SILCOLEASE UV CATA 243 is used as photoinitiator for the bath preparation of the solventless polymer SILCOLEASE UV 200 at following dosage :
SILCOLEASE UV POLY 200 : 100 parts
SILCOLEASE UV CATA 243 : 0.3 -1.2 parts
It can also be used for the formulation of photopolymers intended for use in applications such as electronics (photoresists etc.), graphic arts (printing plates etc.), composite materials, fibre optics coatings and ink formulations.
This cationic photoinitiator, when used for the formulation of inks, pigmented coatings or varnishes applied in thicknesses of greater than 10 microns can also be formulated at much lower doses when combined with photo-sensitizers (e.g. isopropyl thioxanthone type).

SILCOLEASE UV CATA 243 may be stored at temperatures between 2°C / 36°F and 30°C / 86°F for up to 24 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.


SILCOLEASE UV CATA 243 is a low odour photoinitiator used for the polymerization of SILCOLEASE UV 200 Series of base polymers.
It may also be used with epoxy resins, vinyl ethers or any other type of oligomer which reacts via a cationic polymerisation mechanism. It is also suited to the formulation of hybrid radical / cationic systems.


Cationic Photoinitiator

  • Low odour.
  • Patented Iodonium Borate photoinitiator technology.
  • High efficiency PI in low toxicity, non-flammable, zero VOC solvent.
  • Easy to use liquid photoinitiator.
  • Excellent compatibility with all UV epoxy polymers.
  • Low migration potential.
  • Very high catalysed bath stability.
  • Curing at room temperature.
  • Suitable for thermo sensitive substrates.

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Color< 100MonocompHAZEN




































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