Eastman Cellulose Acetate Butyrate (CAB-381-20BP), 100% grade ester is a slight modification of the standard CAB-381-20 cellulose acetate butyrate and has a lower viscosity. The BP grade was designed primarily to meet the needs of European formulators. Eastman cellulose esters are based on up to sixty percent cellulose, one of the most abundant natural renewable resources.
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