Polycarbodiimide is a versatile and multifunctional polymer that has been widely used in various applications, including in polyurethane dispersions (PUDs). PUDs are water-based coatings that are widely used in the production of various products, such as textiles, leather, wood, and automotive coatings.
Polycarbodiimide is used in PUDs as a crosslinking agent, which helps to improve the properties of the coatings. Polycarbodiimide crosslinkers react with the isocyanate groups in the polyurethane molecules, forming a three-dimensional network that improves the mechanical properties, such as hardness, scratch resistance, and chemical resistance of the coating.
One of the key advantages of using polycarbodiimide as a crosslinker in PUDs is its low toxicity compared to other crosslinkers, such as isocyanates. This makes it a more environmentally friendly alternative that can meet regulatory requirements for low VOC (volatile organic compound) emissions.
Another advantage of using polycarbodiimide in PUDs is its high compatibility with other additives, such as pigments, fillers, and surfactants. This makes it easier to formulate PUD coatings with desirable properties and characteristics, such as improved adhesion, flexibility, and water resistance.
Overall, polycarbodiimide is a valuable and effective crosslinker for PUDs that can improve the performance and environmental sustainability of water-based coatings in a variety of applications.
HyMax CA series crosslinkers are a range of polycarbodiimide crosslinking agents developed and produced by our company. These crosslinkers are highly versatile and can be used in a wide range of applications, including coatings, adhesives, and composites. If you want to see the technical data or ask for a free sample, please feel free to contact us.