JPS54150495A - Production of polyester - Google Patents
Production of polyesterInfo
- Publication number
- JPS54150495A JPS54150495A JP5979778A JP5979778A JPS54150495A JP S54150495 A JPS54150495 A JP S54150495A JP 5979778 A JP5979778 A JP 5979778A JP 5979778 A JP5979778 A JP 5979778A JP S54150495 A JPS54150495 A JP S54150495A
- Authority
- JP
- Japan
- Prior art keywords
- tpa
- polyester
- bhet
- molar ratio
- terephthalic acid
- 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
- 229920000728 polyester Polymers 0.000 title abstract 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 abstract 10
- 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 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 abstract 3
- 230000032050 esterification Effects 0.000 abstract 2
- 238000005886 esterification reaction Methods 0.000 abstract 2
- 238000006068 polycondensation reaction Methods 0.000 abstract 2
- 238000006116 polymerization reaction Methods 0.000 abstract 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
PURPOSE: The direct esterification between terephthalic acid and ethylene glycol forms oligomers, which is decomposed with an excess amount of EG, then the polycondensation reaction is effected, thus producing polyester with high transparency and polymerization degree.
CONSTITUTION: To bishydroxyethyl terephthalate (BHET) oligomers resulting from the direct esterification of terephthalic acid (TPA) with EG are continuously added a slurry of EG/TPA at a molar ratio of less than 1.2/1.0 and they are heated. The newly formed BHET is separated and transferred to the polycondensation tank and EG is added so that EG/TPA molar ratio becomes 1.2W2.0. Thus, polyester with a diethylene glycol content of less than 2% and high polymerization degree is obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5979778A JPS54150495A (en) | 1978-05-19 | 1978-05-19 | Production of polyester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5979778A JPS54150495A (en) | 1978-05-19 | 1978-05-19 | Production of polyester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54150495A true JPS54150495A (en) | 1979-11-26 |
Family
ID=13123619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5979778A Pending JPS54150495A (en) | 1978-05-19 | 1978-05-19 | Production of polyester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54150495A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100430627B1 (en) * | 2001-07-10 | 2004-05-10 | 주식회사 코오롱 | A process of preparing the alkali extractable polyester |
-
1978
- 1978-05-19 JP JP5979778A patent/JPS54150495A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100430627B1 (en) * | 2001-07-10 | 2004-05-10 | 주식회사 코오롱 | A process of preparing the alkali extractable polyester |
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