JPS56149425A - Preparation of polyester containing little carboxyl end-group - Google Patents

Preparation of polyester containing little carboxyl end-group

Info

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
Application number
JP5178480A
Other languages
Japanese (ja)
Other versions
JPS6148531B2 (en
Inventor
Shunichi Matsumura
Hiroo Inada
Tsutae 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 JP5178480A priority Critical patent/JPS56149425A/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 JPS56149425A publication Critical patent/JPS56149425A/en
Publication of JPS6148531B2 publication Critical patent/JPS6148531B2/ja
Granted legal-status Critical Current

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
JP5178480A 1979-12-05 1980-04-21 Preparation of polyester containing little carboxyl end-group Granted JPS56149425A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936129A (en) * 1982-08-23 1984-02-28 Teijin Ltd Magnetic recording item

Cited By (2)

* Cited by examiner, † Cited by third party
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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