2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone: A Versatile Photoinitiator
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2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone: A Versatile Photoinitiator
2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone, also known as Photoinitiator 907 or PI-907, is a widely used photoinitiator in the field of polymer chemistry. It is a yellowish crystalline powder with a molecular weight of 297.43 g/mol and a melting point of 74-76 ℃. This article will introduce the properties, applications, and synthesis of 2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone.
Properties
2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone has a strong absorption at 340 nm, which is in the UV region. When exposed to UV light, it undergoes a photoreaction that generates free radicals, which initiate the polymerization of monomers or oligomers. The photoinitiation efficiency of 2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone is high, and it can initiate the polymerization of various monomers, such as acrylates, methacrylates, vinyl ethers, and styrene. The photoinitiation rate of 2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone is also fast, which enables the rapid curing of coatings, inks, adhesives, and composites.
Applications
2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone is widely used as a photoinitiator in various applications, including:
- UV-curable coatings: 2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone is an effective photoinitiator for UV-curable coatings, which are widely used in the automotive, electronics, and furniture industries. UV-curable coatings are environmentally friendly, as they do not contain volatile organic compounds (VOCs) and can be cured in seconds, which improves the productivity of the coating process. 2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone can initiate the polymerization of acrylate and methacrylate monomers, which are commonly used in UV-curable coatings.
- UV-curable inks: 2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone is also used as a photoinitiator in UV-curable inks, which are used in digital printing, packaging, and labeling. UV-curable inks have several advantages, such as fast curing, high resolution, and vivid colors. 2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone can initiate the polymerization of vinyl ethers and methacrylates, which are commonly used in UV-curable inks.
- UV-curable adhesives: 2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone is also used as a photoinitiator in UV-curable adhesives, which are used in the electronics, medical, and automotive industries. UV-curable adhesives have several advantages, such as fast curing, high strength, and high transparency. 2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone can initiate the polymerization of acrylate and methacrylate monomers, which are commonly used in UV-curable adhesives.
Synthesis
2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone can be synthesized by the reaction of 2-methyl-4-(methylthio)benzaldehyde with morpholine and 1-chloropropane in the presence of a base, such as potassium carbonate. The reaction proceeds via a nucleophilic substitution mechanism, in which the morpholine attacks the carbonyl group of the aldehyde, followed by the displacement of the chloride ion by the morpholine nitrogen. The product is then isolated by filtration and recrystallization.
Conclusion
2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone is a versatile photoinitiator that has found widespread use in the field of polymer chemistry. Its high photoinitiation efficiency, fast photoinitiation rate, and compatibility with various monomers make it an attractive candidate for the development of UV-curable coatings, inks, adhesives, and composites. INNO SPECIALTY CHEMICALS is a reliable manufacturer and supplier of 2-Methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone from China, which can provide high-quality products and technical support to customers worldwide.
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