PROCESSO DE PURIFICACAO PARA MONOMEROS E SOLVENTES USADOS NA PRODUCAO DE POLIMEROS POR POLIMERIZACAO EM SOLUCAO

摘要

A purification process for monomers and solvents used in the production of polymers by solution polymerization comprises supplying impure monomer and solvent to a distillation column which rejects light and heavy impurities from the top and bottom respectively and which dries the monomer-solvent mixture by azeotropic distillation, and withdrawing a pure monomer solvent vapor as a side stream from a point intermediate the top and bottom of the column.