DEVICE AND METHOD FOR PRODUCTION OF PARTIALLY CRYSTALLISED POLYMER Russian patent published in 2015 - IPC C08G63/88 B01J19/20 

FIELD: process engineering.

SUBSTANCE: proposed method comprises preparing crystallisable polymer melt. This process includes the steps that follow. Processed, mainly, amorphous initial polymer pellets are introduced in crystallisation reactor (1) to be partially crystallised at heating without smelting. Then, produced partially crystallised polymer is discharged from said reactor (1). Note here that at least a portion of said polymer is discharged and fed to said reactor (1) for reverse mixing for reduction in susceptibility of sticking. This process differs from know processes in that discharged, partially crystallised polymer is combined and mixed with initial polymer before reverse mixing in reactor (1). Then, said mix is fed in said reactor (1). Note here that said reactor (1) is communicated with transfer section including carrier (3) and inclined slope (5) for discharge of at least a portion of partially crystallised polymer for reverse mixing in said reactor (1). Invention covers also the device for process implementation.

EFFECT: efficient mixing of pellets without sticking.

19 cl, 10 dwg