ZA722811B - Method of dehydration of pyromellitic acid - Google Patents

Method of dehydration of pyromellitic acid

Info

Publication number: ZA722811B
Authority: ZA; South Africa
Prior art keywords: dehydration; pyromellitic acid; pyromellitic; acid
Prior art date: 1971-04-26

Application number

ZA722811A

Other languages

English (en)

Inventor

A Neri

F Roveri

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.)

1971-04-26

Filing date

1972-04-26

Publication date

1973-02-28

1972-04-26 Application filed by Prolizenz Ag filed Critical Prolizenz Ag

1973-02-28 Publication of ZA722811B publication Critical patent/ZA722811B/xx

Links

CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 title 2
230000018044 dehydration Effects 0.000 title 1
238000006297 dehydration reaction Methods 0.000 title 1
238000000034 method Methods 0.000 title 1

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)

ZA722811A 1971-04-26 1972-04-26 Method of dehydration of pyromellitic acid ZA722811B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CH525971A CH536265A (de)	1971-04-26	1971-04-26	Verfahren zur Dehydratisierung von Pyromellithsäure

Publications (1)

Publication Number	Publication Date
ZA722811B true ZA722811B (en)	1973-02-28

Family

ID=4290601

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA722811A ZA722811B (en)	1971-04-26	1972-04-26	Method of dehydration of pyromellitic acid

Country Status (8)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0676413B2 (ja) *	1985-09-10	1994-09-28	三菱瓦斯化学株式会社	無水ピロメリツト酸の製造方法

1971
- 1971-04-26 CH CH525971A patent/CH536265A/de not_active IP Right Cessation
- 1971-10-14 DE DE19712151239 patent/DE2151239A1/de active Pending
1972
- 1972-04-06 BE BE781731A patent/BE781731A/xx unknown
- 1972-04-17 ES ES401842A patent/ES401842A1/es not_active Expired
- 1972-04-24 NL NL7205521A patent/NL7205521A/xx unknown
- 1972-04-24 IT IT23509/72A patent/IT954906B/it active
- 1972-04-25 FR FR7214717A patent/FR2134515A1/fr active Granted
- 1972-04-26 ZA ZA722811A patent/ZA722811B/xx unknown

Also Published As

Publication number	Publication date
DE2151239A1 (de)	1972-11-09
CH536265A (de)	1973-04-30
IT954906B (it)	1973-09-15
NL7205521A (de)	1972-10-30
BE781731A (fr)	1972-07-31
FR2134515A1 (en)	1972-12-08
FR2134515B1 (de)	1975-06-20
ES401842A1 (es)	1975-03-01

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