Is an anionic linear polymer material, soluble in hot and cold water into a transparent viscous solvents, in the oil drilling mu Poly Anionic Cellulose (PAC)Function of Poly Anionic Cellulose (PAC) in drilling fluidHigh substitution degree,good substitution evenness,high transparency,controllable viscosity and lower water loss Suitable for all kinds of water based slurry fresh water,sea water or ...