JPS56110720A - Preparation of polyester of high polymerization degree - Google Patents

Preparation of polyester of high polymerization degree

Info

Publication number
JPS56110720A
JPS56110720A JP1299380A JP1299380A JPS56110720A JP S56110720 A JPS56110720 A JP S56110720A JP 1299380 A JP1299380 A JP 1299380A JP 1299380 A JP1299380 A JP 1299380A JP S56110720 A JPS56110720 A JP S56110720A
Authority
JP
Japan
Prior art keywords
polyester
formula
polymerization degree
high polymerization
bisoxazoline
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
JP1299380A
Other languages
Japanese (ja)
Inventor
Nobuya Okumura
Takamasa Asano
Takatoshi Kuratsuji
Satoshi Hashimoto
Yasu Tsukiyama
Shigeru Horie
Tetsuo Ichihashi
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 JP1299380A priority Critical patent/JPS56110720A/en
Publication of JPS56110720A publication Critical patent/JPS56110720A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prepare a polyester of high polymerization degree, having few terminal carboxyl groups, in a short time, by the reaction of a powdered saturated polyester with a bisoxazoline at a temperature below the melting point of the polyester.
CONSTITUTION: A powdered saturated polyester is reacted with 0.1W10wt%, based on the polyester, bisoxazoline of the formula (wherein R1WR8 are H or monovalent organic group; D is a bivalent organic group; n is 0.1), at a temperature below the melting point of said polyester. An aromatic dicarboxylic acid, particularly therephthalic acid is preferable as an acid component which constitutes the saturated polyester, and ethylene glycol or tetramethylene glycol is particularly preferable as a glycol component. The bisoxyazoline of the formula is particularly preferably one of the formula, where n is 0.
COPYRIGHT: (C)1981,JPO&Japio
JP1299380A 1980-02-07 1980-02-07 Preparation of polyester of high polymerization degree Pending JPS56110720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1299380A JPS56110720A (en) 1980-02-07 1980-02-07 Preparation of polyester of high polymerization degree

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1299380A JPS56110720A (en) 1980-02-07 1980-02-07 Preparation of polyester of high polymerization degree

Publications (1)

Publication Number Publication Date
JPS56110720A true JPS56110720A (en) 1981-09-02

Family

ID=11820723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1299380A Pending JPS56110720A (en) 1980-02-07 1980-02-07 Preparation of polyester of high polymerization degree

Country Status (1)

Country Link
JP (1) JPS56110720A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6399228A (en) * 1986-06-23 1988-04-30 Teijin Ltd Production of polyester having high polymerization degree
WO1996025448A1 (en) * 1995-02-16 1996-08-22 Basf Aktiengesellschaft Biodegradable polymers, process for producing them and their use in preparing biodegradable mouldings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6399228A (en) * 1986-06-23 1988-04-30 Teijin Ltd Production of polyester having high polymerization degree
WO1996025448A1 (en) * 1995-02-16 1996-08-22 Basf Aktiengesellschaft Biodegradable polymers, process for producing them and their use in preparing biodegradable mouldings
WO1996025446A1 (en) * 1995-02-16 1996-08-22 Basf Aktiengesellschaft Biodegradable polymers, process for producing them and their use in preparing biodegradable mouldings

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