JPS5550023A - Preparation of polyester - Google Patents
Preparation of polyesterInfo
- Publication number
- JPS5550023A JPS5550023A JP12241878A JP12241878A JPS5550023A JP S5550023 A JPS5550023 A JP S5550023A JP 12241878 A JP12241878 A JP 12241878A JP 12241878 A JP12241878 A JP 12241878A JP S5550023 A JPS5550023 A JP S5550023A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- phosphorus compounds
- alkyl
- compounds
- ethylene glycol
- 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
Abstract
PURPOSE: To prepare a polyester giving a homogeneous film useful as a photographic base film, by carrying out the ester-exchange reaction of an alkyl terephthalate with ethylene glycol in the presence of a Li and a Ca compound, and subjecting the product to the polycondensation reaction in the presence of two kinds of phosphorus compounds.
CONSTITUTION: An acid component composed mainly of a lower alkyl ester of terephthalic acid and a glycol component composed mainly of ethylene glycol are subjected to the ester-exchange reaction in the presence of a Li compound and a Ca compound which are soluble in ethylene glycol, and the resulting product is polymerized by adding two kinds of phosphorus compounds of formulas I (R1W3 are alkyl) and II (R4W6 are H or alkyl, provided that at least one of which is H), to obtain a polyester. The equivalent ratio of the sum of the phosphorus compounds to the sum of the Li and the Ca compounds is 1W3 to 1. The average acid value of the phosphorus compounds (a value obtained by dividing the total molar number of the acidic OH group attached to the P atom of the compound II with the total molar number of the P atom of the compounds I and II), is adjusted between 0.001 and 1.5.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12241878A JPS5550023A (en) | 1978-10-04 | 1978-10-04 | Preparation of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12241878A JPS5550023A (en) | 1978-10-04 | 1978-10-04 | Preparation of polyester |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5550023A true JPS5550023A (en) | 1980-04-11 |
JPS6253533B2 JPS6253533B2 (en) | 1987-11-11 |
Family
ID=14835326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12241878A Granted JPS5550023A (en) | 1978-10-04 | 1978-10-04 | Preparation of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5550023A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5968325A (en) * | 1982-10-14 | 1984-04-18 | Teijin Ltd | Polyester film and its production |
US4561888A (en) * | 1982-11-02 | 1985-12-31 | Kabushiki Kaisha Kobe Seiko Sho | Welding wire for use in submerged arc welding of Cr-Mo steels |
JPS6143624A (en) * | 1984-08-08 | 1986-03-03 | Teijin Ltd | Molded thin layer article of polyester |
JPS61189215A (en) * | 1985-02-18 | 1986-08-22 | Teijin Ltd | Oily pharmaceutical composition of 5-fluoro-2'-deoxyuridine ester |
-
1978
- 1978-10-04 JP JP12241878A patent/JPS5550023A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5968325A (en) * | 1982-10-14 | 1984-04-18 | Teijin Ltd | Polyester film and its production |
US4561888A (en) * | 1982-11-02 | 1985-12-31 | Kabushiki Kaisha Kobe Seiko Sho | Welding wire for use in submerged arc welding of Cr-Mo steels |
JPS6143624A (en) * | 1984-08-08 | 1986-03-03 | Teijin Ltd | Molded thin layer article of polyester |
JPS61189215A (en) * | 1985-02-18 | 1986-08-22 | Teijin Ltd | Oily pharmaceutical composition of 5-fluoro-2'-deoxyuridine ester |
JPH0434964B2 (en) * | 1985-02-18 | 1992-06-09 | Teijin Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6253533B2 (en) | 1987-11-11 |
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