Depolymerization of polyamides

Details Depolymerization of polyamides Depolymerization of polyamides

C - Chemistry, Metallurgy

07

D

C07D 223/10 (2006.01) C07C 51/06 (2006.01) C07C 55/14 (2006.01) C07C 209/62 (2006.01) C07C 211/12 (2006.01) C07D 201/12 (2006.01) C08J 11/24 (2006.01)

Patent

CA 2243126

The invention relates to a process for depolymerising one or more polyamides in the presence of at least an aliphatic alcohol, the depolymerisation taking place with at most 40 mol.% catalyst. This process provides good selectivity towards the monomeric components of polyamides. This process moreover causes as few waste streams as possible.

Cette invention concerne un procédé pour la dépolymérisation d'une polyamide ou de plusieurs polyamides en présence d'au moins un alcool aliphatique. La dépolymérisation a lieu en présence d'au plus 40 %, en mole, de catalyseur. Ce procédé permet d'obtenir une bonne sélectivité des composants monomères des polyamides. De plus, il produit aussi peu que possible de circuits de déchets.

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