India Phthalocyanine Pigment Blue 15:4 - Brilliant Blue for Paint and Ink

India Phthalocyanine Blue 15:4 is a solvent-stable, copper-based pigment engineered through advanced ball milling technology to deliver intense chromaticity and robust performance in demanding applications. As a red-shaded variant within the phthalocyanine blue family (Color Index 15:3 classification), this A-type pigment exhibits a deep, rich hue that aligns with Asian three-primary-color specifications while demonstrating exceptional thermal resilience and chemical resistance.

‌Core Product Characteristics‌

‌Optical Performance‌:
The pigment’s unique phase-change synthesis via ball milling produces a stable crystalline structure (β-phase), achieving a red-toned blue shade with reflectance peaks at 460 nm (blue) and 640 nm (red) wavelengths. Its high tinting strength enables 94–96% color yield at 5% loading in full-shade applications, outperforming conventional phthalocyanines by 15–20% in chromatic intensity.

‌Durability Profile‌:

• ‌Thermal Stability‌: Withstands sustained exposure to 250°C (ASTM D2481) without color shift or molecular degradation
• ‌Lightfastness‌: Rated 7–8 on the Blue Wool Scale (ISO 105-B02), ensuring minimal fading under prolonged UV exposure
• ‌Chemical Resistance‌: Impervious to alcohols, esters, and aliphatic hydrocarbons (tested per ASTM D1308)

‌Processing Properties‌:
While dispersion requires optimized milling due to inherent particle hardness (Mohs 2.5–3.0), the pigment delivers superior solvent compatibility, particularly in ketone- and xylene-based systems. Its controlled particle size distribution (D50: 0.7–1.2 μm via laser diffraction) balances opacity (85–90% at 20 μm film thickness) and gloss characteristics in solvent-borne formulations.

‌Application Expertise‌

‌Industrial Coatings‌:

• Automotive refinish systems requiring 250°C bake-dry cycles
• Marine coatings with salt spray resistance exceeding 1,000 hours (ASTM B117)
• Powder coatings for appliances meeting UL 94 V-0 flame retardancy

‌Printing Inks‌:

• Solvent-based flexographic inks for non-porous substrates (PE/PP films)
• Metal decorative inks with 200°C curing compatibility
• Gravure inks achieving 1.8–2.0 optical density at 12% pigment loading

‌Plastics & Polymers‌:

• PVC calendaring for synthetic leather (0.8–1.2% loading)
• Polyolefin masterbatches stable at 220–240°C extrusion temperatures
• Engineering resins (PA/ABS) with ΔE<1.5 after 1,500-hour weathering

‌Specialty Markets‌:

• Water-based architectural paints meeting VOC <50 g/L regulations
• Textile printing pastes with wash-fastness >ISO 105-C06 Class 4
• Artist-grade oil colors requiring ≤5% viscosity change over 24 months

‌Technical Specifications‌

• ‌Color Index‌: C.I. Pigment Blue 15:4
• ‌CAS No.‌: 147-14-8
• ‌Molecular Formula‌: C₃₂H₁₆CuN₈
• ‌Oil Absorption‌: 35–40 g/100g (ISO 787-5)
• ‌pH Stability‌: 4–11 (ASTM E70)
• ‌Bulk Density‌: 450–500 kg/m³ (ISO 697)

‌Formulation Guidelines‌

‌For Solvent Inks‌:

• Pre-disperse with 15–20% resin varnish (ethyl cellulose recommended)
• Mill to Hegman 7–10 μm (ASTM D1210) using zirconia beads
• Optimize flow with 0.5–1.0% silicone-based additives

‌In Coatings‌:

• Combine with 2–3% dispersants (polyurethane type, 50% active)
• Achieve ΔE<1.0 color matching via 0.2–0.4% toners
• Enhance weather resistance using 1–2% HALS stabilizers

‌Sustainability & Compliance‌

• REACH registered with full SVHC disclosure
• Contains <1 ppm PCBs, complying with ECO PASSPORT by OEKO-TEX®
• Manufacturing process reduces VOC emissions by 40% vs. traditional methods

‌Packaging & Storage‌

Supplied in 25 kg moisture-resistant kraft/PE multilayer bags with UV barriers. Store below 35°C at ≤65% RH for 24-month shelf life. Bulk quantities available in 500 kg FIBC containers with discharge spouts.

‌Technical Support‌

Manufacturers benefit from:

• Dispersion optimization protocols for challenging resin systems
• Accelerated aging simulations (QUV/ Xenon arc testing)
• Regulatory documentation packages for Asian and EU markets

India Phthalocyanine Blue 15:4 bridges the gap between intense coloration and industrial-grade resilience, offering formulators a cost-effective solution for applications demanding both visual impact and technical performance.

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