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Radiation curable coatings are significantly more difficult to mat than liquid coatings. In conventional liquid
coatings, solventborne or waterborne, considerable film shrinkage occurs during drying and curing, through the loss of volatiles. A 40 to 80 % volume reduction usually takes place, when the film shrinks to its dry solid form. When low gloss is required in UV cured systems, a variety of matting agents can be added to the formulation, as long as the system maintains a low viscosity, for ease of application.
The purpose of this study was to:
• Evaluate the influence of the addition of ORGASOL ultrafine microporous polyainide
powders on the physical appearance and the mechanical properties of UV cured coatings
• Obtain low gloss coatings without large increase of the system viscosity while in the liquid
form.
