JPS5767629A - Preparation of polyester - Google Patents

Preparation of polyester

Info

Publication number
JPS5767629A
JPS5767629A JP14287280A JP14287280A JPS5767629A JP S5767629 A JPS5767629 A JP S5767629A JP 14287280 A JP14287280 A JP 14287280A JP 14287280 A JP14287280 A JP 14287280A JP S5767629 A JPS5767629 A JP S5767629A
Authority
JP
Japan
Prior art keywords
raw material
temperature
catalyst
melting point
lower alkyl
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
JP14287280A
Other languages
Japanese (ja)
Inventor
Takatoshi Kuratsuji
Satoshi Hashimoto
Takamasa Asano
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 JP14287280A priority Critical patent/JPS5767629A/en
Publication of JPS5767629A publication Critical patent/JPS5767629A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To carry out the melt polymerization of a polyester, in high efficiency, using a raw material containing water and decomposable components, by keeping at least a part of the raw material in the absence of a catalyst at a temperature between the melting point and the decomposition temperature of the raw material.
CONSTITUTION: A dicarboxylic acid lower alkyl ester (e.g. dimethyl sebacate) and a glycol (e.g. hexamethylene glycol), or an oxycarboxylic acid lower alkyl ester (e.g. hydroxyethoxybenzoic acid) are charged in a reactor as the raw materials, and heated at a temperature at or above the melting point and below the decomposition temperature of the raw material (e.g. 120W145°C) under inert gas stream for a definite time interval to distill off at least a part of the low-boiling component such as water or the decomposition product in the raw material. After the treatment, the raw material are subjected to the melt polymerization in the presence of a catalyst (e.g. tetrabutyl titanate).
COPYRIGHT: (C)1982,JPO&Japio
JP14287280A 1980-10-15 1980-10-15 Preparation of polyester Pending JPS5767629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14287280A JPS5767629A (en) 1980-10-15 1980-10-15 Preparation of polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14287280A JPS5767629A (en) 1980-10-15 1980-10-15 Preparation of polyester

Publications (1)

Publication Number Publication Date
JPS5767629A true JPS5767629A (en) 1982-04-24

Family

ID=15325553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14287280A Pending JPS5767629A (en) 1980-10-15 1980-10-15 Preparation of polyester

Country Status (1)

Country Link
JP (1) JPS5767629A (en)

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