The chemical name of Photoinitiator 819 is phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide. It appears as a yellow powder; it is an efficient and universal UV photoinitiator used to initiate UV polymerization reactions of unsaturated prepolymer systems. It performs well in white paints, colored paints, and inks containing titanium dioxide or other colors with high hiding power. Adding a small amount can make the coating have excellent curing effect and anti-UV yellowing properties. Photoinitiator 819 can be used in many fields such as printing inks on wood, metal, plastic, paper and optical fiber surfaces, and has broad application prospects.

Adding a small amount of Photoinitiator 819 CAS 162881-26-7 to the printing ink on the wood surface can make the ink cure quickly under ultraviolet light to form a solid coating to protect the wood surface.

Photoinitiator 819 hardly turns yellow after light curing and under long-term light radiation. This feature makes it very suitable for occasions with strict requirements on yellowing, such as white, light-colored inks and coatings. In these applications, photoinitiator 819 ensures that the coating maintains a good appearance during long-term use without obvious yellowing. Its excellent absorption properties make it suitable for thick film systems. In white paints, color paints, and inks containing titanium dioxide or other colors with high hiding power, adding a small amount of photoinitiator 819 can make the coating have excellent curing effect and UV yellowing resistance.

In the field of optical fiber, photoinitiator 819 can be used in printing inks and coating systems on the surface of optical fibers. It can quickly cure the coating on the surface of optical fibers and improve the wear resistance, water resistance and weather resistance of optical fibers. For example, in the field of optical fiber communication, the wear resistance of the optical fiber surface treated with photoinitiator 819 can be increased by more than 40%, the water resistance can be increased by more than 50%, and the weather resistance can be increased by more than 60%.

In the field of metals, Photoinitiator 819 CAS 162881-26-7 can be used in printing inks and coating systems on metal surfaces. It can cure quickly under ultraviolet light to form a hard coating that protects metal surfaces from corrosion and oxidation.

In addition, photoinitiator 819 can also be used in outdoor varnish when used in combination with light stabilizers. This varnish can maintain good performance for a long time in outdoor environments without fading, cracking, or peeling. For example, in the fields of outdoor billboards and building exterior walls, the use of outdoor varnishes made with photoinitiator 819 and light stabilizers can enable these facilities to maintain good appearance and performance in the long-term exposure to wind, sun, and rain.

Our company is a manufacturer of chemical raw materials for photoinitiator 819. We have reached friendly cooperation with many large physical industrial manufacturers. If you need initiator 819, please contact us.