JPS5742727A - Production of copolyester - Google Patents
Production of copolyesterInfo
- Publication number
- JPS5742727A JPS5742727A JP11834680A JP11834680A JPS5742727A JP S5742727 A JPS5742727 A JP S5742727A JP 11834680 A JP11834680 A JP 11834680A JP 11834680 A JP11834680 A JP 11834680A JP S5742727 A JPS5742727 A JP S5742727A
- Authority
- JP
- Japan
- Prior art keywords
- copolyester
- acid
- benzoic acid
- polycondensation
- completion
- 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 obtain a copolyester capable of providing moldings having excellent surface luster, by adding a small amount of benzoic acid prior to the completion of the polycondensation of a polyester containing alkylene 4,4'-diphenyldicarboxylate units.
CONSTITUTION: In the production of a copolyester comprising (A) an acid component consisting of 25W80mol% 4,4'-diphenyldicarboxylic acid and 75W20mol% other aromatic and/or alicyclic dicarboxylic acids and (B) a diol component consisting of a 2W6C alkylene glycol; there is added, prior to the completion of the polycondensation, benzoic acid or its esterifiable derivative in an amount of 0.001W 2wt%, based on 4,4'-diphenylcarboxylic acid. Addition of benzoic acid makes it possible to obtain a copolyester having improved melt flow and moldability and being capable of providing moldings having excellent surface luster.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11834680A JPS5742727A (en) | 1980-08-29 | 1980-08-29 | Production of copolyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11834680A JPS5742727A (en) | 1980-08-29 | 1980-08-29 | Production of copolyester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5742727A true JPS5742727A (en) | 1982-03-10 |
Family
ID=14734412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11834680A Pending JPS5742727A (en) | 1980-08-29 | 1980-08-29 | Production of copolyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5742727A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4626026A (en) * | 1983-08-23 | 1986-12-02 | Nissan Shatai Company, Limited | Automotive roof structure with a detachable set roof |
-
1980
- 1980-08-29 JP JP11834680A patent/JPS5742727A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4626026A (en) * | 1983-08-23 | 1986-12-02 | Nissan Shatai Company, Limited | Automotive roof structure with a detachable set roof |
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