NL6904780A - - Google Patents
Info
- Publication number
- NL6904780A NL6904780A NL6904780A NL6904780A NL6904780A NL 6904780 A NL6904780 A NL 6904780A NL 6904780 A NL6904780 A NL 6904780A NL 6904780 A NL6904780 A NL 6904780A NL 6904780 A NL6904780 A NL 6904780A
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/13—Spirits
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Furan Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1768059A DE1768059C2 (de) | 1968-03-27 | 1968-03-27 | Verfahren zur Gewinnung von vorgereinigtem Phthalsäureanhydrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6904780A true NL6904780A (xx) | 1969-09-30 |
Family
ID=5699581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6904780A NL6904780A (xx) | 1968-03-27 | 1969-03-27 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3655521A (xx) |
| JP (1) | JPS4948418B1 (xx) |
| DE (1) | DE1768059C2 (xx) |
| NL (1) | NL6904780A (xx) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4055577A (en) * | 1974-11-11 | 1977-10-25 | Davy Powergas Gmbh | Process for thermal treatment of crude phthalic acid |
| DE2826346C2 (de) * | 1978-06-16 | 1985-02-07 | Davy McKee AG, 6000 Frankfurt | Verfahren zur Absaugung von Gasen und Dämpfen aus Vakuum-Destillationskolonnen |
| 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 |
| US5214157A (en) * | 1991-05-07 | 1993-05-25 | Exxon Chemical Patents Inc. | Process for the disposal of phthalic anhydride decomposer vapors |
| US5508443A (en) * | 1994-05-12 | 1996-04-16 | Exxon Chemical Patents Inc. | Liquid phthalic anhydride recovery process |
| 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 |
| 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 |
| US5869700A (en) * | 1997-02-21 | 1999-02-09 | Exxon Chemical Patents Inc. | Method for recovering phthalic anhydride/maleic anhydride mixtures by distillation |
| US6657067B2 (en) | 2002-03-22 | 2003-12-02 | General Electric Company | Method for the manufacture of chlorophthalic anhydride |
| US6649773B2 (en) | 2002-03-22 | 2003-11-18 | General Electric Company | Method for the manufacture of halophthalic acids and anhydrides |
| US6657068B2 (en) | 2002-03-22 | 2003-12-02 | General Electric Company | Liquid phase oxidation of halogenated ortho-xylenes |
| US7541489B2 (en) * | 2004-06-30 | 2009-06-02 | Sabic Innovative Plastics Ip B.V. | Method of making halophthalic acids and halophthalic anhydrides |
| US20060004223A1 (en) * | 2004-06-30 | 2006-01-05 | General Electric Company | Method of making halophthalic acids and halophthalic anhydrides |
Family Cites Families (5)
| 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 |
| US3011955A (en) * | 1959-06-04 | 1961-12-05 | Scient Design Co | Purification of phthalic anhydride |
| US3187016A (en) * | 1961-10-16 | 1965-06-01 | Halcon International Inc | Recovery of phthalic anhydride |
| DE1295540B (de) * | 1965-05-04 | 1969-05-22 | Metallgesellschaft Ag | Verfahren zur Herstellung von reinstem Phthalsaeureanhydrid |
-
1968
- 1968-03-27 DE DE1768059A patent/DE1768059C2/de not_active Expired
-
1969
- 1969-03-27 US US842417*A patent/US3655521A/en not_active Expired - Lifetime
- 1969-03-27 NL NL6904780A patent/NL6904780A/xx unknown
- 1969-03-27 JP JP44022811A patent/JPS4948418B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1768059B1 (de) | 1972-04-27 |
| US3655521A (en) | 1972-04-11 |
| JPS4948418B1 (xx) | 1974-12-21 |
| DE1768059C2 (de) | 1975-08-28 |