C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 11/04 (2006.01) C08J 11/08 (2006.01)
Patent
CA 2426803
The invention relates to a method for recovering nylon from a nylon-containing material by contacting the nylon-containing material with an alkanol- containing solvent at elevated temperature and at a pressure higher than the equilibrium pressure of the alkanol-containing solvent at the elevated temperature, thereby dissolving the nylon in the alkanol-containing solvent, removing the alkanol-containing solvent containing dissolved nylon from any undissolved solids, and decreasing the temperature of the alkanol-containing solvent containing dissolved nylon to precipitate the dissolved nylon.
L'invention concerne un procédé permettant de récupérer du nylon à partir de matériau renfermant du nylon. Ce procédé consiste à mettre en contact le matériau renfermant du nylon avec un solvant renfermant un alcanol à une température élevée et à une pression supérieure à la pression d'équilibre dudit solvant à une température élevée, cette mise en contact dissolvant le nylon dans le solvant renfermant un alcanol, à éliminer ledit solvant renfermant du nylon dissous à partir de solides non dissous et à diminuer la température du solvant renfermant un alcanol comprenant du nylon dissous, de manière à précipiter le nylon dissous.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Interface Inc.
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