High-Performance Photochromic Pigment Powder & Dye for Inks, Coatings, Plastics & Optical Lenses
Nichwell provides premium photochromic pigments (UV color-changing powder) that reversibly change from colorless to vibrant colors when exposed to sunlight or UV light (300–360nm).
Whether you need high-purity dyes for R&D or robust microencapsulated powders for industrial manufacturing, we have the right solution.
Fast Response: Full color change in 3–60 seconds.
Extreme Durability: MC Powder is heat-resistant up to 230℃.
Eco-Friendly: RoHS & REACH compliant.
Low MOQ: Starting from just 0.1Kg for R&D testing.
Which Product Form Fits Your Production?
We offer two distinct series to meet different processing requirements:
1. OP Powder (Photochromic Dye) – Unencapsulated
Formulated with high-purity photochromic compounds. Best for solvent-based systems and precise optical applications.
- Key Feature: Extreme clarity and fastest response rate.
- Best For: Optical lenses, smart window films, high-end cosmetics, and R&D lab formulations.
- System Match: Solvent-based systems only.
2. MC Powder (Microencapsulated Pigment) – Industrial Grade
The photochromic dye is protected by a microscopic polymer shell (3–5μm), dramatically increasing its stability.
- Key Feature: Superior weather resistance and heat stable up to 230℃.
- Best For: Plastic injection/extrusion molding (PVC, PP, PMMA), screen printing inks, and industrial coatings.
- System Match: Both water-based and solvent-based systems.
Photochromic Color Chart showing indoor vs outdoor states
Technical Specifications:
- OP Powder – Photochromic Dye
| High Purity | Unencapsulated photochromic compound with minimal additives |
| Fast Response | Full color change in 3–60 seconds under UV/sunlight |
| High Sensitivity | Responds quickly to UV-A (300–360nm) |
| Solvent Compatible | Suitable for solvent-based systems and R&D formulations |
| Reversible Cycle | Quickly fades back to original color away from light |
| Versatile | Ideal for optical lenses, smart films, textiles, and cosmetics |
- MC Powder – Microencapsulated Photochromic Pigment
| Microencapsulated | Protective shell extends service life & weather resistance |
| Heat Resistant | Stable up to 230℃ for plastic injection & extrusion |
| Uniform Particle Size | 3–5μm for easy dispersion |
| Fast Response | Full color change in 3–60 seconds under UV/sunlight |
| Reversible Cycle | Quickly fades back to original color away from light |
| Broad Compatibility | Works with inks, coatings, PVC, PP, PMMA, acrylic resins |
Application
OP Powder Applications
Optical Lenses & Smart Windows
Textiles & Fibers
Cosmetics & Personal Care
R&D and Formulation Testing
High-end Specialty Coatings
MC Powder Applications
Screen Printing & Inks
Coatings & Paints
Plastic Molding (Injection, Extrusion)
Anti-Counterfeiting & Security
Smart & Fashion Products
How to Choose OP Powder vs MC Powder
| Your Application | Recommended Product |
|---|---|
| Photochromic material R&D, formulation testing | OP Powder |
| Optical lenses, smart windows, high-end films | OP Powder |
| Cosmetic & personal care products | OP Powder |
| Mass production of color-changing inks & coatings | MC Powder |
| Plastic injection, extrusion, molding (>200℃) | MC Powder |
| Applications requiring long-term stability & weather resistance | MC Powder |
Standard Packaging & MOQ
We support businesses of all sizes, from formulation testing to mass production.
- MOQ: Flexible MOQ starting at 100g.
- Packaging:
- 1 kg / Aluminum foil bag (Samples & small orders)
- 10 kg or 25 kg / Fiber drum (Mass production)
- Global Shipping: Fast dispatch via DHL/FedEx or sea freight.
Storage
For OP Powder: Extra care required – store sealed in a cool, dry, dark environment (below 25℃) to prevent premature degradation.
MC Powder
Store in a cool, dry & dark environment (below 25℃)
Avoid freezing, high heat & long-term UV exposure
Keep sealed to protect microcapsules
Shelf life: 12 months when properly stored
Test compatibility before mass production
FAQ
Q1: How fast does the powder change color?
A1: Our photochromic pigments are highly sensitive. They undergo a full color change within 3 to 60 seconds under UV light or direct sunlight, and fade back quickly when moved indoors.
Q2: Can I use this powder for plastic injection molding?
A2: Yes! We strongly recommend our MC Powder for plastics. Its microencapsulated shell provides excellent heat resistance up to 230℃, making it safe for injection extrusion without burning the pigment.
Q3: Do you offer testing samples?
A3: Absolutely. We encourage formulation testing. Please contact our sales team with your application details, and we will arrange the appropriate samples for your R&D.
Related Products
As a leading manufacturer of specialty pigments, we also provide premium UV Fluorescent Pigments , Thermochromic Pigments ,Perylene Pigments and NIR Absorbing Dyes for intelligent packaging and security printing.