JPS5515422A - Continuous esterification of terephthalic acid - Google Patents
Continuous esterification of terephthalic acidInfo
- Publication number
- JPS5515422A JPS5515422A JP8724078A JP8724078A JPS5515422A JP S5515422 A JPS5515422 A JP S5515422A JP 8724078 A JP8724078 A JP 8724078A JP 8724078 A JP8724078 A JP 8724078A JP S5515422 A JPS5515422 A JP S5515422A
- Authority
- JP
- Japan
- Prior art keywords
- terephthalic acid
- reactors
- reactor
- esterification
- fine particles
- 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
Links
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title abstract 5
- 230000032050 esterification Effects 0.000 title abstract 3
- 238000005886 esterification reaction Methods 0.000 title abstract 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 239000010419 fine particle Substances 0.000 abstract 2
- 239000012760 heat stabilizer Substances 0.000 abstract 2
- 239000002685 polymerization catalyst Substances 0.000 abstract 2
- -1 terephthalic acid ester Chemical class 0.000 abstract 2
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 239000011574 phosphorus Substances 0.000 abstract 1
- 238000009987 spinning Methods 0.000 abstract 1
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 heat stabilizer before the first reactor and a polymerization catalyst after the second one, using a plurality of reactors in series.
CONSTITUTION: Terephthalic acid is esterified with ethylene glycol in a plurality of reactors. A heat stabilizer, e.g. a phosphorus compound, is added to the reaction system before the first reactor; a polymerization catalyst, e.g. Sb, Ti, Ge, Sn, or Co compound, to the system after the second one. Esterification is carried out up to a rate of reaction of 60W95% in the first reactor, and then up to 92W98% in the reactors after the second one.
EFFECT: Improved color and good operating conditions in spinning and drawing steps due to a few insoluble fine particles. A high catalytic activity in the esterification product.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8724078A JPS5515422A (en) | 1978-07-18 | 1978-07-18 | Continuous esterification of terephthalic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8724078A JPS5515422A (en) | 1978-07-18 | 1978-07-18 | Continuous esterification of terephthalic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5515422A true JPS5515422A (en) | 1980-02-02 |
Family
ID=13909283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8724078A Pending JPS5515422A (en) | 1978-07-18 | 1978-07-18 | Continuous esterification of terephthalic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5515422A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691131A (en) * | 2012-06-19 | 2012-09-26 | 福建经纬新纤科技实业有限公司 | Manufacturing equipment system of flame-retardant polyester fiber |
-
1978
- 1978-07-18 JP JP8724078A patent/JPS5515422A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691131A (en) * | 2012-06-19 | 2012-09-26 | 福建经纬新纤科技实业有限公司 | Manufacturing equipment system of flame-retardant polyester fiber |
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