Photoinitiator 1173: A Key Ingredient in Photopolymerization Processes
Photopolymerization is a process used in many industries to cure coatings, inks, and adhesives. It involves the use of a photoinitiator, a chemical compound that, upon exposure to light, generates free radicals that initiate the polymerization reaction. Among the many photoinitiators available in the market, 2-Hydroxy-2-methyl-1-phenyl-1-propanone, also known as Photoinitiator 1173 or PI-1173, is one of the most commonly used due to its versatility and efficiency.
Manufactured and supplied by INNO Specialty Chemicals from China, PI-1173 is a colorless to pale yellow liquid with a molecular weight of 214.24 g/mol. It has several synonyms, such as α-Hydroxy-α-methylpropiophenone, 2-Hydroxy-2-methylpropiophenone, 2-Hydroxy-2-methylphenylacetone, 2-Hydroxy-2-methylphenylpropan-1-one, Alpha-Hydroxyisobutyrylbenzene, and 2-Hydroxy-2-methylpropionphenone, among others.
One of the main benefits of using PI-1173 is its high reactivity to UV and visible light, which enables fast curing times, even with low light intensities. Additionally, it has a broad absorption spectrum, which means it can be activated by various light sources, such as LED, halogen, or mercury lamps. This feature makes it suitable for a wide range of applications, from wood and metal coatings to printing inks and 3D printing resins.
Another advantage of PI-1173 is its compatibility with different monomers and oligomers, which allows formulators to adjust the curing speed and viscosity of their formulations. It can also be used in combination with other photoinitiators, such as benzophenone, thioxanthone, or camphorquinone, to enhance their activity or improve the curing performance under specific conditions.
However, like any chemical substance, PI-1173 has some limitations that need to be considered. For instance, it has a relatively low solubility in water, which can lead to phase separation or sedimentation issues in aqueous systems. It can also cause skin and eye irritation, so proper handling and protective measures are required.
Overall, PI-1173 is a valuable tool for photopolymerization processes, thanks to its high reactivity, broad compatibility, and versatility. Its use can lead to faster curing times, improved performance, and reduced costs in various applications. As a leading supplier of specialty chemicals, INNO Specialty Chemicals offers a wide range of photoinitiators, including PI-1173, to meet the needs of its customers worldwide.
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