BATCH PROCESS FOR TRANSESTERIFICATION

BATCH PROCESS FOR TRANSESTERIFICATION

PROBLEM TO BE SOLVED: To provide a batch process for transesterification between DMT and alkylene glycol that is lowered in the fuel cost with the operations stabilized by preliminarily inhibiting a part of DMT from splashing into the reaction distillate during the transesterification and utilizing...

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Hauptverfasser: MURAI MASUO, UCHIDA TOSHIO
Format: Patent
Sprache:eng
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CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator MURAI MASUO
UCHIDA TOSHIO
description PROBLEM TO BE SOLVED: To provide a batch process for transesterification between DMT and alkylene glycol that is lowered in the fuel cost with the operations stabilized by preliminarily inhibiting a part of DMT from splashing into the reaction distillate during the transesterification and utilizing the distillate as a safe boiler fuel. SOLUTION: When the transesterification reaction between dimethyl terephthalate and alkylene glycol is carried out batch wise, the low boiling substances occurring in the transesterification reaction process is allowed to flow through the rectification column 7 into the condenser 8 and the distillate is cooled, condensed and distilled off. A part of the distillate is refluxed to control the temperature in the rectification column. During the time from the start of transesterification to the elapse of a prescribed time, the reaction distillate in the rectification column is maintained under the total reflux.
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SOLUTION: When the transesterification reaction between dimethyl terephthalate and alkylene glycol is carried out batch wise, the low boiling substances occurring in the transesterification reaction process is allowed to flow through the rectification column 7 into the condenser 8 and the distillate is cooled, condensed and distilled off. A part of the distillate is refluxed to control the temperature in the rectification column. 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SOLUTION: When the transesterification reaction between dimethyl terephthalate and alkylene glycol is carried out batch wise, the low boiling substances occurring in the transesterification reaction process is allowed to flow through the rectification column 7 into the condenser 8 and the distillate is cooled, condensed and distilled off. A part of the distillate is refluxed to control the temperature in the rectification column. 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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title BATCH PROCESS FOR TRANSESTERIFICATION
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