JPS5620027A - Production of polyester - Google Patents

Production of polyester

Info

Publication number
JPS5620027A
JPS5620027A JP9692079A JP9692079A JPS5620027A JP S5620027 A JPS5620027 A JP S5620027A JP 9692079 A JP9692079 A JP 9692079A JP 9692079 A JP9692079 A JP 9692079A JP S5620027 A JPS5620027 A JP S5620027A
Authority
JP
Japan
Prior art keywords
compound
ethylene glycol
terephthalic acid
polycondensing
consisting mainly
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.)
Pending
Application number
JP9692079A
Other languages
Japanese (ja)
Inventor
Yasuhiro Tokiyama
Nobuhiro Matsunaga
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.)
Nippon Ester Co Ltd
Original Assignee
Nippon Ester 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 Nippon Ester Co Ltd filed Critical Nippon Ester Co Ltd
Priority to JP9692079A priority Critical patent/JPS5620027A/en
Publication of JPS5620027A publication Critical patent/JPS5620027A/en
Pending legal-status Critical Current

Links

Landscapes

  • Polyesters Or Polycarbonates (AREA)

Abstract

PURPOSE: To accelerate the polycondensation and thereby to obtain a colorless, high polymerization degree polyester within a short time, by allowing a trivial amount of an Nb compound to be present, in polycondensing terephthalic acid with ethylene glycol by using an Sb compound etc. as a catalyst.
CONSTITUTION: The product of the purpose is obtained by polycondensing (i) terephthalic acid, bifunctional carboxylic acids consisting mainly of terephthalic acid or an esterifiable derivative thereof, with (ii) ethylene glycol or glycols consisting mainly of ethylene glycol, in the presence of (iii) at least one catalyst selected from an Sb compound such as antimony trioxide, a Ge compound such as germanium ethoxide and a Zn compound such as zinc formate and (iv) an ethylene glycol- soluble Nb compound such as niobium chloride or niobium oxalate, in an amount of 0.005×10-4W0.1×10-4mol per mol of component (i).
COPYRIGHT: (C)1981,JPO&Japio
JP9692079A 1979-07-30 1979-07-30 Production of polyester Pending JPS5620027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9692079A JPS5620027A (en) 1979-07-30 1979-07-30 Production of polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9692079A JPS5620027A (en) 1979-07-30 1979-07-30 Production of polyester

Publications (1)

Publication Number Publication Date
JPS5620027A true JPS5620027A (en) 1981-02-25

Family

ID=14177786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9692079A Pending JPS5620027A (en) 1979-07-30 1979-07-30 Production of polyester

Country Status (1)

Country Link
JP (1) JPS5620027A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60160852U (en) * 1984-04-02 1985-10-25 ニツタン株式会社 Short pipe for sprinkler head mounting socket
JPS6383126A (en) * 1986-09-26 1988-04-13 Kanebo Ltd Production of polyester

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60160852U (en) * 1984-04-02 1985-10-25 ニツタン株式会社 Short pipe for sprinkler head mounting socket
JPH025801Y2 (en) * 1984-04-02 1990-02-13
JPS6383126A (en) * 1986-09-26 1988-04-13 Kanebo Ltd Production of polyester

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