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JPS5630428A - Preparation of copolymerized polyester - Google Patents

Preparation of copolymerized polyester

Info

Publication number
JPS5630428A
JPS5630428A JP10496179A JP10496179A JPS5630428A JP S5630428 A JPS5630428 A JP S5630428A JP 10496179 A JP10496179 A JP 10496179A JP 10496179 A JP10496179 A JP 10496179A JP S5630428 A JPS5630428 A JP S5630428A
Authority
JP
Japan
Prior art keywords
dicarboxylic acid
diphenyl
copolymerized polyester
aromatic dicarboxylic
slurry
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
JP10496179A
Other languages
Japanese (ja)
Other versions
JPS6245251B2 (en
Inventor
Shunei Inoue
Hiroshi Iida
Masakata Yanagi
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP10496179A priority Critical patent/JPS5630428A/en
Publication of JPS5630428A publication Critical patent/JPS5630428A/en
Publication of JPS6245251B2 publication Critical patent/JPS6245251B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Polyesters Or Polycarbonates (AREA)

Abstract

PURPOSE: To efficiently obtain a copolymerized polyester of diphenyl-4,4'-dicarboxylic acid, excellent in melt moldability, by conducting estrification, before polycondensation, in the presence of an esterification product preliminarily prepared.
CONSTITUTION: A copolymerized polyester containing 20W80mol% of ethylene diphenyl-4,4'-dicarboxylate unit is prepared by means of estreification, which is carried out by continuously or intermittently feeding a slurry, obtained by the admixture of an aromatic dicarboxylic acid, containing 20W100mol% of diphenyl- 4,4'-dicarboxylic acid, with at least an equal mol, to said aromatic dicarboxylic acid, of ethylene glycol, into a system, preliminarily containing at least 25wt%, based on the total dicarboxylic acid in said slurry, of an esterification product and/or an ester exchange product, composed of an aromatic dicarboxylic acid, containing 0W80mol% of diphenyl-4,4'-dicarboxylic acid or its ester-forming derivative, and of ethylene glycol, followed by polycondensation.
COPYRIGHT: (C)1981,JPO&Japio
JP10496179A 1979-08-20 1979-08-20 Preparation of copolymerized polyester Granted JPS5630428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10496179A JPS5630428A (en) 1979-08-20 1979-08-20 Preparation of copolymerized polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10496179A JPS5630428A (en) 1979-08-20 1979-08-20 Preparation of copolymerized polyester

Publications (2)

Publication Number Publication Date
JPS5630428A true JPS5630428A (en) 1981-03-27
JPS6245251B2 JPS6245251B2 (en) 1987-09-25

Family

ID=14394688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10496179A Granted JPS5630428A (en) 1979-08-20 1979-08-20 Preparation of copolymerized polyester

Country Status (1)

Country Link
JP (1) JPS5630428A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0589253U (en) * 1992-05-25 1993-12-07 株式会社柴崎製作所 Synthetic resin cap with hidden display

Also Published As

Publication number Publication date
JPS6245251B2 (en) 1987-09-25

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