IL139973A - Process for preparing purified terephthalic acid and isophthalic acid from mixed xylenes - Google Patents

Process for preparing purified terephthalic acid and isophthalic acid from mixed xylenes

Info

Publication number
IL139973A
IL139973A IL139973A IL13997300A IL139973A IL 139973 A IL139973 A IL 139973A IL 139973 A IL139973 A IL 139973A IL 13997300 A IL13997300 A IL 13997300A IL 139973 A IL139973 A IL 139973A
Authority
IL
Israel
Prior art keywords
tpa
solution
ipa
solvent
purified
Prior art date
Application number
IL139973A
Other languages
English (en)
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
Priority claimed from US09/097,930 external-priority patent/US6054610A/en
Priority claimed from PCT/US1999/010970 external-priority patent/WO1999062857A1/en
Application filed by Hfm Int Inc filed Critical Hfm Int Inc
Publication of IL139973A publication Critical patent/IL139973A/en

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)
IL139973A 1998-05-29 2000-11-28 Process for preparing purified terephthalic acid and isophthalic acid from mixed xylenes IL139973A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8714198P 1998-05-29 1998-05-29
US09/097,930 US6054610A (en) 1995-06-07 1998-06-16 Method and apparatus for preparing purified terephthalic acid and isophthalic acid from mixed xylenes
PCT/US1999/010970 WO1999062857A1 (en) 1998-05-29 1999-05-18 Method for preparing purified terephthalic acid and isophthalic acid from mixed xylenes

Publications (1)

Publication Number Publication Date
IL139973A true IL139973A (en) 2006-08-01

Family

ID=31990040

Family Applications (1)

Application Number Title Priority Date Filing Date
IL139973A IL139973A (en) 1998-05-29 2000-11-28 Process for preparing purified terephthalic acid and isophthalic acid from mixed xylenes

Country Status (3)

Country Link
JP (1) JP4817496B2 (ru)
IL (1) IL139973A (ru)
RU (1) RU2214391C2 (ru)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004217586A (ja) * 2003-01-16 2004-08-05 Mitsubishi Gas Chem Co Inc 芳香族ポリカルボン酸及び該酸無水物の製造方法
WO2006088470A2 (en) * 2004-04-09 2006-08-24 Gtc Technology Inc. Purification of carboxylic acids by complexation with selective solvents
KR20070099034A (ko) * 2005-02-25 2007-10-08 테바 파마슈티컬 인더스트리즈 리미티드 타달라필의 정제 방법
RU2496764C2 (ru) * 2008-03-18 2013-10-27 ДжиТиСи ТЕКНОЛОДЖИ, ЭлПи Способ (варианты) и системы получения изофталевой и терефталевой кислот
CN103298776B (zh) * 2010-10-26 2015-09-09 三菱瓦斯化学株式会社 使用陶瓷过滤器的交叉流方式的过滤操作方法
JP7354049B2 (ja) * 2015-09-18 2023-10-02 大日本印刷株式会社 積層体

Family Cites Families (3)

* 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
GB849189A (en) * 1958-03-26 1960-09-21 Basf Ag Improvements in the purification of crude terephthalic acid
US5767311A (en) * 1995-06-07 1998-06-16 Glitsch International, Inc. Method and apparatus for preparing purified terephtalic acid

Also Published As

Publication number Publication date
JP2002524390A (ja) 2002-08-06
JP4817496B2 (ja) 2011-11-16
RU2214391C2 (ru) 2003-10-20

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Legal Events

Date Code Title Description
MM9K Patent not in force due to non-payment of renewal fees