FR2427324A1 - Batch direct esterification of terephthalic acid with ethylene glycol - using slurry pumped from remote storage vessel to esterification reactors - Google Patents
Batch direct esterification of terephthalic acid with ethylene glycol - using slurry pumped from remote storage vessel to esterification reactorsInfo
- Publication number
- FR2427324A1 FR2427324A1 FR7913519A FR7913519A FR2427324A1 FR 2427324 A1 FR2427324 A1 FR 2427324A1 FR 7913519 A FR7913519 A FR 7913519A FR 7913519 A FR7913519 A FR 7913519A FR 2427324 A1 FR2427324 A1 FR 2427324A1
- Authority
- FR
- France
- Prior art keywords
- esterification
- slurry
- feed
- vessel
- storage vessel
- 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
- 230000032050 esterification Effects 0.000 title abstract 10
- 238000005886 esterification reaction Methods 0.000 title abstract 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 title abstract 6
- 239000002002 slurry Substances 0.000 title abstract 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title abstract 4
- QPKOBORKPHRBPS-UHFFFAOYSA-N bis(2-hydroxyethyl) terephthalate Chemical compound OCCOC(=O)C1=CC=C(C(=O)OCCO)C=C1 QPKOBORKPHRBPS-UHFFFAOYSA-N 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000011109 contamination Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 229920000728 polyester Polymers 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
- C07C69/80—Phthalic acid esters
- C07C69/82—Terephthalic acid esters
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treatment Of Sludge (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Batch direct esterification of terephthalic acid (I) with ethylene glycol (II) is carried out as follows. A slurry of (I) and (II) is prepd. at a controlled rate and with a (II):(I) molar ratio of 0.80-1.70 and the slurry is transferred to a storage vessel. It is then transferred from this to a feed vessel in an esterification zone, using a pump under the storage vessel, then to a prim. feed pipe using a prim. slurry feed pump below the feed vessel and finally to a number of batch esterification vessels using several sec. slurry feed pumps, each connecting the prim. feed pipe with one esterification vessel. Esterification is carried out in the presence of esterification prods. at a pressure of -0.5 to 1.0 kg/cm2G. The process gives prods. consisting mainly of bis(beta-hydroxyethyl) terephthalate (III) and/or its oligomers, which are useful for the prodn. of many polyesters of suitable quality for various applications. The stable slurry is transported over a long distance and is convenient to handle. Sepn. of the zone where finely-divided (I) is handled from the esterification zone prevents contamination of PET with (I) dust. No pressure vessels are needed, which facilitates periodic repair or cleaning of individual vessels. High conversions can be obtd. and copolymerisation and addn. reactions can be carried out easily in the esterification stage, making the process suitable for making small amts. of various prods.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6338978A JPS54157535A (en) | 1978-05-29 | 1978-05-29 | Batchwise esterification process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2427324A1 true FR2427324A1 (en) | 1979-12-28 |
| FR2427324B1 FR2427324B1 (en) | 1984-05-11 |
Family
ID=13227886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7913519A Granted FR2427324A1 (en) | 1978-05-29 | 1979-05-28 | Batch direct esterification of terephthalic acid with ethylene glycol - using slurry pumped from remote storage vessel to esterification reactors |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS54157535A (en) |
| DE (1) | DE2921478A1 (en) |
| FR (1) | FR2427324A1 (en) |
| IT (1) | IT1120975B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1545012A (en) * | 1966-11-18 | 1968-11-08 | Monsanto Co | Process for the direct esterification of terephthalic acid with ethylene glycol and product obtained by this process |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1000045A (en) * | 1961-04-17 | 1965-08-04 | Toyo Rayon Co Ltd | Method of testing terephthalic acid to be converted into polyethylene terephthalate |
| US3590072A (en) * | 1966-11-18 | 1971-06-29 | Monsanto Co | Method for direct esterification of terephthalic acid with ethylene glycol |
| JPS5479242A (en) * | 1977-12-05 | 1979-06-25 | Teijin Ltd | Method of esterification |
-
1978
- 1978-05-29 JP JP6338978A patent/JPS54157535A/en active Granted
-
1979
- 1979-05-26 DE DE19792921478 patent/DE2921478A1/en active Granted
- 1979-05-28 IT IT68139/79A patent/IT1120975B/en active
- 1979-05-28 FR FR7913519A patent/FR2427324A1/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1545012A (en) * | 1966-11-18 | 1968-11-08 | Monsanto Co | Process for the direct esterification of terephthalic acid with ethylene glycol and product obtained by this process |
Non-Patent Citations (1)
| Title |
|---|
| CA1977 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6126771B2 (en) | 1986-06-21 |
| DE2921478C2 (en) | 1989-08-03 |
| IT1120975B (en) | 1986-03-26 |
| DE2921478A1 (en) | 1979-12-13 |
| FR2427324B1 (en) | 1984-05-11 |
| IT7968139A0 (en) | 1979-05-28 |
| JPS54157535A (en) | 1979-12-12 |
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