KT-90273 Cyan/Violet Chameleon Mica for resin applications

What Makes KT-90273 a True Chameleon Mica

The color travel in KT-90273 is driven by thin-film optical interference across its multi-layer coating — natural mica substrate carrying alternating layers of titanium dioxide and silica. As the viewing angle changes, the dominant wavelength of reflected light shifts from cyan to violet. The effect is goniochromatic, meaning it is angle-dependent rather than simply iridescent, producing what our application lab would describe as a "color that moves with the observer."

One thing formulators consistently notice in our trials: the perceived shift depth is strongly substrate-dependent. On black or very dark backgrounds, the cyan-to-violet travel reads at full intensity. On light or white substrates, the shift compresses significantly and the visual impact drops. This is not a product limitation — it is a fundamental property of interference pigments — but it is something to plan for when specifying a dark base coat or a black resin layer.

The pigment is odourless, insoluble in water, and not classified as hazardous under CLP or the relevant EU Directives. Heavy metal content is tightly controlled: lead and nickel both below 10 ppm, cadmium below 3 ppm, arsenic below 2 ppm — well within the limits demanded by most coatings and cosmetics specifications.

Technical Specifications

Chemical Composition

Heavy Metal Limits

Application Guide for Chameleon Resin Pigment Use

KT-90273 is compatible with most resin systems. In practice, the largest volume of requests we handle is for epoxy and UV resin applications — river tables, geode-style castings, custom phone cases, and decorative tile work where the angle-shifting cyan/violet reads strongly under directional light. That said, the KT-9000 series is equally at home in lacquer systems, industrial and plastic coatings, dispersion paints, powder coatings, leather coatings, and printing inks — including security printing where the angle-dependent color shift adds a functional anti-counterfeiting dimension.

For cosmetic applications, the INCI declaration (Mica, Titanium Dioxide, Silica) aligns with the ingredient listing requirements under EU Cosmetics Regulation (EC) No 1223/2009. Cosmetic-grade suitability, however, depends on the selected grade and intended use — confirm with our team for specific cosmetic or nail product applications.

Formulation & Dispersion in Resin Systems

The standard approach we recommend for resin art and casting work is straightforward: weigh out 1–10% pigment by weight relative to the resin batch, pre-wet the powder with a small aliquot of the resin component before introducing it to the full volume, then fold rather than agitate aggressively. Bubbles are a real concern with platelet-form pigments — the flat mica flakes will trap and highlight any air pockets that form near the surface, so slow, deliberate mixing matters more here than with conventional absorption pigments.

Loading rate influences the visual outcome in two ways. A lower loading (1–3%) in a translucent resin produces a more diffuse, depth-effect shift. Higher loadings (5–10%) increase perceived color saturation and the mirror-like quality of the surface but will increase viscosity and may affect substrate smoothness in thin-film applications. Finding the right balance depends on the specific resin system viscosity — something we typically work through with customers during sample evaluation.

• Apply a black or very dark base layer before casting clear resin over the pigment layer — this is the single most effective technique for maximising the cyan-to-violet color travel.
• In automotive and protective coating systems, finish with a clear topcoat to protect the platelet orientation and enhance optical depth.
• KT-90273 can be blended with transparent absorption pigments to modify the hue base and shift range — for example, introducing a small amount of a transparent blue to bias the cyan end of the shift.
• Avoid strong mechanical shear during dispersion; high-speed milling will fracture the mica platelets and reduce the angle-dependent effect.

Quality, Compliance & Color Shift Mica Powder Sourcing

At Kolortek, our quality management system operates under ISO 9001:2015 certification, covering production and sales of pigments and glitters. KT-90273 is produced and documented in compliance with REACH Regulation (EC) No. 1907/2006. The product is not classified as hazardous under CLP or the relevant EU Directives, and heavy metal content is held to the limits listed in the specifications above.

We supply supporting documentation — TDS, MSDS, and composition certificates — as standard. For buyers sourcing color shift mica powder for resin into regulated end markets (EU cosmetics, US personal care, automotive OEM supply chains), please specify the intended application when requesting samples so we can confirm grade suitability and provide the relevant documentation package.

Handling & Storage

KT-90273 is a fine inorganic powder; standard dust-handling precautions apply. Wear gloves, eye protection, and an approved dust mask when dispensing. Store in a sealed container in a well-ventilated area, away from moisture. For skin or eye contact, flush with clean water; for inhalation exposure, move to fresh air. No special hazard classification applies beyond standard powder handling.

Frequently Asked Questions

What resin types is KT-90273 chameleon mica compatible with?

KT-90273 is compatible with most resin systems, including epoxy, UV-cure resin, lacquer, and polyurethane-based coatings. It is also used in plastisols, powder coatings, leather coatings, and printing inks. The pigment is insoluble in water and inert in typical organic solvent systems, so it does not react with the resin matrix. For a specific system not listed, we can provide compatibility guidance on request.

What loading rate should I use for chameleon mica powder for resin casting?

For epoxy and UV resin applications, a loading range of 1–10% by weight is typical. Lower loadings (1–3%) produce a more translucent, depth-oriented effect; higher loadings (5–10%) give stronger color saturation and a more reflective surface. Pre-mixing the pigment with a small amount of resin before adding to the full batch ensures even distribution and avoids dry-powder agglomerates in the finished cast.

Why does the cyan/violet color shift look weak in my resin piece?

The most common cause is a light-coloured substrate or background. KT-90273's interference-based color shift requires a dark background to read at full intensity — ideally black. On white or translucent resin without a dark base layer, the shift compresses and the cyan/violet travel becomes much less visible. Adding a black base layer beneath the pigmented resin layer is the most reliable fix.

Is KT-90273 suitable for cosmetic or nail art use?

The KT-9000 series is used in high-end cosmetics and nail art applications, and the INCI declaration for KT-90273 — Mica, Titanium Dioxide, Silica — is consistent with EU Cosmetics Regulation (EC) No. 1223/2009 ingredient requirements. That said, final suitability for a specific cosmetic product depends on the grade selected and the intended use category. Contact our technical team with your application details for confirmation and supporting documentation.

Contact our technical team to discuss formulation requirements or to request a sample of KT-90273 for your specific application.