GB1525438A - Process for the production of 2,3-dichloro-1,3-butadiene - Google Patents
Process for the production of 2,3-dichloro-1,3-butadieneInfo
- Publication number
- GB1525438A GB1525438A GB4144776A GB4144776A GB1525438A GB 1525438 A GB1525438 A GB 1525438A GB 4144776 A GB4144776 A GB 4144776A GB 4144776 A GB4144776 A GB 4144776A GB 1525438 A GB1525438 A GB 1525438A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dichloro
- butadiene
- catalyst
- butene
- oct
- 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
- C07C21/00—Acyclic unsaturated compounds containing halogen atoms
- C07C21/02—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds
- C07C21/19—Halogenated dienes
- C07C21/20—Halogenated butadienes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/42—Use of additives, e.g. for stabilisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
1525438 2,3-Dichloro-1,3-butadiene BAYER AG 6 Oct 1976 [9 Oct 1975] 41447/76 Heading C2C 2,3-Dichloro-1,3-butadiene is obtained by the addition of 0À1-50 wt. per cent of a phasetransfer catalyst which is a quaternary ammonium or phosphonium salt or at least a diorgano substituted sulphonium salt to a mixture of 2,3,4-trichloro-1-butene and an aqueous solution of alkali metal hydroxide, 0À05-10 parts by weight of the catalyst being used per 100 parts by weight of the halobutene, the reaction being conducted at -10 to +10‹ C., without any significant fluctuations, in the presence of O 2 . Preferably a continuation of at least one inhibitor soluble primarily in the monomer phase, e.g. phenothiazine and/or N-nitrosodiphenylamine and at least one inhibitor soluble in the aqueous phase, e.g. diethyl hydroxylamine are present. The molar ratio of butene to alkali metal hydroxide, e.g. NaOH is 1 : 1À05-1À5. The aqueous catalyst solution is preferably 0À5-10 wt. per cent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752545341 DE2545341C2 (en) | 1975-10-09 | 1975-10-09 | Process for the preparation of 2,3-dichlorobutadiene- (1,3) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1525438A true GB1525438A (en) | 1978-09-20 |
Family
ID=5958793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4144776A Expired GB1525438A (en) | 1975-10-09 | 1976-10-06 | Process for the production of 2,3-dichloro-1,3-butadiene |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5246006A (en) |
| BE (1) | BE847077A (en) |
| DE (1) | DE2545341C2 (en) |
| FR (1) | FR2327212A1 (en) |
| GB (1) | GB1525438A (en) |
| IT (1) | IT1069095B (en) |
| NL (1) | NL7611042A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5791931A (en) * | 1980-11-27 | 1982-06-08 | Denki Kagaku Kogyo Kk | Preparation of 2,3-dichlorobutadiene-1,3 |
| DE3208796A1 (en) * | 1982-03-11 | 1983-09-22 | Bayer Ag, 5090 Leverkusen | Process for the preparation of 2,3-dichlorobutadiene- (1,3) |
| US4875314A (en) * | 1987-01-06 | 1989-10-24 | Boilen Kenneth T | Connection system for preventing uplift of shear walls |
| JPH0819719B2 (en) * | 1990-02-07 | 1996-02-28 | ミサワホーム株式会社 | Connecting plates for housing units |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1217947B (en) * | 1964-10-07 | 1966-06-02 | Bayer Ag | Process for the preparation of 2, 3-dichlorobutadiene- (1, 3) |
| NL134406C (en) * | 1966-06-03 | |||
| FR1525661A (en) * | 1966-06-03 | 1968-05-17 | Du Pont | Improvements to dehydrohalogenation reactions of organic compounds |
| GB1283651A (en) * | 1970-03-24 | 1972-08-02 | Bp Chem Int Ltd | Halogenated unsaturated hydrocarbons |
| DE2204708C3 (en) * | 1972-02-01 | 1975-10-16 | Wsesojusnyj Nautschno-Issledowatelskij I Projektnyj Institut Polimernych Produktow, Eriwan (Sowjetunion) | Process for the preparation of 2,3-dichlorobutadiene- (1,3) |
| JPS4886805A (en) * | 1972-02-23 | 1973-11-15 | ||
| JPS4970910A (en) * | 1972-10-04 | 1974-07-09 |
-
1975
- 1975-10-09 DE DE19752545341 patent/DE2545341C2/en not_active Expired
-
1976
- 1976-10-06 NL NL7611042A patent/NL7611042A/en not_active Application Discontinuation
- 1976-10-06 GB GB4144776A patent/GB1525438A/en not_active Expired
- 1976-10-07 JP JP11993276A patent/JPS5246006A/en active Granted
- 1976-10-07 IT IT5162276A patent/IT1069095B/en active
- 1976-10-08 BE BE171340A patent/BE847077A/en not_active IP Right Cessation
- 1976-10-08 FR FR7630365A patent/FR2327212A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2327212A1 (en) | 1977-05-06 |
| FR2327212B1 (en) | 1980-05-23 |
| DE2545341A1 (en) | 1977-04-21 |
| BE847077A (en) | 1977-04-08 |
| DE2545341C2 (en) | 1983-02-10 |
| JPS623132B2 (en) | 1987-01-23 |
| NL7611042A (en) | 1977-04-13 |
| IT1069095B (en) | 1985-03-25 |
| JPS5246006A (en) | 1977-04-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |