CA-398-6 is a low molecular weight cellulose acetate polymer. It is used in the manufacture of membranes and as a film former in lacquers and coatings.
CA-398-6 is a low viscosity solutions grade cellulose acetate polymer. It is commonly used as the main film former in paper, paperboard, and wood coatings. Coatings formulated with CA-398-6 offer superior chemical, heat, and UV resistance and will outperform coatings made from nitrocellulose. CA-398-6 has been approved by the FDA to be used in paper and paper board coatings that will come into contact with food. Additionally, CA-398-6 can be cast into durable films that are useful as tape backing. Films made from CA-398-6 are strong, clear, and chemically resistant making them an ideal polymer for membrane manufacturing. Membranes composed of cellulose acetate like CA-398-6 have excellent resistance to fouling and can be cleaned using chlorine, acids, and bases. This makes cellulose acetate membranes ideal for filtration operations with a high risk of membrane fouling like dairy processing, beverage clarification, waste water treatment, and desalination. In addition, cellulose acetate membranes have a natural ability to separate CO2 from CH4. This is why cellulose acetate is the most commonly used membrane material for spiral wound and hollow fiber membranes for natural gas filtration.
ASTM-A viscosity, sec: 5.0 - 7.0
Acetyl by titration, wt%: 39.8 +/- 0.5
Moisture, wt%: 3.0 (max)
Primary Chemistry: Cellulose Acetate
Chemical resistant
Provides high strength
Good weather-ability
Non-yellowing
Good flow and leveling
Pigment dispersion medium
Provides metallic pigment control
Redissolve resistance
Intercoat adhesion
Damage done to coatings and lacquers by heat, UV, and chemicals
Redissolving of coatings during recoat
Membrane material; Packaging Films; Barrier Coatings; Tape Backing
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