AT221813B

AT221813B - Process for the polymerization and / or copolymerization of polar compounds containing an ethylene double bond

Info

Publication number: AT221813B
Application number: AT638560A
Authority: AT
Original assignee: Solvay
Priority date: 1959-08-28
Filing date: 1960-08-22
Publication date: 1962-06-25

Description

  

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   Verfahren zur Polymerisation und bzw. oder Copolymerisation von eine Äthylendoppelbindung enthaltenden polaren Verbindungen 
Die vorliegende Erfindung betrifft ein Verfahren zur Polymerisation und bzw. oder Copolymerisation von eine Äthylendoppelbindung enthaltenden polaren Verbindungen sowie die nach diesem Verfahren erhaltenen Polymeren bzw. Copolymeren. Beim erfindungsgemässen Verfahren gelangen neue, ganz besonders wirksame Katalysatoren auf Grundlage organischer Borderivate zur Anwendung. 



   Das erfindungsgemässe Verfahren besteht darin, dass man Verbindungen der allgemeinen Formel 
 EMI1.1 
 
 EMI1.2 
 

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   Nachstehend wird das erfindungsgemässe Verfahren an Hand von nicht beschränkenden Beispielen näher beschrieben. 



     Beispiel l :   In   eine Proberöhre   aus Pyrexglas   werden 60 g auf-700C gekühltes, flüssiges Vinyl-   chlorid sowie 1 g   tert.-Butylborsäure   eingebracht. Dann schmilzt man die Proberöhre in der Flamme zu und bringt sie in ein auf   250C   gehaltenes thermostatisches Bad ein. Nach 20 Stunden erhält man Polyvinylchlorid in einer Ausbeute von   80ça.   



     Beispiel 2 :   Man verfährt wie in Beispiel   1,   doch wird an Stelle von tert. -Butylborsäure 1 g des trimeren zyklischen Anhydrids der tert.-Butylborsäure verwendet. Nach 4 Stunden erhält man Polyvinylchlorid in einer Ausbeute von   9Cf1/o.   



    PATENTANSPRÜCHE :    
1. Verfahren zur Polymerisation und bzw. oder Copolymerisation von mindestens eine Äthylendoppelbindung enthaltenden Verbindungen der allgemeinen Formel 
 EMI2.1 
 
 EMI2.2 
 lenwasserstoffradikale bedeuten, wobei mindestens eine der Gruppen   R,R R   und R4 eine polare Gruppe ist, dadurch gekennzeichnet, dass man die Polymerisation und bzw. oder die Copolymerisation in Gegenwart eines aus einer organischen Borverbindung bestehenden Katalysators aus der Gruppe der Monoalkylborsäuren und deren Anhydriden durchführt.



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   Process for the polymerization and / or copolymerization of polar compounds containing an ethylene double bond
The present invention relates to a process for the polymerization and / or copolymerization of polar compounds containing an ethylene double bond and the polymers or copolymers obtained by this process. In the process according to the invention, new, particularly effective catalysts based on organic boron derivatives are used.



   The inventive method consists in that one compounds of the general formula
 EMI1.1
 
 EMI1.2
 

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   The process according to the invention is described in more detail below using non-limiting examples.



     Example 1: 60 g of liquid vinyl chloride cooled to -700C and 1 g of tert-butyl boric acid are placed in a test tube made of Pyrex glass. The sample tube is then melted shut in the flame and placed in a thermostatic bath kept at 250C. After 20 hours, polyvinyl chloride is obtained in a yield of 80%.



     Example 2: The procedure is as in Example 1, but instead of tert. -Butylboric acid 1 g of the trimeric cyclic anhydride of tert-butylboronic acid is used. After 4 hours, polyvinyl chloride is obtained in a yield of 9Cf1 / o.



    PATENT CLAIMS:
1. Process for the polymerization and / or copolymerization of compounds of the general formula containing at least one ethylene double bond
 EMI2.1
 
 EMI2.2
 denote hydrogen radicals, where at least one of the groups R, R R and R4 is a polar group, characterized in that the polymerization and / or the copolymerization is carried out in the presence of a catalyst consisting of an organic boron compound from the group of monoalkylboronic acids and their anhydrides.

Claims

2. The method according to claim 1, characterized in that the alkyl group of the catalyst is branched.

3. The method according to claim 1, characterized in that tert-butyl boric acid is used as the catalyst.

4. The method according to claim 1, characterized in that the anhydride of tert-butyl boric acid is used as the catalyst.

5. The method according to claim 1, characterized in that the catalyst is used in an amount of 0.1 to 3 wt .-%, based on the amount of the monomer or monomers to be polymerized.

6. The method according to claim 1, characterized in that the polymerization and / or copolymerization is carried out as a block polymerization.

7. The method according to claim 1, characterized in that the polymerization and / or copolymerization is carried out in solution in an organic medium.

8. The method according to claim 1, characterized in that the polymerization and / or copolymerization is carried out in emulsion.

9. The method according to claim 1, characterized in that the polymerization and / or copolymerization is carried out as bead polymerization.

10. The method according to claim 1, characterized in that the catalyst is activated by supplying oxygen in an amount of 0.001 to 0.01 wt .- b, based on the amount of the monomer or monomers to be polymerized.

11. The method according to any one of claims 1 to 10, characterized in that vinyl chloride is used as the monomer to be polymerized.