Why dose Klarint selects Eastman CAB-551-0.2 as the CAB pigment chips' binder

Klarint CAB pigment chips is a pre-dispersed pigment preparation in a granular form. The selected organic and inorganic pigments are finely dispersed and wetted. This kind of CAB based pre-dispersed pigment preparation feature for high dispersion, high transparency, high gloss, and bright color, without smell or dust, and meanwhile maintain stable performance, safety, and environmental protection.

Beside the High performance pigment we selected, the chose of CAB Is very important too. In the market there are lots choice when selecting the Cellulose Acetate Butyrate, we chose the Eastman CAB-551-0.2 as one of the main binder, so Why dose Klarint selects Eastman CAB-551-0.2 as the CAB pigment chips' binder?

1. Optimal Resin Properties & Compatibility

Klarint utilizes Eastman CAB-551-0.2 because its unique chemistry directly addresses the core requirements of high-performance pigment chips. It is a cellulose ester with a high butyryl content (approximately 52%) and a relatively low molecular weight (viscosity of 0.2 sec) .

This specific composition provides:

• Exceptional Compatibility: It is compatible with numerous cross-linking resins, acrylic monomers, and other binders used in automotive, industrial, and UV-curable coatings .

• Superior Solubility: It dissolves rapidly in a wide variety of common organic solvents and monomers, which is essential for fast pigment chip dissolution .

2. Enabling the "Klarint Advantage

• The choice of CAB-551-0.2 is fundamental to Klarint's ability to replace traditional, time-consuming pigment grinding processes.

• Ultra-Fast Dissolution & Efficiency: The low viscosity of CAB-551-0.2 allows Klarint’s pigment chips to dissolve completely in a simple high-speed mixer in just 30–40 minutes, in stark contrast to the 8–12 hours required for traditional grinding methods . This drastically reduces production time and labor costs.

• Eliminates Heavy Equipment Investment: Because the chips dissolve readily, users no longer need to invest in costly sand mills or grinding lines. A simple mixing tank is sufficient, significantly lowering the capital barrier to entry .

• Superior Pre-Dispersion: The resin’s properties enable Klarint to pre-disperse pigment to a nano-scale particle size (D50 ≈ 200 nm), resulting in exceptional transparency, high gloss, and superior color development (ΔE < 0.5) that is difficult to achieve with conventional methods .

3. Final Coating Performance & Sustainability

• The properties of CAB-551-0.2 directly translate into superior performance for the final coating application.

• Enhanced Coating Quality: As a film former, it significantly improves flow and leveling, reduces surface defects like cratering, and provides excellent intercoat adhesion . It also aids in the orientation of metallic pigments, which is critical for automotive finishes .

• Excellent Durability: It provides outstanding UV stability, helping to prevent yellowing, and imparts flexibility and toughness to the final film .

• Process Cleanliness: In its chip form, it eliminates the dust associated with powder pigments, creating a safer and cleaner workplace while also reducing material waste .

• Sustainable Content: Furthermore, CAB-551-0.2 is derived from cellulose, a renewable resource, with a calculated bio-content value of 37% .

4. Conclusion

Klarint selects CAB-551-0.2 as the primary resin because it is the cornerstone of its innovative chip technology. Its unique combination of high compatibility, low viscosity, and excellent film-forming properties enables a revolutionary production process—one that is faster, cleaner, and more cost-effective than traditional grinding, while simultaneously delivering superior and durable coating performance.