PB28 Cobalt Blue Pigment for High-Temperature Plastics, Coatings, and Ceramic Inks-Hunan Kela Materials Co. LTD

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Home / Applications / Pigments / pigment blue 28

pigment blue 28

PB28 Cobalt Blue Pigment is a high-performance inorganic blue pigment based on cobalt aluminate spinel structure. It is widely used in high-temperature plastics, industrial coatings, ceramics, glass, and ceramic ink applications requiring thermal and chemical stability.

Kela Transparent Cobalt Blue Pigment – High-End Cobalt Aluminate (CoAl₂O₄, PB28)

Kela New Materials specializes in Transparent sub-micron Cobalt Blue—a high-purity cobalt aluminate spinel (CoAl₂O₄, PB28) engineered for advanced industries where conventional cobalt blue pigments cannot meet performance requirements. With true sub-micron-scale particle control, exceptional thermal stability, and a clean, vivid cobalt-blue tone, our transparent cobalt blue delivers superior optical, thermal, and chemical performance across cutting-edge applications. At the heart of our material is an inverse spinel crystal structure that ensures: • Transparent or semi-transparent blue color in inks, coatings, ceramics, and glass • Exceptional heat resistance (up to 1000–1300°C) • High UV and weathering stability • Low ionic migration and ultra-low impurities • Excellent dispersion in polymers, inks, and ceramic matrices • Environmentally safe, non-toxic, non-leaching composition

PB28 Cobalt Blue Pigment — High-temperature inorganic blue pigment

Short answer: PB28 Cobalt Blue is an inorganic blue pigment based on a cobalt aluminate spinel structure. It is used where stable blue coloration is required under high processing temperatures and harsh environments. It fits plastics, coatings, ceramics, and glass systems. Its color performance depends on crystal integrity and dispersion quality, and it is not an organic dye or carbon-based colorant.

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