Product Description
Product name: Cellulose Acetate Butyrate CAB (CAB-381-20)
CAS RN.: 9004-36-8
EC No.: 618-381-2
Molecular Formula: C4H8O2XC2H4O2X
Appearance: Transparent or Opaque pellets.
Equivalent Code: Eastman cellulose acetate butyrate (CAB-381-20)
What is CAB 381-20?
iSuoChem® Cellulose Acetate Butyrate (CAB 381-20) is a cellulose ester with high butyryl content and extremely high viscosity.
In addition to its high viscosity and molecular weight, CAB-381-20 also combines the excellent properties of CAB-381-0.1, CAB-381-0.5, and CAB-381-2. Plus, it shows good results in solubility, compatibility, water resistance, surface hardness, and surface strength. CAB 381-20 comes in a free-flowing powder form for easy use and processing.
CAB 381-20 Properties in TDS
| Property of CAB resin | Enterprise standard | Typical Value, Units |
| Butyryl Content | 36%~40% | 37WT% |
| Acetyl Content | 11%~15% | 13.5WT% |
| Viscosity | 1.37~1.80 mPa.s/mm | 1.5 Poise |
| Ahydroxyl Content | 0.00~3.00% | 1.8% |
| Color | ＜＝100unit | 69 |
| Acidity as Acetic Acid | 0.00~300 mg/kg | 58 |
| Ash Content | ＜＝3% | ＜0.05% |
| Melting point | Measured Value | 195-205℃ |
| Molecular Weight Mn | Measured Value | 70000 |
| Haze | ＜＝100NTU | 92 |
Remark: 1. Color and haze measurement solution: 20% CAB, 80% Ethyl acetate or acetone (see the picture below).
2. Color was measured using the Pt-Co colorimetric scale, and haze was measured using a turbidometer.
Remark: CAB resin after dissolution (20% CAB, 80% Ethyl acetate)
Left: Eastman® CAB-381-0.5
Right: iSuoChem® CAB-381-0.5
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