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Copovidone – Premium Binder Excipient Optimized for Direct Compression

1. General introduction of Copovidone

Copovidone (Vinylpyrrolidone-vinyl acetate copolymer) is a linear, amorphous copolymer synthesized from N-vinylpyrrolidone (NVP) and vinyl acetate (VA) monomers in a precise 6:4 mass ratio. This engineered structure perfectly balances the superior hydrophilic binding capabilities of PVP (Polyvinylpyrrolidone) with the moisture-resistant, flexible properties of vinyl acetate. It is specifically designed to address critical formulation challenges in modern solid dosage forms, including tablet mechanical integrity and API bioavailability enhancement.

KoVidone VA64 is a premium commercial grade of copovidone, specifically engineered to meet stringent pharmaceutical standards and deliver consistent performance across advanced formulations.

2. Active composition of Copovidone 

Typical technical specifications:

  • Chemical name:Polyvinylpyrrolidone-vinyl acetate copolymer
  • Molecular formula:(C6H9NO)n(C4H6O2)m
  • Appearance: is a white to yellowish-white amorphous powder.
  • Solubility: freely soluble in water, ethanol (95%)

3. Key advantages of Copovidone

  • Exceptional Binding Efficiency in Direct Compression: Due to its highly plastic deformation behavior, Copovidone creates robust intergranular bonds. This allows formulators to reduce excipient levels while achieving superior tablet hardness and eliminating capping or lamination issues.
  • Ideal Matrix for Hot-Melt Extrusion (HME): With an optimal glass transition temperature and high thermal stability, Copovidone is the gold standard carrier for solid dispersions, stabilizing poorly soluble APIs in an amorphous state to prevent recrystallization.
  • Lower Hygroscopicity and Enhanced Stability: The presence of hydrophobic vinyl acetate groups significantly decreases moisture sensitivity, protecting hydrolytically unstable APIs and extending product shelf-life.

4. Applications of Copovidone

In Pharmaceuticals:

  • Dry and Wet Binder: Suitable for direct compression formulations of conventional tablets and orally disintegrating tablets (ODTs). In addition, copovidone is widely used in both wet granulation and dry granulation processes for manufacturing high drug-load tablets.
  • Bioavailability Enhancement Carrier: Functions as the primary polymeric matrix in HME and Spray Drying technologies to improve the dissolution profiles of BCS Class II and IV drug 
  • Film-forming agent: provides good adhesion, elasticity, and hardness, and can be used as a moisture barrier.

In Premium Cosmetics:

  • Film Former and Fixative: Employed in high-end hair styling products (sprays, gels) and waterproof mascaras, offering transparent, flexible films with excellent humidity resistance and zero stickiness.

5. Sample Copovidone Products 

6. Product contact information 

For more information about Copovidone sourcing, please contact us:

 

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