BASF IRGACURE 907 is an α-amino ketone solid UV photoinitiator in the IRGACURE® series, white/beige powder, high absorption for pigmented systems, compoundable with IRG 184/ITX, ideal for inks/photoresists/solder masks, ensuring curing efficiency/color stability.
Efficient UV initiation - Rapid free-radical generation under UV, suitable for pigmented systems, improving curing efficiency
High absorption for pigmented systems - High absorption 适配 pigmented coatings/inks, ensuring color stability/curing effect
Compounding synergy - Compoundable with IRG 184/ITX, balancing surface/through-cure, suitable for multi-formulations
Broad compatibility - Compatible with solvents/acrylates, suitable for varnishes/inks/photoresists
Solid easy processing - Powder form easy to meter/add, convenient storage/transport, suitable for large-scale production
Printing inks - Offset/screen inks, suitable for pigmented systems, improving printing precision/curing speed
Electronic materials - Photoresists/solder masks, ensuring pattern accuracy/chemical resistance
Multi-substrate coatings - Varnishes for paper/metal/plastic, suitable for pigmented systems, improving appearance/durability
Photoresist field - UV-curable photoresists, ensuring pattern resolution/development effect
Adhesives - UV-curable adhesives, suitable for pigmented systems, improving bond strength/weatherability
| Brand | BASF |
| Chemical Type | α-amino ketone free-radical UV photoinitiator |
| Chemical Name | 2-Methyl-1-[4-(methylthio)phenyl]-2-morpholinopropan-1-one |
| CAS No | 71868-10-5 |
| Appearance (25℃) | White or beige powder |
| Molecular Weight | 277.4 g/mol |
| Melting Point | 70-75℃ |
| Absorption Peaks | 230nm, 304nm (in methanol) |
Q1: What is the primary application niche for IRGACURE 907?
A: IRGACURE 907 is especially valued in UV-curable systems requiring high surface cure efficiency and low yellowing, such as clear coatings for optical components, decorative laminates, and thin-film inks where deep-layer initiation is less critical than rapid surface hardening.
Q2: How does IRGACURE 907 compare to benzophenone-type photoinitiators in terms of odor and volatility?
A: Unlike many benzophenone derivatives, IRGACURE 907 exhibits significantly lower volatility and minimal residual odor after curing, making it suitable for applications where sensory properties and workplace handling are important considerations.
Q3: Is IRGACURE 907 compatible with acrylate-based and epoxy-based UV formulations?
A: It demonstrates good compatibility and reactivity in free-radical acrylate systems. While not a cationic photoinitiator itself, it can be effectively combined with iodonium or sulfonium salts in hybrid formulations to broaden curing performance across both radical and cationic chemistries.
Q4: What safety and handling precautions are recommended for IRGACURE 907?
A: As with most photoinitiators, appropriate personal protective equipment—including nitrile gloves, safety goggles, and adequate ventilation—should be used during handling to minimize skin contact and inhalation of dust. It is classified as a skin sensitizer; therefore, good industrial hygiene practices are essential.
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