BE566535A - - Google Patents
Info
- Publication number
- BE566535A BE566535A BE566535DA BE566535A BE 566535 A BE566535 A BE 566535A BE 566535D A BE566535D A BE 566535DA BE 566535 A BE566535 A BE 566535A
- Authority
- BE
- Belgium
- Prior art keywords
- emi
- polymerization
- carried out
- vinyl chloride
- monomer
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F14/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F14/02—Monomers containing chlorine
- C08F14/04—Monomers containing two carbon atoms
- C08F14/06—Vinyl chloride
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
La présente invention concerne un procédé-nouveau de polymérisation du chlorure de vinyle et les polymères obtenus par ce procédé, dans lequel il est fait usage de nouveaux catalyseurs particulièrement actifs et susceptibles de permettre la polymérisation du chlorure de vinyle à basses températures sous pression atmosphérique.
Le procédé, faisant l'objet de l'invention, consiste à polymériser le chlorure de vinyle en présence d'un catalyseur cons-
<EMI ID=1.1>
où R représente un radical alkyle, n étant un nombre entier égal
<EMI ID=2.1>
On peut utiliser, par exemple, des boranes ou des boranes alkylés, comme catalyseurs.
La quantité de catalyseur à mettre en oeuvre est de l'or-
<EMI ID=3.1>
La polymérisation du chlorure de vinyle suivant le procédé de l'invention, peut être réalisée en masse ou en présence d'un milieu organique inerte- Suivant la température à laquelle est réalisée la polymérisation, on opère.dans un récipient sous la pression atmosphérique ou en autoclave sous une pression supérieure à. la pression atmosphérique.
Les polymères obtenus conformément au présent procédé
se distinguent par un taux de cristallinité élevé et une résistance thermique améliorée.
L'invention est illustrée par l'exemple suivant; il doit être bien entendu qu'il ne limite en rien la présente invention qui est susceptible de nombreuses variantes qui ne sortent pas de son cadre.
EXEMPLE.-
Dans un autoclave muni d'un agitateur, on dispose, à
l'abri de l'air, 500 g de chlorure de vinyle et 1 litre d'hexane normal, le tout étant maintenu à 0[deg.]C. On y introduit 3 g de diméthyl-
<EMI ID=4.1>
tation pendant toute la durée de la polymérisation. Au bout de 24 heures, on recueille 150 g de polychlorure de vinyle.
<EMI ID=5.1>
1.- Procédé de polymérisation du chlorure de vinyle, carac, térisé en ce que la polymérisation est effectuée en présence d'un catalyseur constitué d'un dérivé de bore répondant à la formule
<EMI ID=6.1>
<EMI ID=7.1>
<EMI ID=8.1>
The present invention relates to a novel process for the polymerization of vinyl chloride and to the polymers obtained by this process, in which use is made of novel catalysts which are particularly active and capable of allowing the polymerization of vinyl chloride at low temperatures under atmospheric pressure.
The process, which is the subject of the invention, consists in polymerizing vinyl chloride in the presence of a solid catalyst.
<EMI ID = 1.1>
where R represents an alkyl radical, n being an equal integer
<EMI ID = 2.1>
Boranes or alkylated boranes can be used, for example, as catalysts.
The amount of catalyst to be used is gold
<EMI ID = 3.1>
The polymerization of vinyl chloride according to the process of the invention can be carried out in bulk or in the presence of an inert organic medium. Depending on the temperature at which the polymerization is carried out, the operation is carried out in a vessel at atmospheric pressure or in autoclave at a pressure greater than. atmospheric pressure.
The polymers obtained according to the present process
are distinguished by a high crystallinity rate and improved thermal resistance.
The invention is illustrated by the following example; it should of course be understood that it in no way limits the present invention, which is susceptible of numerous variants which do not go beyond its scope.
EXAMPLE.-
In an autoclave fitted with a stirrer, the
protected from air, 500 g of vinyl chloride and 1 liter of normal hexane, the whole being kept at 0 [deg.] C. 3 g of dimethyl-
<EMI ID = 4.1>
tation throughout the duration of the polymerization. After 24 hours, 150 g of polyvinyl chloride are collected.
<EMI ID = 5.1>
1.- Process for the polymerization of vinyl chloride, characterized in that the polymerization is carried out in the presence of a catalyst consisting of a boron derivative corresponding to the formula
<EMI ID = 6.1>
<EMI ID = 7.1>
<EMI ID = 8.1>
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE1230631X | 1958-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE566535A true BE566535A (en) |
Family
ID=3894670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE566535D BE566535A (en) | 1958-04-05 |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE566535A (en) |
FR (1) | FR1230631A (en) |
-
0
- BE BE566535D patent/BE566535A/fr unknown
-
1959
- 1959-04-03 FR FR791183A patent/FR1230631A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1230631A (en) | 1960-09-19 |
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