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Polyacrylic acid

Carbomers are synthetic high-molecular-weight polymers of acrylic acid that are crosslinked with either allyl sucrose or allyl pentaerythritol
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Primary function
Hydrophilic matrix former
Typical use level
10 - 30%
Physical data

  • Appearance: white, free flowing granules
  • Particle size: 150 - 425 µm
  • Bulk density: 0.37 g/cm³

Benefits / Claims
In the case of soluble drugs, the predominant mechanism is diffusion through the gel layer. With low solubility drugs, the predominant mechanism is polymer relaxation or erosion.
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