JPS57190019A - Preparation of polyester - Google Patents
Preparation of polyesterInfo
- Publication number
- JPS57190019A JPS57190019A JP7466781A JP7466781A JPS57190019A JP S57190019 A JPS57190019 A JP S57190019A JP 7466781 A JP7466781 A JP 7466781A JP 7466781 A JP7466781 A JP 7466781A JP S57190019 A JPS57190019 A JP S57190019A
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- ethylene glycol
- composed mainly
- gallium compound
- 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 free from insoluble matters and having high transparency, by adding an organic gallium compound as a catalyst for the polymerization of terephthalic acid and ethylene glycol, etc.
CONSTITUTION: The objective polyester is repared by esterifying (A) terephthalic acid or a difunctional carboxylic acid composed mainly thereof, or its ester- forming derivative with (B) ethylene glycol or a glycol component composed mainly thereof, and then subjecting the product to the polycondensation reaction in the presence of 0.1×10-4W10×10-4mol (based on 1mol of the acid composition constituting the polyester) of an organic gallium compound of formula R2GaX, RGaX2 or RGaO (R is lower alkyl or aryl; X is H, F, Cl, Br, OH, OR, etc.) (e.g. dimethylgallium hydride).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7466781A JPS57190019A (en) | 1981-05-18 | 1981-05-18 | Preparation of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7466781A JPS57190019A (en) | 1981-05-18 | 1981-05-18 | Preparation of polyester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57190019A true JPS57190019A (en) | 1982-11-22 |
Family
ID=13553807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7466781A Pending JPS57190019A (en) | 1981-05-18 | 1981-05-18 | Preparation of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57190019A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997019974A1 (en) * | 1995-11-30 | 1997-06-05 | Eastman Chemical Company | Polyesters modified with 1,4-cyclohexanedimethanol having high clarity prepared utilizing an antimony containing catalyst/stabilizer system |
-
1981
- 1981-05-18 JP JP7466781A patent/JPS57190019A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997019974A1 (en) * | 1995-11-30 | 1997-06-05 | Eastman Chemical Company | Polyesters modified with 1,4-cyclohexanedimethanol having high clarity prepared utilizing an antimony containing catalyst/stabilizer system |
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