CAB-551-0.2 is a cellulose acetate butyrate (CAB) resin with excellent compatibility. It is a leveling aid used in solvent based and UV coatings and inks.
CAB-551-0.2 is mixed cellulose ester with a very high butyrate content and relatively low molecular weight. It can be used as a film former and additive in coatings and inks to improve pigment orientation, gloss, wetting, leveling, and durability. The high butyrate content of CAB-551-0.2 lends to improved flexibility of coatings and makes it widely soluble in solvents and even monomers .It is soluble in common acrylic monomers and compatible with many UV curable resins and can therefore be used in reactive and UV curable formulations. When formulated into UV curable coatings CAB-551-0.2 helps to prevent shrinkage of the coating or ink due to cross linking that occurs during rapid curing. CAB-551-0.2 can be used by pultruders to enable higher pultrusion speed and prevent internal/external cracking. It is also commonly used as a replacement for nitrocellulose in nail care applications because of it's favorable safety profile and UV stability. When CAB-551-0.2 is used in nail polish and protective nail coatings as a film former it provides excellent sag resistance, gloss, light resistance, and fast drying speeds.
Viscosity ASTM-A, sec: 0.16 - 0.25
Acetyl by GC, wt%: 4 Max
Butyryl by GC, wt%: 49.0
Free acidity, ppm: 300 Max
Moisture, wt%: 3.0 Max
Hydroxyl, wt%: 1.4 - 2.4
Primary Chemistry: Cellulose Acetate Butyrate
Improve flow and leveling
Reduce cratering
Reduce dry time
Provide polishability
Improve sprayability
Pigment dispersion medium
Metallic pigment control
Redissolve resistance
Sag resistance
Enhanced color uniformity
Decreased sand scratch telegraphing
Intercoat adhesion
Improve pultrusion speed
Prevent pultrusion cracking
Soluble in alcohol
Cracking of pultruded plastic parts
Surface defects of UV curable formulations caused by poor leveling and shrinkage upon cure
Yellowing of nail polish caused by exposure to UV and heat
Automotive Coatings; Plastic Coatings; UV curable coatings; UV Curable inks; Reactive Coatings; Nail Care
Cellulose Esters enhance appearance, performance and protection capabilities of wood coatings and finishes. They are used as co-resin or additive to provide benefits to 2K PU/acrylics, acid-cured and UV-cured formulations.
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.
Eastman CAB enhances efficiencies and reduces waste through fewer rejects and reduced need for re-coating while substantially improving finished outcomes.
Cellulose ester can be formulated into inks as the main film former, co-resin, or additive to improve appearance, performance, and productivity.
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