>>Photoluminescent Pigments

Product	Chemical Compound	Average Particle Size	Persistence	Emission Color	Daylight Body Color	Suggested Uses
2330SBW	ZnS: Cu	˜12 microns	˜4 hours	Green	Slightly Yellow	Coatings, Sprays, Paints, Films, Inks
2330MBW	ZnS:CU	~ 14 microns	~ 5 hours	Green	Slightly Yellow	Screen Printing, Paint and Coatings
2330LGY 2G	ZnS:CU	~ 18 microns	~ 6 hours	Green	Slightly Yellow	Plastics, Latex
2330LBY	ZnS:CU	~ 20 microns	~ 6 hours	Green	Slightly Yellow	Plastics, Latex
2330XLY2 2G	ZnS:CU	~ 30 microns	~ 9-10 hours	Green	Slightly Yellow	Developed for Longer Decay Applications
P170140 SPS	Sr2MgSi2O7	~ 18 microns	~ 20 hours	Blue	Off White	Coatings
P170140	Sr2MgSi2O7	~ 25 microns	~ 24 hours	Blue	Off White	Plastics
P500480	ZnS: Mn:Cu	~ 16 microns	~ 3 hours	Orange	Pale Peach	Whenever a ZnS alternative color is desired

Choose the Right Pigment

The colors green, bluish green and orange were the only choices for many years. Ask us about our new long glowing patented blue. Determine how long you want your items to glow. Longer glow pigments generally cost more. Novelty items – shorter glow? Home and Office Safety Items – longer glow? (Be safe at night with reliable emitted light)

P170 Blue (Magnesium Strontium Silicate)

USRO phosphorescent blue offers a more relaxed and friendly decorator color. Our product does not decompose in the presence of water. It is weather resistant and Ultraviolet Burn Resistant. The color blue has been shown many times to be
more readily accepted by impartial panels than other colors. Can be mixed with organic fluorescent pigments to achieve other colors… both in daylight and in the dark!
Some suggestions: Flashlights, Switch Plates, Outlet Covers, Decorative Trim, Holiday Decorations, Pill Bottle Lids, Glass
Door Appliqués and Signs

Light In Light Out

If you will remember these key factors, your products will show better performance.

• Light must reach the photoluminescent particles to supply the energy needed to glow.
• Light from the glowing particles must reach the observer’s eye.
• Clear plastic or paint will allow more light in and more light out. Select your matrix carefully.
• Any translucent or opaque materials will act to reduce light in and out of your plastic or paint.
  Avoid filtering or blocking light.
• Test your prototypes to see how long they take to absorb enough light energy to perform well.

How to Achieve the best results from your products (Process Suggestions)

Our photoluminescent pigments are very pure inorganic crystals. You will achieve best results if you minimize grinding
or high energy mixing, which can scratch crystal surfaces or fracture particles. If your process has a milling or high energy mixing step, try adding our pigments at or near the end of that process cycle to minimize damage to the crystal surfaces.
When a smooth appearance is desired in paints, inks or other coatings, specify a smaller average particle size pigment.
Experiment with several levels of loading to find your best combination of cost and glow. NOTE: Do NOT expose ZnS pigments to strong mineral acids. Decomposition can occur.

Does Particle Size Matter?

Is smaller better? It certainly can be, depending on your process. If a few large particles can cause trouble, we may have the answer…..2330SBW

Why Buy ZnS Green Instead of Strontium Aluminates

• ZnS pigments are stable in the presence of water.
• ZnS pigments have higher initial brightness
• ZnS pigments are less expensive
• ZnS pigments can partially replace Strontium Aluminates in formulas to increase Long Wave UV
  brightness and decrease raw material cost.

USR Optonix can provide guidance in pigment selection and use, but we cannot be responsible for any specific end use.  All information provided is deemed accurate but is not warranted.  Our customers are responsible for all necessary testing and approvals to ensure the pigments are suitable for their chosen end uses.