JPS578222A - Production of low terminal-carboxyl content polyester - Google Patents
Production of low terminal-carboxyl content polyesterInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01164628U (en) * | 1988-05-06 | 1989-11-16 |
-
1980
- 1980-06-18 JP JP8130580A patent/JPS578222A/en active Granted
Cited By (3)
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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