CAB-171-15 is a high molecular weight mixed cellulose ester with low butyrate content. It is typically used as a film forming resin in a solvent-based coatings.
CAB-171-15 offers the lowest butyrate content of all Eastman™ Cellulose Acetate Butyrates (CABs). Films made from CAB-171-15 are harder and tougher than films made with other mixed esters due to the low butyrate content and high molecular weight. Also, the low butyrate content of CAB-171-15 makes it less soluble and therefore it's films are more resistant to chemical attack. Coatings formulated with CAB-171-15 offer exceptional durability, chemical resistance, UV resistance, and will typically outperform coatings based on nitrocellulose. Additionally, the use of CAB-171-15 in coating applications improves flow and leveling allowing for coatings that have fewer surface defects and higher gloss.
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
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
Failure of nitrocellulose coatings when exposed to heat and UV
Damage to coatings caused by abrasion
Surface defects and poor leveling of solvent based coatings and lacquers
Solvent-Based Coatings; Automotive Coatings; Wood Coatings; Paper Coatings
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.
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