KR950018126A

KR950018126A - Method for producing aliphatic polyester

Info

Publication number: KR950018126A
Application number: KR1019930026540A
Authority: KR
Inventors: 임대우; 백문수; 이영춘
Original assignee: 박흥기; 제일합섬 주식회사
Priority date: 1993-12-06
Filing date: 1993-12-06
Publication date: 1995-07-22

Abstract

본 발명은 지방족 디카르본산과 지방족 2가 글리콜류 및 폴리(알킬렌옥사이드)글리콜류를 에스테르화 반응시키고 일반식(Ⅲ)으로 표현되는 가소제를 투입하여 감압하에서 중합시킴을 특징으로 하는 하기 일반식(I) 및 (Ⅱ)의 단위체를 주반복 단위로 하는 폴리에스테르의 제조방법에 관한 것이다.The present invention is characterized by esterification of aliphatic dicarboxylic acid, aliphatic divalent glycols and poly (alkylene oxide) glycols and polymerization under reduced pressure by adding a plasticizer represented by formula (III). The manufacturing method of the polyester which has the unit of (I) and (II) as a main repeating unit.

여기에서, R¹은 탄소수 1∼14인 지방족 디카르본산으로부터 카르복실기가 제거된 2가의 라디칼이며, D는 분자량 250 이하인 짧은 고리 디올로부터 수산기가 제거된 2가의 라디칼이고, G는 분자량이 600∼8,000인 폴리(알킬렌옥사이드)글리콜로부터 수산기가 제거된 2가의 라디칼이다.Here, R ¹ is a divalent radical in which a carboxyl group has been removed from an aliphatic dicarboxylic acid having 1 to 14 carbon atoms, D is a divalent radical in which a hydroxyl group has been removed from a short ring diol having a molecular weight of 250 or less, and G has a molecular weight of 600 to 8,000. It is a bivalent radical from which the hydroxyl group was removed from phosphorus poly (alkylene oxide) glycol.

여기에서, X는 탄소수 1∼20인 지방족 또는 방향족 화합물이며, a와 b는 0∼5의 정수이되 a와 b의 합은 3∼6이다.X is an aliphatic or aromatic compound having 1 to 20 carbon atoms, a and b are integers of 0 to 5, and the sum of a and b is 3 to 6;

Description

Method for producing aliphatic polyester

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims

The following general formula (I) characterized by esterification of aliphatic dicarboxylic acid, aliphatic divalent glycols and poly (alkylene oxide) glycols and polymerization under reduced pressure by adding a plasticizer represented by formula (III). And a method for producing a polyester using the unit of (II) as the main repeating unit.

Wherein R ¹ is a divalent radical from which a carboxyl group has been removed from an aliphatic dicarboxylic acid having 1 to 14 carbon atoms, D is a divalent radical having a hydroxyl group removed from a short ring diol having a molecular weight of 250 or less, and G has a molecular weight of 600 It is a bivalent radical from which the hydroxyl group was removed from the poly (alkylene oxide) glycol of 8,000.

X is an aliphatic or aromatic compound having 1 to 20 carbon atoms, a and b are integers of 0 to 5, and the sum of a and b is 3 to 6;

The method of claim 1, wherein the poly (alkylene oxide) glycol is poly (ethylene oxide) glycol, poly (propylene oxide) glycol, poly (tetramethylene oxide) glycol, poly (hexamethylene oxide) glycol or poly (isopropylene oxide) Method for producing aliphatic polyester, characterized in that the glycol.

The method for preparing aliphatic polyester according to claim 3, wherein the amount of poly (alkylene oxide) glycol is added in an amount of 0.01 to 0.1 moles based on 1 mole of aliphatic dicarboxylic acid.

The method for preparing aliphatic polyester according to claim 1, wherein the crosslinking agent is administered at 0.001 to 0.1 moles based on 1 mole of aliphatic dicarboxylic acid.

※ Note: The disclosure is based on the initial application.