NL7404618A - - Google Patents
Info
- Publication number
- NL7404618A NL7404618A NL7404618A NL7404618A NL7404618A NL 7404618 A NL7404618 A NL 7404618A NL 7404618 A NL7404618 A NL 7404618A NL 7404618 A NL7404618 A NL 7404618A NL 7404618 A NL7404618 A NL 7404618A
- Authority
- NL
- Netherlands
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
- C07C51/573—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Furan Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7312301A FR2224435B1 (fr) | 1973-04-05 | 1973-04-05 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NL7404618A true NL7404618A (fr) | 1974-10-08 |
| NL169315B NL169315B (nl) | 1982-02-01 |
| NL169315C NL169315C (nl) | 1982-07-01 |
Family
ID=9117470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NLAANVRAGE7404618,A NL169315C (nl) | 1973-04-05 | 1974-04-04 | Werkwijze voor het destilleren van ftaalzuuranhydride onder opwerken van het verkregen destillatieresidu. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3923839A (fr) |
| JP (1) | JPS5241251B2 (fr) |
| BE (1) | BE813322A (fr) |
| CA (1) | CA1032493A (fr) |
| DE (1) | DE2416457C3 (fr) |
| FR (1) | FR2224435B1 (fr) |
| GB (1) | GB1416847A (fr) |
| IT (1) | IT1004154B (fr) |
| NL (1) | NL169315C (fr) |
| PH (1) | PH10792A (fr) |
| YU (1) | YU39917B (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845435B2 (ja) * | 1977-05-06 | 1983-10-08 | 新日鐵化学株式会社 | 無水フタル酸蒸留残渣の処理方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2333368A (en) * | 1940-06-14 | 1943-11-02 | Allied Chem & Dye Corp | Hydration of phthalic anhydride |
| NL257871A (fr) * | 1959-07-13 | |||
| DE1266748C2 (de) * | 1966-05-21 | 1973-07-19 | Basf Ag | Verfahren zur Verhinderung der Verkrustung von Heizflaechen bei der kontinuierlichen Destillation von Phthalsaeureanhydrid |
| DE1768817B1 (de) * | 1968-07-03 | 1972-04-27 | Zieren Chemiebau Gmbh Dr A | Verfahren zur Reinigung von rohem Phthalsaeureanhydrid durch Destillation |
-
1973
- 1973-04-05 FR FR7312301A patent/FR2224435B1/fr not_active Expired
-
1974
- 1974-03-26 PH PH15661A patent/PH10792A/en unknown
- 1974-04-02 US US457190A patent/US3923839A/en not_active Expired - Lifetime
- 1974-04-03 GB GB1474274A patent/GB1416847A/en not_active Expired
- 1974-04-04 YU YU929/74A patent/YU39917B/xx unknown
- 1974-04-04 JP JP49038399A patent/JPS5241251B2/ja not_active Expired
- 1974-04-04 NL NLAANVRAGE7404618,A patent/NL169315C/xx not_active IP Right Cessation
- 1974-04-04 CA CA196,867A patent/CA1032493A/fr not_active Expired
- 1974-04-04 BE BE142866A patent/BE813322A/fr not_active IP Right Cessation
- 1974-04-04 DE DE2416457A patent/DE2416457C3/de not_active Expired
- 1974-04-05 IT IT50191/74A patent/IT1004154B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| NL169315C (nl) | 1982-07-01 |
| JPS5241251B2 (fr) | 1977-10-17 |
| DE2416457A1 (de) | 1974-10-24 |
| YU92974A (en) | 1982-02-28 |
| NL169315B (nl) | 1982-02-01 |
| FR2224435A1 (fr) | 1974-10-31 |
| GB1416847A (en) | 1975-12-10 |
| PH10792A (en) | 1977-09-06 |
| CA1032493A (fr) | 1978-06-06 |
| DE2416457C3 (de) | 1984-09-06 |
| DE2416457B2 (de) | 1978-01-05 |
| YU39917B (en) | 1985-06-30 |
| US3923839A (en) | 1975-12-02 |
| JPS5029526A (fr) | 1975-03-25 |
| FR2224435B1 (fr) | 1976-11-12 |
| IT1004154B (it) | 1976-07-10 |
| BE813322A (fr) | 1974-10-04 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BB | A search report has been drawn up | ||
| BC | A request for examination has been filed | ||
| SNR | Assignments of patents or rights arising from examined patent applications |
Owner name: CHLOE CHIMIE S.A. |
|
| TNT | Modifications of names of proprietors of patents or applicants of examined patent applications |
Owner name: CHLOE CHIMIE S.A. |
|
| A85 | Still pending on 85-01-01 | ||
| BV | The patent application has lapsed | ||
| V4 | Discontinued because of reaching the maximum lifetime of a patent |