Purification of ethylene glycol recovered from polyester resins

Purification of ethylene glycol recovered from polyester resins

There is described a process for removing dimethyl terephthalate contaminants from ethylene glycol. The process comprises distilling ethylene glycol in the presence of an ester exchange catalyst to cause reaction between ethylene glycol and dimethyl terephthalate to form compounds that are less vola...

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Hauptverfasser: GAMBLE, WILLIAM JAMES, NAUJOKAS, ANDRIUS ALGIMANTAS
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Sprache:eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator GAMBLE
WILLIAM JAMES
NAUJOKAS
ANDRIUS ALGIMANTAS
description There is described a process for removing dimethyl terephthalate contaminants from ethylene glycol. The process comprises distilling ethylene glycol in the presence of an ester exchange catalyst to cause reaction between ethylene glycol and dimethyl terephthalate to form compounds that are less volatile than either ethylene glycol or dimethyl terephthalate, such as bishydroxyethyl terephthalate.
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CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title Purification of ethylene glycol recovered from polyester resins
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