Deuteron UV 1240
Cationic UV photoinitiator for epoxy and vinyl ether resins. Cures oxirane and oxetane systems under a mercury lamp with low shrinkage, no benzene emission and only slight odour.
Cationic UV photoinitiator for epoxy and vinyl ether resins. Cures oxirane and oxetane systems under a mercury lamp with low shrinkage, no benzene emission and only slight odour.
Deuteron UV 1240 is a solution of bis(dodecylphenyl)iodonium hexafluoroantimonate in a reactive solvent. It is a photoinitiator for cationic polymerisation, which is a different cure mechanism from the free-radical acrylate systems that dominate UV coating.
It suits resins based on oxirane or oxetane groups, meaning epoxy resins and vinyl ethers. Adding it lets a formulator use UV light to drive the polymerisation of those systems.
Polymerisation is initiated by UV between 220 and 250 nm, with maximum absorption at 240 nm. Suitable light sources are high-pressure mercury lamps with strong emission in that band.
It contains no volatile solvents, so it does not add to film shrinkage. The carrier here is propylene carbonate; the companion grade UV 1242 uses a C12/C14 glycidyl ether instead.
| Property | Typical value |
|---|---|
| Appearance | Reddish viscous liquid |
| Active content | 50 percent |
| Reactive thinner | Propylene carbonate |
| Density | approx. 1.24 g/cm³ |
| Absorption range | 220 to 250 nm, maximum at 240 nm |
| Cure mechanism | Cationic |
Dosage: A typical addition range of 1.0 to 5.0 percent. The level depends on the system and the curing speed wanted, so determine it with a ladder study.
Typical values from the manufacturer's technical data sheet. They describe the product, they are not a specification. We will send the current TDS and the batch documentation your qualification needs.
Tell us the binder system, the property you are targeting, and the volume you expect. We will confirm the grade, send the documentation, and ship a sample from North American stock.
Cationic cure with low shrinkage over the print.
Thick deposits where shrinkage would otherwise show.
Cationic systems on film and paper.
Cure through where free-radical systems are oxygen inhibited.
Adhesion on a substrate that resists it.
Adhesion on difficult plastic substrates.
It is specified where the formulation needs low shrinkage, no benzene emission, only slight odour, flexibility in the cured film, and adhesion on difficult substrates.
Deuteron UV cationic initiators can be incorporated into the binder with a high-speed stirrer or another aggregate such as a dissolver.
Several routes exist to push performance further: co-catalysts such as ITX, catalysis by copper naphthenates, raising the curing temperature, and adding multifunctional alcohols such as TMP. Ask us for the UV initiator brochure before designing the trial.
Package sizes: Plastic canister.
Storage: 12 months at room temperature in dry conditions, in the original tightly closed containers. Do not expose to direct sunlight.
Under Regulation (EC) No. 1272/2008 Deuteron UV 1240 is classified as a dangerous product and must be labelled. Read the safety data sheet before handling.
Free-radical acrylate cure is fast but shrinks, is inhibited by oxygen at the surface, and stops the moment the lamp goes off. Cationic cure runs on an acid generated by the photoinitiator, so it continues in the dark after exposure, is not oxygen inhibited, and shrinks less. That is why it is chosen for adhesion on difficult substrates and for thick deposits.
One with strong emission between 220 and 250 nm, since maximum absorption is at 240 nm. High-pressure mercury lamps are the suitable source. An LED source emitting at 385 or 395 nm will not initiate this photoinitiator.
Resins based on oxirane or oxetane groups, which means epoxy resins and vinyl ethers. It is soluble in those binder systems including the standard solvents and reactive diluents.
Yes, several ways: a co-catalyst such as ITX, catalysis by copper naphthenates, a higher curing temperature, or adding a multifunctional alcohol such as TMP. Ask us for the UV initiator brochure, which covers each option.
It is a photoinitiator, so light and time are both working against it. Keep it in the original tightly closed container, out of direct sunlight, at room temperature. Most of the Deuteron range carries 24 months; this one does not.
Yes. We send the Technical Data Sheet (TDS), Safety Data Sheet (SDS), Regulatory Information Sheet, and UV initiator brochure on request, in the manufacturer's current revision. Use Request TDS or SDS above and tell us what your qualification review needs.
Matting dispersion for the UV curable systems this initiator cures.
The same matting dispersion without a wetting agent.
Wax additive usable in 100 percent and UV curable systems.