Patent ID: 9267007
Filing Date: 2016-02-23
CPC Classification: B29B,C08J

Claim Text:
1. A method for adding an additive into a polyester polymer melt comprising: (a1) polycondensing, in a reactor, a polyesterified reaction mixture to form a polyester polymer melt, (a) discharging the polyester polymer melt from the reactor to form a discharged polyester polymer melt stream, and (b) solidifying the discharged polyester polymer melt stream to form polyester particles, and (c) prior to solidification, feeding a portion of the discharged polyester polymer melt stream to a slipstream to form a slipstream polyester polymer melt, and (d) feeding an additive into said slipstream polyester polymer melt to form an additive containing polyester slipstream melt, and (e) feeding the additive containing polyester slipstream melt to the reactor, wherein from 50% to 98% of the discharged polyester polymer melt stream is solidified without return to the reactor.