Polyacrylamide series products are water-soluble linearity high polymers. It is almost insoluble in benzene, ether, lipin and acetone and other common organic solvent and soluble easily in water. With flocculability, thickening, shear performance, resistance-diminishing performance and dispersivity, it is widely used in oil extraction, mineral separation, coal washing, metallurgy, chemical industry, papermaking, spinning, sugar manufacturing, medicine, environmental protection, building materials and agriculture industries.