PB15:6-Phthalo Blue
PR188 -Naphthol Red
PO71-Pyrrole Orange
PB15:6-Phthalo Blue
organic
epsilon copper phthalocyanine
C32H16CuN8
Phthalo Blue PB15:6 is a structural variant of Phthalo Blue PB15 that produces more yellowish tones.
Phthalo Blues are completely lightfast and stable and are permanent for all paint uses. They are currently used in inks, coatings, and many plastics due to their stability and are considered a standard pigment in printing ink and the packaging industry.
Developed by chemists using the trade name Monastral Blue, the organic blue dyestuff now known as Phthalo Blue was presented as a pigment in November 1935 in London. Its discovery was accidental. The dark color was observed in a kettle where a dye was being made from a British dyestuff plant. The demand for such a pigment came from commercial printers who wanted a cyan to replace Prussian Blue.
PR188 -Naphthol Red
organic monoazo
C33H24Cl2N2O6
This Naphthol Red is yellowish, with a high tinting strength and average drying time. It produces warmer shades and tints.
This Naphthol Red has excellent lightfastness, though it is generally not considered adequate for exterior use.
Naphthol pigments are actually dyes that are "laked" to form pigments. First developed by the German chemical company Hoechst A.G. before World War I, their use in artist paints began in the 1920s.
PO71-Pyrrole Orange
organic, diketopyrrolo
diketo-pyrrolo pyrrole orange
Pyrrole Orange PO71 is a transparent pigment with average or moderate tinting strength. It produces cleaner mixtures than cadmium-based colors.
Pyrrole Orange PO71 has been reported to have excellent lightfastness, and better weather fastness than comparable cadmium pigments.
Pyrrole Orange is one of the most popular diketopyrrolo-pyrrole pigments (DPP), discovered and marketed since the 1980s by Ciba-Geigy. It is used mainly in printing inks and plastics. It has also been used in automotive and industrial paints. In art materials, it has become most widely used in acrylics.
UPC Code: 743162035670