365nm Organic UV Fluorescent Yellow Green Pigment Invisible Fluorescent Pigment For Anti-counterfeiting Ink
365nm organic uv fluorescent yellow green pigment is usually called anti-counterfeiting pigment because it is invisible in sunlight and visible only under UV lamp, and is usually used in anti-counterfeiting ink.
Invisible organic 365nm UV fluorescent yellow green pigment stands out among phosphors because of its bright color and higher brightness.Its precisely designed formula ensures strong and consistent fluorescence output.
- Controlled Particle Size Distribution (Narrow PSD): Specially engineered to eliminate oversize agglomerates, ensuring exceptional flowability and non-clogging performance in screen and gravure printing.
- Superior Fluorescent Quantum Yield: Provides significantly higher visual luminescence than inorganic phosphors at low addition ratios (0.5%–2.5%), reducing raw material formulation costs.
- Zero Daylight Tinting: Ultra-low residual color in dry print films, leaving no yellowish tint or shadow on security paper or transparent packaging foils.
- System-Specific Rheological Grades: Formulated for seamless integration across solvent-based ink vehicles, UV-curable varnishes, and engineering masterbatches.
- Heavy-Metal Free & Eco-Compliant: 100% organic fluorophore formulation meeting RoHS and REACH guidelines.
365nm Organic UV Fluorescent Yellow Green Pigment Specification:
| Product type | Appearance under sunlight | Emission wavelength | Particle size | Recommended Applications & Carriers |
| UV Yellow Green Y3A | Off white powder | 530nm±5nm | D50≤ 3.0 μm (Top Cut D90 ≤ 12.0 μm) | High-visibility covert security printing, currency threads, packaging marks |
| UV Yellow Green Y3B | Off white powder | 527nm±5nm | D50≤ 4.5 μm (Top Cut D90 ≤ 14.0 μm) | High brightness, poor solubility, good heat and light resistance, high oil absorption. |
| UV Yellow Green Y3C | Off white powder | 533±5nm | Solvent-Dispersible (Controlled PSD) | Clear overprint varnishes, solvent-based security coatings, dip resins |
| UV Yellow Green Y3D | Off white powder | 530±5nm | D50≤ 2.5 μm (Top Cut D90 ≤ 8.0 μm) | High-mesh screen printing (>350 mesh), gravure, security flexo inks |
Note: Data represents typical reference values based on wet laser diffraction analysis. Values are provided as typical guidelines, not binding purchase specifications. Actual batch metrics are certified via Certificate of Analysis (CoA) provided with sample evaluation kits.
Common Formulation Challenges & How We Solve Them
1. Screen Clogging or Blade Streaking During Continuous Printing?
- The Cause: Uncontrolled coarse tailing particles (>15 μm) or secondary re-agglomeration in low-viscosity ink vehicles.
- Nichwell Solution: Formulate with Grade Y3D. With tightly controlled D90 limits, it eliminates coarse particles to ensure uninterrupted high-speed gravure and fine-mesh silkscreen runs without plate wear.
2. Weak Fluorescence or High Pigment Consumption in Thick Films?
- The Cause: Low quantum efficiency requiring high loadings, which can cause luminescence self-quenching and ink bodying.
- Nichwell Solution: Utilize Grade Y3A. Engineered for maximum emission brightness, it achieves vibrant yellow-green luminescence at micro-addition levels (1%–2%), optimizing overall recipe economics.
3. Color Bleeding or Heat Fading in Plastics Processing?
- The Cause: Insufficient thermal tolerance causing molecular structure breakdown during melt extrusion.
- Nichwell Solution: Select Grade Y3B. Its stabilized crystalline structure ensures minimal thermal quenching and low migration in polyolefin and engineering polymer matrices.
Core Applications
- Banknotes & Sovereign Documents: Intaglio printed threads, visa page covert graphics, fiscal stamps, and official tax bands.
- Brand Protection & Traceability: Tamper-evident closure labels, invisible track-and-trace barcodes/QR codes, and luxury packaging seals.
- Industrial NDT & Quality Control: Penetrant crack inspection, cleaning verification, and functional polymer blending verification.
- Specialty Electronics Marking: Automated optical alignment marks for PCB fabrication and component authentication.
Frequently Asked Questions (FAQ)
Q: Does this yellow-green pigment leave a visible yellow tint under daylight?
A: No. When incorporated into vehicle binders at recommended dosage levels (0.5%–2.5%), the dry film or molded part remains clear and transparent under natural daylight, activating only under 365nm UV excitation.
Q: Can Y3D be run on 350-mesh or 400-mesh silkscreens?
A: Yes. Grade Y3D is specifically micronized with a tight upper particle cut to pass freely through high-density screen apertures without clogging or stencil damage.
Q: Which grade is recommended for high-temperature plastic compounding?
A: Grade Y3B is recommended for plastics processing up to 220°C–240°C due to its enhanced thermal stability and low plate-out characteristics.
Q: How does this organic fluorophore compare to traditional inorganic zinc-sulfide phosphors?
A: Organic UV pigments feature much finer particle sizes, superior transparency in varnishes, and higher fluorescent brightness at lower loading levels without settling or abrasive wear on printing cylinders.
Why Choose Nichwell's 365nm Organic UV Fluorescent Yellow Green Pigment
- Trusted Quality & Expertise:
- ISO-Certified Manufacturing: Rigorous QC ensures batch-to-batch consistency.
- Technical Support: Dedicated R&D team for custom formulations (e.g., solvent compatibility, particle size adjustments).
- Global Compliance: REACH, ISO9001 options available.
- Fast Logistics: Reliable global shipping with real-time tracking.
- Industry-Specific Solutions: 10+ years serving security, ink, and coating manufacturers with tailored UV fluorescent pigments.
- Choose reliability—partner with specialists in UV fluorescence technology.
Need a Premium B2B Organic UV Pigment Supplier?
We provide bulk supply, competitive wholesale pricing, and consistent batch quality for chemical manufacturers worldwide. Fill out the inquiry form below with your corporate email to request the complete Technical Data Sheet (TDS), MSDS, or a free testing sample. Our chemical engineering specialists will contact you within 24 hours.