Photoinitiator 551 Application scenarios
1. Cationic UV-Curable Ink
Primarily used in printing applications requiring high adhesion and low shrinkage, such as printing on plastic and metal packaging surfaces. It exhibits low oxygen sensitivity and excellent surface curing performance.
2. Cationic UV-Curable Coatings
Suitable for clear or pigmented topcoats on substrates including wood, metal, and plastic. The cured coating features high hardness, excellent chemical resistance, low shrinkage, and strong adhesion.
3. Cationic UV-Curable Adhesives
Used for bonding glass, metal, and certain plastics. The cationic curing system exhibits minimal shrinkage, delivering stable bond strength and reduced internal stress.
4. Electronic Encapsulation and Precision Processing
Suitable for electronic component encapsulation materials or photoresist applications requiring high precision and low deformation. The sustained curing process after cationic polymerization facilitates thorough deep-cure penetration.





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