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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.
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.
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
Eastman Solus™ performance additives are the newest cellulose esters designed for high-solids solvent-borne systems. Solus™ is specifically engineered to meet lower VOC target while improving performance in clear, pigmented and metallic automotive coatings.
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