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Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (IrgacureBAPO )
Recommended concentration:
Clear acrylate & UPES/styrene coatings: 0.1 - 0.2 % Irgacure819 + 1 - 2% Irgacure184
White acrylate & UPES/styrene furniture coatings:0.5 - 1.0 % Irgacure819 + 1 - 2% Irgacure184 Colored acrylate formulations: 0.5 - 1.0 % Irgacure819 + 1 - 2% Irgacure651
White screen printing inks: 0.5 - 1.5 % Irgacure819 + 1 - 2% Irgacure184 Glass reinforced UPES/styrene prepregs : 0.2 - 0.4 % Irgacure819
Usage:
Irgacure819 may be used, after adequate testing, in UV curable formulations for clear and for pigmented coatings on wood, metal, plastic,paper and optical fibers as well as for printing inks and prepregs. For patent reasons, however, the use of this product is not allowed in dental applications.Irgacure819 exhibits at low concentrations an outstanding curing performance in highly opaque white and colored furniture coatings or screen inks containing rutile titanium dioxide or colored pigments and affords minimum yellowing after exposure to sufficient amounts of UV radiation. Additionally the outstanding absorption properties of Irgacure819 allow curing of thick sections.Irgacure819 can be used in combination with other photo initiators such as Chemcure184 orChemcure 651. With the latter it is especially suited to cure polyester/styrene resins as used for glass reinforcedmaterials.Due to its photosensitivity
at longer wavelengths, Chemcure8 can easily be used in combinations with UV absorbers, e.g. Tinuvin 400. It is therefore ideally suited for use in weather-resistant UV curable coatings.The amount of Chemcure8 required for optimum performance should be
determined in trials covering a concentration range.
Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (IrgacureBAPO )
