Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Eastman CAB-381-20 Cellulose Acetate Butyrate

Eastman CAB-381-20 is an ultra - high viscosity modified resin in the cellulose acetate butyrate series, specially customized for high - performance automotive primer, clear coat and other systems. It has strong compatibility with various resins, can accelerate solvent release to shorten drying time, promote aluminum powder orientation to enhance metallic flash effect, inhibit intercoat bleeding and lifting, endow coatings with excellent flexibility

Features Of Eastman CAB-381-20 Cellulose Acetate Butyrate

  1. Ultra - High Viscosity & Adaptability - Suitable for automotive primer and clear coat, meeting the requirements of high - viscosity systems and improving coating texture and stability

  2. Drying Acceleration & Orientation Enhancement - Accelerate solvent volatilization to shorten touch - dry time, promote aluminum powder orientation and enhance metallic paint flash effect

  3. Broad Compatibility & Stability - Miscible with acrylic, amino and other resins, improving system stability and inhibiting intercoat bleeding and lifting

  4. Flexibility & Long - lasting Crack Resistance - Endow the paint film with excellent flexibility, yellowing resistance and cold crack resistance, ensuring long - term stable appearance of coatings for outdoor use

Typical Applications Of Eastman CAB-381-20 Cellulose Acetate Butyrate

  1. Automotive OEM/Refinish Primer - Promote primer shrinkage and aluminum powder orientation, and improve coating corrosion resistance and decorative performance

  2. Automotive Clear Coat Systems - Enhance adhesion and gloss, improve gloss retention, and meet the needs of cross - linking and fast drying

  3. High - end Metallic Coatings - Accelerate solvent release to shorten drying time, and enhance coating wear resistance and color stability

  4. Plastic Protective Coatings - Improve flexibility and cold crack resistance, suitable for coating plastic casings of electronics, home appliances, etc

Specifications Of Eastman CAB-381-20 Cellulose Acetate Butyrate

Product ModelCAB-381-20
BrandEastman
Chemical NameCellulose Acetate Butyrate (CAB)
AppearanceWhite free-flowing powder
Viscosity20 sec / 76 poise
Acetyl Content13.5%
Butyryl Content37%
Hydroxyl Content1.8%
Melting Range195–205°C
Glass Transition Temperature (Tg)141°C
Tukon Hardness (Knoop)18
Weight/Volume Ratio10 lb/gal (1.2 kg/L)
Molecular Weight (Average)70,000



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