Poly(dimethyl diallyl ammonium chloride) Other name: Polydadmac; PDMDAAC; PDADMAC, is a linear polymer with cationic groups. Therefore, it exhibits physical and chemical functions such as adsorption, charge neutralization, and ion exchange that neutral polymers have never had. Cationic polymers have relatively fixed positive charges, and have a strong binding force on the surfaces of negatively charged fibers, plastics, and other surfaces. It is widely used as an antistatic agent, spinning oil agent, flocculant, etc. Below are some typical applications.

Poly(Dimethyl diallyl ammonium Chloride)

（1） In the treatment of tap water and sewage, Poly(dimethyl diallyl ammonium chloride) is used as a high molecular flocculant, especially for high turbidity raw water in the flood season of river water. In order to effectively coagulate clay, silica, microorganisms, and hydrated metal oxides in the raw water, this product is usually selected for treatment.

（2） Polydadmac as a non formaldehyde and non pollution fixing agent, can be used in the fixation treatment of fabrics. However, during the fixation process, the reaction time and temperature as well as the pH of the fixation bath should be controlled to ensure good color fastness and improve the dyeing and fixation effects.

（3） Polydadmac is commonly used in the papermaking industry to improve the net hanging rate of pulp. It can be used as a retention and filter aid in papermaking auxiliaries, and as an antistatic coating for paper.

（4） Among daily chemicals, it can be used as a carding agent for shampoo, a wetting agent, a conditioning modifier for soap, and an antistatic agent.

（5） In oilfield chemicals, it can be used as flocculant, water shutoff agent, clay stabilizer, drilling fluid treatment agent, etc.

（6） The main functions of Polydadmac are electrical neutralization, adsorption, flocculation, purification, and decolorization, especially as a modifier for synthetic resins to impart electrical conductivity and antistatic properties.

（7） It has excellent compatibility with commonly used inorganic salt water purification agents (such as polyaluminum chloride, polyferric sulfate, aluminum sulfate, etc.), and can be compounded with various inorganic salt water purification agents to prepare a series of new and efficient composite water purification agents, achieving better water treatment quality and more effective cost control.