Poly(dimethyl diallyl ammonium chloride) (PDMDAAC), a strong cationic polyelectrolyte, is widely used in various fields:

• ​Water Treatment: As a flocculant for drinking water purification and sewage treatment, it removes suspended particles, decolorizes, and eliminates organic matter
• ​Paper Industry: Serves as a paper strength enhancer, retention aid, and filter improver, increasing pulp retention and paper durability
• ​Textile & Dyeing: Acts as a formaldehyde-free fixing agent to improve dye fastness and as an antistatic agent
• ​Oilfield Chemicals: Used in drilling fluid treatment, water shutoff agents, and clay stabilizers to enhance drilling efficiency and reservoir protection
• ​Daily Chemicals: Functions as a conditioning agent in shampoos, antistatic agents, and additives in skincare products
• ​Other Applications: Modifies synthetic resins to impart antistatic properties or is used for industrial wastewater decolorization

Its mechanism of action is primarily based on electro-neutralization and adsorption bridging, achieving flocculation and purification effects, with good compatibility with other chemical agents