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KR920701191A - 색채가 개선된 트리멜리트산 무수물의 제조방법 - Google Patents

색채가 개선된 트리멜리트산 무수물의 제조방법

Info

Publication number
KR920701191A
KR920701191A KR1019910700400A KR910700400A KR920701191A KR 920701191 A KR920701191 A KR 920701191A KR 1019910700400 A KR1019910700400 A KR 1019910700400A KR 910700400 A KR910700400 A KR 910700400A KR 920701191 A KR920701191 A KR 920701191A
Authority
KR
South Korea
Prior art keywords
trimellitic anhydride
temperature
delta
boron oxide
color level
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.)
Withdrawn
Application number
KR1019910700400A
Other languages
English (en)
Inventor
박 창-만
Original Assignee
랄프 챨스 메드허스트
아모코 코포레이션
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 랄프 챨스 메드허스트, 아모코 코포레이션 filed Critical 랄프 챨스 메드허스트
Publication of KR920701191A publication Critical patent/KR920701191A/ko
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/87—Benzo [c] furans; Hydrogenated benzo [c] furans
    • C07D307/89—Benzo [c] furans; Hydrogenated benzo [c] furans with two oxygen atoms directly attached in positions 1 and 3
    • 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
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/16—Polyester-imides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/573—Separation; Purification; Stabilisation; Use of additives
    • 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
    • C08G63/20—Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Optical Filters (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Furan Compounds (AREA)

Abstract

내용 없음.

Description

색채가 개선된 트리멜리트산 무수물의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (6)

  1. 델타E가 약 1.5이상인 색채 수준의 트리멜리트산 무수물을, 트리멜리트산 무수물 중량의 0.1%이상인 처리농도의 붕소 산화물 또는 수화된 붕소 산화물 존재하에서 약 200 내지 약 300℃의 온도에서 열처리한후, 약 200 내지 약 275℃의 온도 및 약 60mmHg미만의 압력하에서 분별 증류시킴을 특징으로 하여, 델타 E가 약 1.5미만인 색채수준을 지닌 트리멜리트산 무수물을 제조하는 방법.
  2. 제1항에 있어서, 압력이 약 1 내지 25mmHg 이내인 방법.
  3. 제1항에 있어서, 열처리를 약 230 내지 약 275℃의 온도에서 수행하는 방법.
  4. 제1항에 있어서, 열처리를 약 250 내지 약 275℃의 온도에서 수행하고, 붕소 산화물 또는 수화된 붕소 산화물의 처리 농도가 트리멜리트산 무수물의 0.25 내지 0.75중량%인 방법.
  5. 제1항에 있어서, 열처리를 붕산의 존재하에서 수행하는 방법.
  6. 제1항에 있어서, 델타E가 약 0.71 내지 약 1.50인 색채 수준을 지닌 트리멜리트산 무수물을 약 200 내지 약 300℃의 온도에서 열처리하여 델타E가 0.71미만인 색체 수준을 지닌 트리멜리트산 무수물을 제조함을 특징으로 하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
KR1019910700400A 1989-08-22 1990-08-02 색채가 개선된 트리멜리트산 무수물의 제조방법 Withdrawn KR920701191A (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US39685289A 1989-08-22 1989-08-22
PCT/US1990/004336 WO1991002729A1 (en) 1989-08-22 1990-08-02 Process for the production of trimellitic anhydride with improved color
US396852 1995-03-01

Publications (1)

Publication Number Publication Date
KR920701191A true KR920701191A (ko) 1992-08-11

Family

ID=23568884

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910700400A Withdrawn KR920701191A (ko) 1989-08-22 1990-08-02 색채가 개선된 트리멜리트산 무수물의 제조방법

Country Status (5)

Country Link
EP (1) EP0439578B1 (ko)
JP (1) JPH04501271A (ko)
KR (1) KR920701191A (ko)
DE (1) DE69015796T2 (ko)
WO (1) WO1991002729A1 (ko)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2072656B (en) * 1980-03-31 1984-05-23 Boc Ltd Purification of arganic compounds
FI67229C (fi) * 1982-08-17 1985-02-11 Oulu Oy Foerfarande foer att foerbaettra faergen och faergstabilitetenhos en karboxylsyra eller dess blandning

Also Published As

Publication number Publication date
DE69015796T2 (de) 1995-06-01
EP0439578A1 (en) 1991-08-07
WO1991002729A1 (en) 1991-03-07
EP0439578A4 (en) 1992-01-15
DE69015796D1 (de) 1995-02-16
JPH04501271A (ja) 1992-03-05
EP0439578B1 (en) 1995-01-04

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Legal Events

Date Code Title Description
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19910422

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid