JPS5550024A - Preparation of polyester - Google Patents

Preparation of polyester

Info

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
Application number
JP12241978A
Other languages
Japanese (ja)
Other versions
JPS6328926B2 (en
Inventor
Masaji Watanabe
Seiji Sakamoto
Satoshi Otonari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diafoil Co Ltd
Original Assignee
Diafoil Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Diafoil Co Ltd filed Critical Diafoil Co Ltd
Priority to JP12241978A priority Critical patent/JPS5550024A/en
Publication of JPS5550024A publication Critical patent/JPS5550024A/en
Publication of JPS6328926B2 publication Critical patent/JPS6328926B2/ja
Granted legal-status Critical Current

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
JP12241978A 1978-10-04 1978-10-04 Preparation of polyester Granted JPS5550024A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4861556A (en) * 1971-12-04 1973-08-29
JPS5098597A (en) * 1973-12-28 1975-08-05

Patent Citations (2)

* Cited by examiner, † Cited by third party
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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