PB15:1 vs PB15:3 — Same Blue Pigment, Two Different Jobs
TL;DR: Both are copper phthalocyanine blue. Same molecule, different crystal. PB15:1 is alpha — reddish shade, lower crystallinity, easier to disperse. PB15:3 is beta — greenish shade, high crystallinity, won’t flip phase at 200°C. Use PB15:1 in solvent inks and liquid coatings. Use PB15:3 in powder coatings and engineering plastics. Pick wrong, and you get … Read more