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CH536265A - Process for the dehydration of pyromellitic acid - Google Patents

Process for the dehydration of pyromellitic acid

Info

Publication number
CH536265A
CH536265A CH525971A CH525971A CH536265A CH 536265 A CH536265 A CH 536265A CH 525971 A CH525971 A CH 525971A CH 525971 A CH525971 A CH 525971A CH 536265 A CH536265 A CH 536265A
Authority
CH
Switzerland
Prior art keywords
dehydration
pyromellitic acid
pyromellitic
acid
Prior art date
Application number
CH525971A
Other languages
German (de)
Inventor
Neri Amleto
Roveri Fausto Dr Chem
Original Assignee
Prolizenz Ag
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 Prolizenz Ag filed Critical Prolizenz Ag
Priority to CH525971A priority Critical patent/CH536265A/en
Priority to DE19712151239 priority patent/DE2151239A1/en
Priority to BE781731A priority patent/BE781731A/en
Priority to ES401842A priority patent/ES401842A1/en
Priority to NL7205521A priority patent/NL7205521A/xx
Priority to IT23509/72A priority patent/IT954906B/en
Priority to FR7214717A priority patent/FR2134515A1/en
Priority to ZA722811A priority patent/ZA722811B/en
Publication of CH536265A publication Critical patent/CH536265A/en

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
    • C07C51/56—Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
CH525971A 1971-04-26 1971-04-26 Process for the dehydration of pyromellitic acid CH536265A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CH525971A CH536265A (en) 1971-04-26 1971-04-26 Process for the dehydration of pyromellitic acid
DE19712151239 DE2151239A1 (en) 1971-04-26 1971-10-14 Process for the dehydration of pyromellitic acid
BE781731A BE781731A (en) 1971-04-26 1972-04-06 PYROMELLIC ACID DEHYDRATION PROCESS
ES401842A ES401842A1 (en) 1971-04-26 1972-04-17 Procedure for the dehydration of pyromelitic acid. (Machine-translation by Google Translate, not legally binding)
NL7205521A NL7205521A (en) 1971-04-26 1972-04-24
IT23509/72A IT954906B (en) 1971-04-26 1972-04-24 PROCEDURE FOR DEHYDRATION OF PYROMELLITIC ACID
FR7214717A FR2134515A1 (en) 1971-04-26 1972-04-25 Pyromellitic dianhydride - by dehydrating pyromellitic acid at high temp with distilln or water as azeotrope
ZA722811A ZA722811B (en) 1971-04-26 1972-04-26 Method of dehydration of pyromellitic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH525971A CH536265A (en) 1971-04-26 1971-04-26 Process for the dehydration of pyromellitic acid

Publications (1)

Publication Number Publication Date
CH536265A true CH536265A (en) 1973-04-30

Family

ID=4290601

Family Applications (1)

Application Number Title Priority Date Filing Date
CH525971A CH536265A (en) 1971-04-26 1971-04-26 Process for the dehydration of pyromellitic acid

Country Status (8)

Country Link
BE (1) BE781731A (en)
CH (1) CH536265A (en)
DE (1) DE2151239A1 (en)
ES (1) ES401842A1 (en)
FR (1) FR2134515A1 (en)
IT (1) IT954906B (en)
NL (1) NL7205521A (en)
ZA (1) ZA722811B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0676413B2 (en) * 1985-09-10 1994-09-28 三菱瓦斯化学株式会社 Method for producing pyromellitic dianhydride

Also Published As

Publication number Publication date
BE781731A (en) 1972-07-31
IT954906B (en) 1973-09-15
DE2151239A1 (en) 1972-11-09
FR2134515B1 (en) 1975-06-20
ZA722811B (en) 1973-02-28
NL7205521A (en) 1972-10-30
ES401842A1 (en) 1975-03-01
FR2134515A1 (en) 1972-12-08

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Legal Events

Date Code Title Description
PL Patent ceased