Reacción #324348

Ecuación de reacción

phenoxy ethylmethacrylate

methacrylic acid

methyl methacrylate

→

phenoxy ethylmethacrylate methylmethacrylate methacrylate

Rendimiento 163.3%

Disolventes

methyl ethyl ketone

methyl ethyl ketone

methyl ethyl ketone

Condiciones de reacción

Tratamiento posterior

1. 1
   Otroequipped with an agitator and a condenser
2. 2
   workup.ADDITIONwas added dropwise over 3 hours
3. 3
   workup.ADDITIONOnce the dropwise addition
4. 4
   Otrothe mixture was reacted for one more hour
5. 5
   workup.ADDITIONwas added
6. 6
   TemperaturaThe temperature was raised to 78° C.
7. 7
   Temperaturathe mixture was heated for 4 hours
8. 8
   OtroThe obtained reaction solution
9. 9
   Otrowas precipitated two times in large excess of hexane
10. 10
    Otrothe precipitated resin was dried

Procedimiento

(Synthesis of Water-Insoluble Polymer Dispersant P-1) 88 g of methyl ethyl ketone was added to a 1000 ml three-necked flask equipped with an agitator and a condenser, and was heated to 72° C. under a nitrogen atmosphere. To this, a solution of 0.85 g of dimethyl 2,2′-azobisisobutyrate, 50 g of phenoxy ethylmethacrylate, 13 g of methacrylic acid and 37 g of methyl methacrylate dissolved in 50 g of methyl ethyl ketone was added dropwise over 3 hours. Once the dropwise addition was completed, the mixture was reacted for one more hour, and then a solution of 0.42 g of dimethyl 2,2′-azobisisobutyrate dissolved in 2 g of methyl ethyl ketone was added. The temperature was raised to 78° C., and the mixture was heated for 4 hours. The obtained reaction solution was precipitated two times in large excess of hexane, and the precipitated resin was dried to obtain 96.5 g of phenoxy ethylmethacrylate/methylmethacrylate/methacrylate (copolymerization ratio [% by mass ratio]=50/37/13) copolymer (resin dispersant P-1).

Fuente