Composition comprising lignin and epoxy compound for coating and method for the manufacturing thereof and use thereof
AssigneeStora Enso OYJ
InventorsAshar Zafar, Dimitri Areskogh
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Abstract
The present invention relates to a composition for coating, in particular a composition comprising lignin and one or more epoxy-group containing compounds, and methods for the manufacturing thereof and uses thereof. The present invention also relates to products obtainable by said methods and uses thereof.
Claims7
A composition for coating, comprising unmodified lignin or modified lignin or both, a triethylenetriamine (TETA) catalyst, one or more epoxy-group containing compounds selected from the group consisting of epichlorohydrin (ECH), and poly(ethylene glycol) diglycidyl ether (PEGDGE), and combinations thereof, and a solvent selected from the group consisting of DMSO, MeOH, MeOH and water and combinations thereof, wherein the unmodified lignin is lignin that has not been modified through alkoxylation, ozonolysis, phenolation, or hydroxymethylation, and wherein the modified lignin is lignin that has been modified through alkoxylation, ozonolysis, or hydroxymethylation.
A method for manufacturing a composition for coating, comprising the following steps:
- i) providing an unmodified lignin or a modified lignin, wherein the unmodified lignin is lignin that has not been modified through alkoxylation, ozonolysis, phenolation, or hydroxymethylation, and wherein the modified lignin is an oxide-modified lignin, a hydroxymethylated modified lignin, or an ozonized-modified lignin,
- ii) adding a solvent selected from the group consisting of DMSO, MeOH, MeOH and water, and combinations thereof,
- iii) adding an epoxy-group containing compound selected from the group consisting of epichlorohydrin (ECH), and poly(ethylene glycol) diglycidyl ether (PEGDGE), and combinations thereof,
- iv) mixing and heating to form a heated mixture,
- v) adding a triethylenetriamine (TETA) catalyst thereof to the heated mixture, and
- vi) mixing the heated mixture and catalyst, thus providing a composition.
Dependencies are inferred from the claim text.