Polyquaternary ammonium salt PQ (Polyquaternium PQ) is a class of water-soluble polymers with quaternary ammonium structure, which is usually used as water treatment agent, bactericidal and algaecidal agent, surfactant and so on. These polymers are cationic in nature, mainly composed of positively charged quaternary ammonium groups. The following are the performance characteristics and main applications of polyquaternary ammonium salt PQ:

Performance Characteristics:

Cationic nature: Polyquaternium PQ has a cationic nature that gives it a positive charge in aqueous solution. This gives it the ability to adsorb onto negatively charged surfaces such as particles and fibres.

Bactericidal: The cation cooperates with the negatively charged electrostatic bonding on the algal cell wall to destroy and kill the algal cells.

Surface Activity: Due to the presence of quaternary ammonium groups, polyquaternary ammonium salts PQ show good surface activity, which helps to improve wetting, dispersion and emulsification properties.

Viscosity Regulation: Polyquaternium PQ can form network structure in aqueous solution, thus regulating the viscosity of liquid to a certain extent.

Main Applications:

Water treatment agent: Polyquaternium PQ is a high cationic charge, low molecular weight, water-soluble polymer, as a water treatment agent, Polyquaternium PQ can help to purify the water source and prevent the precipitation and fixation of impurities in the water. It is mainly used for coagulation and destabilisation in the process of water treatment. The number of cationic charges provided per unit mass is more than that of the cationic products commonly used nowadays, and it is especially effective in treating organic wastewater rich in protein and fine fibre.

Bactericide and algaecide: It can be used for bactericide and algaecide, and can be used in acidic, alkaline and hard water environment.

Scale inhibitor and dispersant: Polyquaternium PQ is commonly used as a scale inhibitor, which can prevent the precipitation of hard water ions in water and prevent the scaling of pipes and equipment. At the same time, it can also be used as a dispersant to help maintain the dispersion of solid particles.

Pulp and Paper Industry: In the pulp and paper industry, Polyquaternium PQ is used as a scale inhibitor and wet strength agent for pulp, which helps to improve the quality and performance of paper.

Softeners and static eliminators: Due to its cationic nature, polyquaternium PQ is often added to textile softeners to improve the feel of textiles. In addition, it can be used as a static eliminator.

Please note that the specific properties and applications of Polyquaternium PQ may vary depending on its specific chemical structure and preparation method.

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