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Home Pearlescent Pigments Metal Luster Series

Metal Luster Pearlescent Pigments

Metal Luster Pearlescent Pigments

Kolortek's Metal Luster Pearlescent Pigments are iron oxide-coated mica flakes available in two substrate options: natural mica (KT-500 Series) and synthetic fluorphlogopite (KT-7500 Series). Both deliver warm metallic luster with strong opacity and reliable chemical stability. Color tone is controlled by varying the iron oxide coating thickness, producing a consistent range from gold to deep bronze across multiple particle size grades.

  • Item No. :

    KT-500 Series (Natural) / KT-7500 Series (Synthetic)
  • Color Effect :

    Metal Luster
  • Particle Size :

    5-25μm、10-100μm、20-100μm、40-200μm、60-300μm、200-700μm
  • Composition :

    Mica, Iron Oxide / Fluorphlogopite, Iron Oxide
  • Brand :

    Kolortek / OEM
  • MOQ :

    25KG
  • Application :

    Paints & Coatings, Printing, Cosmetics, Soaps, Nail Polish, Epoxy Flooring, Crafts, etc.

 

Technical Description


Metal luster pigments in this line are produced by depositing iron oxide (Fe₂O₃) onto thin mica or fluorphlogopite platelets through a controlled wet-chemical coating process. The resulting layered structure creates opacity and warm metallic reflectance through a combination of absorption and specular reflection—distinct from the interference mechanism used in standard pearlescent pigments.

Color output (gold, copper, bronze, reddish-bronze) is determined primarily by iron oxide layer thickness, which Kolortek controls to achieve consistent D50 values across batches. The KT-7500 Series uses synthetic fluorphlogopite as the substrate, which offers a higher degree of purity, a more uniform platelet geometry, and greater whiteness at the base layer compared to natural mica—translating to cleaner, brighter metallic tones.

Particle size options span 5-25 μm through 200-700 μm, allowing formulators to tune surface texture from smooth, satin finishes to bold, high-sparkle effects within the same color family.

Feature Practical Benefit
Iron oxide coating on mica substrate Non-conductive; eliminates the arc and short-circuit risks associated with aluminum-based metallic powders
Controlled oxide layer thickness Consistent color batch-to-batch; reduces formulation adjustments during production scale-up
Chemical and physical stability Suitable for alkaline systems (e.g., soap, cement-based coatings) and elevated processing temperatures (e.g., plastics extrusion)
Synthetic mica option (KT-7500) Higher purity, lower heavy metal content, and more uniform platelet size—preferred where cosmetic-grade or high-transparency formulations are required

 

Product Pictures


Metallic mica pigment

 

Applications


Industry Specific Application Recommended Particle Size
Paints & Coatings Automotive topcoats, industrial protective coatings, decorative wall paints 10-60 μm, 20-100 μm
Epoxy & Floor Coatings Epoxy flooring, decorative resin floors, self-leveling systems 40-200 μm, 60-300 μm
Printing Inks Gravure, screen, and flexographic printing for packaging and labels 5-25 μm
Plastics Masterbatch, injection molding, blown film, extrusion profiles 10-60 μm, 10-100 μm
Cosmetics & Personal Care Eyeshadow, highlighter, nail polish, soap bars, bath bombs 5-25 μm, 10-60 μm (KT-7500 preferred)
Nail Products Gel polish, nail art powders, dip systems 10-60 μm, 20-100 μm
Craft & DIY Resin casting, candle making, leather finishing, stationery 40-200 μm, 60-300 μm
Specialty Coatings Powder coatings, automotive wraps, marine finishes 20-100 μm, 40-200 μm

 

Product Specifications


Example product shown. Full series data available upon request.

Specification Details
Trade Name Bronze KT-7511
Series KT-7500 (Synthetic Mica)
INCI Name Fluorphlogopite, Iron Oxides
CAS No. 12003-38-2 / 1309-37-1
Color Effect Bronze
Particle Size 10-60 μm
D50 21-26 μm
Composition Fluorphlogopite: 62.0-68.0%; Iron Oxide (C.I. 77491): 32.0-38.0%
Form Powder
Odor Odorless
pH (4% H₂O) 6.0-9.0
Density 2.8-3.2 kg/L
Bulk Density 18-26 g/100 ml
Solubility in Water Insoluble
Brand Kolortek
MOQ Contact us for details

Additional particle size grades (5-25 μm through 200-700 μm) and natural mica variants (KT-500 Series) available. Custom D50 targets and surface treatments on request.

 

Value Proposition & Industry Solutions


Metallic Effects Without the Processing Risks Aluminum and bronze metallic powders deliver high reflectivity but introduce real handling concerns—conductivity in electronic or powder coating environments, oxidation sensitivity in water-based systems, and regulatory scrutiny in cosmetic applications. Iron oxide-coated mica occupies a different position: it produces warm gold, copper, and bronze tones with strong opacity while remaining electrically non-conductive, chemically stable across a broad pH range, and insoluble in water. For formulators working with water-based coatings, alkaline soap systems, or any application where metallic powder use is restricted, this represents a technically sound alternative rather than a compromise.

Substrate Choice Matters The KT-500 natural mica series offers a cost-effective entry point with broad application compatibility. The KT-7500 synthetic fluorphlogopite series is the appropriate choice when formulation purity is a priority—tighter particle size distribution, more consistent platelet geometry, and a cleaner base layer that supports brighter metallic tones. Both series share the same iron oxide coating chemistry and are produced under the same manufacturing controls.

Supply Consistency at Production Scale With 20 years of effect pigment manufacturing, Kolortek maintains batch-to-batch consistency in particle size distribution and color output—factors that directly affect how much formulation adjustment is required between production runs. Consistent D50 values and controlled coating thickness mean fewer surprises when scaling from lab to production. Contact our technical team to discuss your application, request a sample, or obtain full technical data sheets for any grade in the Metal Luster series.

 

Color Chart


Color chart of metallic luster series of natural mica pigmentsColor chart of metallic luster series of synthetic mica pigments

 

 

 

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