JPS5550024A - Preparation of polyester - Google Patents
Preparation of polyesterInfo
- Publication number
- JPS5550024A JPS5550024A JP12241978A JP12241978A JPS5550024A JP S5550024 A JPS5550024 A JP S5550024A JP 12241978 A JP12241978 A JP 12241978A JP 12241978 A JP12241978 A JP 12241978A JP S5550024 A JPS5550024 A JP S5550024A
- Authority
- JP
- Japan
- Prior art keywords
- phosphorus compounds
- alkyl
- compounds
- compound
- 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 compounds, 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 which is 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 Li compound 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 |
---|---|---|---|
JP12241978A JPS5550024A (en) | 1978-10-04 | 1978-10-04 | Preparation of polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12241978A JPS5550024A (en) | 1978-10-04 | 1978-10-04 | Preparation of polyester |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5550024A true JPS5550024A (en) | 1980-04-11 |
JPS6328926B2 JPS6328926B2 (en) | 1988-06-10 |
Family
ID=14835352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12241978A Granted JPS5550024A (en) | 1978-10-04 | 1978-10-04 | Preparation of polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5550024A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4861556A (en) * | 1971-12-04 | 1973-08-29 | ||
JPS5098597A (en) * | 1973-12-28 | 1975-08-05 |
-
1978
- 1978-10-04 JP JP12241978A patent/JPS5550024A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4861556A (en) * | 1971-12-04 | 1973-08-29 | ||
JPS5098597A (en) * | 1973-12-28 | 1975-08-05 |
Also Published As
Publication number | Publication date |
---|---|
JPS6328926B2 (en) | 1988-06-10 |
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