JPS57205422A - Production of polyester - Google Patents
Production of polyesterInfo
- Publication number
- JPS57205422A JPS57205422A JP8873281A JP8873281A JPS57205422A JP S57205422 A JPS57205422 A JP S57205422A JP 8873281 A JP8873281 A JP 8873281A JP 8873281 A JP8873281 A JP 8873281A JP S57205422 A JPS57205422 A JP S57205422A
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- compound
- added
- lithium
- ethylene glycol
- 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
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
PURPOSE: To obtain a polyester capable of providing abrasion-resistant films, by adding a phosphorus compound in a specified mol ratio to an Li compound used as a catalyst at specified two points of time in the production of a polyester.
CONSTITUTION: In transesterifying an acid component based on a lower alkyl terephthalate with a glycol component based on ethylene glycol, an ethylene glycol-soluble lithium compound (e.g., lithium acetate) and below 0.4 molar time, based on lithium compound, of a phosphorus compound (e.g., trimethyl phosphate) are added to the reaction system. After completion of the transesterification, a trialkyl phosphate is added so that the total mols of the phosphorus compounds added is 0.5W2 times the mols of the lithium compound and, subsequently the reaction mixture is subjected to a polycondensation reaction to obtain the purpose polyester.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8873281A JPS57205422A (en) | 1981-06-09 | 1981-06-09 | Production of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8873281A JPS57205422A (en) | 1981-06-09 | 1981-06-09 | Production of polyester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57205422A true JPS57205422A (en) | 1982-12-16 |
Family
ID=13951088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8873281A Pending JPS57205422A (en) | 1981-06-09 | 1981-06-09 | Production of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57205422A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7357229B2 (en) | 2002-05-29 | 2008-04-15 | Kayaba Industry Co., Ltd. | Electromagnetic shock absorber |
-
1981
- 1981-06-09 JP JP8873281A patent/JPS57205422A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7357229B2 (en) | 2002-05-29 | 2008-04-15 | Kayaba Industry Co., Ltd. | Electromagnetic shock absorber |
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