Paints

We offer several Lumilux® after-glowing pigments that absorb daylight or ultra-violet radiation to produce a variety of afterglow or "glow-in-the-dark" effects for safety products as well as for toys and novelties, suitable for use in paint formulations.

Our Lumilux® afterglow pigments are perfect to produce long afterglow paints. We offer two different types of phosphorescent pigments for best use in various matrix. There are zinc sulfide based products (N-grades), useable for solvent based paints as well as for water based paints.
The rare earth-doped strontium aluminates (SN-grades) are only useable for solvent based paints.

Most pigments can be used in accordance to the European Standard EN 71-3: Safety of toys - Part 3: Migration of certain elements

The relative luminosity and long afterglow properties of pigments are closely linked with their crystalline perfection, particle size distribution and the transparency level of individual crystals. Incomplete crystal formation causes cloudiness or mechanical damage to the crystals under high shearing forces and fragmentation under pressure, which reduces the level of performance.

Phosphorescence of larger particles is more intense than phosphorescence of smaller ones. However, Lumilux® long afterglow pigments are supplied in a range of defined grain size distributions to meet the demands of various applications. Finer grain size grades are not produced by grinding larger particles but are synthesized independently under special crystallizing conditions. As a result, this reduces the negative differential in luminance compared with larger grain size grades.

Phosphorescent Water-Based Dispersion Paints
To formulate an aqueous dispersion paint with a Lumilux® Green N pigment, use a commercially available transparent paint. The best effect will be achieved by mixing 120 parts by weight of the aqueous dispersion paint and 300 parts by dry weight of the Lumilux® afterglowing pigment. 

To prevent breakdown of the crystal structure in afterglow pigments, the mixing speed should be very slow. If the paint is stored without being moved for some time, settling might occur. This is a result of the high density of the afterglow pigments but should not affect the quality of the paint.

Honeywell Specialty Materials can produce customized luminescent pigments to customers specifications.

For further information, please contact us.