GB291748A - Manufacture of divinyl and homologues thereof - Google Patents
Manufacture of divinyl and homologues thereofInfo
- Publication number
- GB291748A GB291748A GB16584/28A GB1658428A GB291748A GB 291748 A GB291748 A GB 291748A GB 16584/28 A GB16584/28 A GB 16584/28A GB 1658428 A GB1658428 A GB 1658428A GB 291748 A GB291748 A GB 291748A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alums
- vapour
- butadiene
- potash
- butylene glycol
- 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
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/20—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms
- C07C1/24—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms by elimination of water
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- C07C2527/02—Sulfur, selenium or tellurium; Compounds thereof
- C07C2527/053—Sulfates or other compounds comprising the anion (SnO3n+1)2-
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
291,748. I. G. Farbenindustrie Akt.- Ges. June 7, 1927, [Convention date]. Butadiene and its homologues are obtained by passing the vapour of 1 : 3-butylene glycol or a homologue thereof, preferably mixed with a diluting gas or vapour such as steam, over dehydrated alum at a raised temperature. In an example, butylene glycol containing 20 per cent of water is vaporized and passed through a tube heated to 240-250‹ C. and containing potash dehydrated at 150-180‹ C. A small quantity of oily intermediate products (allyl carbinol and other unsaturated alcohols and ethers thereof) are separated and may be again passed over the catalyst to produce more butadiene, and the hydrocarbon is liquefied by strong cooling or pressure. In a similar manner a-a-dimethylbutadiene may be prepared from 2-methylpentandiol-1-2 : 4. German Specification 261,642 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) states that ammonium alum or a mixture of alums may be used instead of potash alums. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE291748X | 1927-06-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB291748A true GB291748A (en) | 1929-08-29 |
Family
ID=6069626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16584/28A Expired GB291748A (en) | 1927-06-07 | 1928-06-07 | Manufacture of divinyl and homologues thereof |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB291748A (en) |
-
1928
- 1928-06-07 GB GB16584/28A patent/GB291748A/en not_active Expired
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