Process for purifying a polymer solution by adsorption onto treated bleaching earth

TW202641690APending Publication Date: 2026-10-16IFP ENERGIES NOUVELLES
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Patent Information

Application Number
TW114149096
Authority / Receiving Office
TW · TW
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-12-17
Filing Date
2025-12-15
Publication Date
2026-10-16

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Abstract

the washed bleaching earth being obtained at the end of a washing process which comprises placing bleaching earth in contact with an acidic solution. The present invention also relates to a more overall process for recycling thermoplastics of a plastic feedstock, comprising: a) a step of dissolving the plastic feedstock in a dissolution solvent, to obtain a crude polymer solution; b) a step of purifying the crude polymer solution, comprising an adsorption sub-step b1) involving the adsorption purification process, to obtain a purified polymer solution; and c) a solvent-polymer separation step.
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