详情
Eastman cellulose acetate butyrate CAB-321-0.1 is designed for use in automotive basecoats which are subsequently topcoated in typical basecoat/clearcoat automotive formulation systems.This cellulose ester is similar to CAB-381-0.1,but displays better resistance to attack and redissolve by solvents contained in typical clearcoats.Because of its redissolve resistance,CAB-321-0.1 may also be useful in wood sealers and plastic barrier coatings.
Table 1 |
Typical Propertiesa |
| Butyryl content,avg.wt% | 32.5 |
| Acetyl content,avg.wt% | 17.5 |
| Hydroxyl content,avg.wt% | 1.3 |
| Viscosity,secb | 0.1 |
| Viscosity,mp●s(cP)b | 38 |
| Color,ppmc | 20 |
| Haze,ppmc | 5 |
| Free acidity,as acetic acid,wt% max. | 0.03 |
| Moisture content,wt% max. | 3.0 |
| Refractive index | 1.475 |
| Melting range,oC | 165-175 |
| (oF) | (329-347) |
| Specific gravity | 1.20 |
| Weight/volume(cast film) |
|
| Kg/L | 1.20 |
| lb/gal | 10.0 |
| Dielectric strength |
|
| kV/mil | 2.0-2.5 |
| kV/cm | 787-984 |
| Glass transition temperature,oC(oF) | 127(260) |
aProperties reported here are typical of average lots.Eastman makes no representation that the material in any particular shipment will conform to the listed properties.
bViscosity determined by ASTM Method D 1343 in the solution described as Formula
A,ASTM Method D 817.
cDetermination of color and haze made on a solution of the cellulose ester dissolved in MIBK using PT-CO color standards and Johns-Manville Celite(diatomaceous silica product)haze standards.
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