Properties of polymerizing monomers

The monomer assumes several functions in the polymerizing medium. They are proportionately manifested in all the physical and chemical parameters of the polymerizing mixture. The monomers for macromolecular synthesis must be pure. The requirements concerning the permissible amount of impurities are ever more stringent this trend is uncompromising and unequivocal. 

Not long ago, ethylene and propene polymerization on ZN catalysts required monomers with a maximum of 10 ppm of H20. This standard was found unsatisfactory. Modern facilities operate with water concentrations of units of ppm or less. Ionic processes are not less sensitive to H20. 

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