GB825034A - Improvements in or relating to the production of 4:4-dimethyl-meta-dioxan - Google Patents
Improvements in or relating to the production of 4:4-dimethyl-meta-dioxanInfo
- Publication number
- GB825034A GB825034A GB9216/58A GB921658A GB825034A GB 825034 A GB825034 A GB 825034A GB 9216/58 A GB9216/58 A GB 9216/58A GB 921658 A GB921658 A GB 921658A GB 825034 A GB825034 A GB 825034A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formaldehyde
- mixture
- isobutene
- amount
- dioxan
- 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
- C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D319/04—1,3-Dioxanes; Hydrogenated 1,3-dioxanes
- C07D319/06—1,3-Dioxanes; Hydrogenated 1,3-dioxanes not condensed with other rings
Abstract
4,4-Dimethyl-meta-dioxan is produced from a mixture of aliphatic hydrocarbons having up to 4 carbon atoms in their molecules, the mixture containing isobutene and other olefines, by reacting the mixture under a pressure such that the partial pressure of isobutene in the mixture is from 1/50 to 15 atmospheres and at a temperature of 10 DEG to 85 DEG C. with formaldehyde in the presence of an aqueous solution of a strong mineral acid, the amount of formaldehyde used being more than 2 mols. per mol. of isobutene in the mixture, the quantity of water present being from 1 to 10 times the weight of formaldehyde used and the amount of strong mineral acid used being from 5 to 75% by weight of the total amount of water and formaldehyde. The formaldehyde may be used in the form of its polymers such as paraformaldehyde. The preferred hydrocarbon mixtures used as starting materials are the C4 and the C3 + C4 gas oil cracking frac tions which contain paraffinic hydrocarbons in addition to various olefines including isobutene.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR825034X | 1957-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB825034A true GB825034A (en) | 1959-12-09 |
Family
ID=9282124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9216/58A Expired GB825034A (en) | 1957-03-22 | 1958-03-21 | Improvements in or relating to the production of 4:4-dimethyl-meta-dioxan |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB825034A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233880B (en) * | 1960-06-29 | 1967-02-09 | Bayer Ag | Process for the production of 4,4-dimethyl-1,3-dioxane |
| CN100586942C (en) * | 2008-01-04 | 2010-02-03 | 万华实业集团有限公司 | Production method of dioxane |
-
1958
- 1958-03-21 GB GB9216/58A patent/GB825034A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233880B (en) * | 1960-06-29 | 1967-02-09 | Bayer Ag | Process for the production of 4,4-dimethyl-1,3-dioxane |
| CN100586942C (en) * | 2008-01-04 | 2010-02-03 | 万华实业集团有限公司 | Production method of dioxane |
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