What are lightfast pigments?
Lightfastness is a property of a colourant such as dye or pigment that describes how resistant to fading it is when exposed to light. Inorganic colourants are considered to be more lightfast than organic colourants. Black colourants are usually considered the most lightfast.
What does fugitive colors mean?
A fugitive color is a pigment that, when exposed to certain environmental conditions such as sunlight, humidity, temperature or even pollution, is less permanent. Over time the color can change, lighten, darken or even almost disappear. Basically think of fugitive colors as temporary.
What does lightfast mean in watercolor?
Lightfastness Rating Lightfastness is the ability a dye or pigment has to endure light and retain its original colour over time. To sum up, the better the level, the more resistant the colour is to fading when exposed to sunlight.
What is pigment PY74?
Monoazo Yellow (PY74) Pigment Yellow 74 (C.I. 11741) is an Azo Monoarylide organic pigment suitable for applications including paints, coatings and inks. PY74 is a greenish shade yellow pigment. It has high color strength and exhibits good light and weather fastness.
What does lightfast mean?
Definition of lightfast : resistant to light and especially to sunlight especially : colorfast to light.
What is lightfast fabric?
Lightfastness typically means the degree and duration to which dye resists fading due to constant light exposure. Simply explained the amount of time your fabric sits in the sunlight before it starts to fade in color.
What is PBr24?
Pigment Brown 24 (C.I. 77310) is a buff chrome titanate complex inorganic pigment with a chemical formula of (Ti,Cr,Sb) O2 and rutile lattice (tetragonal) structure. We are a leading global manufacturer of Chrome Antimony Titanium Buff Rutile (PBr24) pigments.
Is Blue fugitive color?
There are lots of examples of fugitive pigments, but the most common modern culprits come down to just a few, in my opinion- Alizarin Crimson, Brown Madder, Opera Rose, and Aureolin Yellow. It’s the warm hues that have the most issues, whereas blues tend to perform well.
How can you tell if paint is lightfast?
To help you identify paints that are lightfast, look for the official ASTM rating information on individual paint tube labels. You will also find full ASTM information on each brands Colour Chart.