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Eastman CAB-381-20
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Producer: 
Eastman
Eastman Cellulose Acetate Butyrate (CAB-381-20) is a cellulose ester with medium butyryl content and high ASTM(A) viscosity. Other than a higher viscosity and higher molecular weight, this cellulose ester shares the same general characteristics as CAB-381-0.1 and CAB-381-0.5. CAB-381-20 offers a combination of solubility and compatibility, moisture resistance, excellent surface hardness and good film strength. When CAB-381-20 is dissolved in appropriate solvents a clear, colorless solution is produced. CAB-381-20 is supplied as a dry, free-flowing powder.Eastman CAB-381-20 is based on cellulose, one of the most abundant natural renewable resources, from trees harvested from sustainably managed forests. The calculated approximate bio-content value of 41% for Eastman CAB-381-20 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 Eastman CAB-381-20, Food Contact.

Eastman CAB-381-20

Producer: 
Eastman
Eastman Cellulose Acetate Butyrate (CAB-381-20) is a cellulose ester with medium butyryl content and high ASTM(A) viscosity. Other than a higher viscosity and higher molecular weight, this cellulose ester shares the same general characteristics as CAB-381-0.1 and CAB-381-0.5. CAB-381-20 offers a combination of solubility and compatibility, moisture resistance, excellent surface hardness and good film strength. When CAB-381-20 is dissolved in appropriate solvents a clear, colorless solution is produced. CAB-381-20 is supplied as a dry, free-flowing powder.Eastman CAB-381-20 is based on cellulose, one of the most abundant natural renewable resources, from trees harvested from sustainably managed forests. The calculated approximate bio-content value of 41% for Eastman CAB-381-20 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 Eastman CAB-381-20, Food Contact.
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Features & Benefits

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Benefit Claims
Labeling Claims
HII Features
End Use Claims
Film forming

Applications & Uses

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Coating Type
Recommended Applications
  • Aerosol coatings
  • Aerospace coatings
  • Architectural coatings
  • Auto OEM
  • Auto plastics
  • Auto refinish
  • Automotive
  • Automotive parts & accessories
  • Building materials
  • Coil coatings
  • Coil coatings-appliances
  • Commerical printing inks
  • Compensation film
  • Consumer electronics
  • Cosmetic ingredients - nails
  • Exterior architectural coatings
  • Flexographic printing inks
  • General industrial coatings
  • Graphic arts
  • Gravure printing inks
  • Industrial electronics
  • Industrial maintenance
  • Leather coatings
  • Metal coatings
  • Motorcycles
  • Non-medical housings & hardware for elec
  • Nonwoven substrates
  • Other-transportation
  • Outdoor signs
  • Pack & carton coatings
  • Packaging inks non food contact
  • Paints & coatings
  • Photographic imaging film
  • Polymer modification
  • Process additives
  • Process solvents
  • Protective coatings
  • Rubber and plastic additives
  • Screen printing inks
  • Shelving solutions-retail
  • Small appliances non-food contact
  • Tools
  • Touch screen
  • Truck/bus/RV
  • Wood coatings
  • Wood furniture exterior
Recommended Uses
  • Aerosol coatings
  • Aerospace coatings
  • Architectural coatings
  • Auto oem
  • Auto plastics
  • Auto refinish
  • Automotive
  • Automotive parts & accessories
  • Building materials
  • Coil coatings
  • Coil coatings-appliances
  • Commerical printing inks
  • Compensation film
  • Consumer electronics
  • Cosmetic ingredients - nails
  • Exterior architectural coatings
  • Flexographic printing inks
  • General industrial coatings
  • Graphic arts
  • Gravure printing inks
  • Industrial electronics
  • Industrial maintenance
  • Leather coatings
  •  Metal coatings
  • Motorcycles
  • Non-medical housings & hardware for elec
  • Nonwoven substrates
  • Other-transportation
  • Outdoor signs
  • Pack & carton coatings
  • Packaging inks non food contact
  • Paints & coatings
  • Photographic imaging film
  • Polymer modification
  • Process additives
  • Process solvents
  • Protective coatings
  • Rubber and plastic additives
  • Screen printing inks
  • Shelving solutions-retail
  • Small appliances non-food contact
  • Tools
  • Touch screen
  • Truck/bus/rv
  • Wood coatings
  • Wood furniture exterior

Properties

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Compatible Substrates & Surfaces
Typical Properties
ValueUnitsTest Method / Conditions
Acetyl Content13.5wt %-
Acidity as Acetic Acidmax. 0.03wt %-
Ash Content0.05%-
Bulk Density Poured336 (21)kg/m3 (lb/ft3)-
Bulk Density Tapped432 (27)kg/m3 (lb/ft3)-
Butyryl Content37.0wt %-
Dielectric Strength787-984 (2-2.5)kv/cm (kv/mil)-
Glass Transition Temperature (Tg)141.0°C-
Heat Test at 160°C for 8 hrTan melt--
Hydroxyl Content1.8wt %-
Melting range195-205°C-
Moisture Contentmax. 3.0%-
Refractive Index1.475--
Specific Gravity1.2--
Tukon Hardness18.0Knoops-
Viscositya Poise76.0--
Viscositya s20.0--
Wt/Vol (Cast Film)1.2 (10.0)kg/L (lb/gal)-
Appearance
Free flowing powder
Specific Gravity
1.2
Refractive Index
1.475
Acidity
<0.03%wt
Viscosity
76 poise
Molecular Weight
70000
Glass Transition Temperature Tg
141°C
Melting Point
195-205°C

Documents (9)

Name
Type
Cellulose Acetate Butyrate - CAB-381-20 Sales Specifications Sheet
Other
Sustainability and biobased content of Eastman cellulose esters for formulated products
Brochure
Pigmentation of Eastman cellulose esters for use in printing inks
Brochure
Introduction: Eastman cellulose esters provide a uniform appearance to case acrylic sheets for bathtubs, show enclosures, and spas
Brochure
Introduction: Eastman cellulose esters for general industrial, industrial maintenance and marine coatings
Brochure