BE710935A - - Google Patents
Info
- Publication number
- BE710935A BE710935A BE710935DA BE710935A BE 710935 A BE710935 A BE 710935A BE 710935D A BE710935D A BE 710935DA BE 710935 A BE710935 A BE 710935A
- Authority
- BE
- Belgium
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
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- 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
-
- 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
- Y10S203/20—Power plant
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)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1668398A DE1668398C3 (de) | 1967-07-07 | 1967-07-07 | Verfahren zur Gewinnung von reinen Phthalsäureanhydrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE710935A true BE710935A (US07179912-20070220-C00142.png) | 1968-07-01 |
Family
ID=7315818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE710935D BE710935A (US07179912-20070220-C00142.png) | 1967-07-07 | 1968-02-16 |
Country Status (6)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331513A (en) * | 1971-03-22 | 1982-05-25 | Deuterium Corporation | Apparatus for purifying a vaporizable liquid |
| US4479851A (en) * | 1982-11-10 | 1984-10-30 | Rca Corporation | Purification of video disc lubricant additives |
| DE3504146A1 (de) * | 1985-02-07 | 1986-08-07 | Basf Ag, 6700 Ludwigshafen | Verfahren zur gewinnung von hochreinem maleinsaeureanhydrid aus rohem maleinsaeureanhydrid |
| 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 |
| DE10106664A1 (de) * | 2001-02-12 | 2002-08-14 | Basf Ag | Verfahren zur Herstellung von spezifikationsgerechtem Phthalsäureanhydrid |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3178452A (en) * | 1965-04-13 | Concentrator so | ||
| US2405393A (en) * | 1941-12-23 | 1946-08-06 | Standard Oil Dev Co | Batch distillation |
| US2526710A (en) * | 1947-11-12 | 1950-10-24 | Koppers Co Inc | Recovery of phthalic anhydride from still residue |
| US2670325A (en) * | 1951-07-14 | 1954-02-23 | American Cyanamid Co | Distillation purification of phthalic anhydride |
| US2995500A (en) * | 1953-12-28 | 1961-08-08 | Phillips Petroleum Co | Separation process of aqueous pyridine mixtures |
| US2786805A (en) * | 1954-03-01 | 1957-03-26 | California Research Corp | Process of purification of phthalic anhydride |
| US2965549A (en) * | 1956-03-22 | 1960-12-20 | Phillips Petroleum Co | Distillation column control |
| US3011955A (en) * | 1959-06-04 | 1961-12-05 | Scient Design Co | Purification of phthalic anhydride |
| BE597012A (US07179912-20070220-C00142.png) * | 1959-07-13 | |||
| US3187016A (en) * | 1961-10-16 | 1965-06-01 | Halcon International Inc | Recovery of phthalic anhydride |
| DE1227443B (de) * | 1964-03-24 | 1966-10-27 | Metallgesellschaft Ag | Verfahren zur Gewinnung von reinem Phthalsaeureanhydrid |
| DE1295540B (de) * | 1965-05-04 | 1969-05-22 | Metallgesellschaft Ag | Verfahren zur Herstellung von reinstem Phthalsaeureanhydrid |
-
1967
- 1967-07-07 DE DE1668398A patent/DE1668398C3/de not_active Expired
- 1967-12-02 ES ES347894A patent/ES347894A1/es not_active Expired
-
1968
- 1968-01-09 FR FR1551408D patent/FR1551408A/fr not_active Expired
- 1968-02-16 BE BE710935D patent/BE710935A/xx not_active IP Right Cessation
- 1968-05-22 US US731210A patent/US3540987A/en not_active Expired - Lifetime
- 1968-06-06 GB GB26989/68A patent/GB1208478A/en not_active Expired
-
1969
- 1969-01-30 ES ES363111A patent/ES363111A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3540987A (en) | 1970-11-17 |
| FR1551408A (US07179912-20070220-C00142.png) | 1968-12-27 |
| ES363111A1 (es) | 1970-11-16 |
| GB1208478A (en) | 1970-10-14 |
| ES347894A1 (es) | 1969-06-01 |
| DE1668398C3 (de) | 1979-07-05 |
| DE1668398B2 (de) | 1975-12-04 |
| DE1668398A1 (de) | 1971-03-25 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: METALLGESELLSCHAFT A.G. Effective date: 19840216 |