FIELD: metallurgy.
SUBSTANCE: procedure consists in discharge of polymer melt from reactor of final poly-condensation. This discharge is performed continuously thus forming unloaded flow of polymer melt. Said flow is hardened forming particles by means of an underwater granulator. Before hardening a part of unloaded flow of melt is supplied into an adjacent jet. There is formed polymer melt of adjacent jet. Additive is supplied to the said melt of adjacent jet forming adjacent jet containing additive. Adjacent jet containing additive is supplied to a place upstream from the place of initial adjacent jet forming at the stage of solidification. Additive is chosen from anti-oxidants, substances absorbing ultra-violet light, deactivators of catalyst metal, dyes reducing amount of acetaldehyde or oxidised compounds raising rate of repeated overheat of additive, additives reducing adhesiveness of bottles facilitating oxygen proofness of materials, and combinations of said substances.
EFFECT: improved process for production of poly-ether particles at low CC (characteristic of conditioning) eliminating solid phase polymerisation for additional increase of molecular weight.
39 cl, 2 dwg
