Common used UV photoinitiators

TPO Photoinitiator

TPO photoinitiator (CAS: 75980-60-8 ), also known as Irgacure TPO, lucirin TPO, is a high efficient Norish type I free radical photoinitiator, which is perhaps the most popular photoinitiators up to now. TPO is first developed by BASF company in 1990s. And they named it ‘Lucirin TPO’. It has excellent performance and is often used in combination with secondary amine […]

1-Hydroxycyclohexyl Phenyl Ketone

1-Hydroxycyclohexyl Phenyl Ketone is a chemical product, it is one of the high efficient UV photoinitiator. Its molecular formula is C13H16O2, formula weight is 204.26, and the Cas number is 947-19-3. Properties of 1-Hydroxycyclohexyl Phenyl KetoneAppearance: white crystalline powder Density: 1.17 g/cm3Melting Point: 47-50 °C(lit.)Flash Point: >150°CBoiling Point: 175 °C15 mm Hg(lit.)Refractive Index: 1.607 The more popular name of 1-Hydroxycyclohexyl Phenyl Ketone is […]

UV Photoinitiators for Pigmented Coatings.

In recent years, the application of pigment in UV curing system is more and more popular. The addition of various colors not only enriches the products, but also brings some curing problems: The film of pigmented coating can be in a wide range. Through curing for thick film is harder to achieve. Pigments also absorb UV light. When the light […]

UV Photoinitiators for Clear Coatings

When choosing UV photoinitiators for clear coatings, we should first know the properties about clear coatings. Clear coatings is the most commonly used coatings in many applications, it can be applied on metal, wood, glass and plastic. Because it is a transparent paint, it will not cover the original color of the object completely when applied on the surface of […]

Advantages of Irgacure 819

Irgacure 819 is one of BAPO type photoinitiators, which absorbs longer wavelength UV light in the near visible region above 430 nm. Light of this wavelength penetrates deeper into the thicker layers of the coating, thus enabling the through curing effect. Shorter wavelength light, around 230 nm, is of higher photon energy but is less penetrating than that of longer […]