BR9910225A - Processos para purificar e para preparar ácido isoftálico - Google Patents

Processos para purificar e para preparar ácido isoftálico

Info

Publication number
BR9910225A
BR9910225A BR9910225-0A BR9910225A BR9910225A BR 9910225 A BR9910225 A BR 9910225A BR 9910225 A BR9910225 A BR 9910225A BR 9910225 A BR9910225 A BR 9910225A
Authority
BR
Brazil
Prior art keywords
ipa
solution
crystallization solvent
purifying
isophthalic acid
Prior art date
Application number
BR9910225-0A
Other languages
English (en)
Inventor
Fu-Ming Lee
Wiston Lamshing
Randi Wright Wytcherley
Original Assignee
Hfm Int Inc
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 Hfm Int Inc filed Critical Hfm Int Inc
Publication of BR9910225A publication Critical patent/BR9910225A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

"PROCESSOS PARA PURIFICAR E PARA PREPARAR áCIDO ISOFTáLICO" Descreve-se um processo para preparar ácido isoftálico a partir de metaxileno e especialmente para purificar ácido isoftálico em bruto (IPA) produzido no curso deste processo, ou de outra forma, a partir de uma dispersão líquida do mesmo também contendo impurezas selecionadas dentre materiais de partida não reagidos, solventes, produtos de reações laterais e/ou outros materiais indesejados. A porção de purificação do processo compreende a etapa de: (1) filtrar a dispersão para formar uma torta de filtro IPA bruta; (2) dissolver a torta de filtro em um solvente de cristalização seletivo em uma temperatura elevada para formar uma solução; (3) cristalizar IPA purificado da solução no solvente de cristalização por redução da temperatura, ou pressão, ou ambos da solução, (4) separar o IPA purificado cristalizado da solução; e (5) re-dissolver ou embeber a torta de IPA purificado lavado em temperatura elevada, para remover os traços finais do solvente de cristalização e obter a forma e tamanhos de partículas desejáveis. Preferivelmente, o solvente de cristalização seletivo é N-metil pirrolidona.
BR9910225-0A 1998-05-06 1999-04-20 Processos para purificar e para preparar ácido isoftálico BR9910225A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8442698P 1998-05-06 1998-05-06
US09/229,789 US6140534A (en) 1995-06-07 1999-01-13 Method for purifying isophthalic acid prepared from metaxylene
PCT/US1999/008800 WO1999057090A1 (en) 1998-05-06 1999-04-20 Process for purifying isophthalic acid by crystallization

Publications (1)

Publication Number Publication Date
BR9910225A true BR9910225A (pt) 2001-10-02

Family

ID=26770970

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9910225-0A BR9910225A (pt) 1998-05-06 1999-04-20 Processos para purificar e para preparar ácido isoftálico

Country Status (15)

Country Link
US (1) US6140534A (pt)
EP (1) EP1075458B1 (pt)
KR (1) KR100552261B1 (pt)
CN (1) CN1231447C (pt)
AU (1) AU3865199A (pt)
BR (1) BR9910225A (pt)
CA (1) CA2331805A1 (pt)
DE (1) DE69908933T2 (pt)
ES (1) ES2201713T3 (pt)
ID (1) ID28144A (pt)
IL (1) IL139499A0 (pt)
RU (1) RU2208606C2 (pt)
TR (1) TR200100161T2 (pt)
TW (1) TW514635B (pt)
WO (1) WO1999057090A1 (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000232653A (ja) 1999-02-08 2000-08-22 Fuji Photo Film Co Ltd 撮影装置
BRPI0509733A (pt) * 2004-04-09 2007-09-25 Gtc Technology Inc métodos para purificar um ácido carboxìlico a partir de uma mistura, para recuperar o ácido tereftálico purificado a partir do efluente de um processo de produção de ácido tereftálico e para oxidar 4-carboxibenzaldeìdo e/ou o 3-carboxibenzaldeìdo
US20050288527A1 (en) * 2004-06-28 2005-12-29 Cook William L Method for preparing free-flowing crystalline material
KR100952829B1 (ko) 2008-11-06 2010-04-15 한국에너지기술연구원 다단 추출에 의한 이소프탈산 정제 장치 및 방법
RU2458042C2 (ru) * 2010-03-01 2012-08-10 Общество с ограниченной ответственностью "НИПИМ-Новые химические технологии" (ООО "НИПИМ-НХИМТЕХ") Способ получения и очистки изофталевой кислоты
CN102992999B (zh) * 2011-09-17 2014-08-27 中国石油化工股份有限公司 精间苯二甲酸装置氧化单元粗间苯二甲酸“过滤、洗涤”套洗方法
CN103121939B (zh) * 2011-11-18 2015-10-21 中国石油化工股份有限公司 粗间苯二甲酸加氢精制反应原料的制备方法
CN103121943B (zh) * 2011-11-18 2015-08-12 中国石油化工股份有限公司 提纯粗间苯二甲酸氧化浆料的方法
CN109485557A (zh) * 2018-12-18 2019-03-19 华东理工大学 一种间苯二甲酸的制备工艺
CN109369374A (zh) * 2018-12-18 2019-02-22 华东理工大学 一种间苯二甲酸的精制方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949483A (en) * 1954-07-30 1960-08-16 Chemstrand Corp Method of purifying aromatic dicarboxylic acids
US5110984A (en) * 1990-11-06 1992-05-05 Amoco Corporation Process for increasing the yield of purified isophthalic acid and reducing waste-water treatment a
US5767311A (en) * 1995-06-07 1998-06-16 Glitsch International, Inc. Method and apparatus for preparing purified terephtalic acid
JP3757995B2 (ja) * 1996-07-12 2006-03-22 三菱瓦斯化学株式会社 高純度イソフタル酸の製造方法

Also Published As

Publication number Publication date
AU3865199A (en) 1999-11-23
TW514635B (en) 2002-12-21
CN1231447C (zh) 2005-12-14
US6140534A (en) 2000-10-31
EP1075458B1 (en) 2003-06-18
WO1999057090A1 (en) 1999-11-11
DE69908933T2 (de) 2004-04-22
KR20010043372A (ko) 2001-05-25
ES2201713T3 (es) 2004-03-16
TR200100161T2 (tr) 2001-05-21
DE69908933D1 (de) 2003-07-24
KR100552261B1 (ko) 2006-02-20
ID28144A (id) 2001-05-10
CN1308601A (zh) 2001-08-15
RU2208606C2 (ru) 2003-07-20
EP1075458A1 (en) 2001-02-14
CA2331805A1 (en) 1999-11-11
IL139499A0 (en) 2001-11-25

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 6A, 7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1911 DE 21/08/2007.