Aqueous emulsion and method for making it
AssigneeKemira Oyj
InventorsJaakko Hiltunen, Elisabeth Lackinger-Csarmann, Reetta Strengell
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Abstract
The invention relates to an aqueous emulsion of a hydrophobic anhydride-based sizing agent, prepared by homogenizing the said anhydride-based sizing agent in an aqueous phase which comprises a stabilizer, which is an anionic lignin-carbohydrate complex, where lignin and carbohydrate are covalently bound with each other. The invention further relates to a use of this anionic lignin-carbohydrate complex as a stabilizer as well as to a method for making an aqueous emulsion of a hydrophobic anhydride-based sizing agent.
Claims14
An aqueous emulsion of a hydrophobic anhydride-based sizing agent, prepared by homogenizing the anhydride-based sizing agent in an aqueous phase which comprises a stabilizer, which is an anionic lignin-carbohydrate complex, where lignin and carbohydrate are covalently bound with each other;
- wherein the lignin-carbohydrate complex comprises at least 10 weight-% of carbohydrates, calculated from total dry weight of the complex;
- wherein the aqueous emulsion comprises 0.01-1 weight-% of lignin-carbohydrate complex, calculated from total weight of the aqueous emulsion;
- and
- wherein the aqueous emulsion is free of starch.
Dependencies are inferred from the claim text.