Eastman™ Cellulose Acetate Butyrate (CAB-171-15)

Application/Uses

- Coatings
- Coatings for Automotive Plastics
- Coatings for cloth
- Coatings for leather
- Coatings for paper/paperboard
- Coatings for plastic
- Coatings for wood
- Truck/Bus/Commercial Vehicles

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

Property	Typical Value, Units
Butyryl Content	17 wt %
Hydroxyl Content	1.5%
Viscosity	57.37 poise
Color	225 ppm
Haze	55 ppm
Fiber	325
Acidityas Acetic Acid	0.0325 wt %
Ash Content	0.05%
Refractive Index	1.475
Melting Point	230-240°C
Specific Gravity	1.26
Wt/Vol	1.26 kg/L (10.5 lb/gal)
Bulk Density Poured Tapped	224 kg/m3(14 lb/ft3) 256 kg/m3(16 lb/ft3)
Dielectric Strength	784-984 kv/cm (2-2.5 kv/mil)
Glass Transition Temperature(Tg)	161°C
Tukon Hardness	27 Knoops
Acetyl Content	29.5 wt %

aViscosity 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).
bDetermination 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.

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