KT-T60-22-WR Rainbow Violet XiallicSparks Pigment

What Makes the Al₂O₃ Substrate Different

Most effect pigments in the market use natural or synthetic mica as the flake substrate. The XiallicSparks series, including KT-T60-22-WR, is built on aluminum oxide — the same technology platform as Merck's Xirallic line. That difference in substrate drives everything downstream: the optical behavior, the surface uniformity, and the character of the sparkle itself.

Alumina flakes have a perfectly smooth surface, which allows very thin, uniform optical coatings to be applied during manufacture. Each flake behaves like a small mirror — reflecting light in a tight, specular cone rather than scattering it broadly. The result is a faceted crystal sparkle that reads as individual, distinct highlight points across the panel surface. Mica-based pigments scatter more light and produce a softer, more diffuse pearl glow. Neither is better in absolute terms; they serve different design intentions.

The refractive index difference matters here too. At 1.76, the alumina flake creates stronger interference contrast than mica at 1.58. In the Rainbow Violet effect, that translates to a higher-chroma violet with noticeably more brilliance at highlight angles. In our experience supporting automotive coating customers, this is the characteristic that makes XiallicSparks grades visually distinct from standard interference pigments — even to an untrained eye at normal viewing distance.

Technical Specifications

XiallicSparks Series — Rainbow Violet Crystal Pigment in Context

KT-T60-22-WR sits within the full XiallicSparks range. All grades share the 6–30 μm Al₂O₃ flake platform and the same crystal-effect optical character — color is the primary variable across the line. The table below shows the complete lineup with Xirallic cross-references where available.

If you are currently running Xirallic T60-22 in a formulation and need a direct drop-in, KT-T60-22-WR maps to that reference. Our cross-reference program is built specifically for that transition — matching particle size range and optical effect rather than just color name.

Automotive Violet Sparkle Pigment — Application and Use Cases

KT-T60-22-WR is engineered specifically for automotive OEM coatings — top-of-the-line metallic and crystal finishes where the visual specification calls for deep, saturated sparkle with high flop. It also performs in premium automotive refinish work, and we see it used in high-end industrial coatings for consumer electronics and luxury goods where an automotive-grade finish quality is the target.

One thing to note: this is not a general-purpose decorative pigment, and it is not for cosmetics. The XiallicSparks line is not face-safe certified, and the cost-performance profile is not suited to commodity decorative applications. For those use cases, our standard pearl pigment ranges — KT-100 through KT-9000 series — are the appropriate starting point.

The automotive violet sparkle pigment effect is also maximized through system design choices, not just pigment selection alone. A black or very dark basecoat underneath the effect layer is essential — the contrast between the opaque dark ground and the transparent, highly refractive alumina flakes is what creates the deep, three-dimensional sparkle appearance. A mid-grey or white basecoat will compromise the visual dramatically.

Formulation and Processing Guidelines

Dispersion

Pre-disperse KT-T60-22-WR in a small portion of the binder before letting it into the bulk formulation. A Cowles blade or equivalent high-speed disperser handles this well. The critical constraint is avoiding milling or high-shear equipment — alumina flakes fracture under excessive shear, and broken flakes produce a duller, less defined sparkle. Once the flake geometry is compromised, the optical performance cannot be recovered.

Loading and Application

Typical loading in automotive basecoats runs 3–8% on total paint weight. Within that range, higher loadings increase sparkle density but can reduce individual highlight definition if the flakes start to crowd each other. In our application lab, we generally recommend starting at 4–5% and adjusting based on the target visual specification.

Apply in multiple thin coats rather than a single heavy coat. This builds more uniform sparkle distribution and gives each flake the space to orient flat and parallel to the substrate — which is where the alumina flake's good orientation and flow characteristics become an advantage. Slow solvent flash and coating systems with good flow are preferable for that reason. Finish with a high-gloss clear coat to protect the pigment layer and enhance the crystal visual.

Curing

KT-T60-22-WR is heat stable through standard automotive bake schedules: 140–160°C for 20–30 minutes. No special modifications to a standard OEM or refinish cure cycle are required.

Xirallic Equivalent Positioning and Sourcing Considerations

Merck Xirallic has been the reference standard for alumina-based crystal-effect pigments in automotive coatings for many years. The XiallicSparks series is a factory-direct alternative built on the same Al₂O₃ substrate platform. Kolortek's direct pricing model typically delivers 20–40% cost savings versus Merck equivalents for comparable optical performance — a figure that matters when you are buying at automotive production volumes.

When replacing a Xirallic T60-22 reference with KT-T60-22-WR, the cross-reference is direct — same color effect, same 6–30 μm particle size range. That said, any pigment substitution in an approved automotive color formula requires your own color matching and system qualification process. We supply draw-down samples and technical documentation to support that process.

Quality and Documentation

Kolortek operates under ISO 9001:2015 certification covering the production and sale of pigments and related products. MSDS/SDS documentation ships with all orders; a technical data sheet is available for KT-T60-22-WR on request. For regulatory documentation packages — including compliance support for specific export markets — contact our technical team.

One clarification worth making: XiallicSparks grades are not positioned for cosmetic or personal care applications, and face-safe certification is not part of this product line's scope. If you are sourcing for a cosmetic application, the correct starting point is our cosmetic-grade pearl pigment ranges, not XiallicSparks.

Frequently Asked Questions

Is KT-T60-22-WR a direct replacement for Merck Xirallic T60-22?

Yes — KT-T60-22-WR is the XiallicSparks direct equivalent to Xirallic T60-22, sharing the same Al₂O₃ flake substrate, 6–30 μm particle size range, and Rainbow Violet crystal effect. Any actual formula substitution will still require color matching and system qualification on your side, which we support with samples and technical data. Factory-direct pricing typically runs 20–40% below Merck list prices.

What basecoat color should I use under KT-T60-22-WR for best results?

A black or very dark basecoat is the standard recommendation. The crystal sparkle effect depends on contrast between the opaque dark ground and the transparent, highly refractive alumina flakes. On a light or mid-tone basecoat, the violet sparkle reads as significantly less intense and loses much of its depth. This applies to all XiallicSparks grades, not just the Rainbow Violet.

Why does KT-T60-22-WR produce a sharper sparkle than mica-based violet pigments at the same particle size?

The difference comes down to substrate refractive index and surface smoothness. Aluminum oxide flakes have a refractive index of 1.76, compared to 1.58 for mica. The perfectly smooth alumina surface also allows thinner, more uniform optical coatings. Each flake behaves like a small mirror — producing tight, specular highlights rather than the broader diffuse glow characteristic of mica-based interference pigments. The result is a rainbow violet crystal pigment effect with visibly higher chroma and sparkle definition.

Can KT-T60-22-WR be used in cosmetics or nail products?

No. The XiallicSparks series is not face-safe certified and is not recommended for cosmetic, personal care, or nail applications. For those end uses, Kolortek offers separate cosmetic-grade effect pigment ranges. XiallicSparks grades are engineered exclusively for automotive OEM coatings, premium refinish, and high-end industrial coating applications.

Contact our technical team to discuss formulation requirements, request draw-down samples, or obtain a full regulatory documentation package for KT-T60-22-WR.