JPS56149425A - Preparation of polyester containing little carboxyl end-group - Google Patents
Preparation of polyester containing little carboxyl end-groupInfo
- Publication number
- JPS56149425A JPS56149425A JP5178480A JP5178480A JPS56149425A JP S56149425 A JPS56149425 A JP S56149425A JP 5178480 A JP5178480 A JP 5178480A JP 5178480 A JP5178480 A JP 5178480A JP S56149425 A JPS56149425 A JP S56149425A
- Authority
- JP
- Japan
- Prior art keywords
- group
- organic group
- carboxyl end
- containing little
- preparation
- 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
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
PURPOSE: To produce a polyester containing little carboxyl end-group and sparingly tinted, by reacting a linear saturated polyester with a specified compound.
CONSTITUTION: A linear saturated polyester having an ultimate viscosity ≥0.4, which has been produced by reacting an aromatic dicarboxylic acid reactant consisting chiefly of terephthalic acid with a glycol reactant containing 5W85wt% polyoxyalkylene glycol having a mean molecular weight of 500W5,000, is reacted with 0.1W 5wt% compound of formula I (where R1 is H or a monovalent organic group; R2 is a monovalent organic group; X is divalent organic group; formula II is of a 5- or 6- membered ring structure) under normal or reduced pressure at 150W320°C for 30secW60min.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5178480A JPS56149425A (en) | 1980-04-21 | 1980-04-21 | Preparation of polyester containing little carboxyl end-group |
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 |
---|---|---|---|
JP5178480A JPS56149425A (en) | 1980-04-21 | 1980-04-21 | Preparation of polyester containing little carboxyl end-group |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56149425A true JPS56149425A (en) | 1981-11-19 |
JPS6148531B2 JPS6148531B2 (en) | 1986-10-24 |
Family
ID=12896564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5178480A Granted JPS56149425A (en) | 1979-12-05 | 1980-04-21 | Preparation of polyester containing little carboxyl end-group |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56149425A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5936129A (en) * | 1982-08-23 | 1984-02-28 | Teijin Ltd | Magnetic recording item |
-
1980
- 1980-04-21 JP JP5178480A patent/JPS56149425A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5936129A (en) * | 1982-08-23 | 1984-02-28 | Teijin Ltd | Magnetic recording item |
JPH0321969B2 (en) * | 1982-08-23 | 1991-03-25 | Teijin Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6148531B2 (en) | 1986-10-24 |
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