C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 11/08 (2006.01)
Patent
CA 2722832
Process for recycling a fibre reinforced polymer article, according to which : said article, eventually cut in frag-ments, is dissolved in a solvent capable of dissolving the polymer but not the fibres and which is susceptible of forming an azeotrope with water, forming a solution; the fibres are recovered from said solution; said fibres are washed with solvent by putting them in the form of a slurry in said solvent and by agitating the slurry and/or by making the solvent circulate through it; the washed fibres are recovered from said slurry; and said recovered fibres are submitted to a stripping with steam in order to substantially remove the solvent.
La présente invention concerne un procédé de recyclage d'un article en polymère renforcé par des fibres. Selon ce procédé, ledit article, éventuellement découpé en fragments, est dissous dans un solvant capable de dissoudre le polymère mais pas les fibres et susceptible de former un azéotrope avec l'eau, formant ainsi une solution; les fibres sont récupérées à partir de ladite solution; lesdites fibres sont lavées avec un solvant après mise en suspension dans ledit solvant et agitation de la suspension et/ou circulation du solvant à travers celle-ci; les fibres lavées sont récupérées à partir de ladite suspension; et lesdites fibres récupérées sont soumises à un entraînement à la vapeur afin d'éliminer la quasi-totalité du solvant.
Noel Stephane
Van Weynbergh Jacques
Robic
Solvay (societe Anonyme)
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