Pigmented materials present a unique challenge in UV curing: the pigments themselves can absorb or scatter UV light, preventing it from reaching the photoinitiator and initiating polymerization. This can lead to incomplete curing, poor adhesion, and a compromised finish. However, advancements in photoinitiator technology, particularly the development of compounds that absorb in longer wavelengths, have provided elegant solutions. NINGBO INNO PHARMCHEM CO.,LTD. offers such solutions with Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (Photoinitiator 819).

Photoinitiator 819 is a standout example of a photoinitiator that excels in these demanding pigmented UV coatings and inks. Its ability to absorb visible light in the long-wavelength band, typically above 400nm, is its key differentiator. This means it can initiate radical polymerization effectively even when UV light penetration is limited by pigments. This capability is crucial for achieving a uniform and thorough cure across the entire film thickness, ensuring the final product meets high-quality standards.

For applications like white lacquers or colored paints with high opacity, the selection of the right photoinitiator is critical. Photoinitiator 819, supplied by NINGBO INNO PHARMCHEM CO.,LTD., provides excellent curing effects in these formulations. Manufacturers can rely on it to ensure that even deeply embedded pigments are effectively polymerized, leading to a durable and aesthetically pleasing finish. This makes it a go-to choice for demanding applications in printing, packaging, and industrial coatings.

The benefits extend beyond just curing efficiency. The use of advanced photoinitiators like 819 also contributes to improved product performance. For instance, it offers good UV yellowing resistance, which is important for maintaining the visual appeal of colored items over time. Furthermore, its effectiveness in thick film UV polymerization means that manufacturers can achieve robust results even with thicker layers of coating or ink, simplifying production processes and enhancing the physical properties of the cured material.

NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing photoinitiators that address specific industry challenges. By understanding the complexities of pigmented systems, they offer Photoinitiator 819 as a solution to enhance cure speed, depth, and overall product quality. This allows businesses to push the boundaries of what's possible with UV curing, creating superior products efficiently and sustainably.