Verfahren zur Rückgewinnung von Elastan, Polyamid und Wolle aus Geweben

Details

Veröffentlichungs-Nr.

EP4803566

Anmeldetag

13. Januar 2026

Veröffentlichung

9. September 2026

Rechtsraum

EP

IPC

C08J11/08, B29B17/02, D01F6/70

Abstract

The present invention relates to a method for the recovery of Elastane, polyamide and wool fibers from fabrics.In particular, the present invention concerns a method for recovering the fibers forming a complex product, in particular an item of clothing or a fabric, containing Elastane, polyamide and wool fibers, comprising the following steps:a) optionally, pretreating a textile product or material to form a textile material in pieces;b) extracting the polyamide from the textile product or material, optionally treated according to step a), by means of a solvent mixture of water, alcohols and alkali or alkali-earth metal salts to obtain a solution and a solid residue;c) extracting the Elastane from the solid residue of step b) by means of a protic or aprotic dipolar solvent to obtain a solution and a wool-based solid residue;d) possibly washing the wool-based solid residue and drying said solid residue and, optionally, said wool-based solid residue to obtain fibers or flake;e) recovering the polyamide from the solution of step b);f1) recovering the Elastane from the solution of step c) by precipitation with addition of a nonsolvent, orf2) concentrating the Elastane solution of step c) by partial evaporation of the solvent and using the resulting concentrated solution for the production of yarns, coatings or membranes.

Anmelder

Firmen

Marzotto Wool Manufacturing S.r.l.
Re-Sport S.r.l

Land

🇮🇹 Italien

Fachgebiete