Verfahren zur Abtrennung von Polymeren aus Polymermischungen

摘要

A method of separating at least two immiscible thermoplastic polymer components from a liquid mixture thereof, wherein a first of the at least two immiscible thermoplastic polymer components has a first melt viscosity and a second of the at least two immiscible thermoplastic polymer components has a second melt viscosity, wherein the second melt viscosity is higher than the first melt viscosity, wherein the method involves flowing the liquid mixture through a shear zone, wherein the liquid mixture is subjected to shear in the shear zone at a shear rate and a shear temperature sufficient to separate the at least two immiscible thermoplastic polymer components into substantially discrete and continuous phases, wherein a first of the phases substantially contains the thermoplastic polymer component having the first melt viscosity and a second of the phases substantially contains the thermoplastic polymer component having the second melt viscosity. Also provided are methods of recycling a liquid polymer mixture using the separation method.