Photoinitiators
Photoinitiator PAG-101
Bis(4-tert-butylphenyl)iodonium hexafluorophosphate
The long-wavelength iodonium PAG — cost-efficient cationic acid source.
Product Description
PAG-101 is a diaryliodonium hexafluorophosphate with para-tert-butyl substituents that extend absorption and improve solubility versus unsubstituted iodonium salts. UV exposure liberates hexafluorophosphoric acid for cationic polymerization of epoxides and vinyl ethers.
Iodonium salts also act as powerful radical synergists — small additions boost Type II radical systems — making PAG-101 a dual-purpose tool for hybrid radical/cationic formulations. Typical loadings: 1–3 wt%.
Key Features
- t-Butyl chromophore for longer-wavelength absorption
- Dual role: cationic PAG and radical synergist
- Cost-efficient versus antimonate analogs
- Clean white crystalline solid
Applications
- Cationic epoxy coatings and inks
- Hybrid radical/cationic packages
- Photoresist systems
- UV adhesives with dark cure
- Radical boost for Type II systems
Specifications
| CAS No. | 61358-25-6 |
|---|---|
| Molecular Formula | C20H26F6IP |
| Molecular Weight | 538.29 |
| Appearance | White crystalline powder |
| Assay (HPLC) | ≥ 98.0% |
| Loss on Drying | ≤ 0.5% |
Packaging & Storage
25 kg fiber drum with PE liner. Store cool, dry and protected from light; shelf life 24 months.
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