Chemical Name: 2-Hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenon Density: 1.183g/cm3 Melting point: 88-90 ° C Boiling point: 405 ° C at 760 mmHg Flash point: 155.8 °C Appearance: off-white powder Description About Irgacure 2959 CAS 106797-53-9:
Irgacure 2959 is a highly efficient non-yellowing radical photoinitiator for the UV curing of systems
comprising of unsaturated monomers and prepolymers. It is especially suited where low odor is required and
for use in water-borne systems based on acrylate or unsaturated polyester resins. The active hydroxy group
can be reacted with suitable functionalized unsaturated resins.
Irgacure 2959 may be used after adequate testing in UV curable formulations on substrates like wood, metal,
plastic and paper.
Due to its unique secondary properties Irgacure 2959 is especially recommended when high temperatures and
air circulation are required for water evaporation prior to UV curing of the coating and for formulations
where minimum residual odor is required, e.g. in printing onto food packaging.
A further important feature of Irgacure 2959 is the potential to react the hydroxy functional group to form
a grafted photoinitiator onto a resin backbone, resulting in system with minimum extractability of the
Irgacure 2959 has lower volatility and odor than Irgacure 1173. Importantly, the active hydroxyl groups of
Irgacure 2959 are easily grafted onto the polymer molecules, making them easier to process.