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1. (WO2017148866) PROCESS FOR CLEANING RECYCLABLE PLASTIC MATERIAL

Pub. No.:    WO/2017/148866    International Application No.:    PCT/EP2017/054517
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Feb 28 00:59:59 CET 2017
IPC: B29B 17/00
Applicants: TUSTI B.V.
Inventors: KOLIJN, Jan
Title: PROCESS FOR CLEANING RECYCLABLE PLASTIC MATERIAL
Abstract:
Process for cleaning recyclable plastic material comprising the following steps: ∙ (a) providing a contaminated recyclable non-styrene based plastic material; ∙ (b) contacting the contaminated recyclable plastic material at a temperature in the range of from 5-35 °C with a liquid mixture which comprises a water phase and a separate solvent phase to remove contaminants from the contaminated recyclable plastic material, whereby the solvent phase comprises a fatty acid ester and is present in the form of droplets which are at least partly distributed in the water phase, and wherein the water phase is present in an amount of more than 50 wt. %, based on total weight of the liquid mixture; ∙ (c) separating at least part of recyclable plastic material as obtained in step (b) from the liquid mixture as obtained in step (b) which contains contaminants removed from the contaminated recyclable plastic material; ∙ (d) allowing at least part of the liquid mixture as obtained in step (c) to phase-separate into a water phase and a solvent phase which contains contaminants removed from the contaminated recyclable plastic material; and ∙ (e) recycling at least part of the water phase as obtained in step (d) to step (b). Use of an aqueous emulsion of fatty acid ester containing more than 50 wt.% of water to remove contaminants from a recyclable non-styrene based plastic material.