Molecular weight control in peroxide-initiated aqueous polymerisations.

摘要

There is disclosed the use of copper and cobalt ions to control molecular weight in the aqueous polymerisation of water-soluble polymerisable monomers. Incorporating catalytic amounts, generally from 1 to about 300 ppm of copper or cobalt ions, in aqueous polymerisation reactions initiated with peroxides, preferably with at least partial neutralization of the monomers, provides for molecular weight control of the resulting polymers.