Bis-(2-hydroxyethyl)-terephthalate

Details Bis-(2-hydroxyethyl)-terephthalate Bis-(2-hydroxyethyl)-terephthalate

1975-03-17

1977-01-11

Myers, Jane S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 6982

Patent

active

040026671

ABSTRACT:
A process for the manufacture of bis-(2-hydroxyethyl)-terephthalate which comprises heating together dimethyl terephthalate and a substantial excess of ethylene glycol in the presence of a basic ester interchange catalyst, under reduced pressure whereby the by-product methanol is distilled out of the system. This process enables bis(2-hydroxyethyl)-terephthalate of good quality to be made in improved yield and with minimal oligomer formation compared with previously known methods. The product finds application in the manufacture of polymers such as poly (ethylene terephthalate).

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