photolumineszierendes Pigment
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Photochrome pigment

Professional Photochromic Dyes | High-Stability Reversible Pigments

Premium organic photochromic pigments for lenses, coatings, and plastics. Fast response times, high fatigability resistance, and customizable activation wavelengths.

Sunlight in a Bottle: Photochromic Pigment

Photochromic Pigment are “smart” materials that undergo a reversible color transformation when exposed to electromagnetic radiation—specifically ultraviolet (UV) light. In 2026, these pigments have evolved from simple novelty items into critical components for UV safety indicators, smart eyewear, and interactive brand protection.

photochromic dyes
sunlight senstive pigment

How It Works: The Molecular Switch

The core of photochromic technology lies in specialized organic molecules, such as Spirooxazines or Naphthopyrans.

  • Indoor State (Resting): The molecules are in a “closed” or folded structure, appearing colorless or transparent.
  • Outdoor State (Activated): When UV photons hit the pigment, they trigger a chemical bond cleavage, causing the molecule to “unfold” into a larger, flatter structure called a merocyanine.
  • The Result: This new shape absorbs specific visible light wavelengths, making the pigment appear vibrantly colored (Rot, Blau, Lila, Gelb,Etc.).
  • Reversibility: Once the UV source is removed, the molecule thermally relaxes back to its closed, colorless state.

Modern Applications & Use Cases

Industry Anwendung Why it Matters
Safety & Health UV Sensor Stickers & Wristbands Provides a clear visual warning when UV levels are high enough to cause skin damage.
Eyewear Adaptive Photochromic Lenses Lenses that darken automatically to protect eyes from glare and harmful UV rays.
Smart Textiles “Sun-Print” Apparel Allows for “hidden” designs that only appear when the wearer steps outdoors.
Security Anti-Counterfeit Labels An interactive authentication method that is nearly impossible to replicate with standard printers.
Consumer Goods UV-Sensitive Packaging Indicates to consumers if a product (like wine or medicine) has been exposed to damaging sunlight.

Photochromic pigment powder are photochromic microcapsules in a powder form . sie sind speziell für den Einsatz in nicht wässrigen Tintensystemen vorgesehen, obwohl ihre Verwendung nicht beschränkt ist . es kann verwendet werden, um nicht wässrige Basis-Flexographie zu formulieren,Uv,Siebdruck,Versatz,Epoxid- und Tiefdruckfarbformulatios. Photochrome Pigmente sind im inaktivierten Zustand farblos,und Farbwechsel bei UV-Lichtquelle. es reagiert auf natürliche Sonneneinstrahlung oder 365nm schwarze Lichter.

Farbe: rot,gelb,blau,grün,Orange,tiefblau, veilchen.

Partikelgröße: <8Mikron

Shelf-life: 2Jahr

Feststoffe: 98% +/-2%

 

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