Control of Hardness (Cont’d)

• Lower hardness may be achieved by:

  • Plasticizing
    • Benzoflex 9-88 SG (Velsicol Chemical Co.)
    • Kodaflex DMEP (Tennessee Eastman)
  • Using another glycol as the curative
    • Ethylene Glycol
    • Diethylene glycol
    • 1,5-pentanediol
  • Blending of curatives

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