JPS56110720A - Preparation of polyester of high polymerization degree - Google Patents
Preparation of polyester of high polymerization degreeInfo
- Publication number
- JPS56110720A JPS56110720A JP1299380A JP1299380A JPS56110720A JP S56110720 A JPS56110720 A JP S56110720A JP 1299380 A JP1299380 A JP 1299380A JP 1299380 A JP1299380 A JP 1299380A JP S56110720 A JPS56110720 A JP S56110720A
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- formula
- polymerization degree
- high polymerization
- bisoxazoline
- 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
Abstract
PURPOSE: To prepare a polyester of high polymerization degree, having few terminal carboxyl groups, in a short time, by the reaction of a powdered saturated polyester with a bisoxazoline at a temperature below the melting point of the polyester.
CONSTITUTION: A powdered saturated polyester is reacted with 0.1W10wt%, based on the polyester, bisoxazoline of the formula (wherein R1WR8 are H or monovalent organic group; D is a bivalent organic group; n is 0.1), at a temperature below the melting point of said polyester. An aromatic dicarboxylic acid, particularly therephthalic acid is preferable as an acid component which constitutes the saturated polyester, and ethylene glycol or tetramethylene glycol is particularly preferable as a glycol component. The bisoxyazoline of the formula is particularly preferably one of the formula, where n is 0.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1299380A JPS56110720A (en) | 1980-02-07 | 1980-02-07 | Preparation of polyester of high polymerization degree |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1299380A JPS56110720A (en) | 1980-02-07 | 1980-02-07 | Preparation of polyester of high polymerization degree |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56110720A true JPS56110720A (en) | 1981-09-02 |
Family
ID=11820723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1299380A Pending JPS56110720A (en) | 1980-02-07 | 1980-02-07 | Preparation of polyester of high polymerization degree |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56110720A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6399228A (en) * | 1986-06-23 | 1988-04-30 | Teijin Ltd | Production of polyester having high polymerization degree |
WO1996025448A1 (en) * | 1995-02-16 | 1996-08-22 | Basf Aktiengesellschaft | Biodegradable polymers, process for producing them and their use in preparing biodegradable mouldings |
-
1980
- 1980-02-07 JP JP1299380A patent/JPS56110720A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6399228A (en) * | 1986-06-23 | 1988-04-30 | Teijin Ltd | Production of polyester having high polymerization degree |
WO1996025448A1 (en) * | 1995-02-16 | 1996-08-22 | Basf Aktiengesellschaft | Biodegradable polymers, process for producing them and their use in preparing biodegradable mouldings |
WO1996025446A1 (en) * | 1995-02-16 | 1996-08-22 | Basf Aktiengesellschaft | Biodegradable polymers, process for producing them and their use in preparing biodegradable mouldings |
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