AT169330B - Process for the preparation of pyromellitic anhydride - Google Patents

Process for the preparation of pyromellitic anhydride

Info

Publication number
AT169330B
AT169330B AT169330DA AT169330B AT 169330 B AT169330 B AT 169330B AT 169330D A AT169330D A AT 169330DA AT 169330 B AT169330 B AT 169330B
Authority
AT
Austria
Prior art keywords
preparation
pyromellitic anhydride
pyromellitic
anhydride
Prior art date
Application number
Other languages
German (de)
Inventor
Ernst Dr Philippi
Original Assignee
Ernst Dr Philippi
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 Ernst Dr Philippi filed Critical Ernst Dr Philippi
Application granted granted Critical
Publication of AT169330B publication Critical patent/AT169330B/en

Links

AT169330D 1950-01-09 1950-01-09 Process for the preparation of pyromellitic anhydride AT169330B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT169330T 1950-01-09

Publications (1)

Publication Number Publication Date
AT169330B true AT169330B (en) 1951-11-10

Family

ID=3655077

Family Applications (1)

Application Number Title Priority Date Filing Date
AT169330D AT169330B (en) 1950-01-09 1950-01-09 Process for the preparation of pyromellitic anhydride

Country Status (1)

Country Link
AT (1) AT169330B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187233B (en) * 1963-02-14 1965-02-18 Bergwerksverband Gmbh Process for the preparation of benzene polycarboxylic acids
DE1271702B (en) * 1963-02-14 1968-07-04 Bergwerksverband Gmbh Process for the preparation of alkylbenzenecarboxylic acids
EP0612748A1 (en) * 1993-02-25 1994-08-31 Consortium für elektrochemische Industrie GmbH Process for the preparation of pyromellitic dianhydride (PMDA)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187233B (en) * 1963-02-14 1965-02-18 Bergwerksverband Gmbh Process for the preparation of benzene polycarboxylic acids
DE1197443B (en) * 1963-02-14 1965-07-29 Bergwerksverband Gmbh Process for the production of mellitic acid
DE1271702B (en) * 1963-02-14 1968-07-04 Bergwerksverband Gmbh Process for the preparation of alkylbenzenecarboxylic acids
EP0612748A1 (en) * 1993-02-25 1994-08-31 Consortium für elektrochemische Industrie GmbH Process for the preparation of pyromellitic dianhydride (PMDA)
US5387699A (en) * 1993-02-25 1995-02-07 Industrie Gmbh Process for preparing pyromellitic dianhydride

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