Aziridine Crosslinker(Crosslinker C-100 ) is a versatile and efficient crosslinking agent used in various industries such as coatings, inks, and adhesives. Adding 1-3% to a water-based acrylic emulsions or polyurethane dispersion can significantly improve its water resistance, chemical resistance, wear resistance and moisture resistance and enhances the adhesion to a specific substrate. This product is an environmentally friendly crosslinking agent, no harmful substances such as formaldehyde will be released.And the finished product is non-toxic and odorless after crosslinking.
Application
1. Coatings Industry
Waterborne Coatings: Aziridine Crosslinker performs exceptionally well in waterborne coatings, significantly enhancing the hardness, heat resistance, and chemical resistance of the coating. For example, in furniture coatings, the use of polyaziridine crosslinkers can significantly improve the hardness and chemical resistance of the coating while maintaining good adhesion.
Solvent-Based Coatings: In addition to waterborne coatings, aziridine crosslinkers are also suitable for solvent-based coatings, where they can improve the durability and adhesion of the coating.
2. Ink Industry
Printing Inks: In printing inks, Aziridine Crosslinker can enhance the adhesion and abrasion resistance of the ink. For example, in applications such as plastic packaging films, paper packaging, and labels, aziridine crosslinkers can significantly improve the adhesion of the ink.
Flexographic and Gravure Printing: Aziridine crosslinkers are suitable for flexographic and gravure printing processes, where they can improve the chemical resistance and wear resistance of the ink.
3. Adhesives Industry
Waterborne Adhesives: In waterborne adhesives, Aziridine Crosslinker can enhance the water resistance and mechanical properties of the adhesive. For example, in wood coatings, the use of aziridine crosslinkers can significantly improve the water resistance and wear resistance of the coating.
Hot Melt Adhesives: Aziridine crosslinkers can also be used in hot melt adhesives to improve their heat resistance and adhesion.
4. Leather and Textiles
Leather Treatment: In leather treatment, Aziridine Crosslinker can enhance the water resistance and chemical resistance of leather.
Textile Coatings: In textile coatings, aziridine crosslinkers can enhance the durability and adhesion of the coating.
5. Biomedical Materials
Tissue Engineering Scaffolds: Crosslinking natural polymers (e.g., collagen, hyaluronic acid) to modulate degradation rate and mechanical properties.
Drug Delivery Carriers: Controlling drug release kinetics through crosslinking (note: potential cytotoxicity concerns).
Formulating guidelines
Aziridine Crosslinker is a tri-functional material that crosslinks polymers with reactive carboxyl functionalily. Typical addition levels of Crosslinker C-100 necessary to fully crosslink acrylic emulsions and urethane dispersions are 2% and 3% respectively. Crosslinker C-100 should be added to lacquers, paints or inks prior to use and due to its excellent water miscibility it can be stirred in by hand. The best method of addition is by using a 1:1 premix of C-100 and water. In water borne formulations, C-100 will slowly hydrolyse and blends should therefore be used within 1-2 days after preparation. The hydrolised products have no adverse effects on the emulsions nor on the dried films, and additional crosslinker may be added to restore reactivit. Solvent based systems modified by the addition of C-100 must be used within 5 days because they tend to thicken and may gel within 2 weeks.
Storage
Keep containers tightly sealed. Store in a cool, dry, well ventilated area away from heat, sources of ignition, direct sunlight, and incompatible materials.
Stability and Reactivity
Conditions To Avoid: This material is stable. Avoid contamination with acidic materials, heat, direct sunlight, ultraviolet radiation, strong oxidizing conditions and freezing conditions. Unstable at elevated temperatures and pressures, or may react with water or acids with some release of energy, but not violently.
Incompatible Materials: Acidic materials, anhydrides, strong oxidizers.
Hazardous Polymerization: May occur if mixed with acidic materials.
Hazardous Decomposition Products: Carbon oxides, Nitrogen oxides
