... oil 1,Molecular weight:300-2000 million 2,Solids content: 90% 3,PH value: 7-14 4,hydrolysis degree 20-30% PAM OIL ... OH or H +- CH2CR - - CH2CR - + NH3 CONH2 COOHPhysiochemical index1,Molecular weight:300-2000 million 2,Solids content ≥90% 3,PH value ... , metallurgy wastewater, sewage effluent coal washing, the best effect.Oil drilling, oil: could be modulated plugging agent, drilling, eor agent, eor ...