C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 11/08 (2006.01) C08L 23/00 (2006.01)
Patent
CA 2376488
The invention relates to a method of separating polyolefinic synthetic mixtures, based on a polyolefinic synthetic fraction or a synthetic mixture as the starting material. According to the inventive method, said starting material is contacted with a solvent and the temperature of the solvent/synthetic mixture is adjusted in such a manner that a solution with at least one dissolved polymer type is formed. The dissolved polymer type is sheared and precipitated from the solution in order to separate the polymer type from the other components of the solution. The invention is especially useful for processing mixed synthetics and synthetic scraps.
L'invention concerne un procédé de séparation de matières plastiques mélangées, selon lequel le produit de départ est une fraction plastique polyoléfinique ou un mélange plastique. Ce produit de départ est mis en contact avec un solvant, et la température du mélange plastique-solvant est réglée de manière à former une solution comportant au moins un type de polymère dissous. On fait précipiter ce type de polymère dissous par cisaillement dans la solution, afin de le séparer des autres produits de la solution. Ladite invention convient en particulier au traitement de plastiques mélangés et de déchets plastiques.
Der Grune Punkt-Duales System Deutschland Ag
Robic
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