CAB-551-0.01

CAB-551-0.01 is a low molecular weight cellulose acetate butyrate polymer. It is used as film former and resin modifier in solvent and UV curable coatings.
Product Overview
CAB-551-0.01 has the highest butyrate content and lowest molecular weight of the CAB series. The low molecular weight allows for high solids coatings to be formulated while maintaining a worakble viscosity. The butyrate content of CAB-551-0.01 lends to excellent flexibility as well as compatibility with a very wide range of solvents, resins and even monomers. It is soluble in common acrylic monomers and styrene and can therefore be used in 100% solid reactive coatings and inks. When used in UV curable inks and coatings, CAB-551-0.01 improves leveling, gloss, and hardness. It also helps to reduce the amount of shrinkage due to cross-linking and curing. CAB-551-0.01 can be used by pultruders to enable higher pultrusion speed and prevent internal/external cracking. When formulated into coatings CAB-551-0.01 improves UV stability, flow, leveling, pigment orientation and durability. CAB-551-0.01 can be blended with CAB-381 at a ratio of 1:8 and be used as a film forming polymer system in protective coatings for nail polish. When used in nail polish formulations as a film former, CAB-551-0.01 provides sag resistance and easy application in addition to UV resistance, gloss, and fast drying speeds. In addition, CAB-551-0.01 can be used as a additive in UV and LED curable nail polish to make removal of the gel coat easier. In an experiment to test this, Eastman found that a reduction of acetone soak removal time of over 10 minutes is achievable by adding 9% by weight CAB-551-0.01 to the formulation.
Product Specifications
Viscosity ASTM-A, sec: 0.01
Acetyl by GC, wt%: 4 Max
Butyryl by GC, wt%: 50-54
Free acidity, ppm: 300 Max
Moisture, wt%: 3.0 Max
Hydroxyl, wt%: 1.6 - 2.4
Primary Chemistry: Cellulose Acetate Butyrate
Features & Benefits
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
Problems Solved
Incompatibility of film forming resins in monomers used in UV curable coatings, inks, and adhesives.
Shrinkage of UV cured coatings and inks that leads to shrinkage and adhesion failure.
Difficulty removing UV curable nail polish.
Yellowing of nitrocellulose based nail coatings.
Applications
100% Solids Coatings; UV Curable inks & Coatings; Automotive Coatings; Nail Care