Photoinitiators play a crucial role in the efficient curing of UV-curable coatings, inks, and adhesives. They enable the photopolymerization process, which involves the conversion of liquid resins into solid polymers through exposure to UV light. Photoinitiator 1173 is a commonly used initiator in the industry due to its high efficiency and low toxicity. Manufacturers and suppliers are always on the lookout for new and better photoinitiators that can improve the performance and quality of their products. In this article, we will explore the feasibility of 2-Hydroxy-2-Methyl-1-Phenyl-1-Propanone (PI-1173) as a new photoinitiator and analyze its synthetic route by the manufacturer.

PI-1173 is a white to light yellow crystalline powder with a molecular weight of 178.23 g/mol. It is also known by other names such as 2-Hydroxy-2-methyl-1-phenyl-1-propanone, α-Hydroxy-α-methylpropiophenone, and 2-Hydroxy-2-methylpropiophenone. It has a melting point of 52-55°C and a boiling point of 120-124°C. PI-1173 is soluble in most organic solvents and has excellent compatibility with various resins and monomers.

Ningbo Inno Pharmchem Co., Ltd. is a leading manufacturer and supplier of PI-1173 in China. The company has a strong R&D team that focuses on the development and optimization of new photoinitiators. They use advanced technologies and equipment to ensure the highest quality and purity of their products. The company's PI-1173 has a purity of 99% and meets the industry standards for photoinitiators.

The synthetic route of PI-1173 involves the reaction of 2-hydroxyacetophenone with isobutyryl chloride in the presence of an acid catalyst. This leads to the formation of α-hydroxyisobutyrylbenzene, which is then reacted with methylmagnesium bromide to produce 2-hydroxy-2-methyl-1-phenyl-1-propanone. The overall reaction scheme is as follows:

2-hydroxyacetophenone + isobutyryl chloride → α-hydroxyisobutyrylbenzene α-hydroxyisobutyrylbenzene + methylmagnesium bromide → 2-hydroxy-2-methyl-1-phenyl-1-propanone

The synthetic route is a relatively simple and efficient process that can be easily scaled up for commercial production. The use of readily available starting materials and reagents makes the process cost-effective and sustainable.

PI-1173 has several advantages over other photoinitiators. Firstly, it has a high photoinitiating efficiency, which means it can initiate the polymerization process at a lower concentration and with less UV exposure. This results in a faster curing time and higher productivity. Secondly, it has a low toxicity and is considered safe for use in food packaging, medical devices, and other sensitive applications. Thirdly, it has good compatibility with a wide range of resins, monomers, and additives, making it a versatile photoinitiator for different formulations.

PI-1173 can be used in various applications such as UV-curable coatings, inks, adhesives, and 3D printing. In coatings, it provides excellent adhesion, hardness, and chemical resistance. In inks, it enables high-speed printing, sharp image quality, and low odor. In adhesives, it ensures strong bonding, fast curing, and low shrinkage. In 3D printing, it enables precise layer-by-layer curing, fast build-up, and high resolution.

In conclusion, PI-1173 is a promising new photoinitiator that offers high efficiency, low toxicity, and good compatibility. Its synthetic route is simple and cost-effective, making it a viable alternative to existing photoinitiators. Ningbo Inno Pharmchem Co., Ltd. is a reliable manufacturer and supplier of PI-1173, offering high-quality and affordable products to meet the needs of the industry. With its superior performance and versatility, PI-1173 has the potential to revolutionize the UV-curable coatings, inks, and adhesives market.

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