News & Insights

Pigment Selection for Printing Inks: Every Formulator’s FAQ Pigments are the most expensive component in printing ink — typically 15-30% of total formulation cost — and they determine everything downstream: color, printability, durability, and regulatory…

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…

TL;DR — Blue Wool Scale（BWS）7 级和 8 级之间不是差”一格”，是对数差距。BWS 7 的颜料在氟罗里达外墙涂料里撑不过 5 年，而汽车 OEM 涂料直接不接 BWS 7。更要命的是：厂商给你的耐光数据，99% 是用全色（full shade）测的。你实际用的配方如果是冲淡色（reduction），耐光可能直接掉 3-4 级。一份靠谱的耐光数据，必须写清楚三件事：测试浓度、暴露标准、评级方法。缺任何一个，别信。 7 级和 8 级，不是差一个数字那么简单 先说一个大部分人不知道的事：Blue Wool Scale 是对数尺度。 每一个等级之间，耐光能量大致翻倍。BWS 1 在 Xenon arc 下几小时就变，BWS 8…

TL;DR 100 grams is not a qualification sample. It’s a first-look drawdown. If you’re running dispersion, viscosity, colorimetry, and QUV aging, you need 200-300 g minimum, and that assumes nothing fails. Run tests in the…

TL;DR — If PR57:1 red ink looks fine on the printed web but bleeds into the LDPE layer during extrusion lamination at 320°C, the culprit isn’t solvent retention. It’s thermal dissolution-diffusion. Lithol rubine has a…

FDA 21 CFR and Your Pigment Spec — Indirect Food Contact, No Jargon, No Guessing TL;DR — The US FDA does not approve or certify pigments. It publishes conditions of use under 21 CFR. If…

TL;DR REACH compliance for organic pigments is not a company-wide badge — it is product-by-product. A supplier may have full registration for PB15:3 but nothing for PY83. Knowing which specific CI pigments carry registration, what…

TL;DR — NC-based gravure inks that thicken or gel above 35°C aren’t just “heat sensitive.” The real culprit is acid-catalyzed nitrocellulose degradation, kicked off by residual acidic groups on the pigment surface — especially barium…

Introduction: PY83 and PY12 Are Both Diarylide Yellow Pigments Pigment Yellow 83 (PY83) and Pigment Yellow 12 (PY12) are two widely used Diarylide Yellow organic pigments. Both pigments are known for their bright yellow shades,…

Copper Price Surge and Phthalocyanine Pigment Costs: What PB15:3 and PG7 Buyers Need to Know in 2026 Summary: LME copper prices have surged past $10,400/tonne in mid-2026, with spot prices touching $11,300/tonne by late June…