JPS5515424A - Continuous esterification of terephthalic acid - Google Patents
Continuous esterification of terephthalic acidInfo
- Publication number
- JPS5515424A JPS5515424A JP8724278A JP8724278A JPS5515424A JP S5515424 A JPS5515424 A JP S5515424A JP 8724278 A JP8724278 A JP 8724278A JP 8724278 A JP8724278 A JP 8724278A JP S5515424 A JPS5515424 A JP S5515424A
- Authority
- JP
- Japan
- Prior art keywords
- terephthalic acid
- reactors
- reactor
- compound
- series
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
PURPOSE: To obtain a terephthalic acid ester containing a few insoluble fine particles, by adding a polymerization catalyst before the first reactor and a heat stabilizer after the second one, using a plurality of reactors in series.
CONSTITUTION: Terephthalic acid is esterified with ethylene glycol in a plurality of reactors in series. A polymerization catalyst, e.g. a Sb compound or together with a Co compound, is added to the reaction system before the first reactor; a heat stabilizer, e.g. a triphosphate, to the system after the second one. Esterification is carried out in the first reactor up to a rate of reaction of 60W95%, and then up to 92W98% in the reactors after the second one.
EFFECT: Improved color and good spinning and drawing conditions due to the nearly completely suppressed formation of insoluble fine particles.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8724278A JPS5515424A (en) | 1978-07-18 | 1978-07-18 | Continuous esterification of terephthalic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8724278A JPS5515424A (en) | 1978-07-18 | 1978-07-18 | Continuous esterification of terephthalic acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5515424A true JPS5515424A (en) | 1980-02-02 |
| JPS6111214B2 JPS6111214B2 (en) | 1986-04-01 |
Family
ID=13909335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8724278A Granted JPS5515424A (en) | 1978-07-18 | 1978-07-18 | Continuous esterification of terephthalic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5515424A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE32765E (en) * | 1981-03-20 | 1988-10-11 | The Goodyear Tire & Rubber Company | High clarity colorless polyesters |
| EP4032875A4 (en) * | 2020-11-17 | 2022-12-21 | LG Chem, Ltd. | Method for preparing diester compound |
-
1978
- 1978-07-18 JP JP8724278A patent/JPS5515424A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE32765E (en) * | 1981-03-20 | 1988-10-11 | The Goodyear Tire & Rubber Company | High clarity colorless polyesters |
| EP4032875A4 (en) * | 2020-11-17 | 2022-12-21 | LG Chem, Ltd. | Method for preparing diester compound |
| JP2023507542A (en) * | 2020-11-17 | 2023-02-24 | エルジー・ケム・リミテッド | Method for producing diester compound |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6111214B2 (en) | 1986-04-01 |
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