Leaching contaminants from post-consumer polyester for reuse...

Details Leaching contaminants from post-consumer polyester for reuse... Leaching contaminants from post-consumer polyester for reuse...

C - Chemistry, Metallurgy

08

J

C08J 11/08 (2006.01) B01D 11/02 (2006.01)

Patent

CA 2212182

A novel technique to treat post-consumer polyester for reuse in food-contact applications is described. The process comprises contacting contaminated post- consumer polyester flake with at least one extraction solvent which is soluble in said contaminated flake at a temperature sufficient to allow rapid diffusion of contaminants from said polyester flake; and removing said extraction solvent containing said contaminants from said polyester flake.

On décrit une nouvelle technique pour traiter un polyester de recyclage en vue de son utilisation dans des applications alimentaires. Le procédé consiste à mettre en contact des copeaux contaminés de polyester recyclé avec au moins un solvant d'extraction qui est soluble dans lesdits copeaux contaminés, à une température suffisante pour permettre une diffusion rapide des contaminants hors desdits copeaux de polyester, et à séparer ledit solvant d'extraction contenant lesdits contaminants des copeaux de polyester.

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