What is LUNAJET®?

In a hydrophilic environment, LUNAJET® remains highly stable due to the charge repulsive group, and in a hydrophobic environment, the charge repulsive group does not work effectively, helping it to maintain high stability due to the steric repulsive group.
In a hydrophilic environment, LUNAJET® remains highly stable due to the charge repulsive group, and in a hydrophobic environment, the charge repulsive group does not work effectively, helping it to maintain high stability due to the steric repulsive group.In addition, the surface of the pigment is coated with a polymer, and by making full use of these, a dispersive stable group, charge repulsive group and a steric repulsive group built into the polymer, create an encapsulated pigment dispersion facing outward.
Kao originally developed a polymer dispersion containing charge repulsive groups and steric repulsive groups, and by coating the pigment surface with the polymer dispersion, developed an encapsulated pigment dispersion that disperses the pigment at the nano-level and has high stability under hydrophilic and hydrophobic environments. (the size of the pigment dispersion is 50 to 120 nanometers.)
This technology suppresses pigment clumping, enabling the stable dispersion of pigments in ink.
Stable ink jetting can also be achieved even with long printing times, and stable image quality can be obtained because the pigments are uniformly dispersed on the media.
As a result, we succeeded in developing a water-based pigment inkjet ink that reduces the environmental load of soft package films, which had previously been difficult to print on using water-based inks.