JPS5095181A - - Google Patents
Info
- Publication number
- JPS5095181A JPS5095181A JP14356874A JP14356874A JPS5095181A JP S5095181 A JPS5095181 A JP S5095181A JP 14356874 A JP14356874 A JP 14356874A JP 14356874 A JP14356874 A JP 14356874A JP S5095181 A JPS5095181 A JP S5095181A
- Authority
- JP
- Japan
- 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.)
- Granted
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D7/00—Sublimation
- B01D7/02—Crystallisation directly from the vapour phase
-
- 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
- C07C51/573—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Furan Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732362659 DE2362659C2 (de) | 1973-12-17 | 1973-12-17 | Verfahren und Vorrichtung zur Gewinnung von höherschmelzenden organischen Stoffen durch fraktionierte Desublimation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5095181A true JPS5095181A (ja) | 1975-07-29 |
| JPS5727722B2 JPS5727722B2 (ja) | 1982-06-12 |
Family
ID=5900997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14356874A Expired JPS5727722B2 (ja) | 1973-12-17 | 1974-12-16 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5727722B2 (ja) |
| DE (1) | DE2362659C2 (ja) |
| FR (1) | FR2254538A1 (ja) |
| IT (1) | IT1027661B (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2751979A1 (de) * | 1977-11-22 | 1979-05-23 | Huels Chemische Werke Ag | Verfahren zur fraktionierten desublimation von pyromellitsaeuredianhydrid |
| DE3421301A1 (de) * | 1984-06-08 | 1985-12-12 | Hüls AG, 4370 Marl | Verfahren zur herstellung von pyromellitsaeuredianhydrid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH472364A (de) * | 1966-12-22 | 1969-05-15 | Geigy Ag J R | Verfahren zur Herstellung eines neuen polycyclischen Amins |
-
1973
- 1973-12-17 DE DE19732362659 patent/DE2362659C2/de not_active Expired
-
1974
- 1974-12-13 IT IT3052574A patent/IT1027661B/it active
- 1974-12-16 JP JP14356874A patent/JPS5727722B2/ja not_active Expired
- 1974-12-17 FR FR7441539A patent/FR2254538A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5727722B2 (ja) | 1982-06-12 |
| FR2254538A1 (en) | 1975-07-11 |
| DE2362659A1 (de) | 1975-06-19 |
| FR2254538B1 (ja) | 1978-12-22 |
| IT1027661B (it) | 1978-12-20 |
| DE2362659C2 (de) | 1982-12-23 |