Process for the disposal of the residue of monomer in the polymers of acrylonitrile

摘要

In order to remove monomer residues from an acrylonitrile polymer which has been produced in the form of particles, for the purpose of reducing the residual monomer content to virtually negligible values, the particles are subjected to a removal process which includes raising the temperature of the particles to a value between the glass transition temperature and the melting point of the polymer.