BE680473A - - Google Patents

Info

Publication number
BE680473A
BE680473A BE680473DA BE680473A BE 680473 A BE680473 A BE 680473A BE 680473D A BE680473D A BE 680473DA BE 680473 A BE680473 A BE 680473A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE680473A publication Critical patent/BE680473A/xx

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54Preparation of carboxylic acid anhydrides
    • C07C51/573Separation; Purification; Stabilisation; Use of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Furan Compounds (AREA)
BE680473D 1965-05-04 1966-05-03 BE680473A (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM65101A DE1295540B (de) 1965-05-04 1965-05-04 Verfahren zur Herstellung von reinstem Phthalsaeureanhydrid

Publications (1)

Publication Number Publication Date
BE680473A true BE680473A (en:Method) 1966-10-17

Family

ID=7311331

Family Applications (1)

Application Number Title Priority Date Filing Date
BE680473D BE680473A (en:Method) 1965-05-04 1966-05-03

Country Status (7)

Country Link
US (1) US3380896A (en:Method)
JP (1) JPS548664B1 (en:Method)
BE (1) BE680473A (en:Method)
CS (1) CS150931B2 (en:Method)
DE (1) DE1295540B (en:Method)
GB (1) GB1121588A (en:Method)
NL (1) NL6602053A (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4948418B1 (en:Method) * 1968-03-27 1974-12-21

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1668398C3 (de) * 1967-07-07 1979-07-05 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur Gewinnung von reinen Phthalsäureanhydrid
GB1225607A (en:Method) * 1968-08-02 1971-03-17
JPS5845435B2 (ja) * 1977-05-06 1983-10-08 新日鐵化学株式会社 無水フタル酸蒸留残渣の処理方法
DE3133310C2 (de) * 1980-12-17 1984-06-28 Davy McKee AG, 6000 Frankfurt Verfahren zur kontinuierlichen Abtrennung schwerflüchtiger Bestandteile von einem durch Naphthalin-Oxidation hergestellten Roh-Phthalsäureanhydrid
US5508443A (en) * 1994-05-12 1996-04-16 Exxon Chemical Patents Inc. Liquid phthalic anhydride recovery process
US5730844A (en) * 1996-11-29 1998-03-24 Exxon Chemical Patents Inc. Liquid phthalic anhydride recovery process using a rectification tower with benzoic acid control
US5718808A (en) * 1996-11-29 1998-02-17 Exxon Chemical Patents Inc. Solvent assisted process for recovery of phthalic anhydride in the liquid phase by distillation
US5869700A (en) * 1997-02-21 1999-02-09 Exxon Chemical Patents Inc. Method for recovering phthalic anhydride/maleic anhydride mixtures by distillation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670325A (en) * 1951-07-14 1954-02-23 American Cyanamid Co Distillation purification of phthalic anhydride
US2786805A (en) * 1954-03-01 1957-03-26 California Research Corp Process of purification of phthalic anhydride
DE1181691B (de) * 1958-05-30 1964-11-19 Imp Exp Chemischer Anlagen Verfahren zur kontinuierlichen Destillation von Phthalsaeureanhydrid
US3011955A (en) * 1959-06-04 1961-12-05 Scient Design Co Purification of phthalic anhydride
DE1097427B (de) * 1959-08-14 1961-01-19 Basf Ag Verfahren zur Gewinnung von reinem Phthalsaeureanhydrid aus dem bei der Oxydation von Naphthalin erhaltenen Rohprodukt
DE1167810B (de) * 1960-11-12 1964-04-16 Basf Ag Verfahren zur Gewinnung von reinem Phthalsaeureanhydrid
US3135669A (en) * 1961-10-16 1964-06-02 Badger Co Purification of maleic anhydride by flash vaporization and two stage fractional distillation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4948418B1 (en:Method) * 1968-03-27 1974-12-21

Also Published As

Publication number Publication date
US3380896A (en) 1968-04-30
DE1295540B (de) 1969-05-22
CS150931B2 (en:Method) 1973-09-17
NL6602053A (en:Method) 1966-11-07
JPS548664B1 (en:Method) 1979-04-17
GB1121588A (en) 1968-07-31

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: METALLGESELLSCHAFT A.G.

Effective date: 19840503