Extraction of impurities from grafted polyolefins

Details Extraction of impurities from grafted polyolefins Extraction of impurities from grafted polyolefins

C - Chemistry, Metallurgy

08

F

C08F 6/00 (2006.01) C08L 51/06 (2006.01)

Patent

CA 2563373

A process for purifying grafted polyolefins by extraction is disclosed. The purified grafted polyolefins have improved color and adhesion properties. The extraction is performed with an azeotropic solvent that is strong enough to extract impurities but does not cause sticking of the grafted polyolefin. The azeotropic solvent can be easily recycled

Cette invention concerne un procédé de purification de polyoléfines greffées par extraction. Les polyoléfines greffées purifiées possèdent des propriétés améliorées en terne de couleur et de pouvoir adhésif. L'extraction se fait au moyen d'un solvant azéotropique qui est suffisamment puissant pour extraire des impuretés, mais sans provoquer un gommage de la polyoléfine greffé,. Le solvant azéotropique peut être facilement recyclé.

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