IT954906B - Procedimento di disidratazione dell acido piromellitico - Google Patents
Procedimento di disidratazione dell acido piromelliticoInfo
- Publication number
- IT954906B IT954906B IT23509/72A IT2350972A IT954906B IT 954906 B IT954906 B IT 954906B IT 23509/72 A IT23509/72 A IT 23509/72A IT 2350972 A IT2350972 A IT 2350972A IT 954906 B IT954906 B IT 954906B
- Authority
- IT
- Italy
- Prior art keywords
- dehydration
- procedure
- pyromellitic acid
- pyromellitic
- acid
- Prior art date
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)
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 |
|---|---|
| IT954906B true IT954906B (it) | 1973-09-15 |
Family
ID=4290601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT23509/72A IT954906B (it) | 1971-04-26 | 1972-04-24 | Procedimento di disidratazione dell acido piromellitico |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE781731A (it) |
| CH (1) | CH536265A (it) |
| DE (1) | DE2151239A1 (it) |
| ES (1) | ES401842A1 (it) |
| FR (1) | FR2134515A1 (it) |
| IT (1) | IT954906B (it) |
| NL (1) | NL7205521A (it) |
| ZA (1) | ZA722811B (it) |
Families Citing this family (1)
| 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 IT IT23509/72A patent/IT954906B/it active
- 1972-04-24 NL NL7205521A patent/NL7205521A/xx unknown
- 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 |
|---|---|
| FR2134515B1 (it) | 1975-06-20 |
| CH536265A (de) | 1973-04-30 |
| ZA722811B (en) | 1973-02-28 |
| NL7205521A (it) | 1972-10-30 |
| ES401842A1 (es) | 1975-03-01 |
| DE2151239A1 (de) | 1972-11-09 |
| FR2134515A1 (en) | 1972-12-08 |
| BE781731A (fr) | 1972-07-31 |
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