BE547079A - - Google Patents

Info

Publication number
BE547079A
BE547079A BE547079DA BE547079A BE 547079 A BE547079 A BE 547079A BE 547079D A BE547079D A BE 547079DA BE 547079 A BE547079 A BE 547079A
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.)
Publication of BE547079A publication Critical patent/BE547079A/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
    • 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
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BE547079D 1955-04-20 BE547079A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1056128X 1955-04-20

Publications (1)

Publication Number Publication Date
BE547079A true BE547079A (zh)

Family

ID=9597307

Family Applications (1)

Application Number Title Priority Date Filing Date
BE547079D BE547079A (zh) 1955-04-20

Country Status (5)

Country Link
BE (1) BE547079A (zh)
DE (1) DE1056128B (zh)
FR (1) FR1125014A (zh)
GB (1) GB833230A (zh)
NL (1) NL98195C (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072717A (en) * 1957-11-29 1963-01-08 Celanese Corp Recovery of isophthalic and terephthalic acids
NL275610A (zh) * 1961-03-06
BE792879A (fr) * 1971-12-17 1973-03-30 Chevron Res Procede d'isolement de l'anhydride maleique
DE2855630C2 (de) * 1978-12-22 1982-09-16 Davy McKee AG, 6000 Frankfurt Verfahren zur kontinuierlichen Abtrennung von Phthalsäureanhydrid aus den Reaktionsgasen der katalytischen Oxidation von o-Xylol und/oder Naphthalin
DE2855629C2 (de) * 1978-12-22 1986-11-13 Davy McKee AG, 6000 Frankfurt Verfahren zur kontinuierlichen Abtrennung von Phthalsäureanhydrid aus den Reaktionsgasen der katalytischen Oxidation von o-Xylol und/oder Naphthalin
DE3207208A1 (de) * 1982-02-27 1983-09-08 Basf Ag, 6700 Ludwigshafen Verfahren zur kontinuierlichen gewinnung von phthalsaeureanhydrid und maleinsaeureanhydrid aus reaktionsgasen
ZA973972B (en) * 1996-05-14 1998-03-23 Kvaerner Process Tech Ltd A process for the production of at least one C4 compound selected from butane-1,4-diol, gamma-butyrolactone and tetrahydrofuran.
ZA973971B (en) * 1996-05-15 1998-03-23 Kvaerner Process Tech Ltd A process for the production of at least one C4 compound selected from butane-1,4-diol, gamma-butyrolactone and tetrahydrofuran.
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
GB9724004D0 (en) 1997-11-13 1998-10-21 Kvaerner Process Tech Ltd Process
GB9724195D0 (en) 1997-11-14 1998-01-14 Kvaerner Process Tech Ltd Process
EP0962438B1 (en) 1998-03-23 2001-06-06 Basf Aktiengesellschaft Process for the preparation of 1,4-butanediol, butyrolactone and tetrahydrofuran.

Also Published As

Publication number Publication date
DE1056128B (de) 1959-04-30
NL98195C (zh)
FR1125014A (fr) 1956-10-23
GB833230A (en) 1960-04-21

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