Photoinitiator 907 (MMMP, 2-Methyl-4-(methylthio)-2-morpholino-propiophenone)
CAS Number: 71868-10-5
Photoinitiator 907 (MMMP) is an alpha-aminoketone Type I photoinitiator with absorption extending to 400 nm, making it highly effective for white and pigmented UV systems including LED curing at 385 nm and 395 nm. It generates amine radicals that exhibit high surface cure efficiency and reduced oxygen inhibition, commonly used at 1–4 phr alone or in combination with thioxanthone sensitizers such as ITX or DETX.
Technical Specifications
| Purity | ≥99% (GC) |
| Appearance | Light yellow to yellow powder |
| Melting Point | 72–76 °C |
| Molecular Weight | 279.4 g/mol |
| Absorption Maximum | 232 nm, 306 nm, 395 nm |
Applications
- White and pigmented UV inks and coatings
- UV-LED curable offset and flexo inks
- UV screen printing inks
- UV-curable adhesive films
- UV conformal coatings for electronics
Key Features
- Photoinitiator 907 delivers superior surface cure in pigmented and white UV systems
- LED-compatible absorption at 385 nm and 395 nm for energy-efficient curing
- Amine radical generation reduces oxygen inhibition and tackles skin tack
- Excellent synergy with ITX and DETX sensitizers for deep-section cure
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CAS Number
71868-10-5
Category
Radiation Curing ChemicalsAvailability
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