Technical Data Sheet
Eastman™ Cellulose Acetate Butyrate (CAB-381-20)
Cellulose Acetate Butyrate
Automotive parts & accessories
Commerical printing inks
Cosmetic ingredients - nails
Exterior architectural coatings
Flexographic printing inks
General industrial coatings
Gravure printing inks
Non-medical housings & hardware for elec
Pack & carton coatings
Packaging inks non food contact
Paints & coatings
Photographic imaging film
Rubber and plastic additives
Small appliances non-food contact
Wood furniture exterior
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.
Typical Value, Units
37 wt %
13.5 wt %
as Acetic Acid
<0.03 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
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).
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.
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.