BASF IRGACURE 819 is a high-efficiency UV photoinitiator in the IRGACURE series, yellow powder, suitable for thick films/white systems/glass fiber-reinforced polyester/styrene, compoundable with IRG 184/651, compatible with UV absorbers for outdoor varnishes, ensuring curing efficiency and anti-yellowing.
Efficient UV initiation - Rapid free-radical generation under UV, suitable for thick films/high-opacity systems, improving through-cure
Anti-yellowing/weatherability - Anti-UV yellowing, compoundable with light stabilizers, suitable for outdoor varnishes, extending coating life
Excellent compounding synergy - Compoundable with IRG 184/651, improving curing efficiency, suitable for glass fiber-reinforced systems
Long-wave absorption - Dual peaks at 295nm/370nm, compatible with various UV light sources/UV absorbers
High-opacity compatibility - Low dosage achieves excellent curing in white/colored paints, reducing formulation costs
Thick-film UV curing - Thick coatings, ensuring through-cure, ideal for high-opacity white/colored paints
Glass fiber-reinforced materials - Polyester/styrene prepregs, improving curing efficiency and mechanical properties
Outdoor UV varnishes - Compoundable with light stabilizers, for outdoor wood/metal varnishes, anti-aging
Printing inks - White screen inks, improving curing speed and surface curing, suitable for thin coats
Electronic materials - Optical fiber coatings/solder masks, suitable for fine-pattern curing, improving resolution
| Chemical Name | Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide |
| CAS No | 162881-26-7 |
| Appearance (25℃) | Yellow powder |
| Molecular Weight | 418.5 g/mol |
| Melting Point | 127-133℃ |
| Density (20℃) | 1.19g/cm³ |
| Flash Point | 168℃ |
| Absorption Peaks | 295nm, 370nm (in methanol) |
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