JPS5767629A - Preparation of polyester - Google Patents
Preparation of polyesterInfo
- Publication number
- JPS5767629A JPS5767629A JP14287280A JP14287280A JPS5767629A JP S5767629 A JPS5767629 A JP S5767629A JP 14287280 A JP14287280 A JP 14287280A JP 14287280 A JP14287280 A JP 14287280A JP S5767629 A JPS5767629 A JP S5767629A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- temperature
- catalyst
- melting point
- lower alkyl
- 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
- Artificial Filaments (AREA)
Abstract
PURPOSE: To carry out the melt polymerization of a polyester, in high efficiency, using a raw material containing water and decomposable components, by keeping at least a part of the raw material in the absence of a catalyst at a temperature between the melting point and the decomposition temperature of the raw material.
CONSTITUTION: A dicarboxylic acid lower alkyl ester (e.g. dimethyl sebacate) and a glycol (e.g. hexamethylene glycol), or an oxycarboxylic acid lower alkyl ester (e.g. hydroxyethoxybenzoic acid) are charged in a reactor as the raw materials, and heated at a temperature at or above the melting point and below the decomposition temperature of the raw material (e.g. 120W145°C) under inert gas stream for a definite time interval to distill off at least a part of the low-boiling component such as water or the decomposition product in the raw material. After the treatment, the raw material are subjected to the melt polymerization in the presence of a catalyst (e.g. tetrabutyl titanate).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14287280A JPS5767629A (en) | 1980-10-15 | 1980-10-15 | Preparation of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14287280A JPS5767629A (en) | 1980-10-15 | 1980-10-15 | Preparation of polyester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5767629A true JPS5767629A (en) | 1982-04-24 |
Family
ID=15325553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14287280A Pending JPS5767629A (en) | 1980-10-15 | 1980-10-15 | Preparation of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5767629A (en) |
-
1980
- 1980-10-15 JP JP14287280A patent/JPS5767629A/en active Pending
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