Process for removing unwanted material from wanted material

Details Process for removing unwanted material from wanted material Process for removing unwanted material from wanted material

C - Chemistry, Metallurgy

02

F

C02F 1/68 (2006.01) C02F 1/40 (2006.01)

Patent

CA 2221360

Process for removing unwanted material from wanted material containing water by bringing an isocyanate-containing prepolymer into contact with the materials, allowing the prepolymer to react with the water to form a flexible foam and removing the foam obtained from the wanted material.

Procédé permettant d'enlever une matière indésirable d'une matière donnée contenant de l'eau, qui consiste à mettre un prépolymère contenant de l'isocyanate en contact avec lesdites matières, à laisser le prépolymère réagir avec l'eau pour former une mousse souple et à enlever la mousse ainsi obtenue de la matière voulue.

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