DE2040089C3 - Verfahren zur Verminderung des Wassergehaltes einer wäßrigen Tetrahydrofuranlösung - Google Patents
Verfahren zur Verminderung des Wassergehaltes einer wäßrigen TetrahydrofuranlösungInfo
- Publication number
- DE2040089C3 DE2040089C3 DE2040089A DE2040089A DE2040089C3 DE 2040089 C3 DE2040089 C3 DE 2040089C3 DE 2040089 A DE2040089 A DE 2040089A DE 2040089 A DE2040089 A DE 2040089A DE 2040089 C3 DE2040089 C3 DE 2040089C3
- Authority
- DE
- Germany
- Prior art keywords
- tetrahydrofuran
- water
- solution
- aqueous
- water content
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/04—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
- C07D307/06—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms
- C07D307/08—Preparation of tetrahydrofuran
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Furan Compounds (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP44063840A JPS4920581B1 (enExample) | 1969-08-14 | 1969-08-14 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2040089A1 DE2040089A1 (de) | 1971-02-25 |
| DE2040089B2 DE2040089B2 (de) | 1974-08-01 |
| DE2040089C3 true DE2040089C3 (de) | 1982-06-09 |
Family
ID=13240924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2040089A Expired DE2040089C3 (de) | 1969-08-14 | 1970-08-12 | Verfahren zur Verminderung des Wassergehaltes einer wäßrigen Tetrahydrofuranlösung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3694465A (enExample) |
| JP (1) | JPS4920581B1 (enExample) |
| DE (1) | DE2040089C3 (enExample) |
| FR (1) | FR2058069A5 (enExample) |
| GB (1) | GB1313325A (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5249839B2 (enExample) * | 1973-05-31 | 1977-12-20 | ||
| JPS5293763A (en) * | 1976-02-04 | 1977-08-06 | Mitsubishi Chem Ind Ltd | Preparation of tetrahydrofuran |
| US4197248A (en) * | 1978-03-22 | 1980-04-08 | E. I. Du Pont De Nemours And Company | Reduction in chemical oxygen demand of water from crude tetrahydrofuran |
| US4348262A (en) | 1980-05-19 | 1982-09-07 | E. I. Du Pont De Nemours And Company | Refining tetrahydrofuran |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2366464A (en) * | 1945-01-02 | Manufacture of tetbahydbofuman | ||
| US1466435A (en) * | 1921-12-29 | 1923-08-28 | Us Ind Alcohol Co | Process of dehydrating organic liquids |
| US2251895A (en) * | 1937-10-29 | 1941-08-05 | Gen Aniline & Film Corp | Production of tetrahydrofuranes |
| US2251835A (en) * | 1939-05-05 | 1941-08-05 | Gen Aniline & Film Corp | Production of tetrahydrofurane from 1,4-butylene glycol |
| US2795591A (en) * | 1953-02-25 | 1957-06-11 | Du Pont | Compound and process for drying tetrahydrofuran |
| US2779721A (en) * | 1954-02-17 | 1957-01-29 | Dow Chemical Co | Method of drying butylene oxides |
| US3138545A (en) * | 1955-05-10 | 1964-06-23 | Fmc Corp | Dehydration of nu, nu-dimethylhydrazine by distillation in the presence of an alkali |
-
1969
- 1969-08-14 JP JP44063840A patent/JPS4920581B1/ja active Pending
-
1970
- 1970-08-11 US US63024A patent/US3694465A/en not_active Expired - Lifetime
- 1970-08-12 DE DE2040089A patent/DE2040089C3/de not_active Expired
- 1970-08-13 GB GB3897470A patent/GB1313325A/en not_active Expired
- 1970-08-13 FR FR7029921A patent/FR2058069A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2040089A1 (de) | 1971-02-25 |
| JPS4920581B1 (enExample) | 1974-05-25 |
| GB1313325A (en) | 1973-04-11 |
| DE2040089B2 (de) | 1974-08-01 |
| US3694465A (en) | 1972-09-26 |
| FR2058069A5 (enExample) | 1971-05-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |