CAB-321-0.1

CAB-321-0.1 is a low molecular weight mixed cellulose ester with moderate butyrate content. It is used as a film former, resin modifier, and additive in solvent-based coatings.
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Product Overview
CAB-321-0.1 is a cellulose acetate butyrate (CAB) with a moderate butyrate content and low molecular weight which in turn lends to low solution viscosity. CAB-321-0.1 has better solvent compatibility than lower butyrate CABs providing formulators with more solvent options, and films formed with CAB-321-0.1 will also have better flexibility than films formed with cellulose acetate or lower butyrate content CABs. Coatings containing CAB-321-0.1 have excellent flow and leveling leading to fewer surface defects and higher gloss. Additionally, CAB-321-0.1 has superior UV stability and heat resistance when compared to nitrocellulose making CAB-321-0.1 an idea resin for challenging coating applications.
Product Specifications
Viscosity ASTM-A, sec: 14 - 24
Acetyl by GC, wt%: 28 - 31
Butyryl by GC, wt%: 16.5 - 19
Free acidity, ppm: 300 Max
Moisture, wt%: 3.0 Max
Hydroxyl, wt%: 0.8 - 1.4
Primary Chemistry: Cellulose Acetate Butyrate
Features & Benefits
Film toughness
Heat resistance
Improves flow and leveling
Reduces cratering
Reduces dry time
Provides polishability
Improves sprayability
Pigment dispersion medium
Metallic pigment control
Redissolve resistance
Sag resistance
Enhanced color uniformity
Decreased sand scratch telegraphing
Intercoat adhesion
Problems Solved
High viscosity of high solids coatings and inks
Brittle nature of high solids coatings and inks
VOC concerns regarding solvent based formulation with a low solids content
Applications
Automotive Coatings; Paper Coatings; Nail Polish; Wood Coatings; Plastic Coatings; Acrylic Coatings