Synstar Red Blue Synthetic Mica Pigment – KT-7405

Synstar Red Blue Synthetic Mica Pigment – KT-7405

Pearlescent Pigments › Multicolor Series › Synthetic Mica / Fluorphlogopite (KT-7000)

KT-7405 Synstar Red Blue is a synthetic Fluorphlogopite mica pearlescent pigment in the 10–60μm particle size range that produces a dual red-blue absorption color alongside a silver-white specular reflection — a color-complex grade that sits outside the standard single-hue range of the KT-7000 Multicolor Series. The "Red Blue" designation reflects a pigment that reads differently at different viewing and light conditions: the absorption color contains both red and blue spectral components, producing a nuanced, multi-dimensional visual character. On the Fluorphlogopite synthetic mica substrate, this complex color is delivered with higher substrate purity and fewer dark mineral inclusions than natural mica equivalents — relevant for nail, cosmetic, and decorative coating applications where surface quality at the platelet level affects the finished result.

KT-7000 Synstar Series — Standard Grade Overview (10–60μm)

The KT-7000 Synstar sub-range covers the main color variants in synthetic Fluorphlogopite mica at the standard 10–60μm particle size. KT-7405 Synstar Red Blue is a specialty color within this group — it combines red and blue absorption components for a more complex visual output compared to the pure single-hue grades.

Flash grades (10–100μm) are available for KT-7415 Red, KT-7419 Purple, KT-7435 Green, and specialty colors — see KT-7415A, KT-7419A, KT-7435A, KT-7482, KT-7483, KT-7484, KT-7485 in the KT-7000 flash range. Contact Kolortek for the complete Synstar color card.

Technical Specifications

Technical Characteristics

Dual-component red-blue absorption — complex color behavior: Standard KT-7000 Synstar grades deposit a single-hue colorant on the Fluorphlogopite mica substrate. KT-7405 Synstar Red Blue uses a colorant system that absorbs across both the red and blue spectral regions simultaneously. The resulting absorption color is not a simple purple (which would result from equal red and blue) but a complex, shifting hue that reads differently depending on the light source angle, viewing angle, and base color beneath it. In practice, this produces a more visually interesting surface than a single-hue red or blue grade alone — useful in nail lacquer, cosmetics, and decorative coatings where color depth and complexity are part of the design brief.

Synthetic Fluorphlogopite — substrate quality rationale: Fluorphlogopite is manufactured synthetically from controlled raw materials without the trace mineral inclusions present in natural muscovite mica. In a complex dual-color grade like KT-7405, the cleaner substrate allows the dual red-blue absorption to express fully without the visual noise of dark inclusion spots. At 10–60μm, individual platelets are not large enough to see individually under most viewing conditions, but substrate purity still affects the overall color saturation and luster clarity across the pigment mass.

Application on varied substrate colors: The red-blue absorption color of KT-7405 is visible across dark, light, and transparent substrates — no dark base is required. Over dark or black bases, the silver specular flash contrasts more strongly with the base, amplifying the dimensional quality of the dual red-blue color at diffuse angles. Over transparent resin or clear systems, the complex color is visible through the depth of the application medium.

Application Range

Formulation Notes

Low-shear addition — standard mica pearl protocol: Add KT-7405 at the letdown stage after all high-shear dispersion steps are complete. Use low-shear paddle or anchor mixing. Platelet fracture from high-shear equipment reduces D50, which reduces luster clarity and flattens the dual-color absorption character. The complex visual of KT-7405 depends on intact platelet geometry — compromising this through mechanical shear eliminates the effect that justifies the synthetic mica grade selection.

Evaluating the dual-color effect: The red-blue absorption color of KT-7405 reads differently under different lighting conditions — incandescent, fluorescent, and daylight all emphasize different aspects of the dual absorption. If you are qualifying this grade for a specific product, evaluate drawdown samples under all relevant lighting conditions the finished product will encounter, not only in the lab under a single light source. The color complexity that makes KT-7405 visually interesting in some lighting conditions may read differently in others.

Kolortek has produced the KT-7000 synthetic mica Multicolor Series alongside the broader pearlescent pigment range for over 20 years, with consistent colorant deposition and D50 particle size distribution across batches. TDS and SDS are available on request for KT-7405.

Frequently Asked Questions

Q: What does "Red Blue" mean as a color designation — is it purple?
A: Not exactly. Synstar Red Blue designates a pigment whose colorant absorbs across both the red and blue spectral regions simultaneously. The visual result contains both red and blue color components, but the ratio and the way they interact with different light sources and viewing angles means the color reads as more complex than a simple purple — which is what you get when red and blue are mixed in a flat colorant system. In practice, KT-7405 will read differently in incandescent versus cool white fluorescent light, and differently at direct versus oblique viewing angles, due to the interaction between the silver specular reflection and the dual-component absorption. Evaluating drawdown samples under multiple lighting conditions is the most reliable way to understand how this grade will perform in your specific application.

Q: When should I choose KT-7405 Synstar Red Blue over KT-7424 Synstar Violet?
A: KT-7424 Synstar Violet is a single-hue violet pearl — consistent, predictable violet-purple at all lighting and viewing conditions. KT-7405 Synstar Red Blue is a dual-component grade with more complex, variable color behavior that responds differently to different light and angle conditions. Choose KT-7424 when you need a consistent violet pearl that reads the same across all lighting environments. Choose KT-7405 when the design intent is a more complex, multi-dimensional color character that changes subtly depending on light source and viewing angle — a more distinctive visual at the cost of less color predictability.

Q: Is a natural mica equivalent of this color available?
A: The KT-6000 natural mica Multicolor Series covers a broad range of single-hue colors but does not include a direct "Red Blue" equivalent. The KT-7000 synthetic series is where the more complex and specialty color combinations are available. If cost is a constraint and substrate purity is not critical, a blend of KT-6000 red and blue grades could approximate the visual — but the blend behavior and substrate inclusion count would differ. Contact Kolortek to discuss the options.

Request Samples or Technical Data

The dual red-blue character of KT-7405 Synstar Red Blue is best understood from a physical drawdown sample evaluated under multiple lighting conditions. Contact Kolortek to request a sample alongside comparative Synstar grades, download the TDS, or discuss the full KT-7000 Synstar color range for your formulation development.