OLIGOMER PELLETS OF ETHYLENE TEREPHTHALATE

摘要

A process is disclosed for producing free-flowing pellets of ethylene terephthalate oligomer. In the process a molten ethylene terephthalate oligomer having an intrinsic viscosity of from about 0.08 to 0.15 is forced through a plurality of orifices of an orifice plate under pressure into an inert gas zone to form jets of the oligomer which dissociate into spherical droplets under the influence of surface tension. The droplets are allowed to fall through the inert gas zone into a body of water about 20 to 40 inches from the orifice plate to solidify the droplets into pellets. The pellets are then removed from the water.