JPS578222A - Production of low terminal-carboxyl content polyester - Google Patents

Production of low terminal-carboxyl content polyester

Info

Publication number
JPS578222A
JPS578222A JP8130580A JP8130580A JPS578222A JP S578222 A JPS578222 A JP S578222A JP 8130580 A JP8130580 A JP 8130580A JP 8130580 A JP8130580 A JP 8130580A JP S578222 A JPS578222 A JP S578222A
Authority
JP
Japan
Prior art keywords
compound
polyester
organic group
carboxyl content
low terminal
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
JP8130580A
Other languages
Japanese (ja)
Other versions
JPS6148532B2 (en
Inventor
Shunichi Matsumura
Hiroo Inada
Tsutou Morinaga
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP8130580A priority Critical patent/JPS578222A/en
Priority to DE8080107518T priority patent/DE3069425D1/en
Priority to EP80107518A priority patent/EP0030350B1/en
Priority to US06/213,051 priority patent/US4351936A/en
Publication of JPS578222A publication Critical patent/JPS578222A/en
Publication of JPS6148532B2 publication Critical patent/JPS6148532B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a low terminal-carboxyl content polyester within a short time without coloration, by reacting a linear saturated polyester with a specified substituted oxyoxazoline compound or a substituted oxyoxazine compound.
CONSTITUTION: A low terminal-carboxyl content polyester is prepared by reacting (i) 100pts.wt. linear saturated polyester with (ii) 0.1W5pts.wt. compound of formula I, wherein R is a monovalent organic group, X is a bivalent organic group and the ring structure of formula II is a five or six-membered ring, e.g., 2-methoxy- 5,6-dihydro-4H,1,3-oxazine, 2-methoxy-2-oxazoline, under conditions under which the polyester is in the molten state. Compound ii can be prepared by simultaneously dehydrohalogenating and cyclizing a compound of formula III, wherein R' is a monovalent organic group, X' is a bivalent organic group and Y is Cl or Br, with NaOH or KOH.
COPYRIGHT: (C)1982,JPO&Japio
JP8130580A 1979-12-05 1980-06-18 Production of low terminal-carboxyl content polyester Granted JPS578222A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8130580A JPS578222A (en) 1980-06-18 1980-06-18 Production of low terminal-carboxyl content polyester
DE8080107518T DE3069425D1 (en) 1979-12-05 1980-12-02 Method for reducing the terminal carboxyl group content of a saturated polyester, a saturated polyester having a reduced terminal carboxyl group content, and a molded article composed of such a saturated polyester
EP80107518A EP0030350B1 (en) 1979-12-05 1980-12-02 Method for reducing the terminal carboxyl group content of a saturated polyester, a saturated polyester having a reduced terminal carboxyl group content, and a molded article composed of such a saturated polyester
US06/213,051 US4351936A (en) 1979-12-05 1980-12-04 Method for reducing the terminal carboxyl group content of a saturated polyester, a saturated polyester having a reduced terminal carboxyl group content, and a molded article composed of such a saturated polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8130580A JPS578222A (en) 1980-06-18 1980-06-18 Production of low terminal-carboxyl content polyester

Publications (2)

Publication Number Publication Date
JPS578222A true JPS578222A (en) 1982-01-16
JPS6148532B2 JPS6148532B2 (en) 1986-10-24

Family

ID=13742675

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8130580A Granted JPS578222A (en) 1979-12-05 1980-06-18 Production of low terminal-carboxyl content polyester

Country Status (1)

Country Link
JP (1) JPS578222A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105025A (en) * 1982-12-07 1984-06-18 Unitika Ltd Production of heat-resistant polyester
EP2719529A1 (en) 2012-10-10 2014-04-16 Armacell Enterprise GmbH Prevention of depolymerization of polyalkylene terephthalate in laminated structures

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01164628U (en) * 1988-05-06 1989-11-16

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105025A (en) * 1982-12-07 1984-06-18 Unitika Ltd Production of heat-resistant polyester
JPH0333174B2 (en) * 1982-12-07 1991-05-16 Unitika Ltd
EP2719529A1 (en) 2012-10-10 2014-04-16 Armacell Enterprise GmbH Prevention of depolymerization of polyalkylene terephthalate in laminated structures

Also Published As

Publication number Publication date
JPS6148532B2 (en) 1986-10-24

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