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Technical Data Sheet
Eastman™ Cellulose Acetate Butyrate (CAB-171-15)


Applications
  • Ace machinery & equipment
  • Aerospace coatings
  • Architectural coatings
  • Auto OEM
  • Auto plastics
  • Auto refinish
  • Automotive protective coatings
  • Coil coatings
  • Compensation film
  • Device housings
  • Flexographic printing inks
  • General industrial coatings
  • Graphic arts
  • Industrial maintenance
  • Inkjet printing inks
  • Leather coatings
  • Metal coatings
  • Pack & carton coatings
  • Packaging coatings non food contact
  • Paints & coatings
  • Paper coatings non-food grade
  • Photographic imaging film
  • Polymer modification
  • Process additives
  • Protective coatings
  • Strapping
  • Tac film
  • Truck/bus/RV
  • Water treatment industrial
  • Wood coatings

Product Description
Remarkable polymers with a renewable backbone provided by nature itself.

When cellulose is esterified with both acetyl and butyryl radicals to form the mixed ester, cellulose acetate butyrate, many of the desirable properties of both esters are obtained. CAB 171-15 has the lowest butyryl content in the series of Eastman™ Cellulose Acetate Butyrates. It is supplied in dry, powder form and is offered as a filtered product. Films prepared from CAB 171-15 offer superior toughness and hardness as compared with films prepared from other mixed esters. Also coatings based on CAB 171-15, which has less solubility and compatibility than the higher butyryl CABs, usually offer excellent resistance to chemicals, oils, and greases. CAB 171-15 exhibits the lowest degree of solubility of the Eastman™ cellulose ester family. It is soluble in low molecular weight ketones, chlorinated hydrocarbons, and nitroparaffins. Eastman™ cellulose esters are based on up to sixty percent cellulose, one of the most abundant natural renewable resources.


Typical Properties

PropertyTypical Value, Units
General
Butyryl Content17 wt %
Hydroxyl Content1.5 %
Viscosityb57.37 poise
Colora225 ppm
Hazea55 ppm
Fiber325
Acidity 
     as Acetic Acid0.0325 wt %
Ash Content0.05 %
Refractive Index1.475
Melting Point230-240 °C
Specific Gravity1.26
Wt/Vol1.26 kg/L (10.5 lb/gal)
Bulk Density 
     Poured224 kg/m3 (14 lb/ft3)
     Tapped256 kg/m3 (16 lb/ft3)
Dielectric Strength784-984 kv/cm (2-2.5 kv/mil)
Glass Transition Temperature (Tg)161 °C
Tukon Hardness27 Knoops
Acetyl Content29.5 wt %

aDetermination of color and haze is made on CAB solutions using Pt-Co standards for color and a monodisperse latex suspension for haze. Analysis is performed with a Gardner Model XL-835 colorimeter.
bViscosity 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).



Comments
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.