Photoinitiators (UV/LED)
Free‑radical and cationic photoinitiators for inks, coatings, adhesives and 3D resins. LED‑optimized, low‑migration and waterborne options available.
Selection guide.
- Type I (cleavage; e.g., 1173/184, TPO/BAPO) → fast cure, low yellowing; good for 365–405 nm, thicker films (oxides).
- Type II (H‑abstraction; e.g., ITX/DETX/907/369) → surface cure & pigmentation; often with amine synergists (EDB/EDAB).
- Cationic (sulfonium/iodonium) → epoxies/vinyl ethers; post‑cure in dark; useful where oxygen inhibition is an issue.
- Flags: LED (peak 365/385/395/405 nm), Low‑migration (LM), Waterborne (WB).
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Type I – Hydroxyalkylphenones & Acylphosphine Oxides
Fast cure, low yellowing; LED capable
Type II – Thioxanthones & Amino Ketones
Surface cure, pigmented systems
Cationic – Ononium Salts
Epoxy/vinyl ether cure; moisture tolerant
Synergists & Sensitizers
Amines, dyes and co‑initiators
Regulatory note.
Food‑contact or low‑migration applications require careful selection and validation (e.g., Swiss Ordinance, EuPIA guidance). Provide end‑use details so we can supply compliant grades and documentation (SDS/TDS/COA, migration data where available).