CAP-504-0.2 is a cellulose acetate propionate (CAP) with high hydroxyl functionality. It is commonly used as a film former in printing inks and nail polish.
Product Overview
CAP-504-0.2 is a mixed cellulose ester with high propionate content and the highest hydroxyl level of the CAP range. Cellulose acetate propionates (CAP) provide the durability of a cellulose acetate and the solubility of a cellulose acetate butyrate. The hydroxyl functionality provides even more solubility as this CAP is soluble in alcohols. They are recommended film formers and resin modifiers for inks, OPVs, plastic and paper coatings. Propionates are effective in dispersing pigments and stable to UV light. They do not react with dyes, fluorescent colors, or metallic pigments.
Product Specifications
ASTM-A viscosity, sec: 0.10 - 0.20
Acetyl by GC, wt%: 1.0 Max
Propionyl by GC, wt%: 40-45
Free acidity, ppm: 400 Max
Moisture, wt%: 3.0 Max
Hydroxyl, wt%: 4.4-5.6
Primary Chemistry: Cellulose Acetate Propionate
Features & Benefits
Low odor
Good flow and leveling
Pigment dispersion medium
Reduced blocking
Chemical resistance
Reduced dry time
Problems Solved
Incompatibility of film forming resins with alcohol
Poor color development of coating and inks due to pigment orientation and resin interference
Printing Inks; Nail Care; Overprint Varnish