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Ammonium Polymethacrylate Ceramic Deflocculant (Darvan Type)

Ammonium polymethacrylate (APMA) is a premium polymeric dispersant functionally equivalent to Vanderbilt Darvan C and Darvan 7-N, widely used in studio and industrial ceramics for deflocculating casting slips. APMA provides excellent electrosteric stabilization of clay, alumina, and mixed ceramic systems at very low dosages (0.1–0.3% on solids), producing fluid slips with high solids content and excellent casting behavior.

Technical Specifications

appearanceColorless to light amber aqueous solution
purity (%)≥97
pH (as-supplied)7.5–9.5
solid content (%)25–35
molecular weight (g/mol)8000–20000

Applications

  • Deflocculant for porcelain and stoneware casting slips
  • Dispersant for studio ceramics slip casting applications
  • Co-dispersant with sodium silicate in traditional ceramics
  • Dispersant for sanitaryware and tableware casting operations
  • Dispersant in alumina and technical oxide ceramic slips

Key Features

  • Functionally equivalent to Darvan C with reliable deflocculation performance
  • Very low required dosage minimizes organic content in green bodies
  • Ammonium counter-ion decomposes cleanly during binder burnout
  • Compatible with all major clay minerals and oxide ceramic systems

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Ammonium Polymethacrylate Ceramic Deflocculant (Darvan Type)

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