CAB-381-20 BP is high molecular weight cellulose acetate butyrate (CAB) polymer. It is designed to have a lower solution viscosity and is an ideal film former for high solids solvent-based coatings.
CAB-381-20 BP is a mixed cellulose ester with moderate butyrate content. It is designed to have a lower solution viscosity than standard CAB-381-20 making it especially useful in coating applications that require a higher solids content. Coatings made with CAB-381-20BP have excellent UV resistance, ideal pigment orientation, high gloss, and are remarkably durable. CAB-381-20BP can also be used as an additive to decrease surface defects in a coating by improving the flow and leveling. It is also commonly used as replacement for nitrocellulose in wood coatings and nail polish due to the superior UV stability and safety.
Viscosity ASTM-A, sec: 12 -20
Acetyl by GC, wt%: 14 - 17
Butyryl by GC, wt%: 33.0 -38.0
Free acidity, ppm: 300 Max
Moisture, wt%: 3.0 Max
Hydroxyl, wt%: 0.5 - 1.2
Primary Chemistry: Cellulose Acetate Butyrate
Improve flow and leveling
Reduce cratering
Reduce dry time
Provide polishability
Improve sprayability
Pigment dispersion medium
Metallic pigment control
Redissolve resistance
Sag resistance
Enhanced color uniformity
Decreased sand scratch telegraphing
Intercoat adhesion
Compliant with European standards
Automotive Coatings; Textile Coatings; Lacquers; Nail Polish; Wood Coatings
Eastman Solus™ performance additives are the newest cellulose esters designed for high-solids solvent-borne systems. Solus™ is specifically engineered to meet lower VOC target while improving performance in clear, pigmented and metallic automotive coatings.
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