JPS5731926A - Production of copolyester - Google Patents
Production of copolyesterInfo
- Publication number
- JPS5731926A JPS5731926A JP10640280A JP10640280A JPS5731926A JP S5731926 A JPS5731926 A JP S5731926A JP 10640280 A JP10640280 A JP 10640280A JP 10640280 A JP10640280 A JP 10640280A JP S5731926 A JPS5731926 A JP S5731926A
- Authority
- JP
- Japan
- Prior art keywords
- copolyester
- polymer
- intrinsic viscosity
- polymerization
- diphenyl
- 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 produce a high-viscosity, high-crystallinity copolyester, by melt- polymerizing a diphenyl-4,4'-dicarboxylic acid-based acid component with ethylene glycol until a specified intrinsic viscosity is reached and subjecting the polymer to solid phase polymerizaiton.
CONSTITUTION: A copolyester, intrinsic viscosity 0.4W0.65, is obtained by starting melt polymerization of an acid component consisting of 40W65mol% diphenyl-4,4'- dicarboxylic acid and 60W35mol% other aromatic and/or alicyclic dicarboxylic acids with a glycol component based on ethylene glycol at 230W260°C and terminating the polymerization at 280W330°C. Next, a copolyester, intrinsic viscosity ≥0.65, is obtained by subjecting the above copolyester to solid phase polymerization by keeping the polymer at a termperature 10W50°C below the m.p. of the polymer in an inert gas flow.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10640280A JPS5731926A (en) | 1980-08-04 | 1980-08-04 | Production of copolyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10640280A JPS5731926A (en) | 1980-08-04 | 1980-08-04 | Production of copolyester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5731926A true JPS5731926A (en) | 1982-02-20 |
Family
ID=14432685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10640280A Pending JPS5731926A (en) | 1980-08-04 | 1980-08-04 | Production of copolyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5731926A (en) |
-
1980
- 1980-08-04 JP JP10640280A patent/JPS5731926A/en active Pending
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