can be estimated with high accuracy.