JPS5371035A - Recovery and purification of terephthalic acid dimethylester - Google Patents

Recovery and purification of terephthalic acid dimethylester

Info

Publication number
JPS5371035A
JPS5371035A JP14656776A JP14656776A JPS5371035A JP S5371035 A JPS5371035 A JP S5371035A JP 14656776 A JP14656776 A JP 14656776A JP 14656776 A JP14656776 A JP 14656776A JP S5371035 A JPS5371035 A JP S5371035A
Authority
JP
Japan
Prior art keywords
terephthalic acid
purification
recovery
acid dimethylester
dimethylester
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.)
Granted
Application number
JP14656776A
Other languages
Japanese (ja)
Other versions
JPS5820951B2 (en
Inventor
Noriaki Yokoi
Kan Tagami
Tetsushi Habara
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 JP14656776A priority Critical patent/JPS5820951B2/en
Publication of JPS5371035A publication Critical patent/JPS5371035A/en
Publication of JPS5820951B2 publication Critical patent/JPS5820951B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To recover highly pure terephthalic acid dimethylester by disilling this ester while bubbling a methanol gas into a mixture of polyethyleneterephthalate and crude BHET in the presence of a depolymerization catalyst, followed by rectifying.
COPYRIGHT: (C)1978,JPO&Japio
JP14656776A 1976-12-08 1976-12-08 Recovery and purification method for dimethyl terephthalate Expired JPS5820951B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14656776A JPS5820951B2 (en) 1976-12-08 1976-12-08 Recovery and purification method for dimethyl terephthalate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14656776A JPS5820951B2 (en) 1976-12-08 1976-12-08 Recovery and purification method for dimethyl terephthalate

Publications (2)

Publication Number Publication Date
JPS5371035A true JPS5371035A (en) 1978-06-24
JPS5820951B2 JPS5820951B2 (en) 1983-04-26

Family

ID=15410586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14656776A Expired JPS5820951B2 (en) 1976-12-08 1976-12-08 Recovery and purification method for dimethyl terephthalate

Country Status (1)

Country Link
JP (1) JPS5820951B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001294552A (en) * 2000-04-14 2001-10-23 Teijin Ltd Method for recovering dimethyl terephthalate from polyalkylene terephthalate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001294552A (en) * 2000-04-14 2001-10-23 Teijin Ltd Method for recovering dimethyl terephthalate from polyalkylene terephthalate

Also Published As

Publication number Publication date
JPS5820951B2 (en) 1983-04-26

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