GB873279A - A process for purifying conjugated diolefines - Google Patents
A process for purifying conjugated diolefinesInfo
- Publication number
- GB873279A GB873279A GB43557/59A GB4355759A GB873279A GB 873279 A GB873279 A GB 873279A GB 43557/59 A GB43557/59 A GB 43557/59A GB 4355759 A GB4355759 A GB 4355759A GB 873279 A GB873279 A GB 873279A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chloride
- bromide
- alkali metal
- diolefine
- chloro
- 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
- C07C7/00—Purification; Separation; Use of additives
- C07C7/148—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound
- C07C7/14833—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with metals or their inorganic compounds
- C07C7/14841—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with metals or their inorganic compounds metals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Conjugated diolefines are purified by adding separately an alkali metal or alloy thereof and an aliphatic, cycloaliphatic or araliphatic chlorinated, brominated or iodinated hydrocarbon containing at least one halogen bonded to a non-benzenoid carbon atom in the absence of oxygen and at a temperature precluding polymerization. Specified halides are ethyl iodide, n-butyl chloride or bromide, primary isobutyl chloride or bromide, n-hexyl or n-octyl chloride or bromide, dodecyl chloride or bromide, stearyl chloride, cyclohexyl chloride or bromide, 1-chloro-tetra- or deca-hydronaphthalene, benzyl chloride or bromide, b -chloro-ethyl-benzene, 1,4-dichlorobutane, 1,1,2-trichloroethane, p-di-chloromethyl-benzene, and benzal chloride or bromide, and they are used in amounts approximately equivalent to the alkali metal. The alkali metal is used in amounts of 0.1-5 parts per 100 parts by weight of diolefine and is preferably finely divided, e.g. less than 1 mm. diameter. Lithium, sodium and potassium are specified; they may be alloyed with another alkali metal or an alkaline earth metal. The process can be effected continuously or intermittently at 0-80 DEG C. by refluxing in the presence of the purifying agents and distilling off the purified diolefine; in continuous processes the diolefine is continuously added and continuously distilled off. Inert hydrocarbons may also be present.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE873279X | 1958-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB873279A true GB873279A (en) | 1961-07-19 |
Family
ID=6816363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB43557/59A Expired GB873279A (en) | 1958-12-24 | 1959-12-22 | A process for purifying conjugated diolefines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB873279A (en) |
-
1959
- 1959-12-22 GB GB43557/59A patent/GB873279A/en not_active Expired
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