JPS5523142A - Preparation of polyester - Google Patents
Preparation of polyesterInfo
- Publication number
- JPS5523142A JPS5523142A JP9595878A JP9595878A JPS5523142A JP S5523142 A JPS5523142 A JP S5523142A JP 9595878 A JP9595878 A JP 9595878A JP 9595878 A JP9595878 A JP 9595878A JP S5523142 A JPS5523142 A JP S5523142A
- Authority
- JP
- Japan
- Prior art keywords
- reaction
- ester
- compound
- compounds
- polyester
- 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.)
- Granted
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
PURPOSE: To prepare a polyester having excellent slippery and transparency, by carrying out the polycondensation reaction in the presence of specific two P-compounds after the ester exchange reaction using a Ca-compound as an ester-exchange catalyst.
CONSTITUTION: A reaction system containing an acid component mainly of a lower alkyl ester of terephthalic acid, and a glycol component composed mainly of ethylene glycol, is subjected to ester exchange reaction in the presence of (A) 0.05W 0.3mol%, based on the acid component, of a soluble Ca-compound at 220W250°C. After the completion of the ester exchange reaction, a trivalent P-compound of formula (R1W3 are H, alkyl) (B), and two or more kinds of penta-valent P-compounds (C) having an average acid value of 0.001W0.2, are added to the reaction system, and the polycondensation reaction is completed in the presence of a polymerization catalyst. The molar ratio of (C) to (B) is 1W30, and that of (B)+(C) to (A) is 1W4.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9595878A JPS608008B2 (en) | 1978-08-07 | 1978-08-07 | Polyester manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9595878A JPS608008B2 (en) | 1978-08-07 | 1978-08-07 | Polyester manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5523142A true JPS5523142A (en) | 1980-02-19 |
JPS608008B2 JPS608008B2 (en) | 1985-02-28 |
Family
ID=14151735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9595878A Expired JPS608008B2 (en) | 1978-08-07 | 1978-08-07 | Polyester manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS608008B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57119923A (en) * | 1981-01-16 | 1982-07-26 | Diafoil Co Ltd | Manufacture of polyester |
JPS6092323A (en) * | 1983-10-25 | 1985-05-23 | Diafoil Co Ltd | Production of polyester for film formation |
-
1978
- 1978-08-07 JP JP9595878A patent/JPS608008B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57119923A (en) * | 1981-01-16 | 1982-07-26 | Diafoil Co Ltd | Manufacture of polyester |
JPH0329810B2 (en) * | 1981-01-16 | 1991-04-25 | ||
JPS6092323A (en) * | 1983-10-25 | 1985-05-23 | Diafoil Co Ltd | Production of polyester for film formation |
Also Published As
Publication number | Publication date |
---|---|
JPS608008B2 (en) | 1985-02-28 |
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