ES341720A1 - Procedimiento para eltratamiento de los licores residuales en la fabricacion de anhidrido ftalico. - Google Patents

Procedimiento para eltratamiento de los licores residuales en la fabricacion de anhidrido ftalico.

Info

Publication number
ES341720A1
ES341720A1 ES341720A ES341720A ES341720A1 ES 341720 A1 ES341720 A1 ES 341720A1 ES 341720 A ES341720 A ES 341720A ES 341720 A ES341720 A ES 341720A ES 341720 A1 ES341720 A1 ES 341720A1
Authority
ES
Spain
Prior art keywords
citraconic
solution
acid
manufacture
maleic acid
Prior art date
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.)
Expired
Application number
ES341720A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Produits Chimiques Pechiney Saint Gobain
Original Assignee
Produits Chimiques Pechiney Saint Gobain
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 by Produits Chimiques Pechiney Saint Gobain filed Critical Produits Chimiques Pechiney Saint Gobain
Publication of ES341720A1 publication Critical patent/ES341720A1/es
Expired 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
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
    • C07C51/353—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by isomerisation; by change of size of the carbon skeleton
    • 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
    • C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
ES341720A 1966-06-13 1967-06-13 Procedimiento para eltratamiento de los licores residuales en la fabricacion de anhidrido ftalico. Expired ES341720A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR65208A FR1489787A (fr) 1966-06-13 1966-06-13 Procédé de traitement des eaux résiduaires de la fabrication de l'anhydride phtalique

Publications (1)

Publication Number Publication Date
ES341720A1 true ES341720A1 (es) 1968-07-01

Family

ID=8610777

Family Applications (1)

Application Number Title Priority Date Filing Date
ES341720A Expired ES341720A1 (es) 1966-06-13 1967-06-13 Procedimiento para eltratamiento de los licores residuales en la fabricacion de anhidrido ftalico.

Country Status (7)

Country Link
US (1) US3528997A (es)
BE (1) BE699770A (es)
DE (1) DE1618793B2 (es)
ES (1) ES341720A1 (es)
FR (1) FR1489787A (es)
GB (1) GB1175079A (es)
NL (1) NL6708129A (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865696A (en) * 1969-07-16 1975-02-11 Veba Chemie Ag Recovery of citraconic acid anhydride by isomerization and vacuum distillation
DE2826346C2 (de) * 1978-06-16 1985-02-07 Davy McKee AG, 6000 Frankfurt Verfahren zur Absaugung von Gasen und Dämpfen aus Vakuum-Destillationskolonnen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942006A (en) * 1957-07-01 1960-06-21 Scient Design Co Preparation of maleic anhydride by azeotropic distillation of maleic acid
US3007942A (en) * 1957-11-19 1961-11-07 Standard Oil Co Resolution of trimesic and trimellitic acid
US3098095A (en) * 1959-08-10 1963-07-16 Standared Oil Company Process for resolving aromatic polycarboxylic acids capable of forming intramolecular anhydrides
FR1453334A (fr) * 1965-06-30 1966-06-03 Pechiney Saint Gobain Procédé d'extraction de l'acide citraconique

Also Published As

Publication number Publication date
US3528997A (en) 1970-09-15
FR1489787A (fr) 1967-07-28
DE1618793B2 (de) 1976-06-16
BE699770A (es) 1967-12-12
GB1175079A (en) 1969-12-23
NL6708129A (es) 1967-12-14
DE1618793A1 (de) 1971-02-11

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