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

Applications

Auto OEM
Auto plastics
Auto refinish
Automotive
Automotive parts & accessories
Automotive protective coatings
Personal care ingredients
Shrink film non food contact
Small appliances non-food contact

Product Description

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. When CAB-381-0.5 is dissolved in appropriate solvents a clear, colorless solution is produced. 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 CAB-381-0.5 is based on cellulose, one of the most abundant natural renewable resources. The calculated approximate bio-content value of 40% for Eastman CAB-381-0.5 was determined by using six bio-based carbon atoms per anhyroglucose unit divided by the total number of carbons per anhyroglucose unit. Although the value reported is not specifically measured for bio-carbon, it can be estimated based on typical partition data.

For applications that require food contact compliance, please refer to CAB-381-0.5, Food Contact.

Typical Properties

Property	Typical Value, Units
General
Viscosity^a
s	0.5
Poise	1.9
Acetyl Content	13.5 wt %
Butyryl Content	38 wt %
Hydroxyl Content	1.5 wt %
Moisture Content	3.0 max %
Tg^b	130 °C
Bulk Density
Poured	352 kg/m³ (22 lb/ft³)
Tapped	465 kg/m³ (39 lb/ft³)
Specific Gravity	1.2
Acidity
as Acetic Acid	0.03 wt %
Ash Content	<0.05 %
Refractive Index	1.48
Dielectric Strength	787-984 kv/cm (2-2.5 kv/mil)
Tukon Hardness	18 Knoops
Wt/Vol
(Cast Film)	1.2 kg/L (10.0 lb/gal)
Heat Test
@ 160°C for 8 hr	Tan melt

^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).
^bGlass Transition Temperature

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.

12/5/2023 11:30:33 AM