VCM, which is not water-soluble, requires auxiliary additives for uniform dispersion in water. Emulsion polymerization, the traditional method, uses water-soluble initiators such as peroxides. This process can be conducted continuously or in batches, with batch processes requiring approximately 1% emulsifier and continuous processes needing 2.5 to 3.0%. Emulsifiers like alkyl sulfonates or ammonium salts of fatty acids remain in the PVC after drying, resulting in the formation of E-PVC.

Properties and features

E-PVC consists of very small particles in the range of 1 to 2 µm. The remaining amount of emulsifiers acts as an external lubricant and also gives the E-PVC good antistatic properties in the final products.


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