Gastric/Enteric-Soluble Pharmaceutical Film Coating
METHACRYLIC ACID-ETHYLACRYLATE COPOLYMER
This product is an anionic copolymer based on methacrylic acid units. It is insoluble in gastric fluid but forms salts and becomes soluble in weakly alkaline solutions, thereby providing an enteric coating that dissolves in intestinal fluid at pH 5.5 and above.


Product Characteristics

Appearance
White powder solid
Odor
Faint, characteristic odor
Acid value
300–330
Viscosity
100–200 mPa·s (20°C)
Shelf life
24 months


Film-forming properties

With the addition of a plasticizer, it forms a colorless, transparent film. The film is insoluble in media with a pH below 5.0 (such as gastric fluid) but dissolves in buffer solutions with a pH above 5.5.


Product Applications
  • Used for enteric film coating of pellets, tablets, and granules; suitable for colorless, transparent, or colored enteric- coated dosage forms (e.g., Omeprazole, Rabeprazole, Pantoprazole, Diclofenac Sodium, etc.)
  • Increasing the coating weight can delay drug release in the intestine
  • Used for coating capsules and granules
  • Provides excellent enteric performance

  • Packaging

    Fiber drum with double- layer polyethylene inner bags; 10kg or 20kg per drum


    Storage
    Keep tightly sealed; store at room temperature

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