Technical Data Sheet
Eastman™ Cellulose Acetate Butyrate (CAB-381-2 BP)
Commerical printing inks
Gravure printing inks
Remarkable polymers with a renewable backbone provided by nature itself.
Eastman™ Cellulose Acetate Butyrate BP (CAB-381-2BP) grade ester is a slight modification of the standard CAB-381-2 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.
Typical Value, Units
36 wt %
14.5 wt %
as Acetic Acid
<0.03 wt %
<3 wt %
@ 160°C for 8 hr
1.2 kg/L (10.0 lb/gal)
787-984 kv/cm (2-2.5 kv/mil)
Glass Transition Temperature (T
Determination of color and haze is made on CAB solution using Pt-Co color standards (color) and a monodisperse latex suspension (haze). Analysis is performed with a Gardner Model XL-835 colorimeter.
Polystyrene equivalent number average molecular weight determined by gel permeation chromatography.
Viscosity determined by ASTM Method D 1343. Results converted to poises (ASTM Method D 1343) using the solution density for Formula A as stated in ASTM Method D 817 (20% Cellulose ester, 72% acetone, 8% ethyl alcohol).
Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.
Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.