UV2329 Invisible Blacklight Fluorescent Epoxy Paint

UV2329 paint is an invisible fluorescent epoxy coating specially developed by StardustColors to create markings that are invisible in normal light but are clearly visible under a blacklight (UV-A). 

This system combines the mechanical performance of a professional-grade epoxy resin with invisible fluorescent pigment technology to create designs, guide lines or markings that remain completely discreet until illuminated by an ultraviolet light source within the 360–390 nm range. 

Unlike conventional fluorescent paints that are visible in daylight, UV2329 is virtually colourless under normal lighting. As soon as it is exposed to a UV-A lamp, it immediately glows and reveals an intense fluorescent colour. This technology allows you to create spectacular effects whilst remaining completely discreet when the installation is not activated. 

Invisible Blacklight technology

The UV2329 system is based on fluorescent pigments specially selected to react to ultraviolet light.

Under normal light:

• the paint remains virtually invisible; 
• it retains a semi-transparent appearance; 
• it is particularly discreet on white or very light-coloured backgrounds. 
• Under a blacklight:
• the pigments instantly become fluorescent;
• the colours appear with very high intensity;
• the marking becomes perfectly visible.

On dark surfaces, the film may reveal a slight whitish tinge. For the best aesthetic result, application over the white or colourless P520 epoxy primer is recommended. 

Direct adhesion to the following materials:

Concrete, metals and wood

Eight emission colours available

The UV2329 range is available in 8 fluorescent colours:

• Yellow / Lime green / Green / Blue / Purple / Pink / Red / White

Each colour has its own emission wavelength when excited by UV-A light.

The pigments are optimised to work with:

• UV-A 365 to 395 nm
• maximum excitation around 365 nm
• can also be used with blue-rich light (400–450 nm), although with lower efficiency. 

Beyond its visual effect, UV2329 is a professional-grade epoxy paint designed for surfaces subject to significant mechanical stress.

Its solvent-free formulation (>99.9% solids) produces an extremely durable coating:

• excellent surface hardness;
• high wear resistance;
• excellent abrasion resistance;
• water resistance;

The coating is therefore suitable for both decorative applications and industrial environments requiring long-lasting signage.

Areas of application

UV2329 paint can be used to create invisible markings on a wide range of prepared surfaces.

It is particularly suitable for:

• laser tag courses; 
• escape rooms; 
• immersive sets; 
• artistic murals; 
• industrial floors; 
• technical walls; 
• stairs; 
• AGV robot guidance; 
• traffic areas; 
• discreet indoor signage. 

The product is intended exclusively for indoor use and is not recommended for permanent exposure to the elements. 

A three-component epoxy system

The kit is supplied pre-measured and includes:

• Component A: Epoxy resin (1.125 kg) 
• Component B: Hardener (0.375 kg) 
• Component C: Fluorescent pigments (0.187 kg) 

There are two preparation methods:

• use of the complete kit without weighing; 
• preparation by weight according to the ratio: 

6 parts of component A + 2 parts of component B + 1 part of component C

i.e.:

1125 g + 375 g + 187 g. 

Please note: once the components have been mixed, the mixture has a limited pot life and must be used in its entirety before it sets. Mix only the quantity required.

It is essential to adhere strictly to these proportions to ensure that the coating sets properly and achieves its final performance characteristics.

Application

The paint can be applied:

• with an epoxy roller; 
• with a brush; 
• with an air-powered spray gun (nozzles 1.5 to 2.4 mm). 

Airless application is not recommended. 

Two thick coats are recommended, with an interval of approximately 24 hours between coats.

Average coverage:

280 to 330 g/m²

Final film thickness:

200 to 300 microns. 

Drying time:

At 20°C:

• dust-free: approximately 6 hours;
• touch-dry: 12 to 16 hours;
• ready for recoating: 24 hours;
• fully cured: 8 to 10 days.