RECYCLE PROCESS FOR POLYCONDENSATION RESINS

摘要

A method of recycling fusible polycondensation resin waste (1) in a fusion polymerization apparatus (4) is disclosed. The method of recycling polycondensation resins comprises adding polycondensation resin waste (1) directly to a fusion polymerization apparatus (4) to carry out the polycondensation reaction. The polycondensation resin waste (1) may be supplied from any point of the polycondensation apparatus to carry out the exchange reaction and/or the polycondensation reaction between the resin being prepared in the apparatus and the resin waste (1) supplied. The method may be carried out in a continuous fusion polycondensation system with more than one polymerization reactor connected in series. The polycondensation resin waste (31) may be supplied from the outlet of a polymerization reactor (22) during the initial stage of the polycondensation process (oligomerisation process) to carry out the exchange reaction and/or the polycondensation reaction between the resin waste (31) and the resin being prepared in the later stage of the polycondensation process in a continuous fusion polycondensation apparatus with more than one polymerization reactor (24, 25) connected in series.