JPS5523142A - Preparation of polyester - Google Patents

Preparation of polyester

Info

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
Application number
JP9595878A
Other languages
Japanese (ja)
Other versions
JPS608008B2 (en
Inventor
Masaji Watanabe
Seiji Sakamoto
Kazuo Endo
Satoshi Otonari
Yoshio Meguro
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 JP9595878A priority Critical patent/JPS608008B2/en
Publication of JPS5523142A publication Critical patent/JPS5523142A/en
Publication of JPS608008B2 publication Critical patent/JPS608008B2/en
Expired legal-status Critical Current

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
JP9595878A 1978-08-07 1978-08-07 Polyester manufacturing method Expired JPS608008B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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