DIMETHYL TEREPHTALATE RECOVERY METHOD

DIMETHYL TEREPHTALATE RECOVERY METHOD

The process comprises injection into the residue of methyl alcohol esterification of terephthalic acid, mixed with dimethyl terephthalate from the bottom of the fractionation column. The material injected is a fraction of the non-volatile component of the raw ester. The resulting mixt. is heated and...

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Hauptverfasser: CHETA ILIE, RO, MIHAI TUDOR, RO, VOICU GHEORGHE, RO, STRATULA COSTICA, RO
Format: Patent
Sprache:eng ; rum
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator CHETA ILIE, RO
MIHAI TUDOR, RO
VOICU GHEORGHE, RO
STRATULA COSTICA, RO
description The process comprises injection into the residue of methyl alcohol esterification of terephthalic acid, mixed with dimethyl terephthalate from the bottom of the fractionation column. The material injected is a fraction of the non-volatile component of the raw ester. The resulting mixt. is heated and evaporated, and the vapour phase is sepd. in a supplementary boiler, for recirculation in the column.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title DIMETHYL TEREPHTALATE RECOVERY METHOD
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