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US 2018/0298557 A1Published application
Methods for treating paperboards and paper media, and associated treated paperboards and paper media
AssigneeBASF SE
InventorDaniel Niedzwiecki
Life of this patent
Estimating the term…
Abstract
Methods for treating paperboard or paper media are provided. In these methods, a composition is applied to the surface of the paperboard or paper media. Paperboards or paper media treated in accordance with any of the methods achieved increased strength under both dry and wet testing methodologies as compared with untreated paperboards and paper media of the same basis weight.
Claims20
A method for treating paperboard or paper media comprising the steps of:
- providing a first composition which comprises at least one component selected from a multifunctional alcohol, an amine, an amine derivative, a tin-based catalyst, and combinations thereof;
- providing a second composition comprising an isocyanate component;
- applying one of the first composition and the second composition onto a surface of the paperboard or paper media;
- applying the other of the first composition and the second composition onto the surface of the paperboard or paper media to form a treatment composition,
- wherein the isocyanate component is selected from the group of methylene diphenyl diisocyanate, polymethylene polyphenyl isocyanate, an isocyanate-terminated prepolymer, a carbodiimide polymer having unreacted isocyanate groups, and combinations thereof.
2 more elements
A method for treating paperboard or paper media comprising the steps of:
- providing the paperboard or paper media;
- providing a capped polycarbodiimide that comprises the reaction product of a carbodiimide polymer having unreacted isocyanate groups and a reactive group selected from the group of a mono functional isocyanate, a monofunctional alcohol, a monofunctional amine and combinations thereof;
- and
- applying the capped polycarbodiimide as a coating onto a surface of the paperboard or paper media.
1 more element
A treated paperboard or paper media made by the process of:
- providing a first composition which comprises at least one component selected from a multifunctional alcohol, an amine, an amine derivative, a tin-based catalyst, and combinations thereof;
- providing a second composition comprising an isocyanate component;
- applying one of the first composition and the second composition onto a surface of the paperboard or paper media;
- applying the other of the first composition and the second composition onto the surface of the paperboard or paper media to form a treatment composition,
- wherein the isocyanate component is selected from the group of methylene diphenyl diisocyanate, polymethylene polyphenylisocyanate, an isocyanate-terminated prepolymer, a carbodiimide polymer having unreacted isocyanate groups, and combinations thereof.
2 more elements
Dependencies are inferred from the claim text.