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Not all Phthalates are Used as Plasticizers

  • Plasticizers

    • Plasticizers are chemicals that are added to other polymeric substances to improve the flexibility of the polymer or to aid in processing the polymer

    • Once fused, the compound of PVC resin and plasticizer is stable; with heat, extreme stress, or an extracting media would be required to release some of the plasticizer

    • Plasticizers are poor solvents for the polymer

    • Plasticizers are have low volatility

    • Plasticizers will lose the ability to improve flexibility if the plasticizer is chemically attached to the polymer

    • For phthalate esters, the plasticizer range extends from esters prepared from C4 alcohols to C13 alcohols. However because of high volatility, C4 - C6 phthalate esters are no longer used as PVC plasticizers in most countries

  • Solvents

    • Solvents are included in a variety of formulations,

      • help solubilize a necessary ingredient or to

      • aid in spreading or the application of the product

    • Solvents are not designed to be a permanent part of the finished product

    • Evaporation rate of the solvent is designed for the application

    • C1 to C3 (i.e. DEP, DMP, DPP) phthalate esters are solvents, not PVC plasticizers. C4 phthalates (i.e. DBP) find some specialty uses as solvents, but its use is declining 2

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