DE2005628A1 - - Google Patents
Info
- Publication number
- DE2005628A1 DE2005628A1 DE19702005628 DE2005628A DE2005628A1 DE 2005628 A1 DE2005628 A1 DE 2005628A1 DE 19702005628 DE19702005628 DE 19702005628 DE 2005628 A DE2005628 A DE 2005628A DE 2005628 A1 DE2005628 A1 DE 2005628A1
- Authority
- DE
- Germany
- 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.)
- Pending
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)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702005628 DE2005628A1 (en:Method) | 1970-02-07 | 1970-02-07 | |
| FR7103687A FR2078166A5 (en:Method) | 1970-02-07 | 1971-02-04 | |
| US113278A US3869479A (en) | 1970-02-07 | 1971-02-08 | Removal of impurities during the recovery of crude phthalic anhydride |
| GB2121071A GB1330585A (en) | 1970-02-07 | 1971-04-19 | Process and apparatus for separating a sublimable organic acid anhydride from a gas containing it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702005628 DE2005628A1 (en:Method) | 1970-02-07 | 1970-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2005628A1 true DE2005628A1 (en:Method) | 1970-10-29 |
Family
ID=5761687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19702005628 Pending DE2005628A1 (en:Method) | 1970-02-07 | 1970-02-07 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3869479A (en:Method) |
| DE (1) | DE2005628A1 (en:Method) |
| FR (1) | FR2078166A5 (en:Method) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2255400B2 (de) * | 1972-11-11 | 1974-10-10 | Davy Powergas Gmbh, 5000 Koeln | Verfahren zur Abscheidung von Phthalsäureanhydrid |
| NL7514821A (nl) * | 1975-12-19 | 1977-06-21 | Ultra Centrifuge Nederland Nv | Inrichting voor het neerslaan en het afscheiden van een stof in vaste vorm uit een gasmengsel. |
| US4070150A (en) * | 1976-04-01 | 1978-01-24 | Top-Scor Products, Inc. | Continuous melting device |
| FR2391782A1 (fr) * | 1976-09-02 | 1978-12-22 | Pechiney Ugine Kuhlmann | Procede de nettoyage des parois internes d'un reacteur chimique |
| DE3044518A1 (de) * | 1980-11-26 | 1982-07-01 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von phthalsaeureanhydrid |
| US4813982A (en) * | 1987-01-20 | 1989-03-21 | The Dow Chemical Company | Process for obtaining a bisphenol melt |
| US5108034A (en) * | 1987-01-20 | 1992-04-28 | The Dow Chemical Company | Spray header and nozzle assembly |
| US4793783A (en) * | 1987-01-20 | 1988-12-27 | The Dow Chemical Company | Apparatus for producing prills |
| US4935173A (en) * | 1987-01-20 | 1990-06-19 | The Dow Chemical Company | Process for producing prills |
| US5145971A (en) * | 1991-10-25 | 1992-09-08 | Occidental Chemical Corporation | Process for the preparation of oxydiphthalic acid and purified oxydiphthalic anhydride from crude oxydiphthalic anhydride |
| CN103438758A (zh) * | 2013-08-28 | 2013-12-11 | 上海建安化工设计有限公司 | 一种带喷淋系统的切换冷凝器 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2441873A (en) * | 1944-06-03 | 1948-05-18 | Charles R Downs | Process for recovering molten phthalic anhydride |
| US2676180A (en) * | 1952-10-21 | 1954-04-20 | Koppers Co Inc | Cleaning phthalic anhydride condensers and like apparatus |
| US3024251A (en) * | 1960-07-29 | 1962-03-06 | Scient Design Co | Process for cleaning apparatus |
-
1970
- 1970-02-07 DE DE19702005628 patent/DE2005628A1/de active Pending
-
1971
- 1971-02-04 FR FR7103687A patent/FR2078166A5/fr not_active Expired
- 1971-02-08 US US113278A patent/US3869479A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2078166A5 (en:Method) | 1971-11-05 |
| US3869479A (en) | 1975-03-04 |