CS150931B2 - - Google Patents
Info
- Publication number
- CS150931B2 CS150931B2 CS2466*BA CS246666A CS150931B2 CS 150931 B2 CS150931 B2 CS 150931B2 CS 246666 A CS246666 A CS 246666A CS 150931 B2 CS150931 B2 CS 150931B2
- Authority
- CS
- Czechoslovakia
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Furan Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM65101A DE1295540B (de) | 1965-05-04 | 1965-05-04 | Verfahren zur Herstellung von reinstem Phthalsaeureanhydrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS150931B2 true CS150931B2 (US06168776-20010102-C00041.png) | 1973-09-17 |
Family
ID=7311331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS2466*BA CS150931B2 (US06168776-20010102-C00041.png) | 1965-05-04 | 1966-04-14 |
Country Status (7)
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1668398C3 (de) * | 1967-07-07 | 1979-07-05 | Metallgesellschaft Ag, 6000 Frankfurt | Verfahren zur Gewinnung von reinen Phthalsäureanhydrid |
| DE1768059C2 (de) * | 1968-03-27 | 1975-08-28 | Davy Powergas Gmbh, 5000 Koeln | Verfahren zur Gewinnung von vorgereinigtem Phthalsäureanhydrid |
| FR2017955B1 (US06168776-20010102-C00041.png) * | 1968-08-02 | 1975-09-26 | Chemie Linz Ag | |
| 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 |
| DE3133310C2 (de) * | 1980-12-17 | 1984-06-28 | Davy McKee AG, 6000 Frankfurt | Verfahren zur kontinuierlichen Abtrennung schwerflüchtiger Bestandteile von einem durch Naphthalin-Oxidation hergestellten Roh-Phthalsäureanhydrid |
| US5508443A (en) * | 1994-05-12 | 1996-04-16 | Exxon Chemical Patents Inc. | Liquid phthalic anhydride recovery process |
| US5718808A (en) * | 1996-11-29 | 1998-02-17 | Exxon Chemical Patents Inc. | Solvent assisted process for recovery of phthalic anhydride in the liquid phase by distillation |
| US5730844A (en) * | 1996-11-29 | 1998-03-24 | Exxon Chemical Patents Inc. | Liquid phthalic anhydride recovery process using a rectification tower with benzoic acid control |
| US5869700A (en) * | 1997-02-21 | 1999-02-09 | Exxon Chemical Patents Inc. | Method for recovering phthalic anhydride/maleic anhydride mixtures by distillation |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2670325A (en) * | 1951-07-14 | 1954-02-23 | American Cyanamid Co | Distillation purification of phthalic anhydride |
| US2786805A (en) * | 1954-03-01 | 1957-03-26 | California Research Corp | Process of purification of phthalic anhydride |
| DE1181691B (de) * | 1958-05-30 | 1964-11-19 | Imp Exp Chemischer Anlagen | Verfahren zur kontinuierlichen Destillation von Phthalsaeureanhydrid |
| US3011955A (en) * | 1959-06-04 | 1961-12-05 | Scient Design Co | Purification of phthalic anhydride |
| DE1097427B (de) * | 1959-08-14 | 1961-01-19 | Basf Ag | Verfahren zur Gewinnung von reinem Phthalsaeureanhydrid aus dem bei der Oxydation von Naphthalin erhaltenen Rohprodukt |
| DE1167810B (de) * | 1960-11-12 | 1964-04-16 | Basf Ag | Verfahren zur Gewinnung von reinem Phthalsaeureanhydrid |
| US3135669A (en) * | 1961-10-16 | 1964-06-02 | Badger Co | Purification of maleic anhydride by flash vaporization and two stage fractional distillation |
-
1965
- 1965-05-04 DE DEM65101A patent/DE1295540B/de active Pending
-
1966
- 1966-02-17 NL NL6602053A patent/NL6602053A/xx unknown
- 1966-04-14 CS CS2466*BA patent/CS150931B2/cs unknown
- 1966-04-25 GB GB18079/66A patent/GB1121588A/en not_active Expired
- 1966-05-02 US US546807A patent/US3380896A/en not_active Expired - Lifetime
- 1966-05-03 BE BE680473D patent/BE680473A/xx not_active IP Right Cessation
- 1966-05-04 JP JP2814966A patent/JPS548664B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE680473A (US06168776-20010102-C00041.png) | 1966-10-17 |
| US3380896A (en) | 1968-04-30 |
| NL6602053A (US06168776-20010102-C00041.png) | 1966-11-07 |
| GB1121588A (en) | 1968-07-31 |
| DE1295540B (de) | 1969-05-22 |
| JPS548664B1 (US06168776-20010102-C00041.png) | 1979-04-17 |
