lxT-310 / 311  SERIES

Aron IxT-310 / 311 pigments are solvent resistant fluorescent pigments for use in inks, coating & PVC formulations based on solvents. These pigments can also be used in water-based formulations where long term storage stability is required.

Being organic in nature, the pigments are, in most cases, easily wet out and dispersed in solvent based vehicles or liquid resins by stirring ( Cowles Dissolver). Formulations produced by such means give Hegman Gauge reading 4.5-5.0 for application by spray, brush and roll, or knife coating. If finer particle sizes are required, these pigments can be wet ground in suitable formulations by wet milling.

The fact that these pigments are based on thermoset type resin permits them to be used in various coatings or inks made with nitrocellulose, polyvinyl chloride-acetate, polyamide, acrylic, chlorinated rubber and other resins which require strong oxygenated types of solvents, such as aromatics, alcohols, esters, (or) ketones, combination of these solvents should be evaluated before use.

Mixtures of some solvents may have severe effect on these pigments than the individual solvents alone. An example of such mixture is equal parts of methyl ethyl ketone and ethyl acetate, which will partially solvate the pigments, producing some swelling of the particles and bleed. While each solvent alone will not. A mixture of ethyl acetate and ethyl alcohol is another example of this effect. This combination will partially solvate the pigments and causes more severe swelling and bleed of the particles than with single solvents.

Because it is impossible to completely evaluate the effect of all solvents and mixtures of solvents on these pigments, they must be tested for satisfactory performance in the system intended to be used with them.

Color bleed may be problem in some instances, usually with red colors. It can occur even though the pigment resin matrix is thermoset type and insoluble, and the fluorescent dye is in solid solution throughout the pigment particles and not merely absorbed on the surface. Some solvents leach enough dye from insoluble particles so that color transfer may be noticeable when the coating surface involved contains significant amounts of plasticizers.

There pigments are suitable for paper coating applications, either solvent or water or latex based where long-term shelf stability is required. Since the pigments are not softened by heat or pressure, the coated paper can be calendared without glazing or sticking on the rolls.

IxT Pigments from Aron Universal Ltd. Have been pre-approved through Duke University for the ACMI certification program. These pigments are essentially non-toxic and does not contain inorganic phosphors.