The current trend of crosslinking agent development

The development trend of crosslinking agents is mainly characterized by non toxicity, high efficiency, excellent performance, low price, and small dosage.

Among several crosslinking agents, formaldehyde melamine crosslinking agent will be replaced by other types of crosslinking agents due to toxicity issues.

Isocyanate crosslinking agents are sensitive to water, which makes their storage and application inconvenient and detrimental to their development. Carbodiimide and aziridine are two types of crosslinking agents with good crosslinking effects, but they are limited by price and toxicity, respectively. Reducing price and toxicity will be the primary issues that need to be addressed in the development of these two types of crosslinking agents.

When epoxy resin is used as a crosslinking agent, the crosslinking rate is slow, and it is necessary to introduce functional groups to enhance its activity or add catalysts to improve its reaction performance.

Due to the good crosslinking effect, low toxicity and low price of epoxy silane and metal ion cross-linking agents, more and more attention will be paid to them. The key point of research is to use them to prepare crosslinked lotion with stable storage.

When used in combination with water-based acrylic resin, crosslinking agents can enhance the water resistance and solvent resistance of coatings, and improve the mechanical properties of coatings. With the further widespread application of water-based acrylic resin, it will inevitably promote the rapid development of various crosslinking agents.