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

    • 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

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 (zh)

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 (zh) 1966-10-17

Family

ID=7311331

Family Applications (1)

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

Country Status (7)

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

Cited By (1)

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

Also Published As

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

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: METALLGESELLSCHAFT A.G.

Effective date: 19840503