GB481612A - Improvements in the manufacture and production of butadiene - Google Patents
Improvements in the manufacture and production of butadieneInfo
- Publication number
- GB481612A GB481612A GB2562536A GB2562536A GB481612A GB 481612 A GB481612 A GB 481612A GB 2562536 A GB2562536 A GB 2562536A GB 2562536 A GB2562536 A GB 2562536A GB 481612 A GB481612 A GB 481612A
- Authority
- GB
- United Kingdom
- Prior art keywords
- butenes
- butylene
- chloride
- chlorine
- butadiene
- 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
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C11/00—Aliphatic unsaturated hydrocarbons
- C07C11/12—Alkadienes
- C07C11/16—Alkadienes with four carbon atoms
- C07C11/167—1, 3-Butadiene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/26—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only halogen atoms as hetero-atoms
- C07C1/30—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only halogen atoms as hetero-atoms by splitting-off the elements of hydrogen halide from a single molecule
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Butadiene is prepared by reacting butenes under mild conditions with less chlorine than is necessary for complete saturation of the double bonds, leading the products at above 500 DEG C. with such a high rate of flow over catalysts promoting splitting off of hydrogen chloride that the gas is exposed to the catalyst for less than one second, and treating the crude butadiene obtained at elevated temperatures with agents capable of binding hydrogen chloride and then, if desired, with agents binding acetylene. With initial materials containing a high proportion of butenes, an amount of chlorine a few per cent lower than the theoretical is used; with low proportions of butenes, only about 80 per cent of the chlorine theoretically necessary. Reaction may be effected in the gaseous phase at not more than about 70 DEG C. or in the liquid phase at below - 50 DEG C. Butene-containing mixtures comprising, for example, n- and iso-butenes and butane may be used. The butylene chloride, preferably after removal of any dissolved butane or butenes by heating, may be passed over silica gel, bleaching earths or active carbon or filler bodies which become laden with lustrous carbon under reaction conditions. Pressure may be atmospheric or less, and diluent gases such as nitrogen, hydrogen or steam may be present. In an example, 250 g./hr. of the butylene chloride are passed at 625 DEG C. and 20 mm. over silica gel. The crude butadiene may be passed over lime, soda lime or sodium hydroxide at about 350 DEG C., then treated if necessary with copper or mercury compounds, e.g. ammoniacal cuprous salt solution, and finally distilled to yield a readily polymerizable product. The first Provisional Specification includes an example wherein the butylene chloride is led with water at 450 DEG C. and 1 atmos. over titanium dioxide. The second Provisional Specification includes the treatment of butylene chlorides from any source with the catalysts splitting off hydrogen chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2562536A GB481612A (en) | 1936-09-21 | 1936-09-21 | Improvements in the manufacture and production of butadiene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2562536A GB481612A (en) | 1936-09-21 | 1936-09-21 | Improvements in the manufacture and production of butadiene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB481612A true GB481612A (en) | 1938-03-15 |
Family
ID=10230684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2562536A Expired GB481612A (en) | 1936-09-21 | 1936-09-21 | Improvements in the manufacture and production of butadiene |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB481612A (en) |
-
1936
- 1936-09-21 GB GB2562536A patent/GB481612A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2288580A (en) | Production of unsaturated compounds | |
| US2369377A (en) | Method of preparing sulphur compounds | |
| US1134677A (en) | Process of producing propylene from acetylene and methane. | |
| US2167203A (en) | Process of manufacture of ketones and alcohols from olefins | |
| GB481612A (en) | Improvements in the manufacture and production of butadiene | |
| US1894763A (en) | Purification of gases containing acetylene | |
| US2195747A (en) | Production of liquid polymerization products from olefins | |
| GB215789A (en) | Improvements in the process of making ammonia by catalysis | |
| US2402891A (en) | Preparation of diolefin sulphones | |
| US2103692A (en) | Process for the production of secondary and tertiary alkyl monochlorides | |
| US2028303A (en) | Production of organic disulphides | |
| US1637972A (en) | Process for the production of ethyl chloride | |
| US2658087A (en) | Chlorination of olefins in dilute mixtures | |
| US1973840A (en) | Purification of acetylene | |
| US2016572A (en) | Chlorinated organic compounds containing substantial amounts of acetylene tetrachloride | |
| US1510425A (en) | Process for the production of ethylesters of halogen sulphonic acids | |
| US2007478A (en) | Production of nitrates from metal halides | |
| US2119167A (en) | Method of making alkyl halides | |
| GB446411A (en) | A process for manufacturing halogenated hydrocarbons | |
| US2145058A (en) | Continuous production of polymerization products of acetylene | |
| US1545742A (en) | Process of making isopropyl chloride | |
| GB669981A (en) | Bleaching process for mineral oils and paraffins | |
| GB377193A (en) | Improvements in the separation of unsaturated hydrocarbons from gas mixtures containing the same | |
| US646019A (en) | Manufacture of gas. | |
| US2145059A (en) | Production of butadiene |