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AssigneesMetsa Fibre Oy, Stora Enso OYJ
InventorsAlistair W. T. King, Christoph Selg, Pirkko Karhunen, Jorma Matikainen, Ilkka Kilpeläinen
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A method of modifying a polymer having hydroxyl groups, selected from the group of polysaccharides and lignin, to give a modified polymer comprising the step of contacting said polymer with at least one organic phosphonate salt in order to chemically modify the polymer, said organic phosphonate salt being in a liquid phase. The method of polymer modification provides novel polymers. Modified polymers obtained from a polymer having been treated with at least one organic phosphonate salt are also disclosed. The modified polymers can be used as such or separated and optionally recovered from the solution, optionally being formed into particular materials or shapes.
A method of modifying a polymer having hydroxyl groups to obtain a modified polymer, comprising the step of contacting said polymer with at least one organic phosphonate salt in order to chemically modify the polymer, said at least one organic phosphonate salt being in the liquid phase, and wherein the at least one organic phosphonate salt is of Formula III
Dependencies are inferred from the claim text.