JPS54135894A - Batch-wise esterification - Google Patents

Batch-wise esterification

Info

Publication number
JPS54135894A
JPS54135894A JP4348178A JP4348178A JPS54135894A JP S54135894 A JPS54135894 A JP S54135894A JP 4348178 A JP4348178 A JP 4348178A JP 4348178 A JP4348178 A JP 4348178A JP S54135894 A JPS54135894 A JP S54135894A
Authority
JP
Japan
Prior art keywords
take
tpa
reaction system
esterification
wise
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4348178A
Other languages
Japanese (ja)
Inventor
Hiroyuki Ikeuchi
Heiroku Suganuma
Shunsuke Shoji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP4348178A priority Critical patent/JPS54135894A/en
Publication of JPS54135894A publication Critical patent/JPS54135894A/en
Pending legal-status Critical Current

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  • Polyesters Or Polycarbonates (AREA)

Abstract

PURPOSE: To obtain high-quality bis-β-hydroxyethyl terephthalate (oligomer) having improved polycondensation properties, by specifying a take-out amount and take-out time of reflux of a rectifying column in batch-wise esterificaton.
CONSTITUTION: In esterification wherein a slurry consisting of (A) terephthalic acid(TPA) and (B) ethylene glycol(EG) in a molar ratio of (A) to (B) of 1.05W 1.50 is fed to a reaction system in which bis-β-hydroxyethyl phthalate(oligomer) exists and the reflux of a rectifying column, containing ethylene glycol formed in the reaction system, is partly removed from the reaction system, a take-out amount of EG is maintained in the range shown by the formula I;[EGw is a take-out amount of EG(unit: a molar ratio of EG to TPA fed)]; take-out time of EG, in the range shown by the formula II;[Ft is feed time(minute) of the slurry consisting of TPA and EG; EGt is take-out time(minute) of EG].
COPYRIGHT: (C)1979,JPO&Japio
JP4348178A 1978-04-13 1978-04-13 Batch-wise esterification Pending JPS54135894A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4348178A JPS54135894A (en) 1978-04-13 1978-04-13 Batch-wise esterification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4348178A JPS54135894A (en) 1978-04-13 1978-04-13 Batch-wise esterification

Publications (1)

Publication Number Publication Date
JPS54135894A true JPS54135894A (en) 1979-10-22

Family

ID=12664905

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4348178A Pending JPS54135894A (en) 1978-04-13 1978-04-13 Batch-wise esterification

Country Status (1)

Country Link
JP (1) JPS54135894A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5164595A (en) * 1974-10-16 1976-06-04 Basf Ag
JPS51100036A (en) * 1975-03-03 1976-09-03 Mitsubishi Rayon Co ESUTERUKAHOHO

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5164595A (en) * 1974-10-16 1976-06-04 Basf Ag
JPS51100036A (en) * 1975-03-03 1976-09-03 Mitsubishi Rayon Co ESUTERUKAHOHO

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