User Manual

The ideal properties for oxidative drying offset inks

• The oxidative drying offset inks should contain no migratable components (0.0 mass% at 110°C).

This means that the ink contains no low melting polyethylene wax. High melting polyethylene wax

(T>133°C) and preferably PTFE-wax can be useful and are allowed. Further, the ink contains no mineral

oils and no non-reacting-vegetable-oils (esters of (almost) saturated fatty acids (e.g. stearic acid) and

alcohols (e.g. butanol))

• For oxidative drying offset inks complete oxidative drying of all reacting-vegetable-oils should take

place. This means that anti-oxidants that prevent oxidative drying should not be used. Furthermore, it

is known that temperature has a large influence on the rate of oxidative drying (see Graph 1). Therefore

a minimal storage temperature of 20 °C is strongly recommended during oxidative drying of preprinted

media.