IMPROVEMENTS IN A METHOD OF RECLAIMING STYRENE AND OTHER PRODUCTS FROM POLYSTYRENE BASED MATERIALS

摘要

A method of reclaiming styrene from polystyrene-containing materials wherein a solution of polystyrene from such materials in a solvent is heated in distillation equipment to depolymerize the polystyrene and produce a styrene fraction and a heavier fraction, the styrene fraction being separated from the heavier fraction. Prior to heating, an inert gas is used to purge the distillation equipment of oxygen. The method preferably is carried out at the lowest temperature which will achieve the desired rate of depolymerization.