GB508548A - - Google Patents
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- Publication number
- GB508548A GB508548A GB508548DA GB508548A GB 508548 A GB508548 A GB 508548A GB 508548D A GB508548D A GB 508548DA GB 508548 A GB508548 A GB 508548A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- potassium
- tetrahydrofuranes
- glycol
- sulphates
- 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.)
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Abstract
508,548. Tetrahydrofuranes ; 1.4 butyleme glycol. JOHNSON, G. W. (1. G. Farbenindustrie Akt.-Ges.) 30, 1937, No. 36128. [Class 2 (iii)] Tetrahydrofuranes are prepared by heating 1.4 butylene glycol or its C-alkyl, aralkyl, cyclo. alkyl or aryl substitution products in the liquid, state with one or more of the solid dehydration catalysts hereinafter specified to such a temperature that the tetrahydrofurane and water distil off.. The catalysts used are oxides of aluminium, zirconium or thorium, sulphates of aluminium and copper, potassium aluminium sulphate, potassium pyrosulphate, phosphates of aluminium, iron, cerium and silver having a neutral reaction, chlorides of magnesium, calcium, zinc and aluminium, silica gel, bleaching earths, organic acids, e.g. oxalic or. p-toluene sulphonic, and. acid anhydrides. The tetrahydrofuranes may be obtained by fractional distillation with or without previous drying. Aqueous solutions of 1.4 butylene glycol, obtained by hydrogenation of butene.2-diol- 1.4 in aqueous solution, may be used. In examples, the glycol is heated with anhydrous chlorides of Al, Zn, Mg, and Ca, p-toluene sulphonic acid, oxalic acid, succinic or maleic anhydride, sulphates of Cu and AI, potassium aluminium sulphate, potassium pyrosulphate, active aluminium oxide, and bauxite, at temperatures 'which vary from 126-205‹ C. Specification 407,035 is referred to.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB508548A true GB508548A (en) |
Family
ID=1747718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB508548D Active GB508548A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB508548A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2795591A (en) * | 1953-02-25 | 1957-06-11 | Du Pont | Compound and process for drying tetrahydrofuran |
| US5917061A (en) * | 1998-01-15 | 1999-06-29 | Dairen Chemical Corporation | Process for producing cyclic ethers by liquid phase reaction |
| US7396945B1 (en) * | 2007-02-16 | 2008-07-08 | Hyosung Corporation | Method of preparing tetrahydrofuran |
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0
- GB GB508548D patent/GB508548A/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2795591A (en) * | 1953-02-25 | 1957-06-11 | Du Pont | Compound and process for drying tetrahydrofuran |
| US5917061A (en) * | 1998-01-15 | 1999-06-29 | Dairen Chemical Corporation | Process for producing cyclic ethers by liquid phase reaction |
| US7396945B1 (en) * | 2007-02-16 | 2008-07-08 | Hyosung Corporation | Method of preparing tetrahydrofuran |
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