Reaktion #467420

Reaktionsgleichung

AIVN

Isopar G

methyl methacrylate

methyl acrylate

2-(N,N-dimethylamino)ethyl methacrylate

2,2′-azobis(isovaleronitrile)

→

LA-1

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONTo the solution was dropwise added
2. 2
   workup.STIRRINGby stirring for 2 hours
3. 3
   Temperaturthe mixture was heated to temperature of 75° C.
4. 4
   workup.STIRRINGby stirring for 3 hours
5. 5
   Temperaturthe mixture was heated to temperature of 80° C.
6. 6
   workup.STIRRINGby stirring for 3 hours
7. 7
   TemperaturThe temperature of the reaction mixture was raised to 100° C.
8. 8
   workup.STIRRINGby stirring under a reduced pressure of 200 mmHg for 2 hours
9. 9
   workup.DISTILLATIONdistilling off the unreacted monomers
10. 10
    TemperaturAfter cooling the reaction mixture, it

Vorschrift

A mixed solution of 10 g of Resin for Dispersion Stabilization (P-1) shown below and 280 g of Isopar G was heated to temperature of 70° C. with stirring under a nitrogen gas stream. To the solution was dropwise added a mixture of 30 g of methyl methacrylate, 61 g of methyl acrylate, 9 g of 2-(N,N-dimethylamino)ethyl methacrylate and 1.5 g of 2,2′-azobis(isovaleronitrile) (abbreviated as AIVN) over a period of one hour, followed by stirring for 2 hours. Then, 1.0 g of AIVN was added to the reaction mixture and the mixture was heated to temperature of 75° C., followed by stirring for 3 hours. Then, 0.8 g of 2,2′-azc)bis(isobutyronitrile) (abbreviated as AIBN) was added to the mixture and the mixture was heated to temperature of 80° C., followed by stirring for 3 hours. The temperature of the reaction mixture was raised to 100° C., followed by stirring under a reduced pressure of 200 mmHg for 2 hours, thereby distilling off the unreacted monomers. After cooling the reaction mixture, it was passed through a nylon cloth of 200 mesh. The resulting white dispersion was a latex having a polymerization rate of 99% and an average particle size of 0.35 μm. The particle size was measured by CAPA-500 manufactured by Horiba Ltd. (hereinafter the same).

Quelle