KR970010818A - Improved method of making polyester - Google Patents

Improved method of making polyester Download PDF

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Publication number
KR970010818A
KR970010818A KR1019950024301A KR19950024301A KR970010818A KR 970010818 A KR970010818 A KR 970010818A KR 1019950024301 A KR1019950024301 A KR 1019950024301A KR 19950024301 A KR19950024301 A KR 19950024301A KR 970010818 A KR970010818 A KR 970010818A
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KR
South Korea
Prior art keywords
column
transesterification
heat exchanger
methanol
improved method
Prior art date
Application number
KR1019950024301A
Other languages
Korean (ko)
Other versions
KR100192079B1 (en
Inventor
김남일
정성일
이영진
Original Assignee
안시환
주식회사 에스케이씨
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 안시환, 주식회사 에스케이씨 filed Critical 안시환
Priority to KR1019950024301A priority Critical patent/KR100192079B1/en
Publication of KR970010818A publication Critical patent/KR970010818A/en
Application granted granted Critical
Publication of KR100192079B1 publication Critical patent/KR100192079B1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78—Preparation processes
    • C08G63/785—Preparation processes characterised by the apparatus used
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16—Dicarboxylic acids and dihydroxy compounds
    • C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/181—Acids containing aromatic rings
    • C08G63/183—Terephthalic acids

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

본 발명은 폴리에스테르를 제조하는 개선된 방법에 관한 것으로, 폴리에스테르 특히 디메틸테레프탈레이트와 에틸렌글리콜로부터 에스테르 교환반응 및 중축합 공정을 거쳐 폴리에틸렌테레프탈레이트를 제조하는 데 있어서, 열교환 영역 및 물질전달 영역으로 이루어진 컬럼을 에스테르 교환반응 시스템에 적용하여 에스테르 교환반응에서 생성되는 메탄올과 에틸렌글리콜의 증기를 통과시킴으로서, 메탄올이 효과적으로 분리되어 반응계로 재환류되지 않아 부반응이 억제되며 반응시간이 단축된다.FIELD OF THE INVENTION The present invention relates to an improved process for the production of polyesters. By applying the formed column to the transesterification system and passing the vapor of methanol and ethylene glycol produced in the transesterification reaction, methanol is effectively separated and refluxed to the reaction system to prevent side reactions and the reaction time is shortened.

Description

개선된 폴리에스테르의 제조방법Improved method of making polyester

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (5)

디메틸테레프탈레이트와 디올로부터 에스테르 교환반응 및 중축합 공정을 거쳐 폴리에스테르를 제조하는 데 있어서, 열교환 영역 및 물질전달 영역으로 이루어진 컬럼을 에스테르 교환반응 시스템에 적용하여 에스테르 교환반응에서 생성되는 메탄올과 에틸렌글리콜의 증기를 통과시키는 것을 특징으로 하는 폴리에스테르의 제조방법.In preparing polyester from dimethyl terephthalate and diol through transesterification and polycondensation, methanol and ethylene glycol produced in the transesterification reaction by applying a column consisting of a heat exchange zone and a mass transfer zone to a transesterification system Method for producing a polyester, characterized in that passing through the steam. 제1항에 있어서, 상기 열교환 영역으로 열교환기를 사용하는 것을 특징으로 하는 방법.The method of claim 1 wherein a heat exchanger is used as the heat exchange zone. 제1항에 있어서, 상기 물질전달 영역으로 패키드 컬럼(packed column) 또는 트레이 컬럼(tray column)을 사용하는 것을 특징으로 하는 방법.The method of claim 1, wherein a packed column or a tray column is used as the mass transfer region. 제1항에 있어서, 상기 열교환기와 컬럼을 일체식으로 설치하는 것을 특징으로 하는 방법.The method according to claim 1, wherein the heat exchanger and the column are integrally installed. 제1항에 있어서, 상기 열교환기와 컬럼을 분리하여 설치하는 것을 특징으로 하는 방법.The method of claim 1, wherein the heat exchanger and the column are installed separately. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950024301A 1995-08-07 1995-08-07 Process for preparing modified polyester KR100192079B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950024301A KR100192079B1 (en) 1995-08-07 1995-08-07 Process for preparing modified polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950024301A KR100192079B1 (en) 1995-08-07 1995-08-07 Process for preparing modified polyester

Publications (2)

Publication Number Publication Date
KR970010818A true KR970010818A (en) 1997-03-27
KR100192079B1 KR100192079B1 (en) 1999-06-15

Family

ID=19423011

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950024301A KR100192079B1 (en) 1995-08-07 1995-08-07 Process for preparing modified polyester

Country Status (1)

Country Link
KR (1) KR100192079B1 (en)

Also Published As

Publication number Publication date
KR100192079B1 (en) 1999-06-15

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