KT-90520 Chameleon Mica Red/Orange for resin art

What KT-90520 Does — and Why the Substrate Matters

The KT-9000 series operates on thin-film interference. As viewing angle changes, the optical path length through each coating layer shifts, producing a distinct color at each angle. KT-90520 expresses that shift across the red-to-orange range — a warm, high-chroma travel that reads clearly in direct light and across oblique viewing angles.

One thing we consistently tell formulators: substrate lightness is not a minor variable — it controls the entire perceived effect. On a white or pale background, the transmitted and reflected light mix, washing out the interference color. On a black or very dark base, the interference layers have nothing competing with them, and the red-to-orange travel becomes the dominant visual signal. In resin art, that typically means casting a black resin base layer first, or incorporating a black pigment directly into the lower pour.

The natural mica substrate contributes a baseline luster. The silica overcoat — 37–42% of total composition — serves as a stabilizing layer over the iron oxide chromophore, contributing to the chemical and mechanical durability the series is known for.

Technical Specifications

Chemical Composition

Formulation Guide: Using Chameleon Mica Flakes in Resin Art

The KT-9000 series — including KT-90520 — is one of the grades we see most often in resin art contexts, alongside nail art and automotive custom finishes. The particle size range of 20–80 μm gives the flakes enough surface area to produce a strong interference response without creating the settlement issues that heavier specialty pigments can introduce in low-viscosity resin systems.

A few practical points for resin art applications:

• Dosage: 1–10% by weight. Start at the lower end for translucent, depth-effect pours; push toward 10% for full-coverage color-shift fills. Higher loading increases the perceived shift intensity but can affect surface smoothness at the top of a pour.
• Pre-mixing: Disperse the powder into a small amount of resin first — typically the Part A component — before combining with the full batch. This distributes the flakes evenly and avoids dry clumping.
• Mix speed: Keep mixing slow and deliberate. Turbulent mixing introduces micro-bubbles that become visible alongside the flakes, which is particularly noticeable with high-luster interference pigments.
• Background layer: Cast a black or dark resin base before the chameleon pour. The color-shift effect is only fully visible against a dark substrate; a pale or white base will suppress most of the goniochromatic travel.
• Layering: KT-90520 can be combined with transparent absorption pigments to modify the base hue and extend the perceived shift range.

The pigment is water-insoluble, which is relevant if you are working with water-based or hybrid resin systems — it will not dissolve into the matrix, so orientation of the flakes at the surface determines the final visual result.

Application Range Beyond Resin Art

While resin art is the primary application context for this listing, the KT-9000 series has broader industrial reach. From our experience supporting customers across multiple segments, the same interference technology in KT-90520 maps across to:

• Automotive custom finishes and wraps — where the angle-dependent shift is visible across changing viewing angles on curved panels
• Nail art formulations — a category where the KT-9000 series sees significant uptake due to the vivid, visible shift at close viewing distances
• Luxury packaging and decorative printing
• Decorative coatings for motorcycle helmets and sporting goods
• Security and anti-counterfeiting printing, where goniochromatic effects are difficult to reproduce by standard printing methods

Loading rates, dispersion methods, and topcoat requirements vary by application. The 1–10% guidance above is specific to resin art; contact our team for formulation support in other systems.

Heavy Metal Limits

KT-90520 is manufactured to strict heavy metal limits, as detailed below.

Quality, Compliance, and Safe Handling

KT-90520 is not classified as hazardous under CLP Regulation (EC) No. 1272/2008, nor under Directive 67/548/EEC and Directive 1999/45/EC. An MSDS/SDS is provided with all shipments.

Kolortek holds ISO 9001:2015 certification covering the production and sales of glitters, pigments, and fillers. For applications requiring specific regulatory documentation — REACH, EU Cosmetics Regulation (EC) No. 1223/2009 compliance, or US FDA framework alignment — product-specific confirmation is required, as these apply selectively by grade. Cosmetic-grade suitability for KT-90520 specifically is not confirmed in our current published data; contact us directly if skin-contact compliance is a formulation requirement.

When handling the powder, standard precautions apply: avoid generating and breathing dust, use adequate ventilation, and wear gloves plus eye protection. A dust mask covering nose and mouth is recommended if dust is generated during weighing or transfer.

Frequently Asked Questions

What is the recommended loading rate for KT-90520 chameleon mica powder in epoxy resin?

For resin art, we recommend 1–10% by weight. Lower loadings (1–3%) produce a translucent, depth-effect result; higher loadings (7–10%) deliver a fuller color-shift coverage. Pre-disperse the powder in a small portion of resin before adding it to the full batch to ensure even distribution and avoid dry clumping.

Why does the color-shifting effect look weak in my resin pour?

The most common cause is a light or white substrate. KT-90520, like all grades in the KT-9000 Chameleon Series, requires a dark background for the goniochromatic shift to read clearly. Cast or paint a black base layer before your chameleon pour. Pale substrates scatter and mix reflected light, which suppresses the interference color shift entirely.

What is the particle size of KT-90520, and does it affect surface finish?

KT-90520 has a particle size range of 20–80 μm with a D50 of 25–35 μm. In resin systems, higher pigment loading can affect surface smoothness at the top of a pour. If surface texture is a concern, stay toward the lower end of the dosage range or apply a clear topcoat to level and protect the finished surface.

Can KT-90520 color changing mica powder be used in applications beyond resin art?

Yes. The KT-9000 Magic Chameleon Series is used in automotive custom finishes and wraps, nail art, luxury packaging, decorative coatings for helmets and sporting goods, and security printing. The multi-layer mica substrate is compatible with most resin systems and a range of coating formulations. Loading rates and processing parameters differ by application — reach out to our team for application-specific guidance.

Contact our technical team to discuss formulation requirements for your specific application.