JPS6456726A - Continuous polymerization for polyester - Google Patents
Continuous polymerization for polyesterInfo
- Publication number
- JPS6456726A JPS6456726A JP21141687A JP21141687A JPS6456726A JP S6456726 A JPS6456726 A JP S6456726A JP 21141687 A JP21141687 A JP 21141687A JP 21141687 A JP21141687 A JP 21141687A JP S6456726 A JPS6456726 A JP S6456726A
- Authority
- JP
- Japan
- Prior art keywords
- followed
- polyester
- normal temperature
- aging
- incorporated
- 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
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
PURPOSE:To continuously obtain a polyester outstanding in processability and productivity, by aging antimony trioxide in the mixed slurry of starting row materials at normal temperature followed by adding a trialkyl phosphate-treated solution. CONSTITUTION:A slurry comprising (A) terephthalic acid and (B) ethylene glycol is incorporated with (C) antimony trioxide in the form of glycol solution in such amount as to be <=500ppm per wt. of the final polymer followed by aging at normal temperature for 8-24hr and then raising the temperature to >=250 deg.C in an esterification vessel, the resulting system being incorporated with (D) a trialkyl phosphate of formula (R1-R3 are each methyl etc.) in the form a solution prepared by reflux treatment of said phosphate with ethylene glycol followed by cooling to normal temperature in such amount as to be <=50ppm on a phosphorus element basis, per wt. of the final polymer to produce the oligomer followed by continuous polymerization, thus obtaining the objective polyester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21141687A JP2512491B2 (en) | 1987-08-27 | 1987-08-27 | Continuous polymerization method for polyester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21141687A JP2512491B2 (en) | 1987-08-27 | 1987-08-27 | Continuous polymerization method for polyester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6456726A true JPS6456726A (en) | 1989-03-03 |
| JP2512491B2 JP2512491B2 (en) | 1996-07-03 |
Family
ID=16605594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21141687A Expired - Lifetime JP2512491B2 (en) | 1987-08-27 | 1987-08-27 | Continuous polymerization method for polyester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2512491B2 (en) |
-
1987
- 1987-08-27 JP JP21141687A patent/JP2512491B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2512491B2 (en) | 1996-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 12 Free format text: PAYMENT UNTIL: 20080416 |