JPS5736121A - Preparation of polyester - Google Patents
Preparation of polyesterInfo
- Publication number
- JPS5736121A JPS5736121A JP11193180A JP11193180A JPS5736121A JP S5736121 A JPS5736121 A JP S5736121A JP 11193180 A JP11193180 A JP 11193180A JP 11193180 A JP11193180 A JP 11193180A JP S5736121 A JPS5736121 A JP S5736121A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- polyester
- mol
- composed mainly
- preparation
- 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 prepare a polyester having excellent clarity and color tone, in a short time, by using a specific sulfonic acid compound or its acid anhydride as a catalyst.
CONSTITUTION: In the preparation of a polyester from terephthalic acid or dicarboxylic acids composed mainly thereof or their ester-forming derivatives, and ethylene glycol or glycols composed mainly thereof, the reaction is carried out in the presence of a catalyst composed of a sulfonic acid compound of formula [Ar is aromatic group; X is nitro, nitroso, acyl, (substituted) amino, cyano, halogen, etc.; Y is H or N(R)4 (R is H, lower alkyl, or aryl); k and l are 0W3 (provided that k and l are not 0 at the same time); m is 1W3; n is 1W4] or its acid anhydride. The pref. amount of the catalyst is, based on the acid component, 0.2×10-4W5×10-4mol when the substituent group of the aromatic ring is an electron-attracting group, and ≤50×10-4mol in the other case.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11193180A JPS5736121A (en) | 1980-08-14 | 1980-08-14 | Preparation of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11193180A JPS5736121A (en) | 1980-08-14 | 1980-08-14 | Preparation of polyester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5736121A true JPS5736121A (en) | 1982-02-26 |
Family
ID=14573712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11193180A Pending JPS5736121A (en) | 1980-08-14 | 1980-08-14 | Preparation of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5736121A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5659074A (en) * | 1995-06-12 | 1997-08-19 | Zeneca Limited | Herbicide intermediates |
-
1980
- 1980-08-14 JP JP11193180A patent/JPS5736121A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5659074A (en) * | 1995-06-12 | 1997-08-19 | Zeneca Limited | Herbicide intermediates |
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