Eastman Cellulose Acetate Butyrate (CAB-381-20) is a cellulose ester with high butyryl content and high ASTM(A) viscosity. Other than a higher viscosity and higher molecular weight, this cellulose ester shares the same general characteristics as CAB-381-0.1 and CAB-381-0.5. CAB-381-20 offers a combination of solubility and compatibility, moisture resistance, excellent surface hardness, and good film strength. CAB-381-20 is supplied as a dry, free-flowing powder. Eastman cellulose esters are based on up to sixty percent cellulose, one of the most abundant natural renewable resources.
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