BE638889A - - Google Patents

Info

Publication number
BE638889A
BE638889A BE638889DA BE638889A BE 638889 A BE638889 A BE 638889A BE 638889D A BE638889D A BE 638889DA BE 638889 A BE638889 A BE 638889A
Authority
BE
Belgium
Prior art keywords
emi
reactor
dispersion
parts
monomer
Prior art date
Application number
Other languages
French (fr)
Priority date (The priority date 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 date listed.)
Publication of BE638889A publication Critical patent/BE638889A/fr

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F18/00Homopolymers 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 an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
    • C08F18/02Esters of monocarboxylic acids
    • C08F18/04Vinyl esters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Description

       

   <EMI ID=1.1> 

  
 <EMI ID=2.1>  

  
La présente invention * pour objet un procédé simple

  
 <EMI ID=3.1> 

  
La dispersion est évacué* du réacteur par le réfrigérant au [pound],or  <EMI ID=4.1>   <EMI ID=5.1> 

  
La proportion des émulsifiants en phase aqueuse est comprise  entre 0,05 et 10 parti** en poids, par rapport à 100 parties en poids du monomère et, de préférence, 0,1 à 5 parties en 

  
 <EMI ID=6.1> 

  
du système redox soit dissous dans la phase aqueuse et que l'autre agit ajouté séparément en petites quantités dotées dans

  
 <EMI ID=7.1> 

  
aqueuse et on introduit séparément une solution aqueuse de bisulfite de potassium en petites quantités dosées dans l'espace

  
 <EMI ID=8.1>  entre

  
 <EMI ID=9.1> 

  

 <EMI ID=10.1> 


  

 <EMI ID=11.1> 
 

  

 <EMI ID=12.1> 


  

 <EMI ID=13.1> 


  
 <EMI ID=14.1> 

  
On peut faire fonctionner le réacteur soit en régime Isotherme, soit en régime adiabatiques Dans l'opération en isotherme, des serpentin* refroidisseur* ou réchauffeurs tout Installés dans le réacteur et les serpentins sont alimenté$ en

  
 <EMI ID=15.1>   <EMI ID=16.1> 

  

 <EMI ID=17.1> 


  
 <EMI ID=18.1> 

  

 <EMI ID=19.1> 


  
 <EMI ID=20.1> 

  
litre par heure. AuTur et à mesure que le monomère et la phase aqueuse sont ajoutés

  
 <EMI ID=21.1> 

  
supérieure du réacteur* Four maintenir la teneur en monomère résiduel de la dispersion aussi basse que possible, on envoie la dispersion dans un second réacteur muni d'une enveloppe

  
 <EMI ID=22.1> 

  
Propriétés de la dispersion 

  

 <EMI ID=23.1> 


  
 <EMI ID=24.1> 

  

 <EMI ID=25.1> 


  
Les exemples 2 à 12 sont réalisés de la note manière dans le réacteur décrit ci-dessus. Les exemples qui suivent ne donnent que les Conditions réactionnelles modifiées ainsi que des résultats des essais sous forme de tableaux en vue d'une meilleure clarté. 

Exemple 2 

  
Phase monomère 100 parties d'acétate de vinyle 
 <EMI ID=26.1> 
 
 <EMI ID=27.1> 
 
 <EMI ID=28.1> 
 
 <EMI ID=29.1> 
 
 <EMI ID=30.1> 
 
 <EMI ID=31.1> 
 
 <EMI ID=32.1> 
 
 <EMI ID=33.1> 
 
 <EMI ID=34.1> 
 <EMI ID=35.1> 

  
température de l'enveloppe et la circulation sont réglât$ d'une manière telle que la température dans la partie intérieure du

  
 <EMI ID=36.1>   <EMI ID=37.1> 

  
atmosphères), d'où elle est envoyée au réservoir.  Propriétés de la dispersion t 

  

 <EMI ID=38.1> 


  
 <EMI ID=39.1> 

  
 <EMI ID=40.1> 



   <EMI ID = 1.1>

  
 <EMI ID = 2.1>

  
The present invention * relates to a simple process

  
 <EMI ID = 3.1>

  
The dispersion is evacuated * from the reactor by the condenser at [pound], or <EMI ID = 4.1> <EMI ID = 5.1>

  
The proportion of emulsifiers in the aqueous phase is between 0.05 and 10 parts ** by weight, relative to 100 parts by weight of the monomer and, preferably, 0.1 to 5 parts by weight.

  
 <EMI ID = 6.1>

  
of the redox system is dissolved in the aqueous phase and the other acts added separately in small amounts provided in

  
 <EMI ID = 7.1>

  
aqueous solution and separately introduced an aqueous solution of potassium bisulfite in small metered quantities into the space

  
 <EMI ID = 8.1> between

  
 <EMI ID = 9.1>

  

 <EMI ID = 10.1>


  

 <EMI ID = 11.1>
 

  

 <EMI ID = 12.1>


  

 <EMI ID = 13.1>


  
 <EMI ID = 14.1>

  
The reactor can be operated either in isothermal or adiabatic mode In the isothermal operation, coils * cooler * or heaters all installed in the reactor and the coils are supplied with

  
 <EMI ID = 15.1> <EMI ID = 16.1>

  

 <EMI ID = 17.1>


  
 <EMI ID = 18.1>

  

 <EMI ID = 19.1>


  
 <EMI ID = 20.1>

  
liter per hour. AuTur and as the monomer and water phase are added

  
 <EMI ID = 21.1>

  
upper reactor * Oven keep the residual monomer content of the dispersion as low as possible, the dispersion is sent to a second reactor fitted with a jacket

  
 <EMI ID = 22.1>

  
Dispersion properties

  

 <EMI ID = 23.1>


  
 <EMI ID = 24.1>

  

 <EMI ID = 25.1>


  
Examples 2 to 12 are carried out in the same manner in the reactor described above. The examples which follow give only the modified reaction conditions as well as test results in tabular form for the sake of clarity.

Example 2

  
Monomer phase 100 parts of vinyl acetate
 <EMI ID = 26.1>
 
 <EMI ID = 27.1>
 
 <EMI ID = 28.1>
 
 <EMI ID = 29.1>
 
 <EMI ID = 30.1>
 
 <EMI ID = 31.1>
 
 <EMI ID = 32.1>
 
 <EMI ID = 33.1>
 
 <EMI ID = 34.1>
 <EMI ID = 35.1>

  
temperature of the casing and circulation are regulated in such a way that the temperature in the interior part of the

  
 <EMI ID = 36.1> <EMI ID = 37.1>

  
atmospheres), from where it is sent to the tank. Properties of dispersion t

  

 <EMI ID = 38.1>


  
 <EMI ID = 39.1>

  
 <EMI ID = 40.1>


    

Claims (1)

<EMI ID=41.1> <EMI ID = 41.1>
BE638889D 1963-10-18 BE638889A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR951029A FR1372270A (en) 1963-10-18 1963-10-18 Process for the continuous preparation of aqueous dispersions of polymers

Publications (1)

Publication Number Publication Date
BE638889A true BE638889A (en)

Family

ID=8814662

Family Applications (1)

Application Number Title Priority Date Filing Date
BE638889D BE638889A (en) 1963-10-18

Country Status (2)

Country Link
BE (1) BE638889A (en)
FR (1) FR1372270A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1567996A (en) * 1967-12-29 1969-05-23

Also Published As

Publication number Publication date
FR1372270A (en) 1964-09-11

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