BE643472A - - Google Patents
Info
- Publication number
- BE643472A BE643472A BE643472A BE643472A BE643472A BE 643472 A BE643472 A BE 643472A BE 643472 A BE643472 A BE 643472A BE 643472 A BE643472 A BE 643472A BE 643472 A BE643472 A BE 643472A
- Authority
- BE
- Belgium
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/383—Separation; Purification; Stabilisation; Use of additives by distillation
- C07C17/386—Separation; Purification; Stabilisation; Use of additives by distillation with auxiliary compounds
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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
- Y10S62/00—Refrigeration
- Y10S62/918—Halocarbon
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US256520A US3282801A (en) | 1963-02-06 | 1963-02-06 | Extractive distillation of tetrafluoroethylene with an oxygenated hydrocarbon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE643472A true BE643472A (US20110009641A1-20110113-C00256.png) | 1964-08-06 |
Family
ID=22972533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE643472A BE643472A (US20110009641A1-20110113-C00256.png) | 1963-02-06 | 1964-02-06 |
Country Status (6)
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1251300B (de) * | 1964-12-29 | 1967-10-05 | E I du Pont de Nemours and Company Wilmington Del (V St A) | Verfahren zur Reinigung von Hexa fluorpropylenepoxyd unter Abtrennung von Hexafluorpropylen |
| CH459991A (de) * | 1964-12-30 | 1968-07-31 | Ciba Geigy | Verfahren zur Trennung von Gemischen von cycloaliphatischen Fluorverbindungen |
| BE786675A (fr) * | 1971-08-02 | 1973-01-25 | Airco Inc | Separation d'oxydes d'alkyle halogenes par distillation azeotropique. |
| US3989601A (en) * | 1975-09-08 | 1976-11-02 | The Dow Chemical Company | Purification of 1,1,1-trichloroethane by extractive distillation |
| DE2638650C2 (de) * | 1976-08-27 | 1982-11-25 | Hoechst Ag, 6000 Frankfurt | Verfahren zur Abtrennung von Tetrafluoräthylen aus Gasgemischen |
| US4134796A (en) * | 1977-11-17 | 1979-01-16 | Asahi Glass Company Ltd. | Method of purifying hexafluoropropylene oxide |
| FR2409973A1 (fr) * | 1977-11-28 | 1979-06-22 | Asahi Glass Co Ltd | Procede de purification de l'oxyde d'hexafluoropropylene |
| DE3729106A1 (de) * | 1987-09-01 | 1989-03-09 | Hoechst Ag | Verfahren zur gewinnung von reinem tetrafluorethylen |
| US5049241A (en) * | 1990-03-27 | 1991-09-17 | E. I. Du Pont De Nemours And Company | Extractive distillation |
| BR9402038A (pt) * | 1993-05-25 | 1995-03-07 | Showa Denko Kk | Processo de purificação de pentaflúor etano |
| ATE191906T1 (de) * | 1994-08-17 | 2000-05-15 | Daikin Ind Ltd | Verfahren zur herstellung von pentafluorethan |
| WO1996023752A1 (en) * | 1995-02-01 | 1996-08-08 | E.I. Du Pont De Nemours And Company | SEPARATING AND REMOVING IMPURITIES FROM 1,1,1-TRIFLUOROETHANE (HFC-143a) BY USING EXTRACTIVE DISTILLATION |
| US5626023A (en) * | 1995-02-16 | 1997-05-06 | Praxair Technology, Inc. | Cryogenic rectification system for fluorine compound recovery using additive liquid |
| US6047560A (en) * | 1997-03-12 | 2000-04-11 | Showa Denko K.K. | Process for separating pentafluoroethane and 1,1,1-trifluoroethane |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604439A (en) * | 1952-07-22 | Distillation of | ||
| US2339160A (en) * | 1940-08-02 | 1944-01-11 | Shell Dev | Distillation process |
| US2473911A (en) * | 1943-07-19 | 1949-06-21 | Ici Ltd | Production of fluorocarbons |
| US2357028A (en) * | 1943-08-04 | 1944-08-29 | Shell Dev | Solvent extraction process |
| US2456184A (en) * | 1946-04-17 | 1948-12-14 | Du Pont | Purification of tetrachlorethylene |
| FR1293690A (fr) * | 1960-04-28 | 1962-05-18 | Du Pont | Procédé de distillation extractive de carbures fluorés |
| NL264123A (US20110009641A1-20110113-C00256.png) * | 1960-04-28 | |||
| US3152051A (en) * | 1962-03-12 | 1964-10-06 | Pennsalt Chemicals Corp | Separation of a mixture containing tetrafluoroethylene and fluoroform by extractive distillation |
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0
- NL NL131714D patent/NL131714C/xx active
-
1963
- 1963-02-06 US US256520A patent/US3282801A/en not_active Expired - Lifetime
-
1964
- 1964-01-22 DE DEP33431A patent/DE1295543B/de active Pending
- 1964-02-05 FR FR962672A patent/FR1381844A/fr not_active Expired
- 1964-02-06 NL NL6400982A patent/NL6400982A/xx unknown
- 1964-02-06 BE BE643472A patent/BE643472A/xx unknown
- 1964-02-06 GB GB5155/64A patent/GB1034894A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL131714C (US20110009641A1-20110113-C00256.png) | |
| NL6400982A (US20110009641A1-20110113-C00256.png) | 1964-08-07 |
| FR1381844A (fr) | 1964-12-14 |
| GB1034894A (en) | 1966-07-06 |
| US3282801A (en) | 1966-11-01 |
| DE1295543B (de) | 1969-05-22 |
