JPS5457594A - Preparation of polyester - Google Patents
Preparation of polyesterInfo
- Publication number
- JPS5457594A JPS5457594A JP12408377A JP12408377A JPS5457594A JP S5457594 A JPS5457594 A JP S5457594A JP 12408377 A JP12408377 A JP 12408377A JP 12408377 A JP12408377 A JP 12408377A JP S5457594 A JPS5457594 A JP S5457594A
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- acid component
- alkylene glycol
- polycondensation
- terephthalic acid
- 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 having a high softening point, by the direct esterification and subsequent polycondensation of terephthalic acid with an alkylene glycol under specific condition in the presence of a specific catalyst.
CONSTITUTION: 1 Mole of a difunctional carboxylic acid component consisting mainly of terephthalic acid is esterified with 1.05W1.6 moles of an alkylene glycol component at 230W280°C under ordinary pressure or positive pressure in the presence of a titanium alkoxide (3W20 m mol% based on the acid component) and an amine compound, e.g. triethylamine, etc. (0.001W0.01 wt.% based on the acid component) to attain a conversion of 80W96%, and subsequently, polycondensation is carried out under reduced pressure without addition of other catalysts to give a polyester.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12408377A JPS5457594A (en) | 1977-10-18 | 1977-10-18 | Preparation of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12408377A JPS5457594A (en) | 1977-10-18 | 1977-10-18 | Preparation of polyester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5457594A true JPS5457594A (en) | 1979-05-09 |
Family
ID=14876498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12408377A Pending JPS5457594A (en) | 1977-10-18 | 1977-10-18 | Preparation of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5457594A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010064390A1 (en) * | 2008-12-02 | 2010-06-10 | 花王株式会社 | Process for producing polyester resin |
-
1977
- 1977-10-18 JP JP12408377A patent/JPS5457594A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010064390A1 (en) * | 2008-12-02 | 2010-06-10 | 花王株式会社 | Process for producing polyester resin |
US8263728B2 (en) | 2008-12-02 | 2012-09-11 | Kao Corporation | Method for producing polyester resin |
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