Synthesis of High-quality Ammonium/Sodium Polyacrylate Dispersant and Its Application in Abrasive Grade GCC

Low molecular weight ammonium/sodium polyacrylate with narrow molecular weight distribution were synthesized and applied in wet grinding calcium carbonate.The characteristics of the synthetic process were to employ complex initiator including persulfate,and new regulator to prepare product with low relative molecular weight and narrow molecular weight distribution.At the same time the synthesized product was used as a high-efficiency dispersant of GCC slurry.It was indicated that the product has an excellent dispersed effect and could replace imported product in grinding calcium carbonate slurry.