Question 1

What is the shelf stability of fluorescent pigments?

Accepted Answer

Fluorescent color pigments are stable indefinitely if stored in a cool, dry place in closed packaging.

Question 2

What is the lightfastness of fluorescent pigments (blue wool scale)? Is there any difference in lightfastness among Brilliant series? Do certain fluorescent colors have better light stability than others?

Accepted Answer

In general, fluorescent pigments typically have a blue wool scale rating of 1 or less.  Lightfastness of the pigment itself is dependent upon a number of factors including dyes present and the polymer host.  Certain grades have better lightfastness than others (BGP/BSR/BNF/BFE better than BMS, for example) and certain shades perform better than others, e.g., yellow performs better than pink.  Techniques can be employed to improve lightfastness in application (see 'How to Improve Lightfastness' FAQ below).

Question 3

Is it possible to improve the exterior durability of fluorescent pigments without losing the fluorescent effect?

Accepted Answer

In addition to the pigment type selected, lightfastness in application is impacted by pigment loading and film thickness.  The thicker the film and higher the pigment loading, the better.  The best way to protect fluorescents against UV degradation is to apply a clear overcoat containing UV absorber.  Thus, if used in a coating application, multiple coats of fluorescent paint, followed by a clear coating with UV absorber will allow for the best possible performance.

Frequently Asked Questions

Email

Teléfono

Dirección

Email

Teléfono

Dirección