Eastman Cellulose acetate butyrate CAB-551-0.01
| Property | Numerical value,unit |
| Butyryl content | 38% |
| Acetyl content | 13.5% |
| Hydroxyl group content | 1.30% |
| Viscosity | 2 seconds per 7.6 pokes |
| Colour | 125 ppm |
| Light fog | 35 ppm |
| Refractive index | 1.475 |
| Melting point | 171-184℃（340-363℉） |
| Specific gravity | 1.2 |
| Weight/volume ratio (cast film) | 1.2 kg/l(10 lb/gal) |
| casting | 352 kg/m3(22 lb /ft3) |
| Dielectric strength | 787-984 kv/cm |
| Glass transition temperature(TG) | 133-271℃ |
| Molecular weight Mnf | 20000 |
1.The addition of CAB to metal coating can accelerate the release of solvent from the film and shorten the drying time.
2.CAB as a leveling agent, can improve the leveling, eliminate paint film shrinkage;
3. CAB as a leveling agent, can improve the leveling, eliminate paint film shrinkage;
4.The addition of CAB in automotive primer can help to better promote the shrinkage of primer and the directional arrangement of aluminum powder when the solvent volatilizes;
5.It can shorten the drying time, improve the resistance to cold cracking, and has good polishing performance.
6.When CAB is added to varnish, it can strengthen adhesion, gloss and light retention, so that the system has crosslinking characteristics and drying speed.
