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Technical Data Sheet
Eastman™ Cellulose Acetate Butyrate (CAB-551-0.2)


Chemical Synonym
  • Cellulose Acetate Butyrate
Applications
  • Ace machinery & equipment
  • Adhesives/sealants-B&C
  • Aerospace coatings
  • Alkyd resins
  • Apparel
  • Architectural coatings
  • Auto OEM
  • Auto plastics
  • Auto refinish
  • Automotive
  • Automotive parts & accessories
  • Automotive protective coatings
  • Can coating internal
  • Can coatings external coating
  • Coil coatings
  • Coil coatings-appliances
  • Commerical printing inks
  • Compensation film
  • Consumer electronics
  • Device housings
  • Diapers
  • Electronic chemicals
  • Exterior architectural coatings
  • Flexographic printing inks
  • General industrial coatings
  • Graphic arts
  • Gravure printing inks
  • Industrial electronics
  • Industrial maintenance
  • Inkjet printing 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 imaging film
  • Process additives
  • Protective coatings
  • Small appliances non-food contact
  • Truck/bus/RV
  • Water treatment industrial
  • Wood coatings

Product Description
Eastman Cellulose Acetate Butyrate (CAB-551-0.2) is a cellulose ester with high butyryl content and relatively low molecular weight. It is compatible with numerous cross-linking resins and has a lower solution viscosity. In coatings, Eastman CAB-551-0.2 gives clear films, reduces surface tack and mottling, minimizes cratering, improves flow and thermal reflow, and provides inter coat adhesion and good UV stability. It is useful for durable cross-linked formulations. Its good compatibility with a wide range of curing resin systems and its solubility in a wide variety of solvents and solvent combinations make it useful as an additive in numerous coating compositions. 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 Content52 wt %
Acetyl Content2 wt %
Hydroxyl Content1.8 %
Viscosityc0.76 poise
Colora50 ppm
Hazea15 ppm
Acidity 
     as Acetic Acid0.02 wt %
Ash Content<0.05 %
Refractive Index1.475
Melting Point130-140 °C
Glass Transition Temperature (Tg)101 °C
Specific Gravity1.16
Wt/Vol1.16 kg/L (9.67 lb/gal)
Bulk Density 
     Poured515 kg/m3 (32 lb/ft3)
     Tapped612 kg/m3 (38 lb/ft3)
Dielectric Strength787-984 kv/cm (2-2.5 kv/mil)
Molecular Weightb 
     Mn30000
Tukon Hardness15 Knoops

aDetermination of color and haze made on a solution of CAB-551-0.2 dissolved in a Rule 66 exempt blend of lacquer solvents, using Pt-Co color standards and a monodisperse polystyrene latex suspension haze standard.
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.