BE448885A - - Google Patents
Info
- Publication number
- BE448885A BE448885A BE448885DA BE448885A BE 448885 A BE448885 A BE 448885A BE 448885D A BE448885D A BE 448885DA BE 448885 A BE448885 A BE 448885A
- Authority
- BE
- Belgium
- Prior art keywords
- emi
- chloride
- dichlorisobutane
- methylallyl chloride
- methylallyl
- Prior art date
Links
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
Description
<EMI ID=1.1>
Il est connu de préparer des composés aliphatiques non saturés en faisant passer à température élevée les vapeurs de composes aliphatiques chlorés, sur des catalyseurs éliminant du chlorure d'hydrogène, par exemple sur du gel de silice ou sur du charbon actif. Lorsqu'on essaye de préparer de cette manière
<EMI ID=2.1>
et par une décomposition de la matière première ou de départ.
Or, il a été trouvé suivant la présente invention que l'on peut éviter ces défauts dans une forte mesure et obtenir comme produit principal du chlorure de méthylallyle par l'élimination du chlorure d'hydrogène à partir du 1,2-dichlorisobutane, lorsqu'on
<EMI ID=3.1>
chambre* vides ou chargées de corps de remplissage, qui ne renferment pas de catalyseurs provoquant une élimination de chlorure d'hydrogène.
On travaillera généralement à des températures situées
<EMI ID=4.1>
dépend de la vitesse avec laquelle la matière en traitement passe par l'installation, respectivement du temps de séjour dans cette dernière. Plus la vitesse de passage de la matière en traitement est grande, plus haute peut être la température choisie et vice versa. On travaille utilement à la pression ordinaire, mais la réaction peut être exécutée aussi à une pression réduite ou accrue. On peut aussi faire un usage concomitant de gaz diluants inertes, par exemple de l'azote.
Comme mentionné au début, le présent procédé convient
<EMI ID=5.1>
<EMI ID = 1.1>
It is known practice to prepare unsaturated aliphatic compounds by passing the vapors of chlorinated aliphatic compounds at high temperature, over catalysts removing hydrogen chloride, for example over silica gel or over activated carbon. When we try to prepare this way
<EMI ID = 2.1>
and by decomposing the raw or starting material.
However, it has been found according to the present invention that these defects can be avoided to a great extent and obtained as the main product of methylallyl chloride by the elimination of hydrogen chloride from 1,2-dichlorisobutane, when 'we
<EMI ID = 3.1>
chamber * empty or loaded with fillers, which do not contain catalysts causing removal of hydrogen chloride.
We will generally work at temperatures situated
<EMI ID = 4.1>
depends on the speed with which the material being treated passes through the installation, respectively the residence time in the latter. The greater the speed of passage of the material in treatment, the higher the temperature chosen and vice versa. It is useful to work at ordinary pressure, but the reaction can also be carried out at reduced or increased pressure. It is also possible to make concomitant use of inert diluting gases, for example nitrogen.
As mentioned at the beginning, the present process is suitable
<EMI ID = 5.1>
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE890316X | 1942-01-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE448885A true BE448885A (en) |
Family
ID=6837113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE448885D BE448885A (en) | 1942-01-02 |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE448885A (en) |
FR (1) | FR890316A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108299151A (en) * | 2018-02-09 | 2018-07-20 | 浙江大学 | A method of 2- methallyl chlorides are prepared by bis- chlorolifarinas of 1,2- |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2642464A (en) * | 1948-05-29 | 1953-06-16 | Shell Dev | Production of methallyl halides |
-
0
- BE BE448885D patent/BE448885A/fr unknown
-
1943
- 1943-01-22 FR FR890316D patent/FR890316A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108299151A (en) * | 2018-02-09 | 2018-07-20 | 浙江大学 | A method of 2- methallyl chlorides are prepared by bis- chlorolifarinas of 1,2- |
US11319267B2 (en) | 2018-02-09 | 2022-05-03 | Zhejiang University | Method for preparing 2-methylallyl chloride from 1,2-dichloroisobutane |
Also Published As
Publication number | Publication date |
---|---|
FR890316A (en) | 1944-02-04 |
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