Product description
Eastman Cellulose Acetate Butyrate (CAB-531-1) is a cellulose ester with a higher butyryl level than Eastman CAB- 381 type esters.
Tough films with good resistance to marring and weathering are possible through combinations of cellulose acetate butyrate with thermoplastic acrylic resins.
Eastman CAB-531-1 and CAB-381 esters are similar in hydroxyl content and solubility characteristics, both being soluble in a wide range of solvents.
Eastman CAB-531-1 is a more flexible resin requiring lower plasticizer modification than the eastman CAB-381 esters.
EastmanCellulose esters are based on up to sixty percent cellulose, one of the most abundant natural renewable resources.
Ace machinery & equipment
Adhesives/sealants-b&c
Apparel
Architectural coatings
Auto oem
Auto plastics
Auto refinish
Automotive
Automotive parts & accessories
Automotive protective coatings
Coil coatings
Commerical printing inks
Compensation film
Consumer electronics
Consumer housewares-nfc
Device housings
Exterior architectural coatings
Flexographic printing inks
General industrial coatings
Graphic arts
Gravure printing inks
Industrial electronics
Leather coatings
Metal coatings
Metal furniture
Other-transportation
Pack & carton coatings
Paints & coatings
Protective coatings
Roofing
Safety glasses/shield
Small appliances non-food contact
Tac film
Truck/bus/rv
Wood coatings
| Property | Typical Value, Units |
| General | |
| Butyryl Content | 50 wt % |
| Acetyl Content | 2.8 wt % |
| Hydroxyl Content | 1.70% |
| Viscosityd | 5.6 poise |
| Colorb | 50 ppm |
| Hazeb | 15 ppm |
| Acidity as Acetic Acid | 0.02 wt % |
| Ash Content | 0.05% |
| Refractive Index | 1.475 |
| Heat Test @ 160°C for 8 hr | Tan melt |
| Melting Point | 135-150 °C |
| Glass Transition Temperature (Tg) | 115 °C |
| Specific Gravity | 1.17 |
| Wt/Vol (Cast Film) | 1.17 kg/L (9.75 lb/gal) |
| Bulk Density | |
| Poured | 480 kg/m3 (30 lb/ft3) |
| Tapped | 576 kg/m3 (36 lb/ft3) |
| Dielectric Strength | 787-984 kv/cm (2-2.5 kv/mil) |
| Molecular Weightc Mn | 40000 |
| Tukon Hardness | 15 Knoops |
b Determination of color and haze made on cab solutions using pt-co standard (color) and a monodisperse latex suspension (haze). Analysis performed with a gardner model xl-835 colorimeter.
c Polystyrene equivalent number average molecular weight determined by gel permeation chromatography.
d Viscosity 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).
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E-mail: wangxingqiang@ericwchem.com
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