反应详情

This step is to polymerize a shell part around the core part prepared from the third step. Firstly, 197.5 g of ion exchange water, 117.75 g of methyl methacrylate, 9.25 g of ethyl acrylate and 13.8 g of potassium stearate (in 8 wt % solution) were mixed to prepare a pre-emulsion. To the latex prepared from the third step, the pre-emulsion and 69.2 g of potassium persulfate (in 1 wt % solution) were simultaneously and continuously introduced for 1 hour to carry out the reaction of the shell part. While the temperature in the reactor was kept constantly at 70° C., the reaction was aged for 1 hour to complete the polymerization. The final product had a particle size of 190 nm.

1. customto polymerize a shell part around the core part
2. customprepared from the third step
3. customto prepare a pre-emulsion
4. customTo the latex prepared from the third step
5. additioncontinuously introduced for 1 hour
6. customthe reaction of the shell part
7. customwas kept constantly at 70° C.
8. customthe polymerization