Technical Data Sheet
Eastman™ Cellulose Acetate Butyrate (CAB-531-1)
Ace machinery & equipment
Automotive parts & accessories
Automotive protective coatings
Commerical printing inks
Exterior architectural coatings
Flexographic printing inks
General industrial coatings
Gravure printing inks
Non-medical housings & hardware for elec
Pack & carton coatings
Paints & coatings
Small appliances non-food contact
Eastman Cellulose Acetate Butyrate (CAB-531-1) is a cellulose ester with a higher butyryl level than Eastman CAB-381 type esters. Tough films with good resistance to marring and weathering are possible through combinations of cellulose acetate butyrate with thermoplastic acrylic resins. Eastman CAB-531-1 and CAB-381 esters are similar in hydroxyl content and solubility characteristics, both being soluble in a wide range of solvents. Eastman CAB-531-1 is a more flexible resin that requires lower plasticizer modification than the Eastman CAB-381 esters. Eastman cellulose esters are based on up to sixty percent cellulose, one of the most abundant natural renewable resources.
Typical Value, Units
50 wt %
2.8 wt %
as Acetic Acid
0.02 wt %
@ 160°C for 8 hr
Glass Transition Temperature (T
1.17 kg/L (9.75 lb/gal)
787-984 kv/cm (2-2.5 kv/mil)
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 CAB solutions using Pt-Co standard (color) and a monodisperse latex suspension (haze). Analysis performed with a Gardner Model XL-835 colorimeter.
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.