JPS5515423A - Continuous esterification of terephthalic acid - Google Patents
Continuous esterification of terephthalic acidInfo
- Publication number
- JPS5515423A JPS5515423A JP8724178A JP8724178A JPS5515423A JP S5515423 A JPS5515423 A JP S5515423A JP 8724178 A JP8724178 A JP 8724178A JP 8724178 A JP8724178 A JP 8724178A JP S5515423 A JPS5515423 A JP S5515423A
- Authority
- JP
- Japan
- Prior art keywords
- reactors
- reactor
- terephthalic acid
- 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 3
- 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
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 238000009987 spinning Methods 0.000 abstract 1
- -1 terephthalic acid ester Chemical class 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
- 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: Therephthalic acid is esterified with ethylene glycol in a plurality of reactors in series. A polymerization catalyst, e.g. Ti, Ge, Sn, or Co compound, is added to the reaction system before the first reactor; a heat stabilizer, e.g. a phosphate or triphosphite, to the system after the second one. Esterification is carried up to a rate of reaction of 60W95% in the first reactor and then up to 92W 98% in the reactors after the second one.
EFFECT: Improved color and good operating condition in spinning and drawing steps due to almost complete suppressed formation of insoluble fine particles. A high catalytic a ctivity in the esterification product.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8724178A JPS5515423A (en) | 1978-07-18 | 1978-07-18 | Continuous esterification of terephthalic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8724178A JPS5515423A (en) | 1978-07-18 | 1978-07-18 | Continuous esterification of terephthalic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5515423A true JPS5515423A (en) | 1980-02-02 |
Family
ID=13909310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8724178A Pending JPS5515423A (en) | 1978-07-18 | 1978-07-18 | Continuous esterification of terephthalic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5515423A (en) |
-
1978
- 1978-07-18 JP JP8724178A patent/JPS5515423A/en active Pending
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