JPS5371035A - Recovery and purification of terephthalic acid dimethylester - Google Patents
Recovery and purification of terephthalic acid dimethylesterInfo
- 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
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
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)
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 |
-
1976
- 1976-12-08 JP JP14656776A patent/JPS5820951B2/en not_active Expired
Cited By (1)
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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