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Technical Data Sheet
Eastman™ Cellulose Acetate Butyrate (CAB-381-0.5)


Chemical Synonym
  • Cellulose Acetate Butyrate
Applications
  • Aerosol coatings
  • Aerospace coatings
  • Apparel
  • Architectural coatings
  • Auto OEM
  • Auto plastics
  • Auto refinish
  • Automotive
  • Automotive parts & accessories
  • Automotive protective coatings
  • Coil coatings
  • Coil coatings-appliances
  • Commerical printing inks
  • Compensation film
  • Consumer electronics
  • Device housings
  • Exterior architectural coatings
  • Flexographic printing inks
  • General industrial coatings
  • Graphic arts
  • Gravure printing inks
  • Industrial electronics
  • Industrial maintenance
  • Inks
  • Leather coatings
  • Metal coatings
  • Metal furniture
  • Metals
  • Motorcycles
  • Pack & carton coatings
  • Packaging coatings non food contact
  • Packaging inks non food contact
  • Paints & coatings
  • Personal care ingredients
  • Photographic chemicals
  • Polymer modification
  • Process additives
  • Protective coatings
  • Shrink film non food contact
  • Small appliances non-food contact
  • Tools
  • Truck/bus/RV
  • Wood coatings

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

Eastman™ Cellulose Acetate Butyrate (CAB 381-0.5) is a cellulose ester with medium butyryl content and low viscosity. It was designed for use where low-application viscosities at relatively high solids levels is needed. It is soluble in a wide range of solvents and compatible with many other resins. It will also tolerate the use of solvent blends currently exempt from certain air pollution regulations. 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 Properties

PropertyTypical Value, Units
General
Butyryl Content37 wt %
Acetyl Content13 wt %
Hydroxyl Content1.5 %
Viscosityc1.9 poise
Colora150 ppm
Hazea35 ppm
Acidity 
     as Acetic Acid0.03 wt %
Ash Content<0.05 %
Refractive Index1.48
Heat Test 
     @ 160°C for 8 hrTan melt
Melting Point155-165 °C
Specific Gravity1.2
Wt/Vol 
     (Cast Film)1.2 kg/L (10.0 lb/gal)
Bulk Density 
     Poured352 kg/m3 (22 lb/ft3)
     Tapped465 kg/m3 (39 lb/ft3)
Dielectric Strength787-984 kv/cm (2-2.5 kv/mil)
Glass Transition Temperature (Tg)130 °C
Molecular Weightb 
     Mn30000
Tukon Hardness18 Knoops

aDetermination 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.
bPolystyrene equivalent number average molecular weight determined by gel permeation chromatography.
cViscosity 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.