Technical Data Sheet
Eastman™ Cellulose Acetate Butyrate (CAB-381-2)
Cellulose Acetate Butyrate
Ace machinery & equipment
Automotive parts & accessories
Automotive protective coatings
Commerical printing inks
Exterior architectural coatings
General industrial coatings
Gravure printing inks
Inkjet printing inks
Pack & carton coatings
Packaging inks food contact
Paints & coatings
Personal care ingredients
Small appliances non-food contact
Water treatment industrial
Remarkable polymers with a renewable backbone provided by nature itself.
Eastman™ CAB-381-2 is a cellulose ester with high butyryl content and high ASTM(A) viscosity. Other than a higher viscosity and molecular weight, this cellulose ester shares the same general characteristics as CAB-381-0.1 and CAB-381-0.5. CAB-381-2 offers a combination of solubility and compatibility, moisture resistance, excellent surface hardness, and good film strength. It 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.
Typical Value, Units
38 wt %
13.5 wt %
as Acetic Acid
<0.03 wt % max.
@ 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 made on a solution of the cellulose ester dissolved in MIBK using Pt-Co color standards and Johns-Manville Celite (diatomaceous silica products) haze standards.
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.