JPS4948418B1 - - Google Patents

Info

Publication number
JPS4948418B1
JPS4948418B1 JP44022811A JP2281169A JPS4948418B1 JP S4948418 B1 JPS4948418 B1 JP S4948418B1 JP 44022811 A JP44022811 A JP 44022811A JP 2281169 A JP2281169 A JP 2281169A JP S4948418 B1 JPS4948418 B1 JP S4948418B1
Authority
JP
Japan
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.)
Pending
Application number
JP44022811A
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 JPS4948418B1 publication Critical patent/JPS4948418B1/ja
Pending legal-status Critical Current

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S203/00—Distillation: processes, separatory
    • Y10S203/13—Spirits
JP44022811A 1968-03-27 1969-03-27 Pending JPS4948418B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1768059A DE1768059C2 (de) 1968-03-27 1968-03-27 Verfahren zur Gewinnung von vorgereinigtem Phthalsäureanhydrid

Publications (1)

Publication Number Publication Date
JPS4948418B1 true JPS4948418B1 (ja) 1974-12-21

Family

ID=5699581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP44022811A Pending JPS4948418B1 (ja) 1968-03-27 1969-03-27

Country Status (4)

Country Link
US (1) US3655521A (ja)
JP (1) JPS4948418B1 (ja)
DE (1) DE1768059C2 (ja)
NL (1) NL6904780A (ja)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055577A (en) * 1974-11-11 1977-10-25 Davy Powergas Gmbh Process for thermal treatment of crude phthalic acid
DE2826346C2 (de) * 1978-06-16 1985-02-07 Davy McKee AG, 6000 Frankfurt Verfahren zur Absaugung von Gasen und Dämpfen aus Vakuum-Destillationskolonnen
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
US5214157A (en) * 1991-05-07 1993-05-25 Exxon Chemical Patents Inc. Process for the disposal of phthalic anhydride decomposer vapors
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
US6657067B2 (en) 2002-03-22 2003-12-02 General Electric Company Method for the manufacture of chlorophthalic anhydride
US6649773B2 (en) 2002-03-22 2003-11-18 General Electric Company Method for the manufacture of halophthalic acids and anhydrides
US6657068B2 (en) 2002-03-22 2003-12-02 General Electric Company Liquid phase oxidation of halogenated ortho-xylenes
US7541489B2 (en) * 2004-06-30 2009-06-02 Sabic Innovative Plastics Ip B.V. Method of making halophthalic acids and halophthalic anhydrides
US20060004223A1 (en) * 2004-06-30 2006-01-05 General Electric Company Method of making halophthalic acids and halophthalic anhydrides

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE680473A (ja) * 1965-05-04 1966-10-17

Family Cites Families (4)

* 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
US3011955A (en) * 1959-06-04 1961-12-05 Scient Design Co Purification of phthalic anhydride
US3187016A (en) * 1961-10-16 1965-06-01 Halcon International Inc Recovery of phthalic anhydride

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE680473A (ja) * 1965-05-04 1966-10-17

Also Published As

Publication number Publication date
DE1768059B1 (de) 1972-04-27
US3655521A (en) 1972-04-11
NL6904780A (ja) 1969-09-30
DE1768059C2 (de) 1975-08-28

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