JPS57149328A - Production of polyester - Google Patents
Production of polyesterInfo
- Publication number
- JPS57149328A JPS57149328A JP3315081A JP3315081A JPS57149328A JP S57149328 A JPS57149328 A JP S57149328A JP 3315081 A JP3315081 A JP 3315081A JP 3315081 A JP3315081 A JP 3315081A JP S57149328 A JPS57149328 A JP S57149328A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- reaction
- calcium
- point
- polycondensation
- 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
Abstract
PURPOSE: To obtain a film-forming polyester excellent in slidability, opacity and surface appearance, by completing a polycondensation of terephthalic aicd with a glycol at a specified point of the reaction course in the presence of a lithium compound, a calcium compound and a phosphorus compound.
CONSTITUTION: In producing an ethylene terephthalate-based polyester by a transesterification or esterification reaction of terephthalic acid or its esterifiable derivative with a glycol, followed by a polycondensation reaction, the polycondensation reaction is brought to completion by adding a lithium compound, a calcium compound and a phorphorus compound in amounts satisfying relationshipsI, II and III, wherein Li, Ca and P are mol% of the lithium, calcium, and phosphorus compounds, respectively, at a point between the start of the esterification or transesterification reaction and a point at which the polycondensation reaction proceeds to an intrinsic viscosity ≤0.2.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3315081A JPS57149328A (en) | 1981-03-10 | 1981-03-10 | Production of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3315081A JPS57149328A (en) | 1981-03-10 | 1981-03-10 | Production of polyester |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57149328A true JPS57149328A (en) | 1982-09-14 |
JPH0129810B2 JPH0129810B2 (en) | 1989-06-14 |
Family
ID=12378544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3315081A Granted JPS57149328A (en) | 1981-03-10 | 1981-03-10 | Production of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57149328A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS604027A (en) * | 1983-06-23 | 1985-01-10 | Unitika Ltd | Polyester film |
JPH03181549A (en) * | 1989-12-11 | 1991-08-07 | Toray Ind Inc | Polyester composition for insulation film |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50101494A (en) * | 1974-01-14 | 1975-08-12 | ||
JPS51112860A (en) * | 1975-03-31 | 1976-10-05 | Toray Ind Inc | Polyesten composition |
-
1981
- 1981-03-10 JP JP3315081A patent/JPS57149328A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50101494A (en) * | 1974-01-14 | 1975-08-12 | ||
JPS51112860A (en) * | 1975-03-31 | 1976-10-05 | Toray Ind Inc | Polyesten composition |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS604027A (en) * | 1983-06-23 | 1985-01-10 | Unitika Ltd | Polyester film |
JPH03181549A (en) * | 1989-12-11 | 1991-08-07 | Toray Ind Inc | Polyester composition for insulation film |
Also Published As
Publication number | Publication date |
---|---|
JPH0129810B2 (en) | 1989-06-14 |
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