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US 2016/0237194 A1Published application
A method for increasing the reactivity of lignin
AssigneeUpm-Kymmene Corporation
InventorsSuvi PIETARINEN, Sanna VALKONEN, Okko RINGENA
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Abstract
The present invention relates to a method for increasing the reactivity of lignin, wherein the method comprises the following steps: a) forming, under heating at a temperature of 71-94° C., an aqueous dispersion comprising alkali and lignin, wherein the alkali comprises a hydroxide of an alkali metal; and b) heating the dispersion formed in step a) at a temperature of 50-95° C. for producing alkalated lignin.
Claims21
A method for increasing the reactivity of lignin, characterized in that the method comprises the following steps:
- a) forming, under heating at a temperature of 71-94° C., an aqueous dispersion comprising alkali and lignin, wherein the alkali comprises a hydroxide of an alkali metal;
- and
- b) heating the dispersion formed in step a) at a temperature of 50-95° C. for producing alkalated lignin
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Dependencies are inferred from the claim text.