Why Klarint Selects Eastman CAB-381-0.5？

In the world of high-performance pigment chips, the carrier resin is not merely a binder—it is the foundation upon which color brilliance, application efficiency, and final coating performance are built. At Klarint, our commitment to excellence drives every material decision, and nowhere is this more evident than in our strategic choice of Eastman CAB-381-0.5 as the preferred cellulose acetate butyrate (CAB) resin for our premium pigment chip line.

The Science Behind the Selection

Eastman CAB-381-0.5 is a cellulose ester with medium butyryl content (approximately 38%) and exceptionally low viscosity (0.5 seconds) , specifically engineered for applications demanding low application viscosities at relatively high solids levels . This unique combination of properties directly translates to tangible advantages in pigment chip manufacturing and end-use performance.

Uncompromising Pigment Dispersion

Klarint's CAB pigment chips—including transparent iron yellow (SIC-S2215) and transparent red 179 (SIC-S4179B)—are manufactured by finely dispersing and wetting high-performance pigments within Eastman CAB-381-0.5 . The resin's excellent pigment wetting characteristics ensure that pigment particles are uniformly encapsulated at a near-nano scale, delivering:

• Superior transparency and color strength for depth and brilliance

• Narrow particle size distribution ensuring batch-to-batch consistency

• High gloss and distinctness of image (DOI) critical for automotive and 3C coatings

Unlocking Formulation Efficiency

The low viscosity of CAB-381-0.5 enables Klarint to produce pigment chips with high pigment loadings—up to 50% for organic pigments—without compromising flow properties . When dissolved, these chips rapidly form clear, colorless solutions within 30–40 minutes using only a high-speed mixer . This eliminates the need for:

• Costly grinding equipment and dedicated production lines

• Extended processing times (traditional grinding requires 8–12 hours)

• Significant capital investment and operational costs

Performance Across Industries

Klarint CAB pigment chips, powered by Eastman CAB-381-0.5, deliver measurable advantages across the most demanding applications:

Automotive OEM & Refinish Paints:
The resin's rapid solvent release accelerates flash-off time, shortens dry-to-touch time, and promotes optimal metallic flake orientation for stunning effect finishes . It also improves anti-cold cracking resistance and provides excellent polishability—critical for refinish efficiency .

3C Electronics & Industrial Coatings:
CAB-381-0.5 enhances abrasion resistance, color stability, and toughness in plastic coatings . Its superior flow and leveling properties eliminate surface defects like pinholes and cratering, ensuring flawless finishes on premium devices .

Wood Coatings & Printing Inks:
The resin delivers exceptional non-yellowing properties and excellent adhesion, while improving drying speed and resolubility for press stability .

Sustainability and Regulatory Compliance

Beyond performance, Eastman CAB-381-0.5 is based on cellulose—one of the most abundant natural renewable resources—with an approximate bio-content value of 40% . This aligns with Klarint's commitment to sustainable manufacturing. Furthermore, the product is available in a food contact compliant grade, adhering to FDA, EU, and Swiss regulations for applications requiring this certification .

The Klarint Advantage

By selecting Eastman CAB-381-0.5 as the foundation of our CAB pigment chip line, Klarint delivers:

• Superior color performance through nano-scale pigment dispersion

• Unmatched production efficiency by eliminating grinding operations

• Enhanced workplace safety with dust-free, low-odor granular form

• Reliable quality with extended shelf life (up to 18 months) and color consistency (ΔE < 1.0)

Conclusion

The choice of Eastman CAB-381-0.5 is not a coincidence—it is a deliberate decision rooted in scientific rigor and application expertise. For Klarint, this resin is the cornerstone of a product line that consistently meets the exacting demands of automotive, 3C electronics, wood coatings, and specialty printing applications.

Experience the Klarint difference—where the precision of Eastman CAB-381-0.5 meets the art of color science.