Blue Pigments for High Temperature Use

Global Leader in Technical Blue Pigments

Deqing Demi Pigment Technology Co., Ltd. provides high-performance blues for the world's most demanding thermal applications. From coloring catalytic converters to high-heat aerospace coatings, our Cobalt-based blues offer a level of stability that is unmatched. We understand that in high-temperature sectors, pigment failure can lead to structural issues; therefore, we ensure our blues are manufactured to the highest purity to guarantee both color and substrate performance.

High-Temp Blue Usage Areas

• Engine Coatings: High-heat blue for automotive and marine engines.
• Technical Ceramics: Coloring for spark plugs, insulators, and heat shields.
• Silicate Glass: Deep blue coloring for laboratory and decorative glassware.
• Refractory Markers: Heat-permanent blue coding for industrial furnace bricks.

High-Temp Blue Technical Specs

Performance Characteristics

• Absolute UV Permanence: Zero fading even in extreme solar or plasma exposure.
• Non-Migrating: Does not bleed into surrounding materials even at melting points.
• High Purity: Low heavy-metal leaching, suitable for high-end laboratory glass.
• Brilliant Chroma: Provides the "purest" blue available in the inorganic world.

• Q: Why is Cobalt Blue more expensive than others?

  A: Cobalt is a rare mineral, but its unique spinel structure provides the only blue that can survive temperatures above 1000∘C.

• Q: Is it safe for food-contact ceramics?

  A: Yes, once fired into a glaze, Cobalt Aluminate is extremely stable and meets global leaching safety standards (FDA/EU).

Custom Spectroscopic Matching

We offer "Hue-Tuning" by adjusting the Alumina-to-Cobalt ratio to achieve specific shades from "Sky Blue" to "Deep Royal Blue."

Technical Consulting: Our engineers can help you integrate high-temp blues into complex resin or glass systems, ensuring the pigment remains perfectly suspended during the cooling phase.

The Science of Cobalt Blue Saturation

In high-temp blues, we focus on the "Absorption Cross-section" of the Cobalt ion in the tetrahedral site of the spinel. We use CIELab data to maximize the negative "b*" value (blueness). Because this pigment is often used in thin films or transparent media, we monitor the "Hiding Power" and "Transparency Index." By controlling the crystal size, we ensure that the blue appears vivid and deep, even when viewed through thick layers of glass or clear polymer.