Photoinitiators
Photoinitiator 784
Bis(2,6-difluoro-3-(pyrrol-1-yl)phenyl)titanocene
The titanocene for visible-light curing at 400–550 nm.
Product Description
Photoinitiator 784 is the commercial titanocene (Irgacure 784 type) initiator. Its absorption extends deep into the visible spectrum — strong bands through 400–550 nm — enabling curing with blue/violet LEDs, argon-ion lasers and visible-light diodes where UV initiators are blind.
Upon photolysis it generates titanium-centered radicals and difluorinated aromatic fragments that initiate acrylates efficiently even at very low loadings (0.1–1%). Main uses: holographic recording, photolithography, dental and visible-light 3D printing resins.
Key Features
- Unique 400–550 nm visible-light absorption
- Cures with blue/violet LEDs and lasers
- Extremely efficient — active from 0.1% loading
- Enables UV-free formulation of sensitive substrates
Applications
- Holographic recording materials
- Visible-light 3D printing resins
- Dental and medical resins
- Fine-line photolithography
- Red-sensitive imaging systems
Specifications
| CAS No. | 125051-32-3 |
|---|---|
| Molecular Formula | C30H22F4N2Ti |
| Molecular Weight | 534.37 |
| Appearance | Orange to yellow powder |
| Assay (HPLC) | ≥ 98.0% |
| Loss on Drying | ≤ 0.5% |
Packaging & Storage
1 kg / 5 kg aluminum-foil bottles, 25 kg fiber drum. Store cool (2–8 °C recommended), dry and protected from light; shelf life 12–24 months.
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