Poly(dimethyldiallylammonium chloride) is a cationic polymer, which is used as a formaldehyde-free color fixing agent in textile dyeing and finishing process, and it is able to form a protective film on fabrics and improve dyeing fastness. The mechanism of action and performance characteristics are introduced below:

Mechanism of action:

The positively charged groups of the polymer interact with the negatively charged dye molecules to form a stable and long-lasting bond. The film not only enhances the adhesion of the dye to the fabric, but also improves the overall fastness performance of the dyed material.

Versatility in textile applications:

The versatility of poly(dimethyldiallylammonium chloride) is also reflected in its compatibility with a wide range of textile fibers, including cotton, polyester and blends. Its role in improving dye fastness makes it suitable for a wide range of textile applications from apparel and home textiles to technical textiles.

Process Efficiency

The use of poly(dimethyldiallylammonium chloride) in textile dyeing and finishing contributes to process efficiency. The polymer's film-forming properties help to distribute the dye evenly across the fabric, reducing the potential for uneven coloration. It requires lower dosage than other traditional color fixatives, which reduces cost and environmental impact.


Textiles treated with polydimethyl diallylammonium chloride have good wash fastness, light fastness and rubbing fastness.

Environmentally friendly:

Dimethyldiallylammonium chloride is biodegradable and non-toxic, making it a safer choice for workers and the environment.

Related product: Poly(dimethyldiallylammonium chloride)